Post by: ATJr. on Oct 14, 2013 at 09:24 PM
Encyclopedia, "The Book of Knowledge"...
There i came to read an article about how to become a radio amateur.
In that article i saw how the 6SN7 tube was used in a super regenerative receiver
operating at 80 and 40 meter amateur radio band.
And then in high school in my junior year, i saw some big
big transmitter tubes, the 813 was one of them..
My first tube power amp was a 6EM5 push-pull made from
parts borrowed from a high school chum...that was around 1968...
it was a mono amp used to drive a Jensen 8 incher...i used a ceramic
pickup turntable, my favorite then was Herb Alpert and the Tijuana Brass,
and the Ventures....the 6EM5 was a TV vertial scanning output tube,
borrowed from out Admiral 21 inch BnW tv set, it was a
beam power tube unlike the 6BQ5 which was a pentode, more like a 6973....
Fast forward to around 2000....
while i still had some loose tubes from tv sets stashed,
i really started collecting tubes when i went to work in Russia around 2004....
having met Gerry Sta. Maria here in PDVD, he gave me a lot of tubes to look at,
and since the internet had all datasheets, i was able to look at tube specs and
see what the tubes can do...then there was this all year round sale of
U1$ tubes out of Rogalski's in Miami....this is how i came to accumulate
over a thousand tubes...i also ordered tubes out of Moscow, Russia....
my tube stash can be seen here: https://www.facebook.com/tony.tecson/media_set?set=a.625867857434852.1073741842.100000349293477&type=1
those who are familiar with tubes will quickly note that my tube stash are
mostly TV tubes and some transmitting types, like the 813, 4D32, 7405, 6146, 1624
and the likes...99% of my power tubes are TV horizontal output tubes....
i have a lot of plans to use those tubes i consider as "sleeper" tubes...
scoffed at by the golden ear club as mere TV tubes, but they hold a lot of promise
when put to good use.....
Post by: remington on Oct 14, 2013 at 09:32 PM
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN6341_zps6b9954f6.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN6341_zps6b9954f6.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN6337_zps184d2a38.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN6337_zps184d2a38.jpg.html)
more power master and more tube projects to come! ;D
Post by: luis on Oct 22, 2013 at 11:45 AM
in my case, i have a tube 45 ultra/22 linear wpc for 5 years na. it's my reference for comparison. it has never crossed my mind to sell it.
more power sir.
Luis :)
Post by: bb3 on Oct 22, 2013 at 11:53 PM
There are but just a handful of guys like you who have the passion, art, and knowledge to design amps based on the tubes available.
Yes, properly designed, those TV tubes sound sweet!
Malapit na ako magpagawa. Konting ipon pa. Low budget pa ako ngayon :).
Post by: edrel sison on Oct 23, 2013 at 08:07 PM
Nice story Tony.go go go bb3! i am sure you will not regret it!
There are but just a handful of guys like you who have the passion, art, and knowledge to design amps based on the tubes available.
Yes, properly designed, those TV tubes sound sweet!
Malapit na ako magpagawa. Konting ipon pa. Low budget pa ako ngayon :).
Post by: bb3 on Oct 23, 2013 at 10:38 PM
go go go bb3! i am sure you will not regret it!
I'm sure I won't.
I've been a fan of Tony for a long time now.
But still deciding what kind of configuration since this will be a keeper.
Malambing talaga ang SET pero I'm still basically a push-pull type especially with the speakers I have in mind and the recordings I listen to most often.
Sana pag ready na ako, nandyan pa yung mga 'bakal' na pinagusapan natin. ;)
Right now still busy with the HiFi Show.
Sorry for the OT.
Post by: edrel sison on Oct 24, 2013 at 11:24 AM
Post by: Gino on Oct 26, 2013 at 12:57 PM
Post by: ATJr. on Oct 26, 2013 at 05:37 PM
wow sir, positively passionate. para kasing iba ang dating ng tubes, nostalgic, artful and pag-tumunog ang lambing.
in my case, i have a tube 45 ultra/22 linear wpc for 5 years na. it's my reference for comparison. it has never crossed my mind to sell it.
more power sir.
Luis :)
much as i would like to stay away from the usual "audio" tubes,
jopet sold me a quad of Shuguang EL34 taken off a Cayin amp,
that changed my impression of so called "chinese" tubes,
they are not so bad as some people paint them to be.....
reinforced my belief that it is not the tubes,
but what you do with it that matters....:D
and then someone traded two quads of KT88's for my 6H8C aikido,
so now i have to make power amps out of them too.... 8)
Post by: ATJr. on Oct 26, 2013 at 05:48 PM
Nice story Tony.
There are but just a handful of guys like you who have the passion, art, and knowledge to design amps based on the tubes available.
Yes, properly designed, those TV tubes sound sweet!
Malapit na ako magpagawa. Konting ipon pa. Low budget pa ako ngayon :).
my real passion is TV tubes, i made my first tube amp in the late 60's
using the 6EM5, a beam power tube used as vertical scan output tube...
a friend in high school loaned out a power transformer and i bought a Lion output traffo...
it was a mono amp driving a Jensen 8 inch full ranger on a speaker baffle
used as a stand for our Admiral 21 inch black and white tv circa 1962...
now i have over a thousand TV tubes to play around with,
these are 1$ tubes so amplifier maintenance is cheap and easy....
after 3 years, i found out that folks are more interested in the usual so-called
audio tubes....the 12Axx series, the 6L6, 6V6, etc....
these folks buy amplifiers on the basis of tube rolling....
this is in conflict with my design philosophy.... 8)
i want to be able to design amplifiers that sound good and does not need
tube rolling to bring out good sounds....if my amps changes its sound
each time a tube is plugged in, i feel depressed.... ;)
also low cost of maintenance is important.... 8)
Post by: ATJr. on Oct 26, 2013 at 05:49 PM
Ano ang ibig sabihin ng "malambing" tumunog?
yung ang feeling mo gusto kang hagkan at yakapin nung singer (ladies only please....:D)
Post by: deist on Oct 26, 2013 at 05:56 PM
Post by: ATJr. on Oct 26, 2013 at 06:00 PM
irons reserved for your very own version of tube journey sir boy :o)
imho, irons in any tube amp can not be overemphasized....
it is the single most expensive part in any amp.....
in my amps, i like them big, as big as practically big can be.... 8)
i saw a current commercial amp with KT88 output tube,
but using an output core the type of which we see
on 6BQ5 type amplifiers....while under normal listening
in a home environment, you probably won't miss the lows,
still i believe that the output traffo that size does not
do justice to what the KT88 is capable of...
amplifiers rated 50 watts at 1khz, does not mean 50 watts at
20hz, nor at 20khz....core saturation is the deal breaker at 20hz,
while leakage inductance and shunt capacitance is the deal breaker at 20khz..
it may interest you to know that SS amps with it low damping factor
does not suffer from this limitations...
Edrel is already there.....in a class on his own...
a reliable friend, we exchange notes every now and then,
he also lets me use his bobbins and irons in my OPT builds...
Post by: ATJr. on Oct 26, 2013 at 06:05 PM
I always admire people who are passionate about their craft. Thanks for sharing with us your story, i personally haven't heard your creations (that is because i'm new to this hobby ;D) BUT i'm hoping to hear any of them soon!
my other passion is teaching young people about tubes...
reason being, i want the tube technology passed on to
next generation DIY'ers....
there are still millions of tubes out there, waiting to be picked...
aside from moderating at diyaudio.com,
i have several threads and this is one of them...
"Tube amplifier learning while building, all you want to know"
http://www.elab.ph/forum/index.php?topic=34991.0
Post by: deist on Oct 27, 2013 at 12:00 AM
Post by: ATJr. on Nov 10, 2013 at 05:30 PM
(http://i5.photobucket.com/albums/y155/leoman53/Russian%20Aikido/IMG_3973_zps04d01f0d.jpg) (http://s5.photobucket.com/user/leoman53/media/Russian%20Aikido/IMG_3973_zps04d01f0d.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/Russian%20Aikido/IMG_3972_zps16fe9a61.jpg) (http://s5.photobucket.com/user/leoman53/media/Russian%20Aikido/IMG_3972_zps16fe9a61.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/Russian%20Aikido/IMG_3971_zpsa27bc58c.jpg) (http://s5.photobucket.com/user/leoman53/media/Russian%20Aikido/IMG_3971_zpsa27bc58c.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/Russian%20Aikido/IMG_3967_zps3031905a.jpg) (http://s5.photobucket.com/user/leoman53/media/Russian%20Aikido/IMG_3967_zps3031905a.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/Russian%20Aikido/IMG_3968_zps17792de4.jpg) (http://s5.photobucket.com/user/leoman53/media/Russian%20Aikido/IMG_3968_zps17792de4.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/Russian%20Aikido/IMG_3970_zps86ea43d1.jpg) (http://s5.photobucket.com/user/leoman53/media/Russian%20Aikido/IMG_3970_zps86ea43d1.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/Russian%20Aikido/IMG_3978_zps7bb68525.jpg) (http://s5.photobucket.com/user/leoman53/media/Russian%20Aikido/IMG_3978_zps7bb68525.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/Russian%20Aikido/IMG_3974_zps9a59b969.jpg) (http://s5.photobucket.com/user/leoman53/media/Russian%20Aikido/IMG_3974_zps9a59b969.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/Russian%20Aikido/IMG_3975_zps24f41642.jpg) (http://s5.photobucket.com/user/leoman53/media/Russian%20Aikido/IMG_3975_zps24f41642.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/Russian%20Aikido/IMG_3976_zpsea673f50.jpg) (http://s5.photobucket.com/user/leoman53/media/Russian%20Aikido/IMG_3976_zpsea673f50.jpg.html)
Post by: meat_eater on Nov 12, 2013 at 04:25 AM
my other passion is teaching young people about tubes...
reason being, i want the tube technology passed on to
next generation DIY'ers....
there are still millions of tubes out there, waiting to be picked...
aside from moderating at diyaudio.com,
i have several threads and this is one of them...
"Tube amplifier learning while building, all you want to know"
http://www.elab.ph/forum/index.php?topic=34991.0
This is true, my cousin and I certainly had our fair share of lectures from Tony whenever we would drop by his house :)
Post by: ATJr. on Nov 12, 2013 at 06:29 AM
I have heard some of Tony's creations and would say that those indeed were good sounding amps.
This is true, my cousin and I certainly had our fair share of lectures from Tony whenever we would drop by his house :)
for me it is not a business, there is no money to be made selling amps
unless on a scale of mass production where unit cost is low so there is a margin to be had,
there are not many technicians who can do repairs on tube gears
so i am encouraging my technician friends to start on tubes....
by end of November, i am scheduled to hold a lecture/seminar about transformers and amps and tubes
to young techies, hopefully starting them on tubes....these are mostly digital techies...
the lecture venue can sit 24 but to date 60 have signified intentions to join....
we'll see how it turns out.....
my dream is to have DIY'er only meet ups at least once a year similar to ETF or european triode festival
where DIY'ers can display their creations and talk about them in form of lectures...
Post by: ATJr. on Nov 18, 2013 at 06:55 AM
a 5Y4ST rectifier tube used in the psu....
broskie ccda running the 6sn7 at 150v 3mA plate operating point..
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4010_zpsaa00ab70.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4010_zpsaa00ab70.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4012_zps35cb3373.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4012_zps35cb3373.jpg.html)
Post by: remington on Nov 18, 2013 at 10:23 AM
Post by: Chorus on Nov 18, 2013 at 10:27 AM
This pre amp really sounds good :o Have tried to pair this with three types of amp, A tube push pull a class A Musical Fidelity and a lepai and I may say it can really bring out the goodness if not the best of those amps. The sound is crisp and clear in the highs and rich and full in the lows (mataba ang tunog), voices are clear and very detailed ang SQ,deep and wide din ang sound stage hindi namimili ng genre ng sound :o A very nice creation once again master. More power and keep them coming ;D
tumambay ka nanaman kila Brader Tony kahapon hahaha
Post by: remington on Nov 18, 2013 at 10:35 AM
Post by: Chorus on Nov 18, 2013 at 10:48 AM
oo nga napasarap ng sountrip at kwentuhan he he! Ganda nitong pre amp na bagong creation ni master pasyal ka dito sa bahay minsan para marinig mo. Proto type palang di pa finish pero ganda na ng SQ.
oo ba may ipapaampon pala ako sayo na power plug bagay sa mga laruan mo pwede mo din pailawin hahaha
Post by: remington on Nov 18, 2013 at 11:05 AM
oo ba may ipapaampon pala ako sayo na power plug bagay sa mga laruan mo pwede mo din pailawin hahahauy ok yan! sige see you soon he he!
Post by: ATJr. on Nov 18, 2013 at 12:31 PM
this preamp is what i call "pancit molo"......:D
from Tony's Audio Kitchen......:D
Post by: remington on Nov 18, 2013 at 01:28 PM
glad you like it....Ayos sarap ng pancit molo he he!
this preamp is what i call "pancit molo"......:D
from Tony's Audio Kitchen......:D
Post by: ATJr. on Nov 24, 2013 at 08:52 AM
thanks to Henry Chua for hosting the event...
the aim of the seminar is to encourage would be tube DIY'ers..
https://www.facebook.com/johnaray.dimaunahan/posts/259669654180516?comment_id=959722&offset=0&total_comments=1¬if_t=mentions_comment
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-prn2/1466125_259669640847184_281539685_n.jpg)
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-ash3/1454886_259669480847200_1473325427_n.jpg)
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-ash3/1463952_259669377513877_126427061_n.jpg)
(https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-ash4/1391765_259669270847221_1142948564_n.jpg)
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-ash3/1458430_259669104180571_1169063019_n.jpg)
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-prn2/988370_259669000847248_2083958945_n.jpg)
Post by: remington on Dec 05, 2013 at 11:09 AM
(http://i1295.photobucket.com/albums/b622/remington0624/themaster_zps872d4c3a.jpg) (http://s1295.photobucket.com/user/remington0624/media/themaster_zps872d4c3a.jpg.html)
Post by: Chorus on Dec 05, 2013 at 11:13 AM
Post by: remington on Dec 05, 2013 at 11:17 AM
bro resize mo yung pic masyado malaki nakakalula ;Dok yan para kitang kita he he!
Post by: Chorus on Dec 05, 2013 at 11:23 AM
Post by: remington on Dec 05, 2013 at 11:30 AM
kelan kaya ulit tutorial ni Master naka attend ka ba dyan?hindi e pwede naman pumasyal sa kanila special one on one session pa! di ba master he he...
Post by: Chorus on Dec 05, 2013 at 11:37 AM
hindi e pwede naman pumasyal sa kanila special one on one session pa! di ba master he he...'
hahaha sabagay
Post by: ATJr. on Dec 05, 2013 at 12:20 PM
ang motivation ko sa pagbigay ng lectures ay para mahikayat yung
mga techies sa elab na gumawa ng tube amps, karamihan sa kanila solid state
at computers ang background pero willing naman sila matuto...
i am not getting any younger, sayang naman kung walang mga bagong sibol
ang magtutuloy sa tubes....
there are still millions upon millions of tubes in the USA and Europe, at
kahit dito sa atin marami pa ring natutuklasan na stash of tubes....
a few months ago, Edrel stumbled upon a big box of tubes
from a seaman somewhere in Malate area...
he gave them to me and for 2500 pesos, over two hundred of them
can be used in an audio amplifier although many of them are
tv tubes....what' to complain about? :D
Post by: ATJr. on Dec 05, 2013 at 12:23 PM
hindi e pwede naman pumasyal sa kanila special one on one session pa! di ba master he he...
oo naman....
sa totoo lang pag napupunta ka sa house, dun lang ako nakakapakinig ng mas matagal....
kaya nga for having trusting me for your audio amp needs, i am making you my offcial
tube tester, all my prototypes will go to you for testing and listening testing...
i value your criticisms as invaluable....:D
Post by: geriboy on Dec 05, 2013 at 12:49 PM
oo naman....
sa totoo lang pag napupunta ka sa house, dun lang ako nakakapakinig ng mas matagal....
kaya nga for having trusting me for your audio amp needs, i am making you my offcial
tube tester, all my prototypes will go to you for testing and listening testing...
i value your criticisms as invaluable....:D
wow, congrats sir remington :)
Post by: remington on Dec 05, 2013 at 01:11 PM
Post by: Chorus on Dec 06, 2013 at 09:41 AM
speechless naman ako master! Thanks for the trust!!! ;D ;D ;D
punta sa bahay ni reminton nandun mga obra maestra ni master
sa tuwing pupunta ako kila Jun parang ayoko na umuwi hehehe
Post by: ATJr. on Dec 06, 2013 at 09:45 AM
Post by: remington on Dec 06, 2013 at 09:46 AM
punta sa bahay ni reminton nandun mga obra maestra ni mastersarap kasi mag sound trip e ano bro? he he
sa tuwing pupunta ako kila Jun parang ayoko na umuwi hehehe
Post by: remington on Dec 06, 2013 at 09:49 AM
abangan yung susunod.....pancit bihon......:Duy masarap nanaman yan he he
Post by: Chorus on Dec 06, 2013 at 09:54 AM
uy masarap nanaman yan he he
sama ulit ako dyan
Post by: remington on Dec 06, 2013 at 12:56 PM
sama ulit ako dyanayos session ulit...sana makuha ko na yung rsl para ma test din ^-^
Post by: Chorus on Dec 06, 2013 at 01:04 PM
ayos session ulit...sana makuha ko na yung rsl para ma test din ^-^
dayuhin na yan. kelan ba ipapapick-up?magyaya ka pa ng ibang tropa magdadala ako pancit malabon hehehe
Post by: remington on Dec 06, 2013 at 01:11 PM
dayuhin na yan. kelan ba ipapapick-up?magyaya ka pa ng ibang tropa magdadala ako pancit malabon heheheang layo kasi pampangga pa pero baka sa sunday matuloy na he he...sana... OT na tayo sorry master!
Post by: Chorus on Dec 06, 2013 at 01:18 PM
abangan yung susunod.....pancit bihon......:D
sakto yung bagong laruan mo sa pancit bihon ni master
Post by: remington on Dec 06, 2013 at 01:33 PM
sakto yung bagong laruan mo sa pancit bihon ni masteroo nga... kaabang-abang nanaman, ibang flavor galing kay master.
Post by: ATJr. on Dec 11, 2013 at 09:15 AM
high open loop gains tamed by negative overall feedback
for consistent gain between channels and even lower output impedance....
if we were to gauge the success of the Musical Fidelity x10d tube buffers,
then you will probably like this preamp also as they use the same topology...
(http://diyaudioprojects.com/Tubes/12AX7_Preamp/F01schematic.jpg)
notice the very striking similarity with silicon rey's preamp...
http://www.diyaudio.com/forums/siliconray-online-electronics-store/200120-6j4-6p6-hifi-preamplifier-kit.html
notice that while a 6AU6 7 pin rf tube pentode and a 6V6 octal power tube used, they are connected as triodes...
operated at higher currents for lower output impedance...
but at relatively lower currents so that the tubes are not stressed in any way, therefore
long life for the tubes is assured....
(http://gallery.siliconray.com/var/resizes/tube-amplifiers/6j4%2B6p6p-preamplifier-kit/3.jpg?m=1322471882)
(http://www.diyaudio.com/forums/attachments/siliconray-online-electronics-store/272546d1332088692-6j4-6p6-hifi-preamplifier-kit-preamp-glow.jpg)
i am building a clone but using the 13FM7 dissimilar triodes, another TV tube....
Post by: remington on Dec 11, 2013 at 02:40 PM
Post by: remington on Dec 15, 2013 at 05:06 PM
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN6896_zps44108c25.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN6896_zps44108c25.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN6895_zpsec42fe36.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN6895_zpsec42fe36.jpg.html)
very detailed ang SQ at malamig sa tenga. You can listen for hours without having ear fatigue and head ache ^-^ ^-^ ^-^
Post by: tony on Dec 15, 2013 at 05:08 PM
gawan mo ng scorecard, 6H8c/6SN7 vs. 13FM7..... :D
Post by: remington on Dec 15, 2013 at 05:58 PM
Post by: tony on Dec 15, 2013 at 07:26 PM
Post by: remington on Dec 19, 2013 at 09:40 AM
Post by: tony on Dec 19, 2013 at 12:10 PM
master walang itulak kabigin dito sa 13FM7 at 6H8 na pre amp sa detail at crispness, lahat ng makarinig parehas ang impression the only difference is the gain mas malakas ang 6H8.
that's good to know....i am coming up with a "gain" knob on the 13FM7 so that users can compensate...:D
in another preamp, that's revision 1.....
Post by: tony on Dec 23, 2013 at 08:16 AM
17 x 14 x 2 1/2 aluminum chassis for the power amps...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4082_zps7798272f.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4082_zps7798272f.jpg.html)
12 x 8 x 2 aluminum chassis for preamps...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4081_zpsd42f0d4a.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4081_zpsd42f0d4a.jpg.html)
16 off JJ EL34 tubes..
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4080_zpsa5e7057f.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4080_zpsa5e7057f.jpg.html)
4 off A631 clone OPT's..
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4078_zps50ac8922.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4078_zps50ac8922.jpg.html)
2 off power traffos, 1 3/4 x 3 inch stack....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4077_zps956134e0.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4077_zps956134e0.jpg.html)
Post by: remington on Dec 23, 2013 at 09:26 AM
Post by: Chorus on Dec 23, 2013 at 09:29 AM
another big project :)
may mga bago ka nanaman?hehehe
Post by: remington on Dec 23, 2013 at 11:23 AM
may mga bago ka nanaman?hehehehindi ako may ari nyan bro pero mukhang another big challenge for master tonyT!!!
Post by: remington on Dec 23, 2013 at 10:57 PM
Post by: remington on Jan 17, 2014 at 11:54 AM
http://www.xtremeplace.com/yabbse/index.php?topic=160027.0
Post by: tony on Jan 17, 2014 at 12:24 PM
master check this out ang lupit! :o :o :o
http://www.xtremeplace.com/yabbse/index.php?topic=160027.0
yes, i have been following that thread for a long time now....scary is the word to describe....:D
i saw one 833 tube at Deeco....i am sure meron kay Gerry...
Post by: remington on Jan 17, 2014 at 12:44 PM
Post by: tony on Jan 17, 2014 at 12:53 PM
but the biggest challenge for any diy'er is the output transformer as insulation requirements are entirely different...
Post by: tony on Jan 28, 2014 at 06:33 PM
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20PPP/IMG_4151_zps87dca71a.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20PPP/IMG_4151_zps87dca71a.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20PPP/IMG_4158_zpsa20900ed.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20PPP/IMG_4158_zpsa20900ed.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20PPP/IMG_4163_zpse07e12e8.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20PPP/IMG_4163_zpse07e12e8.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20PPP/IMG_4157_zps65c5b64e.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20PPP/IMG_4157_zps65c5b64e.jpg.html)
Post by: remington on Jan 28, 2014 at 09:37 PM
Post by: kimmy_kimmy on Jan 28, 2014 at 09:42 PM
EL34 parallel push-pull...
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20PPP/IMG_4151_zps87dca71a.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20PPP/IMG_4151_zps87dca71a.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20PPP/IMG_4158_zpsa20900ed.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20PPP/IMG_4158_zpsa20900ed.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20PPP/IMG_4163_zpse07e12e8.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20PPP/IMG_4163_zpse07e12e8.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20PPP/IMG_4157_zps65c5b64e.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20PPP/IMG_4157_zps65c5b64e.jpg.html)
congrats sir ton, another masterpiece.
kakulay ng ginawa mong class d amp ko, very nice!
Post by: tony on Feb 01, 2014 at 05:41 AM
this is a tube rectified 6h8/6SN7 full function preamp with DSelf type vintage phono stage..
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4169_zpscc797727.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4169_zpscc797727.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4170_zpsc2d2f9be.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4170_zpsc2d2f9be.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4172_zps25f1f5ae.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4172_zps25f1f5ae.jpg.html)
Post by: kimmy_kimmy on Feb 01, 2014 at 12:05 PM
Post by: tony on Feb 01, 2014 at 12:09 PM
sir ton, pwede bang bumisita ulit at makinig? :)
puntahan mo kay remington ung unit, marikina rin sya..........kinuha na ung preamp.....:D
Post by: kimmy_kimmy on Feb 01, 2014 at 12:13 PM
puntahan mo kay remington ung unit, marikina rin sya..........kinuha na ung preamp.....:D
copy sir ton, thanks :)
Post by: tony on Feb 01, 2014 at 12:15 PM
Post by: remington on Feb 01, 2014 at 12:59 PM
^ thanks kimmy.....there are more to come...:Dinitial impression on this pre amp after an hour of listening....ayos!!! still on burning stage pero buhay na buhay ang sq very engaging... ang sarap pumikit at namnamin ang tunog parang chami sa delicious restaurant sa binondo habang tumatagal sumasarap he he!!! Another excellent masterpiece! Keep it coming master... Pati byenan ko pumasok dito sa listenimg room at nakinig din he he!!!
this is a tube rectified 6h8/6SN7 full function preamp with DSelf type vintage phono stage..
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4169_zpscc797727.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4169_zpscc797727.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4170_zpsc2d2f9be.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4170_zpsc2d2f9be.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4172_zps25f1f5ae.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4172_zps25f1f5ae.jpg.html)
Post by: kimmy_kimmy on Feb 01, 2014 at 01:02 PM
Post by: remington on Feb 01, 2014 at 01:07 PM
with built-in phonostage?yes sir with phono stage!
Post by: kimmy_kimmy on Feb 01, 2014 at 02:06 PM
yes sir with phono stage!
yes sir with phono stage!
nice and tempting :)
pwede pakinig pag free ka sir?
Post by: remington on Feb 01, 2014 at 11:35 PM
nice and tempting :)your very much welcome sir pm mo lang ako and you will be accommodated anytime sir ;)
pwede pakinig pag free ka sir?
Post by: Chorus on Feb 02, 2014 at 08:31 AM
your very much welcome sir pm mo lang ako and you will be accommodated anytime sir ;)
i-sked na yan hehehe
Post by: remington on Feb 02, 2014 at 09:16 AM
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN8343_zpsb918611e.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN8343_zpsb918611e.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN8348_zps6f29302e.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN8348_zps6f29302e.jpg.html)
spike footing (courtesy of bro chorus) dagdag pogi points ;)
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN8345_zpsa4cc0c21.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN8345_zpsa4cc0c21.jpg.html)
Post by: Chorus on Feb 02, 2014 at 01:37 PM
Post by: kimmy_kimmy on Feb 02, 2014 at 01:59 PM
Post by: remington on Feb 03, 2014 at 02:54 PM
wow ganda na ;)dag dag pogi points at height para sa ventelation sa ilalim. Thanks to you bro!
Post by: tony on Feb 03, 2014 at 03:22 PM
Post by: xbase on Feb 03, 2014 at 03:27 PM
emblem for identity ;)
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN8343_zpsb918611e.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN8343_zpsb918611e.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN8348_zps6f29302e.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN8348_zps6f29302e.jpg.html)
spike footing (courtesy of bro chorus) dagdag pogi points ;)
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN8345_zpsa4cc0c21.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN8345_zpsa4cc0c21.jpg.html)
ang pogi na dati, ngayong lalo pang gumanda...hehehe.... pasabay sa schedule...
Post by: remington on Feb 03, 2014 at 07:54 PM
Post by: xbase on Feb 03, 2014 at 09:10 PM
sure bro sched natin pag maganda na pakinggan MA para ma side by side natin sa AN. papahiramin din ako ni master ng KT88 na SET power amp sa weekend...exited na ko!!! ;) ;) ;)
Wow! buo na kt88, naku baka mapadalas ang pag diet ko para makapabuo na rin ng kt88...hehehe...
Post by: remington on Feb 03, 2014 at 09:50 PM
Wow! buo na kt88, naku baka mapadalas ang pag diet ko para makapabuo na rin ng kt88...hehehe...Nakita ko bro last saturday yung bagong kt88/6550 na push pull na binubuo ni master sigurado mag do-double time ka pag da diet he he!
Post by: xbase on Feb 03, 2014 at 10:17 PM
Nakita ko bro last saturday yung bagong kt88/6550 na push pull na binubuo ni master sigurado mag do-double time ka pag da diet he he!
yan na nga ba ang sinasabi ko eh... hehehe... salamat sa pag introduce kay master... surely, pag iipunan natin yan...
Post by: tony on Feb 04, 2014 at 06:59 AM
this is a class AB2 6550 pp amp....
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4167_zps7e232da4.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4167_zps7e232da4.jpg.html)
Post by: remington on Feb 04, 2014 at 09:01 AM
Post by: xbase on Feb 04, 2014 at 12:52 PM
coming soon.....
this is a class AB2 6550 pp amp....
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4167_zps7e232da4.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4167_zps7e232da4.jpg.html)
i'm sure super ganda neto pag natapos...
bro louie ito yung sinasabi ko sayo na binubuo ni master... macho ang dating!!! :o
tulo laway na nga ako bro...hehehe...
Post by: tony on Feb 04, 2014 at 12:59 PM
but as long as you don't overload your amp, this should not be a problem.....
Post by: remington on Feb 04, 2014 at 03:02 PM
nice footing, is that three or four?overlooked your question master 4pcs.
Post by: tony on Feb 05, 2014 at 06:49 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4214_zps50cf68b5.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4214_zps50cf68b5.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4215_zpsd60d2dd5.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4215_zpsd60d2dd5.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4213_zps4935a203.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4213_zps4935a203.jpg.html)
Post by: remington on Feb 05, 2014 at 06:56 PM
Post by: xbase on Feb 05, 2014 at 07:18 PM
this amp found a new home..... ;)
The beauty of big bottle! Anu specs master? Sana pwede mapakinggan...hehehe...
Post by: tony on Feb 05, 2014 at 08:04 PM
The beauty of big bottle! Anu specs master? Sana pwede mapakinggan...hehehe...
12 watt single ended....the new owner is a member here but is shy to post,
if he sees your post he may let you listen to it....
Post by: remington on Feb 17, 2014 at 12:21 PM
^ thanks kimmy.....there are more to come...:Dhad an audio session last saturday night with friends using this pre amp with 3 different tube amps and it really paired well with them. It also responded very well to tube rolling, the audible difference everytime we change tubes are really heard. Very nice work master you done it again!!!
this is a tube rectified 6h8/6SN7 full function preamp with DSelf type vintage phono stage..
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4169_zpscc797727.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4169_zpscc797727.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4170_zpsc2d2f9be.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4170_zpsc2d2f9be.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4172_zps25f1f5ae.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4172_zps25f1f5ae.jpg.html)
Post by: dana on Feb 17, 2014 at 12:40 PM
kailangan makapasyal na jan remington...nagpapalakas lan, kagagaling lan sa measles (kung kelan matanda, tsaka tinamaan, mas potent...)
bising bisi pala sa R & D skunkworks ni master tony...
Post by: tony on Feb 17, 2014 at 12:45 PM
yung 6V6 and demo unit ko dito......:D
pag-balik nung 6V6, iko-convert ko yung input buffer to a line amp, para talagang integrated na sya at no need na ng preamp....
Post by: remington on Feb 17, 2014 at 12:56 PM
ang gaganda naman nyan.oo nga sir very busy si master tony dami nya ginagawa nowadays. Grabe epidemic na talaga yang measels....naku wag naman sana ako tamaan di pa din ako nagkakaroon nyan e! Sked natin sir pag ok ka na para magka jamming he he.
kailangan makapasyal na jan remington...nagpapalakas lan, kagagaling lan sa measles (kung kelan matanda, tsaka tinamaan, mas potent...)
bising bisi pala sa R & D skunkworks ni master tony...
Post by: tony on Feb 17, 2014 at 01:26 PM
Post by: remington on Feb 17, 2014 at 01:33 PM
Post by: xbase on Feb 17, 2014 at 03:01 PM
oo nga para di tamaan ;D
Ako, tinamaan ng virus, kailangan ko ng bakuna ni master, ung pre amp na ginamit natin last saturday, match made in heaven. Hehehe...
Post by: tony on Feb 17, 2014 at 03:27 PM
Post by: xbase on Feb 17, 2014 at 03:43 PM
ibang klaseng virus yan.....mahirap mawala....:D
One of your great creation master. After hearing the combo setup with the pre amp, we (jun and i) were stunned how good it is...
Post by: remington on Feb 17, 2014 at 04:28 PM
One of your great creation master. After hearing the combo setup with the pre amp, we (jun and i) were stunned how good it is...yup ganda talaga ng combination match na match parang virus ng ebola "deadly" he he
Post by: Tsnad on Feb 17, 2014 at 07:06 PM
yup ganda talaga ng combination match na match parang virus ng ebola "deadly" he he
kung malapit lang kayo naka rekta na ako dyan.... >:D >:D dami project ni sir tony ^-^
Post by: dana on Feb 18, 2014 at 11:38 AM
Don, kaya pala medyo scarce ka these days.....para matuloy ka na kay remington, ipapahiram ko yung 6V6 pp amp ni Ron, merong akong RCA's at ST bottles ng 6V6....tube rolling ulit....:D
yung 6V6 and demo unit ko dito......:D
pag-balik nung 6V6, iko-convert ko yung input buffer to a line amp, para talagang integrated na sya at no need na ng preamp....
uyy, maganda nga yan.
mukhang maganda rin yang 6C33 SET amp papa tony...
cge, sana matapos ang Feb, matuloy na kami ni remington...rem, balitaan mo ako ako convenient schedule kahit may kasabay para di masyado istorbo...
Post by: tony on Feb 18, 2014 at 11:45 AM
kung malapit lang kayo naka rekta na ako dyan.... >:D >:D dami project ni sir tony ^-^
si remington and "wine tester" ko, kung okey sa kanya happy na ako...:D
Post by: tony on Feb 18, 2014 at 11:46 AM
uyy, maganda nga yan.
mukhang maganda rin yang 6C33 SET amp papa tony...
cge, sana matapos ang Feb, matuloy na kami ni remington...rem, balitaan mo ako ako convenient schedule kahit may kasabay para di masyado istorbo...
Don, yan yung dinala ko sa Dusit noon, but as always, speaker matching ang key......:D
dapat siguro palakihan na ni remington yung listening room nya, 3 persons ang optimum, pag more than that, medyo masikip na.... >:D >:D
Post by: remington on Feb 18, 2014 at 11:57 AM
uyy, maganda nga yan.ok lang sir kahit walang kasabay masarap nga may ka jamming mag sound trip he he! PM no lang ako wag lang this weekend may lakad. ;)
mukhang maganda rin yang 6C33 SET amp papa tony...
cge, sana matapos ang Feb, matuloy na kami ni remington...rem, balitaan mo ako ako convenient schedule kahit may kasabay para di masyado istorbo...
si remington and "wine tester" ko, kung okey sa kanya happy na ako...:Dnakaka flatter naman master! ^-^
Post by: tony on Feb 18, 2014 at 12:07 PM
hindi sumasama ang loob ko kapag napipintasan ang gawa ko, 8)
siguradong me matututuhan ako doon, and do better next time.... ;D
Post by: remington on Feb 18, 2014 at 12:25 PM
Post by: remington on Feb 20, 2014 at 11:36 AM
this amp found a new home..... ;)Had a chance to hear this amp to the owners rig last night and it sang beautifully paired with an aaudio 3way FS speaker. detailed,airy at mataba ang SQ ganda din ng boses at malambing! Sabi nung isang kasama namin tunog mayaman daw he he!
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4214_zps50cf68b5.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4214_zps50cf68b5.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4215_zpsd60d2dd5.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4215_zpsd60d2dd5.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4213_zps4935a203.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4213_zps4935a203.jpg.html)
Post by: tony on Feb 20, 2014 at 11:52 AM
Post by: dana on Feb 20, 2014 at 03:03 PM
this amp found a new home..... ;)
(http://this amp found a new home..... ;)
[url=http://s5.photobucket.com/user/leoman53/media/IMG_4214_zps50cf68b5.jpg.html][img width=800 height=600]http://i5.photobucket.com/albums/y155/leoman53/IMG_4214_zps50cf68b5.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4214_zps50cf68b5.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4215_zpsd60d2dd5.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4215_zpsd60d2dd5.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4213_zps4935a203.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4213_zps4935a203.jpg.html)
Had a chance to hear this amp to the owners rig last night and it sang beautifully paired with an aaudio 3way FS speaker. detailed,airy at mataba ang SQ ganda din ng boses at malambing! Sabi nung isang kasama namin tunog mayaman daw he he!
Dana-
ganda ng pagkabanat ng chassis color netong 6c33 papa tony, ang linis tingnan.
ganda cguro, kung ung wood siding, pininturahan rin ng light oil based white/gray color, para terno at kita pa rin ang haspe-shabby chic
Post by: remington on Feb 20, 2014 at 09:08 PM
Post by: tony on Feb 21, 2014 at 07:53 AM
Post by: tony on Mar 05, 2014 at 07:03 PM
tweaking and testing follows...
(http://i20.photobucket.com/albums/b201/tecson/EL34%20pp/IMG_4372a.jpg) (http://s20.photobucket.com/user/tecson/media/EL34%20pp/IMG_4372a.jpg.html)
(http://i20.photobucket.com/albums/b201/tecson/EL34%20pp/IMG_4376a.jpg) (http://s20.photobucket.com/user/tecson/media/EL34%20pp/IMG_4376a.jpg.html)
(http://i20.photobucket.com/albums/b201/tecson/EL34%20pp/IMG_4341.jpg) (http://s20.photobucket.com/user/tecson/media/EL34%20pp/IMG_4341.jpg.html)
(http://i20.photobucket.com/albums/b201/tecson/EL34%20pp/IMG_4377.jpg) (http://s20.photobucket.com/user/tecson/media/EL34%20pp/IMG_4377.jpg.html)
Post by: remington on Mar 06, 2014 at 10:08 AM
Post by: Tsnad on Mar 06, 2014 at 10:13 AM
ayos :o parinig ako nyan master ^-^
sama ako.... ^-^
Post by: remington on Mar 06, 2014 at 11:22 AM
sama ako.... ^-^ayos para masarap ang audition he he!
Post by: tony on Mar 09, 2014 at 01:52 PM
topology is like a mulard 5-20, but uses a 12at7 input and 5965 LTP's..
operated as a beam pentode with G2 regulation using an 0A2 gas regulator tube..
more than generous filtering in the power supply....
(http://i20.photobucket.com/albums/b201/tecson/12W6%20PP%20amplifier/IMG_4389.jpg) (http://s20.photobucket.com/user/tecson/media/12W6%20PP%20amplifier/IMG_4389.jpg.html)
(http://i20.photobucket.com/albums/b201/tecson/12W6%20PP%20amplifier/IMG_4393.jpg) (http://s20.photobucket.com/user/tecson/media/12W6%20PP%20amplifier/IMG_4393.jpg.html)
(http://i20.photobucket.com/albums/b201/tecson/12W6%20PP%20amplifier/IMG_4384.jpg) (http://s20.photobucket.com/user/tecson/media/12W6%20PP%20amplifier/IMG_4384.jpg.html)
(http://i20.photobucket.com/albums/b201/tecson/12W6%20PP%20amplifier/IMG_4383.jpg) (http://s20.photobucket.com/user/tecson/media/12W6%20PP%20amplifier/IMG_4383.jpg.html)
(http://i20.photobucket.com/albums/b201/tecson/12W6%20PP%20amplifier/IMG_4382.jpg) (http://s20.photobucket.com/user/tecson/media/12W6%20PP%20amplifier/IMG_4382.jpg.html)
Post by: tony on Mar 09, 2014 at 01:55 PM
you can have a chance to listen to how a beam pentode sounds like,
as compared to ultra-linear amps using the traditional power tubes...
TV tubes are not suitable for ultra linear because of their low screen voltage specs,
but these tubes are high transconductance and therefore linear even at low
plate voltages....:D
Post by: remington on Mar 09, 2014 at 02:36 PM
Post by: kimmy_kimmy on Mar 09, 2014 at 02:43 PM
Post by: remington on Mar 09, 2014 at 02:53 PM
pwede sumabit? :)PM lang katapat nyan sir and off we go he he...
Post by: kimmy_kimmy on Mar 09, 2014 at 02:54 PM
Post by: fishda on Mar 09, 2014 at 02:58 PM
Post by: Tsnad on Mar 10, 2014 at 10:14 AM
available at Remington's place by this coming weekend....:D
you can have a chance to listen to how a beam pentode sounds like,
as compared to ultra-linear amps using the traditional power tubes...
TV tubes are not suitable for ultra linear because of their low screen voltage specs,
but these tubes are high transconductance and therefore linear even at low
plate voltages....:D
sana makasama.... >:D ^-^
Post by: remington on Mar 10, 2014 at 11:19 AM
sana makasama.... >:D ^-^sama na sir para masaya hehe!!!
Post by: Tsnad on Mar 10, 2014 at 11:22 AM
sama na sir para masaya hehe!!!
kailan b sir yan...
Post by: remington on Mar 10, 2014 at 11:30 AM
kailan b sir yan...wala pa sched sir makukuha ko palang yung amp this weekend sabi ni master tony
Post by: Tsnad on Mar 10, 2014 at 11:35 AM
Post by: tony on Mar 10, 2014 at 11:48 AM
Post by: Gino on Mar 10, 2014 at 11:53 AM
Post by: remington on Mar 10, 2014 at 05:27 PM
Remington, the amp is ready for pick-up any day starting today... :Dok master...ayos hehe! sms nalang ako pag maaga maka labas ng shop. Thanks!!!
Post by: remington on Mar 11, 2014 at 11:39 PM
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN9022_zpsdf04858a.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN9022_zpsdf04858a.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN9018_zpsb48643dc.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN9018_zpsb48643dc.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN9014_zps6ebead4d.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN9014_zps6ebead4d.jpg.html)
Post by: audiojunkie on Mar 11, 2014 at 11:45 PM
Post by: remington on Mar 11, 2014 at 11:47 PM
Ganda... :o :oganda nga sir lalo in person eye catching he he!
Post by: kimmy_kimmy on Mar 11, 2014 at 11:56 PM
ganda nga sir lalo in person eye catching he he!
congrats sir! bago ulit?
Post by: remington on Mar 11, 2014 at 11:59 PM
congrats sir! bago ulit?hindi akin ito sir pinaganda lang namin ni kit_art.Member din dito may ari ako lang nag post...ayaw magpakilala e he he.
Post by: xbase on Mar 12, 2014 at 12:40 AM
Post by: tony on Mar 12, 2014 at 07:47 AM
Post by: remington on Mar 12, 2014 at 09:14 AM
congrats to Kit, meron pang top hats yung mga power trannie, di ko na-imagine yon..... :D :D :Dnahirapan kami ni kit magkalas nung previous na wood sidings master naka tago mga screws tapos nung makabit namin ayaw naman tumunog nagtampo yata...in the end tumunog din he he!!! tuwa nung may ari pumogi lalo amp nya.
Post by: remington on Mar 13, 2014 at 06:12 PM
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN9025_zps7bba3036.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN9025_zps7bba3036.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN9024_zps1d8e2b9a.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN9024_zps1d8e2b9a.jpg.html)
ninanamnam pa ^-^ ^-^ ^-^
Post by: kimmy_kimmy on Mar 13, 2014 at 06:27 PM
Post by: remington on Mar 13, 2014 at 06:31 PM
nice, mainit init pa ata ha :)yes sir fresh from master tonyT's kitchen umuusuk-usok pa he he! initial impression.....matutuwa ang mga basshead na mahilig sa tubo at grabe ang gain he he...
Post by: tony on Mar 20, 2014 at 09:43 AM
gain is way too high so took care of that,
the 0A2 regulator blinks, a sign that is it is
running out of current on music peaks,
took care of that too..
noticed that one sylvania 12W6 red plates at 15 volts bias,
so i replaced the entire set with RCA 12EN6's,
no more red plates....
the current setup now is, 12EN6 output tubes, 5814 long tail pair phase inverter,
and 12AV7 as input tube....although the JJ 12at7 and siblings had more gain and decent sound,
i found out that 12AV7 is even better in that spot, perhaps becuase the 12AV7 has lower rp than the
12at7.....so i am working the amp real hard now.....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4437_zps63d30d45.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4437_zps63d30d45.jpg.html)
Post by: tony on Mar 20, 2014 at 10:03 AM
nice, mainit init pa ata ha :)
Jay, you are welcome to drop by to see this amp and to discuss your plans....
some people are coming over to look at the amp......:D
Post by: kimmy_kimmy on Mar 20, 2014 at 11:16 AM
Jay, you are welcome to drop by to see this amp and to discuss your plans....
some people are coming over to look at the amp......:D
thanks sir ton, sent you pm.
Post by: tony on Mar 20, 2014 at 11:22 AM
Post by: kimmy_kimmy on Mar 23, 2014 at 06:07 PM
ganda ng amp ni sir remington, congrats :)
nice to meet sir vhinx earlier
Post by: tony on Mar 23, 2014 at 06:45 PM
sir ton, thanks for accomodating me earlier.
ganda ng amp ni sir remington, congrats :)
nice to meet sir vhinx earlier
my pleasure also....:D
i wanted to highlight what mere TV tubes can do....:D
Post by: remington on Apr 11, 2014 at 09:22 PM
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN9719_zpsac2d74d0.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN9719_zpsac2d74d0.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/DSCN9721_zps7aac44a2.jpg) (http://s1295.photobucket.com/user/remington0624/media/DSCN9721_zps7aac44a2.jpg.html)
Post by: tony on Apr 24, 2014 at 07:10 PM
intended as a replacement for the Dynaco ST70 amps,
but can be used on other amps as well...
the board is an FR4 type and is thru the courtesy of Edrel Sison...
i am making this a test bed for future power amp builds,
12AV7(12at7/6201) input tube and 5418(12au7) long tail pair splitter
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4532_zpsd56dff8d.jpg)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4533_zps019a1cbe.jpg)
Post by: tony on Apr 24, 2014 at 08:02 PM
uses the 6CM7 and the 6J9 in a Marantz 9 inspired circuit...
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4524_zps65217bc8.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4524_zps65217bc8.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4525_zps135746c2.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4525_zps135746c2.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4526_zpsf48bef51.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4526_zpsf48bef51.jpg.html)
Post by: tony on Apr 25, 2014 at 08:09 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4519_zpscde278d0.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4519_zpscde278d0.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4521_zps755518e8.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4521_zps755518e8.jpg.html)
Post by: remington on Apr 25, 2014 at 08:37 PM
Post by: tony on Apr 26, 2014 at 12:22 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4553_zpsd9082324.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4553_zpsd9082324.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4554_zps13b8a636.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4554_zps13b8a636.jpg.html)
Post by: kimmy_kimmy on Apr 26, 2014 at 12:49 PM
Post by: tony on Apr 26, 2014 at 06:25 PM
sir ton, congrats sa new creation
Post by: tony on Apr 29, 2014 at 07:38 AM
http://www.diyaudio.com/forums/tubes-valves/211254-those-magnificient-television-tubes-4.html
so you will understand my fascination for TV tubes.....:D
Quote
smoking-amp:
More complete data now.
Watt dissipation now included. And since one would expect plate knee current to inherently increase with Watts, the last number gives a figure of merit: mA/Watt diss. (a row of *** after the best ones, 24 and above)
Tube: Plate current knee in mA for 150 V on g2 and 0 V on g1: then plate Watt diss.: then mA/W figure of merit
6LR6 1200 30W 40 ********************
6LF6 1144 40W 28.6 ***************
6KG6/EL509 1135 34W 33.4 ***************
13E1 1120 90W 12.4
6MH6 1100 38.5W 28.6 ***************
6MB6 1080 35W 30.9 ***************
6LX6/6KD6/6MC6/26HU5 1080 30W 32.7 ****************
6LW6 1050 40W 26.3 ****** high W *****
6KN6 1050 30W 35 *******************
6LZ6 940 30W 31 ******************
6LB6 825 30W 27.5 *****************
6JE6C/6JS6C/6MJ6 789 30W 26.3 **************
6JE6 762 24W 32 *****************
6JS6/6HF5 749 28W 27 ***************
6LG6 740 28W 26.4 ***************
6LQ6 715 30W 24 *********
6DQ5 700 24W 29 *****************
6ME6 700 30W 23.3 ********
6JF6/6JG6 660 17W 39 ******************
6KM6 630 20W 31.5 *****************
6HJ5 610 24W 25.4 ***********
6JR6/6JU6 600 17W 35.3 ****************
6JZ6/21HB5A 560 18W 31 ****************
12HE7 550 10-15W 55-37 ****************
6GB5/29KQ6/EL500 500 17W 29.4 ***************
6KV6 488 (630?) 20-28W 24.4-31.5 ***************
6HB5/6GY5/6KE6/16KA6/21JV6 475 18W 26.4 ***************
6EX6 460 22W 21
6CB5/A 440 23/26W 17
6CD6/GA 422 15/20W 21
6GT5/6GJ5/6JT6/6GW6/6JB6 380 17.5W 21.7
6GE5 350 17.5W 20
6GF5 345 9W 38.3 ****(ONLY 9W)
6JM6/6JN6/6FW5/6GC6 340 17.5/18W 19.4
6DQ6B/6GV5 330 17.5/18W 18.3
6DQ6A 280 18W 15.5
6JA5/10JA5 276 19W 14.5
6LU8/6LR8/6MY8 265 14/16W 19
6AV5GA/6BQ6GA 255 11W 23
KT120 221 60W 3.7
KT90 220 50W 4.4
6550A 190 35W 5.4
KT88 170 35W 4.9
6GK6 84 13.2W 6.4
6JC5 80 19W 4.2
6L6GC 75 30W 2.5
6HB6 70 10W 7
6V6GA 45 14W 3
Post by: tony on Apr 30, 2014 at 10:29 AM
is "red plating" since cathode is common to both sections,
the only way to balance currents in both plates is thru fixed bias....
(actually there are two other mods that can be done, one is by manipulating
the filament voltage, and the other by tweaking the screen grid voltage
from its set point of about 200 volts....i am looking to implement these
in my upcoming 829b builds)
(http://i5.photobucket.com/albums/y155/leoman53/Audioromy%20829B/IMG_4580_zpsffed1ac1.jpg) (http://s5.photobucket.com/user/leoman53/media/Audioromy%20829B/IMG_4580_zpsffed1ac1.jpg.html)
in order to fix the issue, i changed bias to cathode resistor bias instead...
(http://i5.photobucket.com/albums/y155/leoman53/Audioromy%20829B/IMG_4566_zps24b2cf9d.jpg) (http://s5.photobucket.com/user/leoman53/media/Audioromy%20829B/IMG_4566_zps24b2cf9d.jpg.html)
a 270 ohm 5 watt resistor drops 17 volts, so that at idle, total
plate dissipation for both tubes is about 26 watts, so that either
plate is dissipating about 13 watts...remember that this tube can dissipate 60 watts...
so that longer life expectancy for the 829b is more or less secured.... 8)
before mods..
(http://i5.photobucket.com/albums/y155/leoman53/Audioromy%20829B/IMG_2564_zps5e69b464.jpg) (http://s5.photobucket.com/user/leoman53/media/Audioromy%20829B/IMG_2564_zps5e69b464.jpg.html)
after mods..
(http://i5.photobucket.com/albums/y155/leoman53/Audioromy%20829B/IMG_4564_zpsd184bc36.jpg) (http://s5.photobucket.com/user/leoman53/media/Audioromy%20829B/IMG_4564_zpsd184bc36.jpg.html)
other mods included changing plate caps to ceramic type...
(http://i5.photobucket.com/albums/y155/leoman53/Audioromy%20829B/IMG_4571_zps4bb91e35.jpg) (http://s5.photobucket.com/user/leoman53/media/Audioromy%20829B/IMG_4571_zps4bb91e35.jpg.html)
the nylon type used was actually a solderless connector...
(http://i5.photobucket.com/albums/y155/leoman53/Audioromy%20829B/IMG_4572_zps2d00ec62.jpg) (http://s5.photobucket.com/user/leoman53/media/Audioromy%20829B/IMG_4572_zps2d00ec62.jpg.html)
Post by: remington on Apr 30, 2014 at 10:43 AM
Post by: tony on Apr 30, 2014 at 10:57 AM
ayos master maririnig ba natin bukas yan?
yes of course, if you want... ;)
Post by: remington on Apr 30, 2014 at 11:05 AM
yes of course, if you want... ;)Nice!!! See you tommorrow master.
Post by: remington on May 01, 2014 at 10:21 PM
the boys:
(http://i1295.photobucket.com/albums/b622/remington0624/IMG_6223_zpsf990034f.jpg) (http://s1295.photobucket.com/user/remington0624/media/IMG_6223_zpsf990034f.jpg.html)
from left to right: joken,remington,tubesolidstate,xbase,master tony,wufei
dynaco st70 and amx pre amp of sir tube solidstate
(http://i1295.photobucket.com/albums/b622/remington0624/IMG_6224_zpsac7d2669.jpg) (http://s1295.photobucket.com/user/remington0624/media/IMG_6224_zpsac7d2669.jpg.html)
829b push pull power amp of sir sagitsit
(http://i1295.photobucket.com/albums/b622/remington0624/IMG_6221_zps39834d48.jpg) (http://s1295.photobucket.com/user/remington0624/media/IMG_6221_zps39834d48.jpg.html)
el34 and 6bm8 SET amp of wufei
(http://i1295.photobucket.com/albums/b622/remington0624/IMG_6215_zps726f22a1.jpg) (http://s1295.photobucket.com/user/remington0624/media/IMG_6215_zps726f22a1.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/IMG_6216_zps37d3f48e.jpg) (http://s1295.photobucket.com/user/remington0624/media/IMG_6216_zps37d3f48e.jpg.html)
the master examining the vintage sansui tube amp of sir tubesolidstate.
(http://i1295.photobucket.com/albums/b622/remington0624/IMG_6213_zpsc5a746b8.jpg) (http://s1295.photobucket.com/user/remington0624/media/IMG_6213_zpsc5a746b8.jpg.html)
discussion time
(http://i1295.photobucket.com/albums/b622/remington0624/IMG_6220_zps32229e8c.jpg) (http://s1295.photobucket.com/user/remington0624/media/IMG_6220_zps32229e8c.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/IMG_6219_zpsbf9d7e2a.jpg) (http://s1295.photobucket.com/user/remington0624/media/IMG_6219_zpsbf9d7e2a.jpg.html)
b&w 685 being driven by the dynaco st70 and amx pre amp
(http://i1295.photobucket.com/albums/b622/remington0624/IMG_6229_zps66df4b23.jpg) (http://s1295.photobucket.com/user/remington0624/media/IMG_6229_zps66df4b23.jpg.html)
one of the masters creation push pull el34
(http://i1295.photobucket.com/albums/b622/remington0624/IMG_6227_zps106dcdff.jpg) (http://s1295.photobucket.com/user/remington0624/media/IMG_6227_zps106dcdff.jpg.html)
Audio nirvana in action with one of the masters creation
(http://i1295.photobucket.com/albums/b622/remington0624/IMG_6212_zpsea977767.jpg) (http://s1295.photobucket.com/user/remington0624/media/IMG_6212_zpsea977767.jpg.html)
Post by: tubesolidstate on May 01, 2014 at 10:46 PM
Post by: remington on May 01, 2014 at 11:19 PM
It was nice meeting you all !nice meeting you as well sir!
Post by: tony on May 02, 2014 at 07:52 AM
thanks guys, it was a learning experience for me....
after all, taga gawa lang naman ako ng amps.... :D
i could say though that the speaker created by Jun is worthy to be displayed at Dusit...
Post by: shrek7 on May 02, 2014 at 08:20 AM
we can do this again if the weather is not too hot...... :)very sweet combo ang amp mo sir at ang diy speaker ni sir jun! Thats 4 sure!!!
thanks guys, it was a learning experience for me....
after all, taga gawa lang naman ako ng amps.... :D
i could say though that the speaker created by Jun is worthy to be displayed at Dusit...
Post by: dana on May 02, 2014 at 08:59 AM
sana masundan ulet ..will make sure makasama rin ako :)
dagdag review naman at comments sa mga gears/toys presented by our leading men :)
Post by: remington on May 02, 2014 at 09:10 AM
we can do this again if the weather is not too hot...... :)thanks master at hindi ako napahiya sa mga sinabi ko sa iyong praises sa AN. Hindi lang pala talaga ako ang nagagandahan sa SQ nito...and thanks also for the accommodation am sure mauulit pa ito >:D >:D >:D
thanks guys, it was a learning experience for me....
after all, taga gawa lang naman ako ng amps.... :D
i could say though that the speaker created by Jun is worthy to be displayed at Dusit...
Post by: remington on May 02, 2014 at 09:37 AM
ang gagaling at ang saya naman nyan!sayang nga sir hindi ka naka punta am sure your would be suggestions and insight will be an additional learning for us!
sana masundan ulet ..will make sure makasama rin ako :)
dagdag review naman at comments sa mga gears/toys presented by our leading men :)
Post by: tony on May 02, 2014 at 09:46 AM
very sweet combo ang amp mo sir at ang diy speaker ni sir jun! Thats 4 sure!!!
yes, Jun has the EL34pp amp that we used at Dusit, he now changed to 6L6GC finals and liked it better...
Post by: tony on May 02, 2014 at 09:48 AM
ang gagaling at ang saya naman nyan!
sana masundan ulet ..will make sure makasama rin ako :)
dagdag review naman at comments sa mga gears/toys presented by our leading men :)
Dana, you are of course always welcome, but compared to what you have, ours are merely toys....;)
Post by: tony on May 02, 2014 at 09:50 AM
thanks master at hindi ako napahiya sa mga sinabi ko sa iyong praises sa AN. Hindi lang pala talaga ako ang nagagandahan sa SQ nito...and thanks also for the accommodation am sure mauulit pa ito >:D >:D >:D
i am sure Audio Nirvana was a winner........
we just don't want to hype it that much, baka magtaas ng price..... :D
Post by: remington on May 02, 2014 at 09:51 AM
Dana, you are of course always welcome, but compared to what you have, ours are merely toys....;)I agree... parang audio museum ang bahay ni sir dana sa dami ng gears....and still counting!!! Nakaka lula sa dami.
Post by: Tsnad on May 02, 2014 at 05:18 PM
Post by: remington on May 03, 2014 at 02:33 PM
merun pala special guest, yung bigtime andyan pala si Boss Randy... >:D >:Dganda nung dynaco st70 at pre amp nyang dala sir swabe ang tunog bagay sa AN hehe!
Post by: tony on May 03, 2014 at 09:03 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4589_zps3c4caef7.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4589_zps3c4caef7.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4592_zps5b84617c.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4592_zps5b84617c.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4594_zps0718f0bd.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4594_zps0718f0bd.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4595_zps2a65e1fc.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4595_zps2a65e1fc.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4596_zps434647da.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4596_zps434647da.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4599_zpsf5206075.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4599_zpsf5206075.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4603_zps8d2c4bcb.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4603_zps8d2c4bcb.jpg.html)
Post by: remington on Jun 11, 2014 at 08:13 PM
12J5 tube buffer ;)
(http://i1295.photobucket.com/albums/b622/remington0624/SAM_0133_zpsd2b6681e.jpg) (http://s1295.photobucket.com/user/remington0624/media/SAM_0133_zpsd2b6681e.jpg.html)
in action...
(http://i1295.photobucket.com/albums/b622/remington0624/SAM_0137_zps43e069c4.jpg) (http://s1295.photobucket.com/user/remington0624/media/SAM_0137_zps43e069c4.jpg.html)
Post by: tony on Jun 12, 2014 at 01:48 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4652_zps541e1502.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4652_zps541e1502.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4650_zpsa69d3f7f.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4650_zpsa69d3f7f.jpg.html)
Post by: remington on Jun 12, 2014 at 03:53 PM
Post by: tony on Jun 15, 2014 at 06:50 PM
ang ganda nyang 10Y pre amp ni sir larry (camotque) hinahanap ng tenga ko SQ nyan! Next project natin yan master hehe...congrats sir larry and nice meeting you! lalo sigurong maganda sa mga horns mo yan sir! ^-^
i have the 1624, 30, 3Q5GT and other peanut tubes that are directly heated cathodes to try in a line amp, looking for a 26 tube....
Post by: tony on Jun 19, 2014 at 07:57 AM
EF86 buffered by 6N1P driving the 829b paralleled sections in triode mode
(http://i5.photobucket.com/albums/y155/leoman53/829b%20SET/IMG_4673_zpsdcc6563c.jpg) (http://s5.photobucket.com/user/leoman53/media/829b%20SET/IMG_4673_zpsdcc6563c.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/829b%20SET/IMG_4672_zps6a09d5fd.jpg) (http://s5.photobucket.com/user/leoman53/media/829b%20SET/IMG_4672_zps6a09d5fd.jpg.html)
Post by: remington on Jun 19, 2014 at 08:30 AM
Post by: tony on Jun 19, 2014 at 09:19 AM
nice!!! ayan na :o :o :o!!!maririnig ko na din ;D ;D ;D
kailangan lang kaunting sunog-sunog pa.....by sunday siguro....pagtripan ko muna... >:D >:D >:D
pero yung can drop by to have a listen... ;)
Post by: tony on Jul 03, 2014 at 05:11 PM
those who want to build this, here is the schematic, took me 5 minutes to design...
i can say that the plate characteristics curve were spot on....
operating point is about 6mA at 150 volts plate..
the cathode resistor used 820 ohms, but values from 560 to 1k can be used...
btw, you can ask Edrel to make the power traffo for you, i will give him details
or if you want to wind it yourself, pm me for details...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4719_zps3990c0f7.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4719_zps3990c0f7.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4653_zpsc9d90cff.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4653_zpsc9d90cff.jpg.html)
Post by: CoolTOYZPH on Jul 03, 2014 at 05:12 PM
Post by: rochie on Jul 03, 2014 at 05:59 PM
12j5 tube rectified buffer....
those who want to build this, here is the schematic, took me 5 minutes to design...
i can say that the plate characteristics curve were spot on....
operating point is about 6mA at 150 volts plate..
the cathode resistor used 820 ohms, but values from 560 to 1k can be used...
btw, you can ask Edrel to make the power traffo for you, i will give him details
or if you want to wind it yourself, pm me for details...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4719_zps3990c0f7.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4719_zps3990c0f7.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4653_zpsc9d90cff.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4653_zpsc9d90cff.jpg.html)
ayos sir Tony, magandang project to interesado ako dito,mga magkano kaya aabutin ng transformer nito kay sir Edrel?baka pwedeng maka purchase sa inyo sir Tony ng mga tubes nito tsaka pati yung case na din?
Post by: tony on Jul 03, 2014 at 06:04 PM
pm mo na lang si Edrel for the traffo...
kung hindi after sa looks, meron akong isang traffo dito...
Post by: rochie on Jul 03, 2014 at 06:22 PM
merong 12J5 kay Gerry Sta. Maria...not after the looks sir Tony, importante is function muna :) pabulong ako sir kung magkano yung traffo.
pm mo na lang si Edrel for the traffo...
kung hindi after sa looks, meron akong isang traffo dito...
Post by: tony on Jul 03, 2014 at 06:47 PM
not after the looks sir Tony, importante is function muna :) pabulong ako sir kung magkano yung traffo.
had another look, but the spare one has no filament winding for tube rect, so pwede sya sa ss rect only, pm'ed you anyway...
Post by: tony on Jul 03, 2014 at 06:58 PM
Post by: rochie on Jul 03, 2014 at 09:25 PM
had another look, but the spare one has no filament winding for tube rect, so pwede sya sa ss rect only, pm'ed you anyway...
cool so instead of tube rect papalitan ko lang sya ng solid state/bridge rectifier? so hindi na gagamit nung 5Y3 tube? sige Sir Tony reserve the traffo for me will schedule a pickup again sa inyo.
Post by: tony on Jul 04, 2014 at 07:09 AM
cool so instead of tube rect papalitan ko lang sya ng solid state/bridge rectifier? so hindi na gagamit nung 5Y3 tube? sige Sir Tony reserve the traffo for me will schedule a pickup again sa inyo.
okidoki.... :D
Post by: tony on Jul 19, 2014 at 11:03 AM
Quote from: tony
now playing.....amp can still use some tweaks...
EF86 buffered by 6N1P driving the 829b paralleled sections in triode mode
(http://i5.photobucket.com/albums/y155/leoman53/829b%20SET/IMG_4673_zpsdcc6563c.jpg) (http://s5.photobucket.com/user/leoman53/media/829b%20SET/IMG_4673_zpsdcc6563c.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/829b%20SET/IMG_4672_zps6a09d5fd.jpg) (http://s5.photobucket.com/user/leoman53/media/829b%20SET/IMG_4672_zps6a09d5fd.jpg.html)
sad to say, this is a failed design, i can't find tubes that have sections that are equally matched,
and since the cathodes are common to both sections, they do not conduct equally so that
the resulting distortion is audible....i suppose i can tweak this by manipulating filament
voltage to get the transconductance equal on either side, but that will be too much hard work...
so i ditched the septar socket and put in an octal socket instead....
in came the 6AV5 horizontal output tube rated for 11 watts....but in this
amp it is running about 16 watts plate dissipation, 250volts plate at 60mA cathode,
does this ring a bell? yes, it does, it is the operating point for the 2A3....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4746_zps6c995538.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4746_zps6c995538.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4745_zpsd608aa88.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4745_zpsd608aa88.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4749_zps638dff18.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4749_zps638dff18.jpg.html)
the power factor of almost 90% and a power draw of about 80watts...
the power traffo is rated for 180VA, so that the power traffo will be
very cool to touch and will last a long long time....
the high power factor is indicative of a very good power supply...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4750_zps834492cc.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4750_zps834492cc.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4751_zps785d8ccd.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4751_zps785d8ccd.jpg.html)
for those interested to design their own SET,
this is how i sized the cathode bias resistor:
for triode mode, grid 1 bias is calculated as follows:
Vg = -(Vpx0.6)/mu
mu equals 4.5 and Vp is 250 volts,
so that Vg is 40volts,
looking for 60mA. Rk, the cathode resistor then becomes,
40/60 = 600ohms, this is achieved with a parallel combination of
1k and 1.5k 5 watt resistors, making for a 600 ohm 10 watt
cathode bias resistor....this resistor dissipates 2.4 watt
so that use of a 10 watt resistor is very much justified...
it would interest you to note the in the actual amplifier,
bias was at 39.5 volts, am i lucky or what? ;)
Post by: dana on Jul 19, 2014 at 08:23 PM
6av5=12av5=2A3...same sonics? ;D
Post by: tony on Jul 20, 2014 at 07:48 AM
papa tony,
6av5=12av5=2A3...same sonics? ;D
it's been a long time since is heard a 2A3 so kinda hard to say,
a side by side listening will tell since they have the same operating points,
therefore same power output....
btw, 4D32 tube was also considered since no change of sockets was needed,
but then the power traffo needed to be change due to higher
filament draw so i ditched that one too..
the 6AV5 was the best tube to use under the situation...
the 6AV5 can be rolled with the 6FW5 for stronger plate, or the 6AU5gt...
the compactron 6GV5 is the same tube except for the plate or anode cap...
Post by: CoolTOYZPH on Jul 26, 2014 at 08:17 AM
Post by: tony on Jul 26, 2014 at 03:55 PM
this is an educational video about making transformers...
http://www.youtube.com/watch?v=s6NyTprQCBI
output and power transformer for a 4P1L parallel SET....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4765_zps23195326.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4765_zps23195326.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4764_zpsc09ad7f7.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4764_zpsc09ad7f7.jpg.html)
output and power transformer for 832b amp....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4763_zps8693c033.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4763_zps8693c033.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4762_zpsae7bb7e5.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4762_zpsae7bb7e5.jpg.html)
Post by: oweidah on Aug 01, 2014 at 12:17 PM
Post by: tony on Aug 01, 2014 at 01:19 PM
Post by: dana on Aug 01, 2014 at 02:25 PM
Post by: tony on Aug 01, 2014 at 06:00 PM
meron akong 6AS7 ST bottle tubes pwede kong ipalit sa 6AV5...
Post by: tony on Aug 02, 2014 at 08:16 AM
the 3 watt power can mislead you, sounds as loud as my 12EN6 14 watter pp amp and then some....:)
Post by: xbase on Aug 02, 2014 at 04:11 PM
Don, you are welcome to have a listen at my 6AV5 SET, like the 2A3,
the 3 watt power can mislead you, sounds as loud as my 12EN6 14 watter pp amp and then some....:)
nakaka intriga ang 6AV5 na yan master tony...
Post by: dana on Aug 03, 2014 at 07:52 AM
Don, you are welcome to have a listen at my 6AV5 SET, like the 2A3,
the 3 watt power can mislead you, sounds as loud as my 12EN6 14 watter pp amp and then some....:)
thanks papaT.
i also have that tube as spare for future projects, 12AV5 yta, somewhere out here...
sent u pm
Post by: tony on Aug 03, 2014 at 08:39 AM
nakaka intriga ang 6AV5 na yan master tony...
oo nga, beyond my expectations din....:D
ipaparinig ko lang sa isang kakailala, tapos ipapadala ko kay Jun....
Post by: tony on Aug 03, 2014 at 08:41 AM
thanks papaT.
i also have that tube as spare for future projects, 12AV5 yta, sumwher hir...
sent u pm
i also have a pair of 12AV5, apair of 6AU5's (smaller bottle) was able to do 80 watts in pp...
Post by: remington on Aug 03, 2014 at 08:00 PM
oo nga, beyond my expectations din....:Dwow ayos master makakarinig nanaman ng bagong flavor ;D
ipaparinig ko lang sa isang kakailala, tapos ipapadala ko kay Jun....
Post by: remington on Aug 15, 2014 at 07:59 PM
(http://i1295.photobucket.com/albums/b622/remington0624/SAM_0209_zpsb24bc6d7.jpg) (http://s1295.photobucket.com/user/remington0624/media/SAM_0209_zpsb24bc6d7.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/SAM_0210_zps7e610a78.jpg) (http://s1295.photobucket.com/user/remington0624/media/SAM_0210_zps7e610a78.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/SAM_0212_zpsecf709c9.jpg) (http://s1295.photobucket.com/user/remington0624/media/SAM_0212_zpsecf709c9.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/SAM_0213_zps4501ae91.jpg) (http://s1295.photobucket.com/user/remington0624/media/SAM_0213_zps4501ae91.jpg.html)
Post by: remington on Aug 15, 2014 at 09:36 PM
another 6H8 pre amp with phono stage...
(http://i1295.photobucket.com/albums/b622/remington0624/newest%20set%20up/SAM_0217_zps8fec3872.jpg) (http://s1295.photobucket.com/user/remington0624/media/newest%20set%20up/SAM_0217_zps8fec3872.jpg.html)
(http://i1295.photobucket.com/albums/b622/remington0624/newest%20set%20up/SAM_0215_zpsfb3c0bf8.jpg) (http://s1295.photobucket.com/user/remington0624/media/newest%20set%20up/SAM_0215_zpsfb3c0bf8.jpg.html)
12J9 tube rectified tube buffer...
(http://i1295.photobucket.com/albums/b622/remington0624/newest%20set%20up/SAM_0222_zpsb89e144e.jpg) (http://s1295.photobucket.com/user/remington0624/media/newest%20set%20up/SAM_0222_zpsb89e144e.jpg.html)
Post by: xbase on Aug 15, 2014 at 09:39 PM
Post by: remington on Aug 15, 2014 at 09:48 PM
Post by: tony on Aug 26, 2014 at 03:11 PM
intended to mate with my upcoming honey badger build...
uses the 6N3_5670-2C51 tube...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4815_zps21a812a0.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4815_zps21a812a0.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4822_zps22cea7fb.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4822_zps22cea7fb.jpg.html)
Post by: rochie on Aug 27, 2014 at 02:22 PM
china tube buffer na merong volume control so pwedeng preamp na rin...
intended to mate with my upcoming honey badger build...
uses the 6N3_5670-2C51 tube...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4815_zps21a812a0.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4815_zps21a812a0.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4822_zps22cea7fb.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4822_zps22cea7fb.jpg.html)
ayos din tumunog to ano sir tony? meron din ako isa nito although may transformer na di ko pa pinapatunog.
Post by: tony on Aug 29, 2014 at 03:14 PM
ayos din tumunog to ano sir tony? meron din ako isa nito although may transformer na di ko pa pinapatunog.
iginagawa ko pa ng power traffo, pero marami rami na rin ang nakagamit nito...;)
Post by: tony on Aug 29, 2014 at 03:15 PM
no global negative feedback...
plate B+ is a bit high at 405 volts, screen at 180 volts...
a slight red plate after 30 minutes so i am going to lose some plate B+
i reckon, about 9 watts per plate ought to do it...
how is the sound? i like it.... ;)
this amp comes with a phono stage built in....
(http://i5.photobucket.com/albums/y155/leoman53/832%20pp%20amp/IMG_4832_zps504aafd4.jpg) (http://s5.photobucket.com/user/leoman53/media/832%20pp%20amp/IMG_4832_zps504aafd4.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/832%20pp%20amp/IMG_4830_zpsd61ce757.jpg) (http://s5.photobucket.com/user/leoman53/media/832%20pp%20amp/IMG_4830_zpsd61ce757.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/832%20pp%20amp/IMG_4827_zps86a276b1.jpg) (http://s5.photobucket.com/user/leoman53/media/832%20pp%20amp/IMG_4827_zps86a276b1.jpg.html)
in all my builds i implement a central ground point
(http://i5.photobucket.com/albums/y155/leoman53/832%20pp%20amp/IMG_48062_zpsa525df36.jpg) (http://s5.photobucket.com/user/leoman53/media/832%20pp%20amp/IMG_48062_zpsa525df36.jpg.html)
Post by: camoteque on Aug 29, 2014 at 03:38 PM
Post by: Abad Santos 7 on Aug 29, 2014 at 03:47 PM
Post by: tony on Aug 29, 2014 at 04:10 PM
pagkatapos ng 6550 sure na...
Post by: tony on Aug 29, 2014 at 04:11 PM
Galing Talaga Master Tony 8) 8) 8)
ina-apply lang ang mga ideas na naipon ng maraming taon
na hindi ako makagawa dahil sa pagpapalaki ng mga anak...
ngayon na libre na ako....maraming pwedeng gawin...
i still have over a thousand tubes to play around with.... ;D
a thousand circuits/ideas to try... 8)
Post by: remington on Aug 29, 2014 at 09:58 PM
Post by: tony on Aug 30, 2014 at 07:34 AM
nice master pwede na ba pakinggan yan?
yes, surely makakarating din ito sa place mo...:D
Post by: kayee on Aug 30, 2014 at 09:27 AM
Post by: dana on Aug 30, 2014 at 10:16 AM
kakaiba sa usual straight or sexy bottles.
may square tube ba na Triode type pang SET? ;D
Post by: tony on Aug 30, 2014 at 11:03 AM
ganyan ang gusto kong mga tubo, kakaiba at out of this world. may sungay pa >:D.ang kapal ng glass envelope nyang 832, tama ba papaT?
kakaiba sa usual straight or sexy bottles.
may square tube ba na Triode type pang SET? ;D
yes, Don..... 8)
meron akong 829b pp amp na gagawin, 45wpc,
a bigger version of the 832.....;)
marami akong ST bottles pero square? :D
eto magandang tube...100th....
(http://jimmyauw.com/wp-content/uploads/2008/06/thiorated3.jpg)
(http://i.ytimg.com/vi/d4gXx-k0tGI/maxresdefault.jpg)
another tube i want to use....8165....
although a tetrode, it can be triode wired...
(http://theodoregray.com/periodictable/Samples/090.7/s14s.JPG)
(http://jimmyauw.com/wp-content/uploads/2011/10/EIMAC-8165-4-65.jpg)
Post by: tony on Aug 30, 2014 at 11:15 AM
Ang ganda linis ng gawa sir.......suwerte ng may ari nito boss...
kaya mo rin gumawa ng ganyan kung gugustuhin mo, tulungan kita...;)
Post by: kayee on Aug 30, 2014 at 11:42 AM
Post by: tony on Aug 31, 2014 at 12:39 PM
Sir tony marami pa ako kakainin na bigas para makabu :)o na masasabi ko na ako may gawa........ Sir yung requeat ko na phono preamp insted na ss pwede kaya na t ;D >:Di tubo na lang....
akala mo lang yon....;) yung mga set nga nakabuo ka....
sige gawa kita ng tube phono stage, pero kung ako, maganda rin na merong kang ss phono stage...
Post by: kayee on Sep 01, 2014 at 07:04 AM
Post by: tony on Sep 03, 2014 at 12:53 PM
pentode operation with G2 regulation, and big OPT's....
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4803_zpse96f6454.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4803_zpse96f6454.jpg.html)
phono stage built in.....
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4870_zpsa4362a86.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4870_zpsa4362a86.jpg.html)
big filter choke, and generous filter caps makes a very stiff psu..
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4868_zpsdf24015c.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4868_zpsdf24015c.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4869_zps778be394.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4869_zps778be394.jpg.html)
Post by: tony on Sep 07, 2014 at 08:01 PM
and 120 volt zeners for a G2 of about 400 volts....
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4875_zps3223819e.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4875_zps3223819e.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4876_zps652ecb4c.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4876_zps652ecb4c.jpg.html)
Post by: tony on Sep 13, 2014 at 10:02 AM
with the KT88, the power traffo and OPT are best utilized...
with the 6AV5 hindi man lang uminit yung power traffo... ;)
pwedeng pwede sa AN's nyo..... >:D
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4912_zps431f82f4.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_4912_zps431f82f4.jpg.html)
Post by: tony on Sep 14, 2014 at 07:10 PM
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4898_zps5dea9f91.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4898_zps5dea9f91.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4902_zps42e80297.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4902_zps42e80297.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4901_zps03f15b7b.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4901_zps03f15b7b.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4895_zps7dc1d01d.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4895_zps7dc1d01d.jpg.html)
Post by: tony on Sep 14, 2014 at 07:21 PM
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4921_zps11ef6ab4.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4921_zps11ef6ab4.jpg.html)
Post by: remington on Sep 15, 2014 at 08:47 AM
Post by: tony on Sep 15, 2014 at 04:08 PM
preliminary sound test....
(http://i5.photobucket.com/albums/y155/leoman53/6550_kt88%20class%20ab2%20pp%20amp/IMG_4921_zps11ef6ab4.jpg) (http://s5.photobucket.com/user/leoman53/media/6550_kt88%20class%20ab2%20pp%20amp/IMG_4921_zps11ef6ab4.jpg.html)
G2 is supplied 380volts thru a mosfet regulator,
plates are dissipating about 26 watts each so that
class A window is large, about 12 watts of class A is available...
no signs of stress to tubes and traffos are running cold to the touch...
Post by: tony on Sep 15, 2014 at 04:10 PM
ayos master dami nang bago!
more to come....;) starting my 829b pp amp is two weeks... >:D
Post by: tony on Sep 15, 2014 at 04:12 PM
http://www.elab.ph/forum/index.php?topic=44523.0
Post by: delinsk on Sep 15, 2014 at 06:39 PM
Post by: tony on Sep 15, 2014 at 06:41 PM
Post by: tony on Oct 06, 2014 at 10:38 AM
uses the A431 OPT copy done by Rey Luis.....
input is a 6J32/EF86 pentode, then the 6RRH8 driving a 6CG7 cathode followers....
now tweaking to resolve some minor issues.....
preamp is a CCDA 6H8C/6SN7 fed from my MD player playing Bread songs...
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20PPP/IMG_5012_zps173d3660.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20PPP/IMG_5012_zps173d3660.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20PPP/IMG_5010_zpsef487261.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20PPP/IMG_5010_zpsef487261.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20PPP/IMG_5011_zps5a4296ea.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20PPP/IMG_5011_zps5a4296ea.jpg.html)
Post by: remington on Oct 07, 2014 at 08:36 AM
Post by: tony on Oct 07, 2014 at 10:20 AM
wow master very powerful sigurado yan!!! :o
yes, it is like playing two pairs of dynaco st70 all at once....;)
Post by: tony on Oct 08, 2014 at 07:06 PM
in case you are interested...this is Vietnam tube audio...http://www.diyaudio.com/forums/tubes-valves/110212-vietnam-tube-amplifier-festival.html
(http://www.diyaudio.com/forums/attachments/tubes-valves/94687d1192595966-vietnam-tube-amplifier-festival-resize-resize-img_0130.jpg)
Post by: parasound on Oct 08, 2014 at 09:02 PM
Palagi panalo mga entry nyan sa SUMO contest nila.
Post by: remington on Oct 08, 2014 at 10:44 PM
Post by: tony on Oct 09, 2014 at 06:58 AM
Hi Sir Tony post ko na din website ni Mr. Thi http://www.thivanlabs.com/en.html
Palagi panalo mga entry nyan sa SUMO contest nila.
i dream of the day when we can have an all Pinoy DIY exhibition to showcase local creations.....
Post by: Abad Santos 7 on Oct 09, 2014 at 08:35 AM
i dream of the day when we can have an all Pinoy DIY exhibition to showcase local creations.....
Sir Tony....
Pede ba join ....hahahaha ;D ;D ;D.....Meron akong entry 45 pero pang Green Apple entry level :D :D :D.
Post by: tony on Oct 09, 2014 at 10:48 AM
Sir Tony....
Pede ba join ....hahahaha ;D ;D ;D.....Meron akong entry 45 pero pang Green Apple entry level :D :D :D.
sure, as long as your entry is your own creation and not a commercial branded unit...
and you are able to discuss your design openly with the member/participants....
if you are familiar with the European Triode Festival held annually, that is the model i envision...
http://www.triodefestival.net/
http://www.triodefestival.net/index.php?page=etf-14
Post by: parasound on Oct 09, 2014 at 01:50 PM
Post by: Abad Santos 7 on Oct 09, 2014 at 10:02 PM
sure, as long as your entry is your own creation and not a commercial branded unit...
and you are able to discuss your design openly with the member/participants....
if you are familiar with the European Triode Festival held annually, that is the model i envision...
http://www.triodefestival.net/
http://www.triodefestival.net/index.php?page=etf-14
Naku Sir Tony Hirap pala....builder lang po... hindi pa kaya ung designer level ;D ;D ;D
Post by: tony on Oct 10, 2014 at 06:50 AM
Naku Sir Tony Hirap pala....builder lang po... hindi pa kaya ung designer level ;D ;D ;D
kaya mo yan.....katuwaan lang naman....
Post by: tony on Oct 13, 2014 at 12:58 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5021_zpsdb6aef80.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5021_zpsdb6aef80.jpg.html)
Post by: parasound on Oct 13, 2014 at 02:36 PM
Post by: tony on Nov 17, 2014 at 07:32 PM
(http://i5.photobucket.com/albums/y155/leoman53/6c33/6c33017.jpg) (http://s5.photobucket.com/user/leoman53/media/6c33/6c33017.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/6c33/6c33016.jpg) (http://s5.photobucket.com/user/leoman53/media/6c33/6c33016.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/6c33/6c33018.jpg) (http://s5.photobucket.com/user/leoman53/media/6c33/6c33018.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/6c33/6c33005.jpg) (http://s5.photobucket.com/user/leoman53/media/6c33/6c33005.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/6c33/6c33002.jpg) (http://s5.photobucket.com/user/leoman53/media/6c33/6c33002.jpg.html)
Post by: remington on Nov 17, 2014 at 09:08 PM
Post by: tony on Nov 21, 2014 at 08:45 AM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4749_zps638dff18.jpg)
and draws this much power?
(http://i5.photobucket.com/albums/y155/leoman53/IMG_4750_zps834492cc.jpg)
well, Gerry Sta Maria gave me these pair of tubes, these Bendix hard glass 7403 types were intended for radar application...
this tube has a 45 sec warmup time...http://frank.pocnet.net/sheets/131/7/7403.pdf
(http://i5.photobucket.com/albums/y155/leoman53/829b%20SET/IMG_5194_zps812128c9.jpg) (http://s5.photobucket.com/user/leoman53/media/829b%20SET/IMG_5194_zps812128c9.jpg.html)
looking at plate curves, mu is around 10, better than a KT88, with g1-g2 mu of 8....
plate resistance is about 667 so a 2.5k OPT fits very well
(http://i5.photobucket.com/albums/y155/leoman53/829b%20SET/IMG_5197a_zps30c03a2d.jpg) (http://s5.photobucket.com/user/leoman53/media/829b%20SET/IMG_5197a_zps30c03a2d.jpg.html)
in action...
(http://i5.photobucket.com/albums/y155/leoman53/829b%20SET/IMG_5195_zpsf8faaa7b.jpg) (http://s5.photobucket.com/user/leoman53/media/829b%20SET/IMG_5195_zpsf8faaa7b.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/829b%20SET/IMG_5196a_zpsb9434209.jpg) (http://s5.photobucket.com/user/leoman53/media/829b%20SET/IMG_5196a_zpsb9434209.jpg.html)
power draw...better than the KT88....kaya na nyang painitin yung power traffo... ;)
(http://i5.photobucket.com/albums/y155/leoman53/829b%20SET/IMG_5187_zpsbfd16b23.jpg) (http://s5.photobucket.com/user/leoman53/media/829b%20SET/IMG_5187_zpsbfd16b23.jpg.html)
Post by: tony on Nov 23, 2014 at 10:02 AM
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20parallel%20SET/IMG_5209_zps7deb6a73.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20parallel%20SET/IMG_5209_zps7deb6a73.jpg.html)
i have changed the original power traffo rated to 250 watts to a bigger one,
this time it can handle more power and therefore runs cooler...
there is an issue, the sound goes soft after two hours of use...so on for more tweaking.... ;)
looking at the 6CL6 data sheet, recommended grid leak resistor for fixed bias was 100k,
i had 1 meg installed, no wonder then that bias tend to drift with time...
so i installed 150k grid leaks, while this made the amp load the preamp more and
had to crank the volume all the way up, this stabilized the input tube, operating points are steady now...
i used red leds to bias the cathode of the 6CL6...
and with about 200 volts at the plate, there is more than enough drive to push the EL34 grids around,
the EL34 are running 20 volt cathodes, so 200 volts being much much greater than 20 volts, there is more than enough drive...
will have to rearrange input volume controls still...
(http://i5.photobucket.com/albums/y155/leoman53/EL34%20parallel%20SET/IMG_5205_zpsb5ea8b98.jpg) (http://s5.photobucket.com/user/leoman53/media/EL34%20parallel%20SET/IMG_5205_zpsb5ea8b98.jpg.html)
Post by: oicnoreg on Nov 23, 2014 at 11:44 AM
Post by: tony on Nov 23, 2014 at 03:29 PM
Post by: tony on Nov 29, 2014 at 08:10 PM
i had a series of long phone conversations with the legendary John Poscablo who i admire very much btw....
naturally we compared notes...and it is there that i found out that there are those calling him
on the phone inquiring about amp builds and when he gives quotes, the caller would say,
'Bakit kay ka Tony ganun lang ang price, bakit sa iyo ang mahal?'
i did not ask him who the caller or callers were, i did not care...
i believe that it would be unfair and uncalled for to ask John to make an amp based on what i use to charge...
if you want a Poscablo amp build, then pay his price, simple as that....
because of this i am no longer entertaining inquiries thru pm....
not even thru the phone......
you have to come to the house and we have a face to face meeting, and then we can discuss..
and to make things clearer, i am not after the bussines of other diy'ers here,
i am a one man affair, just wanting to build amps as a hobby, since tubes are my passion...
i will not entertain jobs that are repair in nature, i hate fixing other peoples' mess...
only my own mess.....
i do not Mundorf amps, Jojod, john, mang rod or rene rivo is the men for those jobs....
restorations jobs are the specialty of rene rivo....he is the one you have to go to...
i do not offer to sell my amps, if you notice i never post in the market place selling my amps...
i post my creations in the technical thread, when they are working, you can come to house
for a look see, and if you like it then it is possible you can have it...
i am in this hobby to teach other people, mostly the younger ones than me
to make their own amps, if they learn well, then they will be able to sell amps themselves...
there are more diy'ers wanting to build amps that come to the house,
to be honest i am happier when they do....i know i am serving a purpose...:)
i do not think that as a hobbyist there is big bucks to be made, only when you are
making and selling amps by the thousands will you ever see real money...
a one or two affair never cuts it...
Post by: oicnoreg on Nov 30, 2014 at 05:22 PM
Post by: mrquery on Nov 30, 2014 at 06:35 PM
about a month ago....
i had a series of long phone conversations with the legendary John Poscablo who i admire very much btw....
naturally we compared notes...and it is there that i found out that there are those calling him
on the phone inquiring about amp builds and when he gives quotes, the caller would say,
'Bakit kay ka Tony ganun lang ang price, bakit sa iyo ang mahal?'
i did not ask him who the caller or callers were, i did not care...
i believe that it would be unfair and uncalled for to ask John to make an amp based on what i use to charge...
if you want a Poscablo amp build, then pay his price, simple as that....
because of this i am no longer entertaining inquiries thru pm....
not even thru the phone......
you have to come to the house and we have a face to face meeting, and then we can discuss..
and to make things clearer, i am not after the bussines of other diy'ers here,
i am a one man affair, just wanting to build amps as a hobby, since tubes are my passion...
i will not entertain jobs that are repair in nature, i hate fixing other peoples' mess...
only my own mess.....
i do not Mundorf amps, Jojod, john, mang rod or rene rivo is the men for those jobs....
restorations jobs are the specialty of rene rivo....he is the one you have to go to...
i do not offer to sell my amps, if you notice i never post in the market place selling my amps...
i post my creations in the technical thread, when they are working, you can come to house
for a look see, and if you like it then it is possible you can have it...
i am in this hobby to teach other people, mostly the younger ones than me
to make their own amps, if they learn well, then they will be able to sell amps themselves...
there are more diy'ers wanting to build amps that come to the house,
to be honest i am happier when they do....i know i am serving a purpose...:)
i do not think that as a hobbyist there is big bucks to be made, only when you are
making and selling amps by the thousands will you ever see real money...
a one or two affair never cuts it...
Post by: tony on Dec 01, 2014 at 06:55 AM
I will drop by again sir tony to learn from you the techs of how an amp is build.... ;-)
sure anytime....
Tony hope you don't mind if I bookmark your post. I may come in knocking on your door one of this days to learn. Sorry if OT.
you are welcome...
Post by: tony on Dec 23, 2014 at 06:26 AM
as you can see those tibes would be in the bottom of the hierarchy of tubes based on cathode
capability (transconductance).....
so can you blame me for hoarding tv scanning tubes? 8) :D
Quote
smoking-amp update,more complete:
List of knee currents for g2 = 150 V, g1 = 0 V, Vp = 60 to 80 V
<tube> <Watts> <mA knee@150Vg2> <gm> <Mu> <maxDCmA> <registered by> <date>
6LF6 40W 1144mA@150V 15K@125mA Mu3 500mADC Amperex 1968
6KG6/EL509 34W 1135mA@150V 13K@150mA Mu3.2 500mADC Amperex 1965
6MC6 33W 1130mA@150V 14K@125mA Mu4 400mADC RCA (6LX6 clone) 1972
13E1 90W(absmax) 1120mA@150V 35K@500mA Mu4.5 800mADC AEI 1961
6MH6 38.3W 1100mA@150V 14K@125mA Mu4 500mADC GE (up-rated 6LX6,6KD6,26HU5) 1972
6MB6 38W 1085mA@150V 14K@110mA Mu3.5 400mADC Sylvania 1971
6LR6 30W 1085mA@150V 16K@140mA Mu3.5 375mADC Sylvania 1968
6LX6/6KD6/26HU5 33W 1080mA@150V 14K@125mA Mu4 400mADC GE 1969/1965/1969
6LW6 40W 1050mA@150V 12K@125mA Mu3.7 400mADC GE 1971
6KN6 30W 1050mA@150V 16K@100mA Mu4.5 400mADC Sylvania 1965 (later versions are 6KD6)
6LZ6 30W 940mA@150V 11K@140mA Mu3 350mADC RCA 1971
6LB6/A 30W/35W 825mA@150V 13.4K@105mA Mu4 315mADC GE 1967
6JE6C/6JS6C 30W 789mA@150V 10.5K@130mA Mu3 350mADC Sylvania 68/69
6JE6 24W 762mA@150V 9.6K@115mA Mu3 315mADC RCA 1962
6JS6/6HF5 28W 749mA@150V 11.5K@130mA Mu3 315mADC GE 1964/1963
6MJ6 30W 740mA@150V 11K@100mA Mu3.6 350mADC RCA 1973
6LG6 28W 740mA@150V 11.5K@90mA Mu3.6 315mADC GE 1967
6LQ6 30W 715mA@150V 7.5K@95mA Mu3 350mADC RCA 1967
6ME6 30W 700mA@150V 9.6@130mA Mu3.5 350mADC RCA 1971
6DQ5 24W 690mA@150V 10.5K@110mA Mu3.3 315mADC RCA 1957
6JF6/6JG6 17W 660mA@150V 10K@80mA Mu4.1 275mADC RCA 1965/1964
6KM6 20W 630mA@150V 9.5K@80mA Mu4 275mADC RCA 1965
6HD5/6HJ5 24W 630mA@150V 10K@80mA Mu4.2 280mADC Raytheon 1962/1963
6JR6/6JU6 17W 600mA@150V 7K@45mA Mu4.7 275mADC RCA 1968/1966
6JZ6/21HB5A 18W 560mA@150V 9K@46mA Mu4.8 230mADC GE 1966/1964
12HE7 10-15W 540mA@150V 8.8K@60mA Mu4.2 200mADC GE (15W if damper disabled) 1964
6CL5 25W 514mA@150V 6.5K@90mA Mu3 240mADC Sylvania 1955
6GB5/29KQ6/EL500 17W 500mA@150V 13K@100mA Mu5.1 275mADC Amperex 1961/Matsucrapa 1959/Philips 1961?
6KV6/A 20-28W 488/610mA@150V 6K@40mA Mu4 275mADC RCA (re-rated 6KM6?) 1967/1969
6HB5/6GY5/21JV6/6KE6/16KA6 18W 475mA@150V 9.1K@50mA Mu4.7 230mADC GE/GE/GE/Ray/Tung 1962/1962/1965/1965/1964
6EX6 22W 460mA@150V 7.7K@67mA Mu4.2 220mADC Raytheon (up-rated 6CD6) 1959
6CB5/A 23W 440mA@150V 8.8K@90mA Mu3.8 240mADC RCA 1954/1956
6CD6/GA 15/20W 422mA@150V 7.7K@75mA Mu3.9 200mADC RCA/GE 1949/1954
6GT5/6GJ5/6JT6/6JB6/6GW6 17.5W 380mA@150V 7.1K@70mA Mu4.4 175mADC RCA 1961/1961/1964/1962/1961
6GE5 17.5W 350mA@150V 7.3K@65mA Mu4.4 175mADC GE 1961
6GF5 9W 345mA@150V 4.7K@34mA Mu4.2 160mADC GE 1961
6JM6/6JN6/6FW5/6GC6 17.5W 340mA@150V 7.3K@70mA Mu4.4 175mADC GE 1964/1964/1960/1960
6DQ6B/6GV5 17.5W/18W 330mA@150V 7.3K@65mA Mu4.4 175mADC GE 1959/1962
6DQ6/A 18W 280mA@150V 6.6K@55mA Mu4.1 120/155mADC CBS/RCA 1955/1956
6JA5/10JA5 19W 276mA@150V 10.3K@95mA Mu5.5 110mADC GE 1971
6LU8/6LR8//6MY8 14//16W 265mA@150V 9.3K@56mA Mu6.5 75mADC Sylvania 1964/1964//1970(Toshiba)
6AV5/GA///6BQ6/GA 11W 255ma@150V 5.9K@57mA Mu4.3 110mADC CBS/GE 1949/1955 /// CBS/Syl 1949/1953
KT120 60W 221ma@150V 190mADC
KT90 50W 220mA@150V
6Y6G/GT/GA 12.5W 200mA@150V Ray 1937/KenRad 1939/Syl 1954
6550A 35W/42W 190mA@150V 11K@140mA 190mADC
6W6GT 10W 185mA@150V 8K@46mA Mu6.2 65mADC CBS 1939
KT88 35W 170mA@150V 175mADC
6CA7/EL34 25W 107mA@150V 11K@100mA Mu10.5 150mADC Philips 1952
6JC5 19W 80mA@150V 4.1K@43mA Mu7 75mADC Sylvania 1971
6L6/G/GA/GB/GC 30W 77mA@150V 4.7K@40mA Mu8 110mADC RCA 1936/Ray 1936/Syl 1943/Syl 1954/GE 1958
6HB6 10W 70mA@150V 20K@40mA Mu33 60mADC Raytheon 1961
6GK6 13.2W 65mA@150V 11.3K@48mA Mu19 65mADC CBS 1959
6BQ5/EL84 12W 65mA@150V 11.3K@48mA Mu19.5 65mADC Rogers 1956
6V6G/GT 14W 45mA@150V 4.1K@45mA Mu9.8 40mADC KenRad 1936/CBS 1939
Post by: tony on Dec 25, 2014 at 10:44 AM
improving upon the issues i was having with the input stage...
i decided to replace the 6J32/EF86 with the 12at7 in an aikido configuration....
B+ of 400 volts and 2mA.....
this is going to be a final na for this amp...
lessons learned here will be used in my next SET builds, the 4D32 SET...
(http://i5.photobucket.com/albums/y155/leoman53/829b%20SET/IMG_5195_zpsf8faaa7b.jpg)
this is the circuit for those of you who want to try....
cathode followers used to isolate the input aikido and make it do its "thing"...
not bothered by the miller of the output tube....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5319_zpsa13b4fd9.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5319_zpsa13b4fd9.jpg.html)
without fear, i can definitely say that the 7403 is a poor mans' 300B, very good all around....
those who would like to hear this amp up close and personal, my official amplifier taster, remington
will take this amp to drive his AN speakers and find out.....i hope he returns a favorable verdict...
but if not, then there are always room for improvement.... ;)
Post by: tony on Dec 25, 2014 at 10:47 AM
WE have won favor with God....
With God, nothing is impossible...
A blessed Christmas to all....
And a Prosperous New year...
Post by: JojoD818 on Dec 25, 2014 at 12:26 PM
Post by: remington on Dec 25, 2014 at 12:45 PM
Post by: tony on Dec 25, 2014 at 01:28 PM
Merry Christmas Tony! 8)
Same to you and your family Jojo...more amps to make in 2015...
Post by: tony on Dec 25, 2014 at 01:29 PM
thats very flattering master :-[ "amplifier taster" but very much excited indeed :o makakarinig nanaman ng bagong masterpiece coming from your kitchen ^-^ can't wait for tomorrow ;D
i mean it when i say you have have been a very important help to me....can't thank you enough.....;)
Post by: remington on Dec 26, 2014 at 05:40 PM
initial listening impression :) sarap pang critical listening! very detailed!!! :)
Post by: dana on Dec 27, 2014 at 05:22 PM
finally, napasyalan ko rin kun san niluluto ni Master Chef etong mga tube dishes..daming projects in the pipeline..
jun, mapasyalan jan sa inyo, to listen with your set-up :)
Post by: remington on Dec 27, 2014 at 06:05 PM
Post by: tony on Dec 30, 2014 at 08:54 PM
ever wondered why many prefer to use triodes instead of pentodes in a single ended amp?
partly because triodes are more linear than pentodes, and the reason for that is,
local negative feedback is already built in with triodes....
with triodes there are two ways to control plate current...
one is by grid voltage and the other is by plate voltage..
mu tends to decrease with increase in plate voltage,
while plate resistance increases with increase in plate voltage...
with triodes, mu and plate resistance are affected by plate voltage,
while transconductance is affected in direct proportion to cathode current...
so where is all this leading to?
a few years ago, i purchased 20 pcs of 21HB5 compactron tv tubes...
as you can see from above heirarchy of tubes, this tube promises to
be even better than the 6AV5 wich have proven to sound good triode wired...
so i picked up my pen and paper and did some rough calculations...
what if i use 10 of these, five bottles per channel?
this tube is rated for 18 watts in a horizontal scanning duty,
but this tube can do more, so that running then at 18 watts is no
big deal, 5 of them paralleled can run 90 watts, so that 20 watts of power is possible,
perhaps more...and considering that these are U$1 tubes...
an added bonus is that just over 300 volts of B+ is required,
no scary voltages need be used... 8)
Post by: tony on Jan 10, 2015 at 06:54 PM
a Pinoy engineer based in Seattle, Washington and in collaboration with Dandy F. Menor of
Baguio came up with a board design, they now sell kits of good quality parts and very low cost..
some progress report...
resistors are lifted off board by about 1/16 inch so as air can circulate freely..
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5323_zps27b524c9.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5323_zps27b524c9.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5325_zpsa26109c7.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5325_zpsa26109c7.jpg.html)
one board almost done, used shrink tube to physicaly couple input ltp trannies..
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5324_zpsf127b428.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5324_zpsf127b428.jpg.html)
two boards done....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5326_zps3624f51f.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5326_zps3624f51f.jpg.html)
with a heatsink, both board assemlies will share a common heatsink..
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5328_zps5b628100.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5328_zps5b628100.jpg.html)
Post by: rochie on Jan 12, 2015 at 01:21 PM
Post by: tony on Jan 12, 2015 at 04:41 PM
Post by: rochie on Jan 12, 2015 at 05:00 PM
oy, kuha ako ng another pair of kits.....yung traffo na narescue ko sa akia reciever, 30-0-30 ang secondary, kaya imbes na 40 watts lang lalabas 70 to 80 watts ang power nya...
ayos sir Tony, will ship to you the pair of kits tom.
Post by: geriboy on Jan 12, 2015 at 05:12 PM
Post by: tony on Jan 12, 2015 at 06:31 PM
Sir tony, anong amp yan? Dual mono amp ba iyan?
dual mono amps.....
Post by: geriboy on Jan 12, 2015 at 07:46 PM
Post by: tony on Jan 12, 2015 at 08:32 PM
wow ok. do you have some links regarding the specs and details of the dual mono amp?
this amp boards are for diy'ers to build and learn from....
but you are of course welcome to hear it once it is up and running...
from elab....http://www.elab.ph/forum/index.php?topic=42590.0
Post by: geriboy on Jan 12, 2015 at 08:38 PM
Post by: tony on Jan 20, 2015 at 09:39 AM
tony's redline...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5331a_zpsa9f5b305.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5331a_zpsa9f5b305.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5330_zpsdbe9b6ca.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5330_zpsdbe9b6ca.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5329_zpsd44262c9.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5329_zpsd44262c9.jpg.html)
Post by: tony on Feb 05, 2015 at 10:45 AM
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xaf1/v/t1.0-9/10304870_896670263687942_655847272214397167_n.jpg?oh=cd05c7562423324e6ad893a39cd84f81&oe=555E847C&__gda__=1433130242_e5efa287ecaba090afc99d5f333c6549)
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/10968530_896670247021277_5052927655976407738_n.jpg?oh=9361268b35780fa1e55a437593ef92c0&oe=555E0315&__gda__=1432772013_7417b32c1aa3f4392fd51fc8fba2728e)
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/1510991_896670293687939_5714790447581222209_n.jpg?oh=0c7295463c1718f1faee56ba0b95e9ed&oe=554F9D3E&__gda__=1431019173_730b5d5459ace866e8d0d16b3f2f5d51)
Post by: tony on Feb 08, 2015 at 05:28 PM
just as i thought he has retired, he comes up with a 100 watter mono blocks amps....
http://www.turneraudio.com.au/100w-monobloc3-2014.html
looking at his output transformers, i wonder, to what standards do commercial
offerings refer to? i have seen branded KT88 tube amps using 1 inch cores... :o
i asked him why re readily gives away his designs, he said, even if he does, he is not sure how others will do his opt... 8)
(http://www.turneraudio.com.au/100w-monobloc3-2014_files/100W-UL-AB1-OPT-2k0-1r-to-16r-28March2014.gif)
UL triode wired amp using kt120...
(http://www.turneraudio.com.au/100w-monobloc3-2014_files/100w-ULab1-amp3-1x12AU7-2xECC99-4xKT120-sh1-14Mar14.GIF)
Post by: Abad Santos 7 on Feb 09, 2015 at 12:42 PM
Maybe a good project for 2015 O0 O0 O0 O0
Post by: tony on Feb 09, 2015 at 01:43 PM
Sir Tony,
Maybe a good project for 2015 O0 O0 O0 O0
i have something better..... >:D >:D >:D
120 watts from a single pair of 4D32, or 300watts from a single pair of QE08-200 tubes....
but notice his OPT, 2 inch center leg stacked 2 inches, now where to get M6 cores?
Edrel has some Z11 but 1 3/4.....
Post by: camoteque on Feb 09, 2015 at 03:26 PM
i have something better..... >:D >:D >:D
120 watts from a single pair of 4D32, or 300watts from a single pair of QE08-200 tubes....
but notice his OPT, 2 inch center leg stacked 2 inches, now where to get M6 cores?
Edrel has some Z11 but 1 3/4.....
Tony triode-connected ba yang 4D32? Malakas siya for a single-ended amp.
Post by: tony on Feb 09, 2015 at 04:23 PM
Tony triode-connected ba yang 4D32? Malakas siya for a single-ended amp.
pentode push-pull....but i am also making a 4d32
single ended amp good for 20 watts, >:D
i already have the OPT's...
first, i will have to finish your 4P1L SET,
nakasalang na sa kitchen table ko.... 8)
Post by: Abad Santos 7 on Feb 09, 2015 at 10:43 PM
i have something better..... >:D >:D >:DSir Tony... Type ko sana ung maraming KT88 kaso wala akong makita n schematic...
120 watts from a single pair of 4D32, or 300watts from a single pair of QE08-200 tubes....
but notice his OPT, 2 inch center leg stacked 2 inches, now where to get M6 cores?
Edrel has some Z11 but 1 3/4.....
Post by: tony on Feb 10, 2015 at 07:34 AM
Sir Tony... Type ko sana ung maraming KT88 kaso wala akong makita n schematic...
if you noticed it, the 6L6, El34, 6550, KT88 have the
same pin-outs so you have a lot of choices..
just jumper pin 1 and 8 and you are good to go,,
you can use the same circuit i posted above...
the above topology is what i use when doing power amps
of more than 30 watts, Patrick turner seems to like it...
it was borne out of the mullard 5-20 input and phase splinter topology..
many amps used the same like harman citation 5, and even the carver silver 7....
90% of tube amps is the output transformer...
get the OPT right and you can have a mighty fine tube amp..
you can ask Edrel to make one for you using M6/Z11 cores,
i am willing to help you out should you decide to build one...
KT88's can now be purchased localy at a very reasonable price...
Post by: camoteque on Feb 10, 2015 at 10:36 AM
first, i will have to finish your 4P1L SET,
nakasalang na sa kitchen table ko.... 8)
Tapusin na natin yan! Ha ha!
Post by: Abad Santos 7 on Feb 10, 2015 at 08:58 PM
if you noticed it, the 6L6, El34, 6550, KT88 have the
same pin-outs so you have a lot of choices..
just jumper pin 1 and 8 and you are good to go,,
you can use the same circuit i posted above...
the above topology is what i use when doing power amps
of more than 30 watts, Patrick turner seems to like it...
it was borne out of the mullard 5-20 input and phase splinter topology..
many amps used the same like harman citation 5, and even the carver silver 7....
90% of tube amps is the output transformer...
get the OPT right and you can have a mighty fine tube amp..
you can ask Edrel to make one for you using M6/Z11 cores,
i am willing to help you out should you decide to build one...
KT88's can now be purchased localy at a very reasonable price...
Sir Tony,
Once natapos ung current project ko, sigurado ito ang next.
Would definitely ask for some help.
Regards,
Post by: tony on Feb 11, 2015 at 09:51 AM
Sir Tony,
Once natapos ung current project ko, sigurado ito ang next.
Would definitely ask for some help.
Regards,
sure, i am happiest when dealing with fellow diy'ers...:D
Post by: tony on Feb 11, 2015 at 10:18 AM
so what to do?
well, i replaced to octal socket to septar 7 pin socket once more,
this amp has gone full circle, from a failed 829b set to a 5898....http://www.r-type.org/exhib/aaa0001.htm
(http://i5.photobucket.com/albums/y155/leoman53/829b%20SET/IMG_5196a_zpsb9434209.jpg)
the difference between the 829 and 5894 tubes are:
1. 5894 has a single cathode, this makes the transconductance identical for both plates
since there is only one source of cathode currents unlike in the 829b which had two cathodes tied together..
2. the 829b has 30 watts of plate dissipation per plate compared to just 20 watts for the 5894
3. the plate pins are thicker on the 5894 than with the 829b....
some are of the opinion that these two tubes are interchangeable, this maybe
but i caution you that plate caps once used in the 5894 will not be usable for the 829b anymore
as it would have become loose...
after rewiring...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5401_zpsqsddq6ip.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5401_zpsqsddq6ip.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5405_zpst2hhvi9y.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5405_zpst2hhvi9y.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5405_zpst2hhvi9y.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5405_zpst2hhvi9y.jpg.html)
power draw is around 110 watts, very similar to the 7403....
operating point is 300volts plate at 80mA cathode, for about 12 watts per plate...
this is way below the 40 watt limit for this tube...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5397_zpsrotwtksp.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5397_zpsrotwtksp.jpg.html)
in the dark....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5409_zpslxwk2oq5.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5409_zpslxwk2oq5.jpg.html)
Post by: tony on Feb 17, 2015 at 07:20 PM
www.jacmusic.com/nos/images/Fakes/index.htm
Post by: CoolTOYZPH on Feb 17, 2015 at 07:30 PM
Thank You.
beware of fakes....fakes tubes are everywhere....another reason why i like teeve toobs.....
https://www.google.com.ph/search?q=thick+film+technology&oq=thick+film+technology&aqs=chrome..69i57&sourceid=chrome&es_sm=93&ie=UTF-8
Post by: tony on Feb 18, 2015 at 06:29 AM
Post by: tony on Feb 18, 2015 at 04:54 PM
i spent U$240, lost to a guy from Indonesia...those were for 10 pcs each of Toshiba
p and n type dual jfets...when the goods arrived, they were relabeled npn and pnp dual bjt's instead.
never got my money back, i still have those fakes with me as a reminder...
Post by: tony on Feb 21, 2015 at 11:57 AM
(http://i5.photobucket.com/albums/y155/leoman53/2D7FE23B_zps7wbmbjsz.jpg) (http://s5.photobucket.com/user/leoman53/media/2D7FE23B_zps7wbmbjsz.jpg.html)
built using the Russian 6H8C, 6SN7 equivalent...
circuit is a Broskie CCDA implementation using 47k plate/cathode resistors,
and 820 ohm 1st cathode bias resistor..
the 5Z4 rectifier tube was harvested from a Sakura AV200 hybrid amp....
side view,,,
(http://i5.photobucket.com/albums/y155/leoman53/C563BB22_zpsp6o3xedf.jpg) (http://s5.photobucket.com/user/leoman53/media/C563BB22_zpsp6o3xedf.jpg.html)
Post by: tony on Feb 27, 2015 at 05:11 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5458.bmp_zpsvkko4dw2.jpeg) (http://s5.photobucket.com/user/leoman53/media/IMG_5458.bmp_zpsvkko4dw2.jpeg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5457.bmp_zpsoya4fwln.jpeg) (http://s5.photobucket.com/user/leoman53/media/IMG_5457.bmp_zpsoya4fwln.jpeg.html)
Post by: tetablanco on Mar 23, 2015 at 06:02 AM
Post by: tony on Mar 23, 2015 at 08:21 AM
Tony: Only after reading through all pages of this thread did I come to understand your frustrations in having your babies wind up in the hands of a roller who does not truly appreciate the time, effort, dedication, and ingenuity that you pour into each. Looking forward to coming over and listening to your works of technological art real soon. Thanks.
i am a tubehead, tube electronics are my passion, i make tube amps as a hobby, not as a way to earn a living...
i do not sell tubes as a rule, but for fellow diy'ers i do a swapping deal mostly..
if i sell my amps, it is only for the purpose of rolling funds so i can make another amp...
in other forums i contribute what i can to help younger people make their own tube amps,
and thus send them to their own tube journey....
i am busy at FB on several forums and at diyaudio.com, one of two Pinoys honored to wear a mod hat..
i am also into tube rolling, but not the kind that many who do not make their own amps do...
Post by: tetablanco on Mar 23, 2015 at 12:25 PM
i am a tubehead, tube electronics are my passion, i make tube amps as a hobby, not as a way to earn a living...
i do not sell tubes as a rule, but for fellow diy'ers i do a swapping deal mostly..
if i sell my amps, it is only for the purpose of rolling funds so i can make another amp...
in other forums i contribute what i can to help younger people make their own tube amps,
and thus send them to their own tube journey....
i am busy at FB on several forums and at diyaudio.com, one of two Pinoys honored to wear a mod hat..
i am also into tube rolling, but not the kind that many who do not make their own amps do...
:)
Post by: tony on Mar 23, 2015 at 06:48 PM
to make a pp power amp....thanks to my FB friends for the help in acquiring these items...
will design the OPT for use in this amp, B+ at around 700volts....
(https://scontent-sea.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/10482247_919351104753191_1232383807229049770_n.jpg?oh=87f01ab9174244ebc1f618cae58d38e5&oe=5579EDD0)
(https://scontent-sea.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/11084301_919351128086522_6965701468987111739_n.jpg?oh=ec107ee765c95693fe5b7cb10258710e&oe=55AD97DF)
Post by: kayee on Mar 24, 2015 at 05:08 PM
Post by: tony on Mar 24, 2015 at 06:33 PM
sir tony picture pag buo mo na itong GU50 na amp.... ^-^
sure thing...:D
kamusta na nga pala yung GU50 set mo? nasimulan mo na ba?
Post by: kayee on Mar 25, 2015 at 10:17 AM
Post by: remington on Mar 25, 2015 at 10:30 AM
:) di pa rin sir but complete na yung power trafo and opt ko mag source pa ako ng maayos na capacitor may kulang pa ako....last 3 weeks ago ko lang nabuo yung 6lu8 ko may konting issue pa sa hum ^-^ hirap hanapin kung saan galing yung hum sir parang pancit kasi yung wiring ko... ^-^ di ko pa naayos but sa sq ganda sir parang naka push pull na rin ako....dami mong niluluto ngayon bro! kamusta yung classic mo?
Post by: tony on Mar 25, 2015 at 11:27 AM
:) di pa rin sir but complete na yung power trafo and opt ko mag source pa ako ng maayos na capacitor may kulang pa ako....last 3 weeks ago ko lang nabuo yung 6lu8 ko may konting issue pa sa hum ^-^ hirap hanapin kung saan galing yung hum sir parang pancit kasi yung wiring ko... ^-^ di ko pa naayos but sa sq ganda sir parang naka push pull na rin ako....
gumamit ka ng ground lifter?
pm mo ko kung anong parts ang need mo malamang meron ako nyan... ;)
you are welcome to my parts bin....
Post by: kayee on Mar 27, 2015 at 07:16 AM
dami mong niluluto ngayon bro! kamusta yung classic mo?ok na bro naayos ni benidict yung speaker ko... ^-^ di na ako kumuha kay david ng replacement mahal yung cost ng shipping....isa na lang yung project ko GU50 na lang then stop muna...hehehehe saka na mag upgrade uli. ^-^
Post by: kayee on Mar 27, 2015 at 07:22 AM
gumamit ka ng ground lifter?sir tony yung ground lifter ba di delikado and kailangan pa ata ng switch for the ground lifter..may nakuha na ako na schematic try ko sir tony yung advice mo... ^-^. cge sir pm kita sa need ko na capacitor...yung chassis muna gawin ko for the meantime...may excess pa ako na tube sa bahay na di ko na gagamitin di ko lang alam yung type ng tube baka magamit mo ito sa ibang project mo sir russian tube din kasabay ng gu50....thanks
pm mo ko kung anong parts ang need mo malamang meron ako nyan... ;)
you are welcome to my parts bin....
Post by: remington on Mar 27, 2015 at 12:01 PM
ok na bro naayos ni benidict yung speaker ko... ^-^ di na ako kumuha kay david ng replacement mahal yung cost ng shipping....isa na lang yung project ko GU50 na lang then stop muna...hehehehe saka na mag upgrade uli. ^-^buti naman at naayos ang AN! hindi ba nagbago SQ? sarap sana pakinggan mga builds mo ang layo lang hehehe. kay master tony ko nalang papakinggan GU50 ;D
Post by: tony on Mar 27, 2015 at 12:08 PM
buti naman at naayos ang AN! hindi ba nagbago SQ? sarap sana pakinggan mga builds mo ang layo lang hehehe. kay master tony ko nalang papakinggan GU50 ;D
single ended yung kay kayee, pushpull yung sa akin.....
Post by: tony on Mar 28, 2015 at 05:56 PM
(https://scontent-sea.xx.fbcdn.net/hphotos-xta1/v/t1.0-9/11091318_921681371186831_7295888207108943531_n.jpg?oh=bc3e616354041da80082d6c5185371ec&oe=55A330E6)
Post by: geriboy on Mar 28, 2015 at 05:59 PM
Post by: tony on Mar 28, 2015 at 06:07 PM
Post by: tony on Apr 06, 2015 at 09:46 AM
this is a dual mono line amp, the channels each run on their own power supply
completely independent of the other...this is a prototype preamp, not for sale....
btw, this is not an AIKIDO preamp, many of those who bought the little preamp
like the sound of it more than the Aikido, so i made another version, this time
upping it one notch higher....i have at lest 5 notches still running in my head... ;)
(https://scontent-sea.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/p180x540/11079377_926531110701857_4372154315959486907_n.jpg?oh=833d2718f74888ab4b392db6d78e922d&oe=55A39B14)
(https://scontent-sea.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/p180x540/10409362_926531154035186_6874112282052915397_n.jpg?oh=1dbb8b0a3536038b67b9d8559213d8f1&oe=559BAAF4)
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/p180x540/19104_926531130701855_1943015187027151402_n.jpg?oh=c8f3c4f6cbe4517812a626660ad70e70&oe=55E5D953&__gda__=1437954520_9b543515f1cbeb183d0d2fbe3d5402b6)
(http://scontent-sea.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/p180x540/11102866_926531137368521_1908175098556261162_n.jpg?oh=8fba6eb1437479d2e3378d547f89d7b4&oe=55E62668)
Post by: remington on Apr 06, 2015 at 10:42 AM
Post by: tony on Apr 06, 2015 at 11:21 AM
Post by: tony on Apr 06, 2015 at 11:53 AM
(https://scontent-sea.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/11088075_926645334023768_6029049715322424444_n.jpg?oh=8ae49e9571cf82717fa71cae0d12ea9c&oe=55AFAA0F)
Post by: tony on Apr 09, 2015 at 02:04 PM
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xta1/v/t1.0-9/11059400_927694437252191_4295458339201750352_n.jpg?oh=570467a96fcc5730caf08cf66033c563&oe=55E36588&__gda__=1440934657_a98c18bba900127e9cff7401d5bd04ce)
Post by: tony on Apr 12, 2015 at 08:20 AM
400v plate, fixed bias and a mulard 5-20ish design....previous designs had tube
longevity as design goal...this build will punish the beam tetrodes section somewhat
and prove what more it can do...
(https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-9/11118507_929470600407908_7785011665156031839_n.jpg?oh=1e7b7ca763f7c473ce0faa3cd781a720&oe=55E2875F&__gda__=1436626563_1c0c3cf0493fd24ffa0f5134a13df932)
my second 832 pp amp in a year, as i do not do the same amp the same way,
this is going to be an LTP driven, using the 6D10 triple triode with 12at7 type plates..
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/1385982_929470650407903_5863915144091884244_n.jpg?oh=64554620e7cce8ba9d7489d5d364ac82&oe=55B069CD&__gda__=1437434096_63c90ea41af83eea1ff1d15ec7a94084)
this one is a 5 watt pp amp using the 6DX8 triode pentode tubes in a class A and aikido fromt end..
(https://scontent-hkg.xx.fbcdn.net/hphotos-xtf1/v/t1.0-9/20503_929470693741232_1998269728393901701_n.jpg?oh=30cf2344fe2b86567e9e6a274904b849&oe=559F560C)
these amps are awaiting parts back ordered and will be finished in about 3 months time...
Post by: remington on Apr 12, 2015 at 09:39 AM
Post by: tony on Apr 14, 2015 at 08:17 PM
829 push pull power amp, uses EF80 input pentode and E182CC LTP splitter.....
G2 is regulated and will be fine tuned at around 200 volts....
inspired by the Audioromy FU29, this amp uses bigger irons...
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/p180x540/11059364_930611843627117_1656674199721114164_n.jpg?oh=9cc38ee2ce695ee348cc8356a8a14d29&oe=55B13AB2&__gda__=1440483156_5574844e24451c2e34b6cde938fbce27)
(https://scontent-sea.xx.fbcdn.net/hphotos-xtf1/v/t1.0-9/p180x540/11127791_930611840293784_9024085853409339414_n.jpg?oh=16a17ea5161304deec4bdbb4c7822ad7&oe=55E4E653)
Post by: geriboy on Apr 15, 2015 at 06:23 AM
ang dami ninyo nagagawa na mga tube pre-amps at amps ah :D
Post by: tony on Apr 15, 2015 at 06:25 AM
sir tony, bakit po nagkakaroon ng mga puti-puti sa mga transformers na gawa ninyo?
ang dami ninyo nagagawa na mga tube pre-amps at amps ah :D
carbon fiber stickers yon, simulates hammertone finish....
my tube journey tells me i should make all kinds of amps,
so that i will know which ones i like,
turns out i like them all....:D
besides it is always better that you get to taste it firsthand
than merely reading about it.... ;)
in my future builds, i am doing a wood grain type lamination finish to the chassis,
since many like to add wood to the chassis, i thought why not make the chassis
look like wood? i talked to the owners of the powder coating shop and told me
that they can do it, but will cost 3 times more than the regular powder coats..
i am curious to find out how it turns out..
Post by: tony on Apr 20, 2015 at 08:59 AM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5820a_zpskbvauj3v.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5820a_zpskbvauj3v.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_5819a_zps4hjmocvh.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_5819a_zps4hjmocvh.jpg.html)
Post by: gutierrez on Apr 24, 2015 at 10:31 PM
Can someone confirm if that's just normal?
Post by: meat_eater on Apr 25, 2015 at 07:26 AM
I'm not sure if I can post my inquiry here, but I'd just like to know if any of you experience a ticking sound in your tube amp after usage for several hours (about 3 -4 hours). I just noticed it today when I turned it off, I thought it came from somewhere else but when I observed it was from the tube amp (Cayin LA34). It was intermittent. maybe about every minute or so.
Can someone confirm if that's just normal?
It could just be the glass expanding-contracting.
Post by: gutierrez on Apr 25, 2015 at 07:51 AM
It could just be the glass expanding-contracting.
Just an update, there is no clicking sound when it's unplugged from the power outlet
Post by: meat_eater on Apr 25, 2015 at 08:00 AM
Just an update, there is no clicking sound when it's unplugged from the power outlet
Then it's not the glass. The glass emits a "ticking" noise when heating and cooling.
Post by: tony on Apr 25, 2015 at 08:15 AM
I'm not sure if I can post my inquiry here, but I'd just like to know if any of you experience a ticking sound in your tube amp after usage for several hours (about 3 -4 hours). I just noticed it today when I turned it off, I thought it came from somewhere else but when I observed it was from the tube amp (Cayin LA34). It was intermittent. maybe about every minute or so.
Can someone confirm if that's just normal?
no, it is not normal.....
is the ticking sound coming from your speakers or from the amp itself?
i would suggest that you go back to the seller with your problem,
after sales service should take care of that issue...
the way the EL34 tubes and the 6L6 family of tubes are constructed
is that pin 3 which is the plate pin is closest to pin 2, a heater pin,
so the ticking sound could very well be high voltage leaking from pin 3 to pin ,
this is a weakness with these tubes, and this is something that can be fixed fortunately.. 8)
Post by: gutierrez on Apr 25, 2015 at 08:22 AM
no, it is not normal.....
is the ticking sound coming from your speakers or from the amp itself?
i would suggest that you go back to the seller with your problem,
after sales service should take care of that issue...
Sir, it's coming from the amp. The ticking sound is only there when the amp is plugged and turned OFF, but it doesn't happen when it's turned ON. The sound is similar to a clicking relay, sometimes very faint and sometimes very audible.
Post by: tony on Apr 25, 2015 at 08:24 AM
Sir, it's coming from the amp. The ticking sound is only there when the amp is plugged and turned OFF, but it doesn't happen when it's turned ON. The sound is similar to a clicking relay, sometimes very faint and sometimes very audible.
suggest you contact the seller with this issue, they should be able to fix it...
if you ask me, the first question you should ask any seller of tube gears is after sales service,
tubes are never bullet-proof, requires more maintenance, more than SS amps...
Post by: kayee on Apr 25, 2015 at 08:25 PM
Post by: tony on Apr 26, 2015 at 07:21 AM
sir tony medyo naayos ko na yung issue sa grounding ng volume and hum, may konting hum na lang not like before na malakas...... ^-^......
good to know, sabi ko sayo, kaya mo yan....:D
Post by: tony on May 02, 2015 at 07:25 AM
he is building an el84 class a pp amp...
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpa1/v/t35.0-12/11182845_937292316292403_1519546387_o.jpg?oh=a73310b8faeb11f352ef7be40130d5cc&oe=5549D307&__gda__=1430896167_6e75438cfac7a14e997866603ebfef1a)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpf1/v/t35.0-12/11070286_937292319625736_434817536_o.jpg?oh=57ec0db702642c443e0b6927dab4d693&oe=5549B216&__gda__=1430911755_2d3d3b5ad8ed6328c3c9f8463e0f4387)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpt1/v/t35.0-12/11181904_937292249625743_1677854946_o.jpg?oh=0d08b8e28929810edb061c4e6b350e58&oe=55497FE7&__gda__=1430901844_743ef2a10d048ee44747da1ecdc6a205)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpa1/v/t35.0-12/11187546_937292182959083_816233570_o.jpg?oh=1b0fc0e825d85735ac45600747b7d23b&oe=5548C6B3&__gda__=1430831340_62884b64dce68b19bb092cb9896f9658)
Post by: rochie on May 02, 2015 at 09:29 AM
mga magkano aabutin ng kit na yan?
Post by: tony on May 02, 2015 at 10:48 AM
Sir tony,
mga magkano aabutin ng kit na yan?
mura lang.......around 10k....pero wala akong finished traffos ngayon...
Post by: tony on May 02, 2015 at 10:49 AM
Sir tony,
mga magkano aabutin ng kit na yan?
mura lang.......
around 10k does not include tubes, tubes you can buy on your own...
....pero wala akong finished traffos ngayon...
the design is a good way for newbies to start on tubes...
like always, i inject my own ideas to the amp....
Post by: rochie on May 02, 2015 at 10:49 AM
mura lang.......around 10k....pero wala akong finished traffos ngayon...uy pwede na pag-ipunan sir.
Post by: tony on May 02, 2015 at 11:07 AM
true pentode din ito kagaya ng el84....mas mataas pa ng kaunti ang plate dissipation...
meron sa Pacific electronics, 400 pesos each, meron akong isang pares..
you can also use the 6LU8 to build this amp, you only need 4 tubes,
the 21LU8 is avaioable at deeco raon...it is a 12 pin compactron,
the 13LR8 is a nine pin novar and is electrical identical...
Post by: CoolTOYZPH on May 02, 2015 at 02:05 PM
no....................
so happened that for the two units of 2A3 amps i did for Larry,
both of them had the Shuguangs biased exactly alike, something i never imagined
possible until i tried it.....i hit the tube's sweet spot without really trying...
i designed the psu with that goal in mind and i nailed it...
now what i am saying is, i can not say the same for other brand tubes,
since the same tube type from different manufacturers are made differently
using different materials and manufacturing tolerances, and so biases differently..
so i can only comment on the Shuguangs since i have used them...
btw, triodes are very easy to figure out....
of course no one can stop you if you want to roll tubes... http://www.pinoydvd.com/index.php/topic,200076.msg2264636/topicseen.html#quickreply (http://www.pinoydvd.com/index.php/topic,200076.msg2264636/topicseen.html#quickreply)
Post by: tony on May 02, 2015 at 04:12 PM
Master Tony, on DIY set-ups like this, what is the Tube brand to be used for the trafos to hit the sweet spot?
sweet spots are more aptly applied to direct heated, single ended amps...like the 2A3. 300b. etc...
push-pull amps cancels most of the second harmonics, that is why they sound differently...
sweet spot in this case to me means very low higher order odd harmonics above the 3rd...
the 6bq5 is a very fine true pentode tube, in my experience, the philips el84 sounds best to my ears.....
but the JJ el84 sounds very good too...
i remember an AMX el84 pp amp sold here for 1500, easily the best buy of the decade,
the lucky owner spent another 1500 for repairs and went home with a winner...
for a mere 3000 pesos, many times better than the Sakura AV200...
easily the best sounding AMX amp i heard in a long time...
btw, topology was based on the dynaco st-35, i saw one on sale
for 70k a few years back...
Post by: CoolTOYZPH on May 02, 2015 at 04:59 PM
a) Tube rolling has more effects on Push Pull Amps
b) Tube Rolling has less effect vs Direct Heated tubes.
Thank you for the continuing education to newbies.
sweet spots are more aptly applied to direct heated, single ended amps...like the 2A3. 300b. etc...
push-pull amps cancels most of the second harmonics, that is why they sound differently...
sweet spot in this case to me means very low higher order odd harmonics above the 3rd...
the 6bq5 is a very fine true pentode tube, in my experience, the philips el84 sounds best to my ears.....
but the JJ el84 sounds very good too...
i remember an AMX el84 pp amp sold here for 1500, easily the best buy of the decade,
the lucky owner spent another 1500 for repairs and went home with a winner...
for a mere 3000 pesos, many times better than the Sakura AV200...
easily the best sounding AMX amp i heard in a long time...
btw, topology was based on the dynaco st-35, i saw one on sale
for 70k a few years back...
Post by: tony on May 02, 2015 at 06:45 PM
Please clarify if the statement below means that:
a) Tube rolling has more effects on Push Pull Amps
b) Tube Rolling has less effect vs Direct Heated tubes.
Thank you for the continuing education to newbies.
no.....one can not generalize in general....
there is no single formula for everything for every one...
it all boils down to choice of operating points by the designer..
designers chooses the best quiescent conditions to do the job with the tubes at hand...
myself tries hast to get good operating conditions, parameters to get the sound right to my ears...
but tubes being a mechanical thing with electrical characteristics,
and with specs based on statistics, variations from to tube is a natural thing with them..
having said these, i can only speak for the tube amps i have had experience with,
as i do not even know how your tube amps were biased, what the operating points were..
but not to worry, end users need not concern themselves with what i mentioned,
my posts here are for the techies wanting to build amps with their own hands...
end users need only to concern themselves with what brand of tubes are most
pleasing to their ears, after all that is all what really mattered...
my posts are useful if you are designing and building your own amps,
to the casual user of tube amps and tubes, they should not even bother...
end users need only to concern themselves with just one question,
did i like what i hear? yes or no...
Post by: tony on May 03, 2015 at 08:00 AM
i am now 62 and it is clear to me, i still have a lot to learn....
but my tube journey goes on, up to when? only God knows....;)
Post by: tony on May 04, 2015 at 08:51 AM
since i design tube amps from the ground up..... ;)
i never form any fixed beliefs, i measure with my instruments and listen,
so that if i did not like what i heard, at least i know some reasons why and
make the necessary adjustments to get it to sound like i want it...
if you replaced a tube in your amp and liked it, you will then
conclude that this tube is better than the other tube,
and that is all you will ever know....you will never know
what what was happening inside the circuit to make it so.... ;)
this hobby is all about enjoyment, and our brains decide how..
so that if you convince yourself that china tubes are junk,
chances are you will never enjoy any amp using Chinese tubes..
i have known some who gets orgasmic at the sight of sexy bottle tubes,
so that they go bananas at the sight of those tubes...
some even go to extra efforts to incorporate wood in their amps
all because that is their idea of what a tube amp should look like...
many of the things that a lot of folks like have nothing to do with the sound,
but they do it anyway, why? because that is the way they have convinced their
minds, that is how they will enjoy....who am i to say they are wrong?
in my tube journey i have no fixed beliefs, i take things as they come... ;)
i like to try different things differently.....
and there are only two kinds of tubes for me, a working tube and a dead/defective tube...
Post by: tony on May 05, 2015 at 12:02 PM
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xtp1/v/t1.0-9/p180x540/11200894_940805805941054_5796937959084338143_n.jpg?oh=aee230b496471bf860986caa0025834c&oe=55D0A1D4&__gda__=1439383875_5dc83dc843babadd22d7a7b0fbf08869)
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/p180x540/11203078_940805872607714_4746501704536620533_n.jpg?oh=7f064de5e2d8ae99acd38846afcc975b&oe=55D9B271&__gda__=1439054349_d29b2b405abd5573f50e46b9a97ae429)
Post by: cyberdraven on May 08, 2015 at 08:10 AM
I had an integrated amp which uses 6bq5 output and 12ax7 tubes. My understanding of integrates is that it has a preamp and amp section. Why is it so that the 12ax7 is regarded as phase inverters? Is PI similar to preamp?
Some suggested to add a preamp to improve gain in the system. If i add a preamp, is there a guide what to choose? The integrates uses 12ax7, so if i use a dedicated preamp that uses 12ax7 din balewala din because im using the same preamp and will yield same gain?
Lastly, i read in your post in tube rolling that you could switch a 12ax7 to 12at7. The difference is that 12ax7 will have higher gain. I dont know if this is just me or on my tube selection pero i swear i find the EH 12at7 sounded cleaner and louder than my matsu and siemens 12ax7.
PS: please be gentle..., im still virgin. Hehehe
Post by: tony on May 08, 2015 at 08:42 AM
these are called integrated amps....and there are not much real differences between
them and a tube power amp that i can tell... no one can stop you from using a preamp...
i prefer to use them for the simple reason that i have lots of those...;)
about the phase inverters, half of the tube, one section of the 12ax7 tube is used as the input
or voltage amplifier or a preamp, then the other section is used as "concertina" phase inverter.
yes, you can try to sub the 12at7 in place of the 12ax7 tubes, do not mind that they have different gains,
a 12ax7 tube while having a mu of 100 can have voltage gains of about 50 or less in an actual circuit, iow,
gains of 100 is never achieved...use whatever you find to your liking..
Sir tony, sorry for this dumb questions but i need to understand these fundamentals as i dig deeper in tubes.
I had an integrated amp which uses 6bq5 output and 12ax7 tubes. My understanding of integrates is that it has a preamp and amp section. Why is it so that the 12ax7 is regarded as phase inverters? Is PI similar to preamp?
Some suggested to add a preamp to improve gain in the system. If i add a preamp, is there a guide what to choose? The integrates uses 12ax7, so if i use a dedicated preamp that uses 12ax7 din balewala din because im using the same preamp and will yield same gain?
Lastly, i read in your post in tube rolling that you could switch a 12ax7 to 12at7. The difference is that 12ax7 will have higher gain. I dont know if this is just me or on my tube selection pero i swear i find the EH 12at7 sounded cleaner and louder than my matsu and siemens 12ax7.
PS: please be gentle..., im still virgin. Hehehe
Post by: cyberdraven on May 08, 2015 at 08:51 AM
Post by: tony on May 08, 2015 at 08:54 AM
Got it sir. So if i get a dedicated preamp, my integrates will function as a power amp. Can i just full the volume of the amp and control the volume through the preamp.
i know someone, he puts any preamp he wants to evaluate in series with his set-up,
then if his setup changed for the worse then the preamp is not good,
but if the system improved, then his system was lacking to begin with...
a good preampwillnotchange anything on an already good set-up,
this is how he knows what a good preamp is.... ;)
Post by: xbase on May 09, 2015 at 03:43 PM
i know someone, he puts any preamp he wants to evaluate in series with his set-up,
then if his setup changed for the worse then the preamp is not good,
but if the system improved, then his system was lacking to begin with...
a good preampwillnotchange anything on an already good set-up,
this is how he knows what a good preamp is.... ;)
oo nga, pag maganda na setup tapos nilagyan buffer/preamp tapos nadagdagan ang ganda, ibig sabihin maganda un preamp. tatlong/preamp buffer na na try ko di pa rin gumaganda ung setup ko...out of luck, now i'm trying to look for a simple design buffer/preamp to match my system, baka may ma suggest ka master tony...?
Post by: tony on May 09, 2015 at 05:17 PM
sometimes we covet things not because we need it, but because we do not have it..
kaya nga kadalasan sa marketplace din ang bagsak, binenta na....
Post by: xbase on May 09, 2015 at 05:53 PM
^^^do you even need one?
sometimes we covet things not because we need it, but because we do not have it..
kaya nga kadalasan sa marketplace din ang bagsak, binenta na....
kaya audition muna ako until i find the "right" one, looks like nasa "want" ako kesa "need"... at parang gusto ko na ring mag diy ng simple design lang....
Post by: tony on May 10, 2015 at 08:08 AM
that is why i am loaning out my gears so that those with an itch and a want can
try them out without spending a lot, except time...:D
Post by: zonks on May 10, 2015 at 09:10 AM
Post by: tony on May 10, 2015 at 09:18 AM
panu usapan sa loan ng gears sir?
first we have to meet face to face.....:D
then we listen for the tubes in a while, then you decide if you want to do more tasting....
Post by: tony on May 28, 2015 at 12:24 PM
this is my final hack for the Sakura AV200...get rid of the tubes, we don't need them anymore.......
so don't be afraid if your tubes died out on you, the amp can still run...
program source is my midi player Bread was on deck...
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/11295827_951039364917698_6691501434513810781_n.jpg?oh=96bc3663b6f808b912406e1b8d5e5269&oe=5603552D&__gda__=1443258098_fb976b99d68835b3652efd6b1f34d7e7)
panasonic 2,2ufd polypropylene cap inserted at pins 2 and 3 on the 6n2 socket...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/19016_951039384917696_8644334408321524965_n.jpg?oh=ae1658ff59a15ac197d22496d313fb13&oe=55F63391)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/1509805_951039391584362_5970556342249960916_n.jpg?oh=2ae559b06251b7eb372be53b2428f013&oe=55C3CB34)
first tried out a 10ufd cap but leads are not enough long to fit into tube socket
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/10431453_951039348251033_2508539421007173091_n.jpg?
oh=9cbfa87cce4cca24f4276d277b4c3b43&oe=55FED4BE)
a tube ss rectifer can be used also to get rid of the 5z4///
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-9/11205615_951039351584366_1244270325051442766_n.jpg?oh=0f81dc482b519cc22d03135f37d85884&oe=55C36E8C&__gda__=1438615632_7c494f00240f0de94f81f02b75376157)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xat1/t31.0-8/q87/s960x960/11336804_951039344917700_457412360999482760_o.jpg)
Tube Exorcism completed....
Post by: cyberdraven on May 28, 2015 at 12:40 PM
Post by: tony on May 28, 2015 at 12:48 PM
Sir, Ive been wanting to ask this questio with regards to sakura. Someone told me that the sakura will play even without the tubes nor any load in the tube sockets.
not without doing something inside the amp...;)
and that is what i have demonstrated...
Post by: tony on May 29, 2015 at 08:30 AM
we are the audio techies having a mini EB testing power amps as per FTC: watts rms, 1khz, 8ohms dummy load....
Norman Santos is one OFW working in Dubai, who spends his spare time laying out boards,
he is one of the many OFW's spending their time in a very productive way....
you will be delighted to find out that our local techies are now designing ang making their own smps psu's...
the Pinoy talent are all over the earth....
our Pinoy engineers in China produces many consumer electronics products,
i wll not be surprised if your DAC which came from china has the hand of a Pinoy techie
at one point or another...
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xta1/v/t1.0-9/11141351_1821687848057127_4380251600424566519_n.jpg?oh=27d9004ad25e51d6be38289f79e57921&oe=55F0A844&__gda__=1439003833_d4ad2ff596d7a6ad3f44198624e628f0)
left to right, Larry Roxas, Wewe Padilla, Tony Tecson, Jun Mabanta, Kiko Jimenez, Norman Santos, Jun del Mundo
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/11329947_950594151628886_6233895793621544311_n.jpg?oh=e633ab143d50babdcce332b4440e5d90&oe=55C33599&__gda__=1442752070_68cddb1d4ce2ce9e410824a97d59e0a1)
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/11209384_950593858295582_7846774581348929914_n.jpg?oh=1ad67d66def4fbb3779d644ecc7bccd5&oe=560D8BBC&__gda__=1443131235_10e0cdaf6e71bcf14b1a6d70785e1fee)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfa1/v/t1.0-9/10409233_950593898295578_3786547770512805579_n.jpg?oh=4025c63034281dd3913b3d12bb649882&oe=55BF9172)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfa1/v/t1.0-9/11148770_950593891628912_6786284691459940432_n.jpg?oh=5eec2cf155951c4a098fc12ce793beb3&oe=55C45EE5)
(https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-9/11150738_950594018295566_3578996730765284192_n.jpg?oh=1ef25688260e9479cda17eec3e51c424&oe=55BF7DB7&__gda__=1443167083_75171cd3cea94ff19d956256ed34d989)
really feels good to be among peers..... ;) 8)
Post by: geriboy on Jun 02, 2015 at 10:54 AM
Post by: tony on Jun 02, 2015 at 11:25 AM
Post by: geriboy on Jun 02, 2015 at 11:39 AM
Post by: tony on Jun 02, 2015 at 12:33 PM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/11393097_904488139593030_7212882750015460506_n.jpg?oh=c45cb4ec875b4a4fa3ecb12a36bcd7f7&oe=560A0C2B)
Post by: geriboy on Jun 02, 2015 at 12:35 PM
this is a classA 6bq5/el84 tube amp by a guy called Brgy Tanod from cebu....
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/11393097_904488139593030_7212882750015460506_n.jpg?oh=c45cb4ec875b4a4fa3ecb12a36bcd7f7&oe=560A0C2B)
Post by: tony on Jun 02, 2015 at 12:47 PM
2A3's, 250 volt plate and 60 mA cathodes(total for the two tubes)...
a slight tweaking will still need to be done...
i am gettng the filaments to run at least 4 volts...
it is true what they say about this tube being parallel friendly...
and while i used dc to power the filament, i suspect that just like
the 2A3, these tubes can run on AC filaments at 2 volts and still be hum free... 8)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtf1/v/t1.0-9/p180x540/10313382_953167118038256_4933577498956797110_n.jpg?oh=98f6ba73f70303ac5e7f08c8b0d0468f&oe=560AD414)
Post by: tony on Jun 02, 2015 at 12:49 PM
Eto na po ba yung kinalabasan ng kits na pinadala mo sa Cebu? - http://www.pinoydvd.com/index.php/topic,184568.msg2264683.html#msg2264683
yes doc, the guy is a techie and makes his own ss amps,
he asked me for help since he wanted to get a feel of what
his lolo had while he was growing up....
another happy tubero on his way to tube wonderland.....:D
Post by: camoteque on Jun 02, 2015 at 12:51 PM
at last tumunog na, 4P1L parallel SET, design goal was to run the tubes as if they were
2A3's, 250 volt plate and 60 mA cathodes....a slight tweaking will still need to be done...
i am gettng the filaments to run at least 4 volts...
it is true what they say about this tube being parallel friendly...
and while i used dc to power the filament, i suspect that just like
the 2A3, these tubes can run on AC filaments at 2 volts and still be hum free... 8)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtf1/v/t1.0-9/p180x540/10313382_953167118038256_4933577498956797110_n.jpg?oh=98f6ba73f70303ac5e7f08c8b0d0468f&oe=560AD414)
Nice. Why not try running the filament at AC? Di ba pwede parang bypass switch lang? What are the other tube complements?
Post by: tony on Jun 02, 2015 at 12:57 PM
Nice. Why not try running the filament at AC? Di ba pwede parang bypass switch lang? What are the other tube complements?
we can, but we need to change the power traffo....;)
tube complements are all Russian, 6j9(e180f/6688) input pentode wired as a triode, 6n1p broskie cathode followers...
Post by: tony on Jun 20, 2015 at 07:28 PM
work in progress, about to complete...
tube compliments, 6H8c cathode followers,
6BH11 input and phase splitters, 6922 input buffer...
filament and psu caps only testing, raw B+ at 570 volts...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/p180x540/17688_963772806977687_8941607436274622103_n.jpg?oh=eb02599288694ff9414924d284a0e8b0&oe=56218CBF)
power draw with just the filaments and psu only...
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xtf1/v/t1.0-9/q90/p180x540/11402977_963772723644362_287631363423660278_n.jpg?oh=5ccf7ab9059df5cc87c182ad40dc544b&oe=55E6F919&__gda__=1444916839_ea5bd50b41a2b21de4a56e231e262157)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/p180x540/11059917_963772793644355_5664789666226758661_n.jpg?oh=22091619d747ecf7f60d4829c5607e93&oe=56325EAD)
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/q87/p180x540/11536138_963772716977696_2042711423519963128_n.jpg?oh=5b1dfcd050b85c6a7cb8b26536a11b42&oe=5633F084&__gda__=1442308579_2a15294cc35c022fc91fd430c4892dd6)
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xfa1/v/t1.0-9/p180x540/11169953_963772803644354_7729163599926957075_n.jpg?oh=eb8951a554a57cf8fee70cfdfec5dc49&oe=562B34D8&__gda__=1441785866_458695b7c74cbec221ea168fd6cb1d22)
Post by: remington on Jun 21, 2015 at 11:42 AM
Post by: tony on Jun 21, 2015 at 01:10 PM
WOW another flavor!!! Happy fathers day master!
thanks, you too have a good one,,,,,
Post by: tetablanco on Jun 28, 2015 at 07:22 PM
at last tumunog na, 4P1L parallel SET, design goal was to run the tubes as if they were
2A3's, 250 volt plate and 60 mA cathodes(total for the two tubes)...
a slight tweaking will still need to be done...
i am gettng the filaments to run at least 4 volts...
it is true what they say about this tube being parallel friendly...
and while i used dc to power the filament, i suspect that just like
the 2A3, these tubes can run on AC filaments at 2 volts and still be hum free... 8)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtf1/v/t1.0-9/p180x540/10313382_953167118038256_4933577498956797110_n.jpg?oh=98f6ba73f70303ac5e7f08c8b0d0468f&oe=560AD414)
It was so good to finally meet you in person, Sir Tony! Thanks for accommodating my request to buy the tube preamp / phono stage featured above. When paired together with my new PSVANE 2a3B tubes for the SET tube amp you built, my Master Tony setup is now perfect and has never sounded better. Thanks! :)
Post by: zonks on Jun 28, 2015 at 08:29 PM
first we have to meet face to face.....:D
then we listen for the tubes in a while, then you decide if you want to do more tasting....
mukhang iayus ko time management ko nito, nasa akin yung vintage na victor speaker ni mtcc. gusto i try sa tube.
Post by: tony on Jun 29, 2015 at 06:37 AM
It was so good to finally meet you in person, Sir Tony! Thanks for accommodating my request to buy the tube preamp / phono stage featured above. When paired together with my new PSVANE 2a3B tubes for the SET tube amp you built, my Master Tony setup is now perfect and has never sounded better. Thanks! :)
the pleasure is mine sir.....now you have two controls to play around with.....
Post by: tony on Jun 29, 2015 at 06:56 AM
mukhang iayus ko time management ko nito, nasa akin yung vintage na victor speaker ni mtcc. gusto i try sa tube.
yes, if you can bring those speakers to the house we can try them...
or you can pm me you location and i may be able to point you a member near you using my amp...
please pm me model number of your speakers.....thanks...
Post by: tony on Jun 29, 2015 at 07:03 AM
Eto na po ba yung kinalabasan ng kits na pinadala mo sa Cebu? - http://www.pinoydvd.com/index.php/topic,184568.msg2264683.html#msg2264683
yes doc....the guy up until then was building only solid state amps, he did it right the first time...
Post by: camoteque on Jun 29, 2015 at 12:36 PM
at last tumunog na, 4P1L parallel SET, design goal was to run the tubes as if they were
2A3's, 250 volt plate and 60 mA cathodes(total for the two tubes)...
a slight tweaking will still need to be done...
i am gettng the filaments to run at least 4 volts...
it is true what they say about this tube being parallel friendly...
and while i used dc to power the filament, i suspect that just like
the 2A3, these tubes can run on AC filaments at 2 volts and still be hum free... 8)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtf1/v/t1.0-9/p180x540/10313382_953167118038256_4933577498956797110_n.jpg?oh=98f6ba73f70303ac5e7f08c8b0d0468f&oe=560AD414)
Maganda Tony. I have 2 more 2A3 SE amps and this 4p1L amp is in the same league if not better. Very transparent sounding. The amp is currently connected to my midhorns taking care of 600hz to 4.5khz duties.
Post by: tony on Jun 29, 2015 at 12:56 PM
Maganda Tony. I have 2 more 2A3 SE amps and this 4p1L amp is in the same league if not better. Very transparent sounding. The amp is currently connected to my midhorns taking care of 600hz to 4.5khz duties.
Larry, good to know and considering the cost of tubes, panalo.....
a guy from the states was asking me for schematics, gave him one...
he will surely like it as well...
on a general note, when any amp is asked to reproduce in a limited range of frequencies,
that is when its life is easiest....
Post by: tetablanco on Jun 29, 2015 at 01:17 PM
the pleasure is mine sir.....now you have two controls to play around with.....
What tubes are on the preamp? My tube education continues unabated. :)
Post by: tony on Jun 29, 2015 at 01:23 PM
What tubes are on the preamp? My tube education continues unabated. :)
12SN7 and 80ST tube rectifier....sorry about the big pics...
(http://i.ebayimg.com/00/s/MTIxMVgxNjAw/$T2eC16NHJGoE9nuQeR6!BQp,usCpB!~~60_35.JPG)
(http://tctubes.com/images/products/detail/43_80_RECTIFIER_TUBE_800.JPG)
Post by: tetablanco on Jun 29, 2015 at 03:40 PM
12SN7 and 80ST tube rectifier....sorry about the big pics...
(http://i.ebayimg.com/00/s/MTIxMVgxNjAw/$T2eC16NHJGoE9nuQeR6!BQp,usCpB!~~60_35.JPG)
(http://tctubes.com/images/products/detail/43_80_RECTIFIER_TUBE_800.JPG)
Thanks! :)
Post by: tony on Jun 29, 2015 at 07:48 PM
Thanks! :)
thanks also, got it na...;)
Post by: dana on Jun 30, 2015 at 09:21 AM
Tuesday, May 23 mini eyeball with kabalen's at Angeles City, Pampangga....
we are the audio techies having a mini EB testing power amps as per FTC: watts rms, 1khz, 8ohms dummy load....
Norman Santos is one OFW working in Dubai, who spends his spare time laying out boards,
he is one of the many OFW's spending their time in a very productive way....
you will be delighted to find out that our local techies are now designing ang making their own smps psu's...
the Pinoy talent are all over the earth....
our Pinoy engineers in China produces many consumer electronics products,
i wll not be surprised if your DAC which came from china has the hand of a Pinoy techie
at one point or another...
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xta1/v/t1.0-9/11141351_1821687848057127_4380251600424566519_n.jpg?oh=27d9004ad25e51d6be38289f79e57921&oe=55F0A844&__gda__=1439003833_d4ad2ff596d7a6ad3f44198624e628f0)
left to right, Larry Roxas, Wewe Padilla, Tony Tecson, Jun Mabanta, Kiko Jimenez, Norman Santos, Jun del Mundo
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/11329947_950594151628886_6233895793621544311_n.jpg?oh=e633ab143d50babdcce332b4440e5d90&oe=55C33599&__gda__=1442752070_68cddb1d4ce2ce9e410824a97d59e0a1)
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/11209384_950593858295582_7846774581348929914_n.jpg?oh=1ad67d66def4fbb3779d644ecc7bccd5&oe=560D8BBC&__gda__=1443131235_10e0cdaf6e71bcf14b1a6d70785e1fee)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfa1/v/t1.0-9/10409233_950593898295578_3786547770512805579_n.jpg?oh=4025c63034281dd3913b3d12bb649882&oe=55BF9172)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfa1/v/t1.0-9/11148770_950593891628912_6786284691459940432_n.jpg?oh=5eec2cf155951c4a098fc12ce793beb3&oe=55C45EE5)
(https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-9/11150738_950594018295566_3578996730765284192_n.jpg?oh=1ef25688260e9479cda17eec3e51c424&oe=55BF7DB7&__gda__=1443167083_75171cd3cea94ff19d956256ed34d989)
really feels good to be among peers..... ;) 8)
just saw this now.
may reunion palang nangyari jan sa angeles papaT.
complete lab bench testing yata ginawa nyo jan....
ang titikas ng mga audio techies...
thanks papaT.jan pala si tukkar, naka pm ko na sa elab early this wk...have to check my vfets ranking code.
Post by: tony on Jun 30, 2015 at 09:57 AM
just saw this now.
may reunion palang nangyari jan sa angeles papaT.
complete lab bench testing yata ginawa nyo jan....
ang titikas ng mga audio techies...
thanks papaT.jan pala si tukkar, naka pm ko na sa elab early this wk...have to check my vfets ranking code.
Don, maraming pang matitikas na pinoy techies na taga Cebu at Mindanao,
nasa facebook silang lahat....https://www.facebook.com/groups/301399146708263/
https://www.facebook.com/groups/APEETG/ at https://www.facebook.com/groups/1507333286196797/
Si Norman isang OFW na based sa Dubai...yearly ang vacation nya...
si Tukkar, aka Jun Mabanta, ay isang field engineer ng Xerox copiers based in San Fernando...
i am happy i was able to get them together in a mini EB FTC testing power amps...
marami pang ibang OFW's na nakakapag lay-out ng boards, nakaka-design ng amplifiers
at ngayon nga ng mga SMPS power supplies....
malayo na ang narating ng mga pinoy techies natin...
i am proud that in one way or another i am able to give them directions
although these guys pretty know what they are doing already...
kung tutuusin hindi natin kailangan ang China para sa mga amps,
kaya nating magproduce ng pinoy made....
Post by: edrel sison on Jun 30, 2015 at 06:12 PM
Post by: tony on Jun 30, 2015 at 07:18 PM
TV tubes are coming.....
Edrel, that's always a great news...;)
Post by: tony on Jul 02, 2015 at 08:41 PM
got the chassis powder coated.....
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/p180x540/11027465_969640359724265_757135900459728365_n.jpg?oh=f652d9799fbc2cff32be8e54e6c7f1f7&oe=5630528F)
modified the speaker protector delay to >10 secs.....
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xpt1/v/t1.0-9/11701143_969640243057610_6900751434196876302_n.jpg?oh=0473fc7241d1e3346da7e3858a7dea3b&oe=562EFCBA&__gda__=1445124030_a0b9b5cc0ea39c5f35734acf6f3f9227)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xtp1/v/t1.0-9/11230212_969640586390909_8362281350129740573_n.jpg?oh=b4dbca5c7d190df7a2edd50d4cdf237b&oe=56230C70&__gda__=1444707910_885e8c5509b62ac5e6db377f007cff07)
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xft1/v/t1.0-9/11403128_969640619724239_8876009152680384750_n.jpg?oh=c420839758537b7afe4fc4b78f1906b3&oe=562FF79F&__gda__=1445418773_1935065f33f0f4301b31d9122af81828)
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xpt1/v/t1.0-9/11707446_969640693057565_8802285672896083524_n.jpg?oh=848b9c6cb6853e8a042fea66dd320776&oe=562E3654&__gda__=1441210960_ce8d7d5620f6de4d0d0bc31ba7412487)
Post by: tony on Jul 03, 2015 at 12:14 PM
Post by: tony on Jul 05, 2015 at 12:19 PM
using the 4D32 beam tetrodes...
contemplating enhanced triode mode...
tubes came from Gerry Sta Maria for 1500 each...
got another 10 tubes when they were put on sale at Surplus Sales of Nebraska...
winding the power traffo, with about 500VA capacity for an aoutput of about 15 watts per channel
these tube will give the KT150 a run for the money, rated at about the same power,
the 4D32 has a bigger cathode, filaments running 6.3 volts and 3.8 amperes...
http://www.r-type.org/exhib/aai0005.htm
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xft1/v/t1.0-9/s720x720/11700827_970856462935988_4366039646351690865_n.jpg?oh=fe36cb0a1fb98c03b96d131f090a90d3&oe=560EACC1&__gda__=1443778771_b5f791519ba2b755a0d3d0c6f8c00b2b)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpf1/v/t1.0-9/q82/s720x720/11667347_970856459602655_6685659327484738310_n.jpg?oh=71549709acf230166aed748209927909&oe=56306A58&__gda__=1445044558_3a6c90f436e92e8d021a482f97783283)
(http://www.r-type.org/pics/aai0005.jpg)
Post by: edrel sison on Jul 08, 2015 at 02:01 PM
Edrel, that's always a great news...;)unfortunately the weather disturbance continues and so I cannot schedule the meet..
large boxes, tinaas ko na at baka mabasa pa!
Post by: tony on Jul 08, 2015 at 04:16 PM
unfortunately the weather disturbance continues and so I cannot schedule the meet..
large boxes, tinaas ko na at baka mabasa pa!
thanks Edrel, we can do this when the weather improves...
Post by: edrel sison on Jul 08, 2015 at 04:22 PM
Post by: tony on Jul 08, 2015 at 04:29 PM
Tony what can you make of a 12GT5? Got 2 pcs of them. Your stash also got 2. Cheap on ebay. Promising tube or not?
along the lines of the 6AV5, the 9pin socket can be tricky though....
you can keep the other two, i have plenty of power tubes already..
i know what you are thinking...single ended, so i suggest you parallel them
two per side, so that you will have more ooomph to drive speakers...
Post by: tony on Jul 08, 2015 at 04:36 PM
the Chinese seems to have both the magnaoval and the novar under the same class...
i have the 13gb5, pl504's, the 6lq6 etc tubes waiting to see action...
12 pin compactron sockets are no problem....
Post by: edrel sison on Jul 08, 2015 at 04:37 PM
Post by: tony on Jul 09, 2015 at 07:54 AM
re-posting compilation by smoking-amp:
Don, aka smoking-amp, updates his list of power tubes, i have the "audio power tubes" emboldened,
as you can see those tubes would be in the bottom of the hierarchy of tubes based on cathode
capability (transconductance).....
so can you blame me for hoarding tv scanning tubes? 8) :lol:
Quote
smoking-amp update,more complete:
List of knee currents for g2 = 150 V, g1 = 0 V, Vp = 60 to 80 V
<tube> <Watts> <mA knee@150Vg2> <gm> <Mu> <maxDCmA> <registered by> <date>
6LF6 40W 1144mA@150V 15K@125mA Mu3 500mADC Amperex 1968
6KG6/EL509 34W 1135mA@150V 13K@150mA Mu3.2 500mADC Amperex 1965
6MC6 33W 1130mA@150V 14K@125mA Mu4 400mADC RCA (6LX6 clone) 1972
13E1 90W(absmax) 1120mA@150V 35K@500mA Mu4.5 800mADC AEI 1961
6MH6 38.3W 1100mA@150V 14K@125mA Mu4 500mADC GE (up-rated 6LX6,6KD6,26HU5) 1972
6MB6 38W 1085mA@150V 14K@110mA Mu3.5 400mADC Sylvania 1971
6LR6 30W 1085mA@150V 16K@140mA Mu3.5 375mADC Sylvania 1968
6LX6/6KD6/26HU5 33W 1080mA@150V 14K@125mA Mu4 400mADC GE 1969/1965/1969
6LW6 40W 1050mA@150V 12K@125mA Mu3.7 400mADC GE 1971
6KN6 30W 1050mA@150V 16K@100mA Mu4.5 400mADC Sylvania 1965 (later versions are 6KD6)
6LZ6 30W 940mA@150V 11K@140mA Mu3 350mADC RCA 1971
6LB6/A 30W/35W 825mA@150V 13.4K@105mA Mu4 315mADC GE 1967
6JE6C/6JS6C 30W 789mA@150V 10.5K@130mA Mu3 350mADC Sylvania 68/69
6JE6 24W 762mA@150V 9.6K@115mA Mu3 315mADC RCA 1962
6JS6/6HF5 28W 749mA@150V 11.5K@130mA Mu3 315mADC GE 1964/1963
6MJ6 30W 740mA@150V 11K@100mA Mu3.6 350mADC RCA 1973
6LG6 28W 740mA@150V 11.5K@90mA Mu3.6 315mADC GE 1967
6LQ6 30W 715mA@150V 7.5K@95mA Mu3 350mADC RCA 1967
6ME6 30W 700mA@150V 9.6@130mA Mu3.5 350mADC RCA 1971
6DQ5 24W 690mA@150V 10.5K@110mA Mu3.3 315mADC RCA 1957
6JF6/6JG6 17W 660mA@150V 10K@80mA Mu4.1 275mADC RCA 1965/1964
6KM6 20W 630mA@150V 9.5K@80mA Mu4 275mADC RCA 1965
6HD5/6HJ5 24W 630mA@150V 10K@80mA Mu4.2 280mADC Raytheon 1962/1963
6JR6/6JU6 17W 600mA@150V 7K@45mA Mu4.7 275mADC RCA 1968/1966
6JZ6/21HB5A 18W 560mA@150V 9K@46mA Mu4.8 230mADC GE 1966/1964
12HE7 10-15W 540mA@150V 8.8K@60mA Mu4.2 200mADC GE (15W if damper disabled) 1964
6CL5 25W 514mA@150V 6.5K@90mA Mu3 240mADC Sylvania 1955
6GB5/29KQ6/EL500 17W 500mA@150V 13K@100mA Mu5.1 275mADC Amperex 1961/Matsucrapa 1959/Philips 1961?
6KV6/A 20-28W 488/610mA@150V 6K@40mA Mu4 275mADC RCA (re-rated 6KM6?) 1967/1969
6HB5/6GY5/21JV6/6KE6/16KA6 18W 475mA@150V 9.1K@50mA Mu4.7 230mADC GE/GE/GE/Ray/Tung 1962/1962/1965/1965/1964
6EX6 22W 460mA@150V 7.7K@67mA Mu4.2 220mADC Raytheon (up-rated 6CD6) 1959
6CB5/A 23W 440mA@150V 8.8K@90mA Mu3.8 240mADC RCA 1954/1956
6CD6/GA 15/20W 422mA@150V 7.7K@75mA Mu3.9 200mADC RCA/GE 1949/1954
6GT5/6GJ5/6JT6/6JB6/6GW6 17.5W 380mA@150V 7.1K@70mA Mu4.4 175mADC RCA 1961/1961/1964/1962/1961
6GE5 17.5W 350mA@150V 7.3K@65mA Mu4.4 175mADC GE 1961
6GF5 9W 345mA@150V 4.7K@34mA Mu4.2 160mADC GE 1961
6JM6/6JN6/6FW5/6GC6 17.5W 340mA@150V 7.3K@70mA Mu4.4 175mADC GE 1964/1964/1960/1960
6DQ6B/6GV5 17.5W/18W 330mA@150V 7.3K@65mA Mu4.4 175mADC GE 1959/1962
6DQ6/A 18W 280mA@150V 6.6K@55mA Mu4.1 120/155mADC CBS/RCA 1955/1956
6JA5/10JA5 19W 276mA@150V 10.3K@95mA Mu5.5 110mADC GE 1971
6LU8/6LR8//6MY8 14//16W 265mA@150V 9.3K@56mA Mu6.5 75mADC Sylvania 1964/1964//1970(Toshiba)
6AV5/GA///6BQ6/GA 11W 255ma@150V 5.9K@57mA Mu4.3 110mADC CBS/GE 1949/1955 /// CBS/Syl 1949/1953
KT120 60W 221ma@150V 190mADC
KT90 50W 220mA@150V
6Y6G/GT/GA 12.5W 200mA@150V Ray 1937/KenRad 1939/Syl 1954
6550A 35W/42W 190mA@150V 11K@140mA 190mADC
6W6GT 10W 185mA@150V 8K@46mA Mu6.2 65mADC CBS 1939
KT88 35W 170mA@150V 175mADC
6CA7/EL34 25W 107mA@150V 11K@100mA Mu10.5 150mADC Philips 1952
6JC5 19W 80mA@150V 4.1K@43mA Mu7 75mADC Sylvania 1971
6L6/G/GA/GB/GC 30W 77mA@150V 4.7K@40mA Mu8 110mADC RCA 1936/Ray 1936/Syl 1943/Syl 1954/GE 1958
6HB6 10W 70mA@150V 20K@40mA Mu33 60mADC Raytheon 1961
6GK6 13.2W 65mA@150V 11.3K@48mA Mu19 65mADC CBS 1959
6BQ5/EL84 12W 65mA@150V 11.3K@48mA Mu19.5 65mADC Rogers 1956
6V6G/GT 14W 45mA@150V 4.1K@45mA Mu9.8 40mADC KenRad 1936/CBS 1939
Post by: tony on Jul 09, 2015 at 07:59 AM
Post by: tony on Jul 09, 2015 at 11:02 AM
output bias set to about 50mA per collector...
i set the 2k bias pot to 1k and i was at the target current, no further adjustment needed,
whe you maximise to 2k, the output stage is deep in cut-off at power up and power meter
reads12 watts, now my power meter reads 17 watts, meaning the output stage are
now dissipating an additional of 5 watts, things are cool to touch after a few hours...
after two hours meter reads 16 watts for just 1 watt per output trannie,
and the good news is, bias is not increasing....
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xpt1/v/t1.0-9/p180x540/11707818_972535472768087_8938826615823923698_n.jpg?oh=411f774094a55a64c4f4e64c6f31fc07&oe=56168320&__gda__=1444239878_4f63c293bf734d6a6e7a7c8efb26b299)
Post by: rochie on Jul 10, 2015 at 12:13 AM
taking my sweet time...output offset adjustments confirmed working,
output bias set to about 50mA per collector...
i set the 2k bias pot to 1k and i was at the target current, no further adjustment needed,
whe you maximise to 2k, the output stage is deep in cut-off at power up and power meter
reads12 watts, now my power meter reads 17 watts, meaning the output stage are
now dissipating an additional of 5 watts, things are cool to touch after a few hours...
after two hours meter reads 16 watts for just 1 watt per output trannie,
and the good news is, bias is not increasing....
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xpt1/v/t1.0-9/p180x540/11707818_972535472768087_8938826615823923698_n.jpg?oh=411f774094a55a64c4f4e64c6f31fc07&oe=56168320&__gda__=1444239878_4f63c293bf734d6a6e7a7c8efb26b299)
sweeettttttt
Post by: tony on Jul 15, 2015 at 04:36 PM
now undergoing inventory..... ;)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/s720x720/11145061_851220701628623_3618775062906090437_n.jpg?oh=99ed874e0c6cf6bdabf0e2ec1252d644&oe=56127403)
Post by: CoolTOYZPH on Jul 15, 2015 at 05:45 PM
over a thousand tubes, all in individual boxes...
now undergoing inventory..... ;)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/s720x720/11145061_851220701628623_3618775062906090437_n.jpg?oh=99ed874e0c6cf6bdabf0e2ec1252d644&oe=56127403)
Post by: Superman on Jul 15, 2015 at 09:57 PM
Post by: remington on Jul 15, 2015 at 10:42 PM
Post by: tony on Jul 17, 2015 at 09:17 AM
gold mine ni master tony!!!
indeed....i found a solitary 6LW6, the king of TV horizontal tubes, i know where to get them,
i am tryng to convince the store to sell me a sleeve of those tubes...
(http://blogs.c.yimg.jp/res/blog-5a-78/arunas001/folder/1589355/16/51735416/img_3?1299473707)
one such amplifier using the tube...
http://www.tiffe.de/roehren/ga399ma.pdf
above article explains why this tv tube is better than traditional audio beam tetrodes/pentodes...
been thru over 200 power tubes, some of which sells northwards of U$50 n the states today..
the U$1 tubes i purchased years ago are now selling for more than U$4 nowadays...
it seems that as soon as a tv tube is discussed at diyaudio.com, the chinese will gobble
them up in the tens of thousands.... :o >:D
Post by: rochie on Jul 18, 2015 at 07:36 AM
over a thousand tubes, all in individual boxes...wow dami nyan sir tony,sarap makihalukay for a preamp project hehehe
now undergoing inventory..... ;)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/s720x720/11145061_851220701628623_3618775062906090437_n.jpg?oh=99ed874e0c6cf6bdabf0e2ec1252d644&oe=56127403)
Post by: tony on Jul 19, 2015 at 01:42 PM
wow dami nyan sir tony,sarap makihalukay for a preamp project hehehe
i found a pair of 7au7's...these can easily sub for a 6cg7 or 6gu7
without changing anything on the circuit...
found also 6dt8's and 12dt8's, these can be used on circuits using the 12at7...
and many more....like a pair of 8bq5's, a lots of 10bq5's, don't let the filament voltage
turn you off, a power traffo can be made to use 10 or 8 or the regular 6bq5's....
i am having lot's of fun sorting the tubes out....
these lot brings my tube stash to over 3000 pcs...
the 6JH8's can be used to make a one tube stereo line amp, volume control is a single pot....
Post by: rochie on Jul 19, 2015 at 01:51 PM
i found a pair of 7au7's...these can easily sub for a 6cg7 or 6gu7i think i have a spare traffo here the one that i got from you previously,ill check the secondary voltage
without changing anything on the circuit...
found also 6dt8's and 12dt8's, these can be used on circuits using the 12at7...
and many more....like a pair of 8bq5's, a lots of 10bq5's, don't let the filament voltage
turn you off, a power traffo can be made to use 10 or 8 or the regular 6bq5's....
i am having lot's of fun sorting the tubes out....
these lot brings my tube stash to over 3000 pcs...
the 6JH8's can be used to make a one tube stereo line amp, volume control is a single pot....
Post by: tony on Jul 19, 2015 at 02:04 PM
Post by: rochie on Jul 19, 2015 at 05:40 PM
kailan ka mapapasyal? narito sila vhinx at rd_bumagat nung saturday....
baka Aug na sir tony wala na naman ako next weekend eh.,excited na ako madinig yung dny40w :) :) :)
Post by: tony on Jul 22, 2015 at 07:47 AM
baka Aug na sir tony wala na naman ako next weekend eh.,excited na ako madinig yung dny40w :) :) :)
ok, just give me a one day notice.....
Post by: tony on Jul 22, 2015 at 08:32 AM
Post by: edrel sison on Jul 22, 2015 at 12:47 PM
How many of the 10BQ5s you got Tony? I have the OPT for it that can make a very nice PP 10 watter amp..
Post by: tony on Jul 22, 2015 at 01:01 PM
1,841? No more no less? ;D
How many of the 10BQ5s you got Tony? I have the OPT for it that can make a very nice PP 10 watter amp..
hindi pa kabilang dyan ang mga nabasag...about 10....i can give a quad of the 10bq5's no problem...
i am sure you can make a power traffo that can use 10 and 6.3 with a flick of a switch....;)
madaming japanese na equivalent ng 5y3....;)
still going over the tubes, overall, i am very happy with this find...a gold mine indeed...
i found 7au7's that can substitute for a 6cg7....drop in...
Post by: dana on Jul 22, 2015 at 02:56 PM
over a thousand tubes, all in individual boxes...
now undergoing inventory..... ;)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/s720x720/11145061_851220701628623_3618775062906090437_n.jpg?oh=99ed874e0c6cf6bdabf0e2ec1252d644&oe=56127403)
another Yamashi_ta treasure found from Malabon, now in Pasig?
sa isang hoarder/supplier mo lan eto natisod papaT?
wow.
Post by: edrel sison on Jul 22, 2015 at 04:04 PM
dana, it was my find. my uncle knows the former owner of these TV tubes. would you believe took me 2 years to convince the owner to sell..
Post by: dana on Jul 22, 2015 at 05:01 PM
...
dana, it was my find. my uncle knows the former owner of these TV tubes. would you believe took me 2 years to convince the owner to sell..
ayuz.
raid adventure pala ni Indiana Jones Sr & Jr nangyari.
imagine big kids, in a toy store ;D
parang nkwento mo nga sa akinyan dati....
nakaukit na talaga sa mga palad nyo na sa inyo mapunta mga yan, mga rightful heir to that stash...
will keep you busy until 2 lifetimes maybe, hanggang kaya pang mag wind ng trapos, mag butas ng chassis,mag pt-to-pt wiring .kuha na lan ng body builder for the flipping and buhat buhat ;D
Post by: tony on Jul 22, 2015 at 05:30 PM
Dana, you are welcome to partake of the booties is you so desire.......:D
these tubes are all in boxes, not loose tubes..... 8)
latest tube count stands at 3607, while it is not possible for me to use them all up,
i may donate some of them to schools and to young tube hobbyists
who can not afford to buy tubes...after all, it was thru the generousity
of my high school chum that started me in this hobby, this friend gave me
my first soldering iron, lent me transformers to make my first tube amp,
a mono 6em5 pp tube amp.... ;)
Post by: kimmy_kimmy on Jul 22, 2015 at 07:16 PM
Post by: tony on Jul 23, 2015 at 07:10 AM
congrats sirs ton and edrel
thank you....:D
Post by: deist on Jul 23, 2015 at 10:35 AM
over a thousand tubes, all in individual boxes...
now undergoing inventory..... ;)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/s720x720/11145061_851220701628623_3618775062906090437_n.jpg?oh=99ed874e0c6cf6bdabf0e2ec1252d644&oe=56127403)
Post by: tony on Jul 23, 2015 at 11:46 AM
Daming hakot! parang yamacrapa treasure nga ;D congrats! 8)
:D love that auto censor......;)
yes, lots of tube to go around, i have lots of 6JH8's now and will be cobbling up a single tube(or two maybe) stereo line amp soon when schedule permits...http://frank.pocnet.net/sheets/093/6/6JH8.pdf
Post by: tony on Jul 23, 2015 at 06:04 PM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/p180x540/11228107_978706398817661_8032938238154175273_n.jpg?oh=dea526a78e55648a6e4dc2fa22dbb2c4&oe=5653ACE5)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpt1/v/t1.0-9/p180x540/11781606_978826642138970_2759110403379124829_n.jpg?oh=e581591cfd8eb7bf0c1844b718c7f6fb&oe=5644C07A&__gda__=1447954780_d78bd82beafc148ea982b895ae429405)
Post by: luis on Jul 23, 2015 at 07:19 PM
Post by: cyberdraven on Jul 25, 2015 at 07:08 AM
Post by: tony on Jul 25, 2015 at 08:01 AM
Sir tony, is that the solid state amp you were building when we visited?
yes....
Post by: tony on Jul 27, 2015 at 12:51 PM
FYI, the 12EN6 is also like a 6V6.....you have a 6BQ5 amp now, so that you can have a chance to compare...
btw, the 5894 SET is now somewhere in the Commonwealth QC area....
Post by: cyberdraven on Jul 28, 2015 at 07:37 AM
Just let me know sir.
Thanks
Paeng
Post by: oweidah on Jul 31, 2015 at 06:12 AM
maligayang kaarawan, cheers!
Post by: nogo on Jul 31, 2015 at 06:52 AM
Post by: tony on Jul 31, 2015 at 07:09 AM
Great sir. My 6bq6 PP is with my friend already but i have here a SEP/SET el84 amp to play with. Last week, had a chance to audition a fellow pdvd highend system. The tempo is to die for. I feel my system lacks enough power to deliver such agility. I feel a high powered PP would be my best bet.
Just let me know sir.
Thanks
Paeng
you can come this sunday for the pp amp...
Post by: cyberdraven on Jul 31, 2015 at 07:18 AM
you can come this sunday for the pp amp...
Thanks sir! Happy bday!
Post by: tetablanco on Jul 31, 2015 at 11:14 AM
Post by: tony on Jul 31, 2015 at 11:19 AM
Post by: pTrader on Jul 31, 2015 at 11:29 AM
thank you sir....thanks for the birthday greets guys...
birthday pala mo, more blessings sir.. :)
Post by: tony on Jul 31, 2015 at 11:33 AM
Post by: tony on Jul 31, 2015 at 11:38 AM
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/p180x540/11813453_982517825103185_5362517349929237233_n.jpg?oh=e9cf49921f9cf64d03b591e81ee6087a&oe=563CDC6F)
replacement pot...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xta1/v/t1.0-9/11781614_982517828436518_315560315842853278_n.jpg?oh=daacb6403635e9d2d1eae479cc33ae47&oe=5656E545)
pot installed...
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/11817183_982517795103188_721884517566148843_n.jpg?oh=277efe472c140cc2b2406b84689343fd&oe=56493518)
now enjoying the music...
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xat1/v/t1.0-9/11822817_982517781769856_8646259760715103067_n.jpg?oh=04bffcdca4292acb423b7986efc8fb86&oe=56509AAC)
Post by: remington on Jul 31, 2015 at 11:53 AM
Post by: Superman on Jul 31, 2015 at 11:56 AM
Post by: tony on Jul 31, 2015 at 11:58 AM
Post by: kaspog08 on Jul 31, 2015 at 12:26 PM
Post by: tony on Jul 31, 2015 at 12:44 PM
Post by: luis on Jul 31, 2015 at 01:20 PM
Post by: dana on Jul 31, 2015 at 01:23 PM
Post by: tony on Jul 31, 2015 at 06:39 PM
Post by: Abad Santos 7 on Aug 01, 2015 at 10:31 AM
Post by: kimmy_kimmy on Aug 01, 2015 at 10:43 AM
Post by: ndotcom on Aug 01, 2015 at 12:07 PM
Post by: cyberdraven on Aug 02, 2015 at 03:38 PM
(http://i.imgur.com/txxw2mSl.jpg)
(http://i.imgur.com/2iC6QWOl.jpg)
Time to play some music
Post by: Courage on Aug 02, 2015 at 03:52 PM
Now playing. Thanks sir tony!
(http://i.imgur.com/txxw2mSl.jpg)
(http://i.imgur.com/2iC6QWOl.jpg)
Time to play some music
Uyyy nice.. yan ba yung Aurum Cantus speakers na sinasabi mo?
Post by: cyberdraven on Aug 02, 2015 at 03:54 PM
Post by: tony on Aug 02, 2015 at 04:59 PM
Happy birthday sir Tony!
thanks, nasa pinas ka pa?
Post by: tony on Aug 02, 2015 at 05:00 PM
Now playing. Thanks sir tony!
(http://i.imgur.com/txxw2mSl.jpg)
(http://i.imgur.com/2iC6QWOl.jpg)
Time to play some music
you are welcome.......enjoy......;)
Post by: ndotcom on Aug 02, 2015 at 05:11 PM
thanks, nasa pinas ka pa?
ala pa sir, sayang nga dapat nagbaon ako ng mga gagawin dito, masarap mag tubes at maghinang dito kasi malamig ;D para may pampainit
Post by: CoolTOYZPH on Aug 02, 2015 at 05:16 PM
Now playing. Thanks sir tony!
(http://i.imgur.com/txxw2mSl.jpg)
(http://i.imgur.com/2iC6QWOl.jpg)
Time to play some music
Post by: tony on Aug 02, 2015 at 05:20 PM
ala pa sir, sayang nga dapat nagbaon ako ng mga gagawin dito, masarap mag tubes at maghinang dito kasi malamig ;D para may pampainit
that is good to know, keep that soldering ron hot...;)
jindi mo nadala yung kit mo ng aikido?
Post by: tony on Aug 02, 2015 at 05:21 PM
Is that an AMX Pre-amp on the right?
AMX 6bq5 set amp with tone control, Paeng can use the preamp section if he wishes.....
Post by: tony on Aug 04, 2015 at 07:14 PM
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xtf1/v/t1.0-9/s720x720/11816816_859977890752904_1766719586959449704_n.jpg?oh=8f3092e9fe45249630fa402c98bd3ff0&oe=56481A05&__gda__=1448794923_89f7bf25513092c670872639968038e4)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/s720x720/11825549_859977907419569_193361600266096860_n.jpg?oh=b0037b50c5f274e6fda1939099421b85&oe=56446D3D)
Post by: CoolTOYZPH on Aug 04, 2015 at 07:21 PM
I wounder if it sounds like an Almarro 318B http://www.6moons.com/audioreviews/almarro5/318.html
newly built 832 push-pull, for testing soon....
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xtf1/v/t1.0-9/s720x720/11816816_859977890752904_1766719586959449704_n.jpg?oh=8f3092e9fe45249630fa402c98bd3ff0&oe=56481A05&__gda__=1448794923_89f7bf25513092c670872639968038e4)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/s720x720/11825549_859977907419569_193361600266096860_n.jpg?oh=b0037b50c5f274e6fda1939099421b85&oe=56446D3D)
Post by: Superman on Aug 04, 2015 at 07:32 PM
Post by: tony on Aug 04, 2015 at 07:37 PM
Very nice. Congratulations!
I wounder if it sounds like an Almarro 318B http://www.6moons.com/audioreviews/almarro5/318.html
the Almarro is a single ended 6C33 triode amp....the 832 is a push-pull amp....;)
it may look like a SET but it is not....
this is the 6C33 SET i did.....http://www.diyaudio.com/forums/tubes-valves/216206-my-russian-set.html
Post by: remington on Aug 04, 2015 at 07:38 PM
Post by: Superman on Aug 04, 2015 at 07:41 PM
the Almarro is a single ended 6C33 triode amp....the 832 is a pushpull amp....')
Definitely with more juice...
Post by: tony on Aug 04, 2015 at 07:44 PM
wow nice!!! padinig master ^-^
sure thing...;)
but remember, i never do the same amp exactly the same,
all my amps are unique.... ;)
Post by: tony on Aug 04, 2015 at 07:45 PM
Definitely with more juice...
indeed it has more juice....15 watts pc.....
Post by: Superman on Aug 04, 2015 at 08:27 PM
Post by: dana on Aug 05, 2015 at 08:49 AM
how about Dremel inscribing your signature and date of build on those masterpieces...
Post by: tony on Aug 05, 2015 at 11:01 AM
as always, awesome build and great work Senor Meister PapaT !
how about Dremel inscribing your signature and date of build on those masterpieces...
thanks Don, have been thinking about that for the longest time...
i have asked my son to design ma a logo....;)
Post by: tony on Aug 05, 2015 at 01:03 PM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtf1/v/t1.0-9/11846785_984633764891591_7931146467063681877_n.jpg?oh=15057f6734807c4acd064bb83cfe7baa&oe=56560BF8)
Post by: edrel sison on Aug 05, 2015 at 01:48 PM
Post by: tony on Aug 05, 2015 at 04:40 PM
Who is the owner Tony?
me.....;D
Post by: edrel sison on Aug 05, 2015 at 06:22 PM
Post by: tony on Aug 05, 2015 at 07:08 PM
Hihiramin ko yan pag natapos..
sure, ikaw pa.....;)
Post by: pTrader on Aug 06, 2015 at 12:19 PM
Post by: tony on Aug 06, 2015 at 12:20 PM
ano ibeg sabehin ng push-pull?
https://en.wikipedia.org/wiki/Push%E2%80%93pull_output
https://www.youtube.com/watch?v=JRjVjjo3raE
eto naman ang single ended....
https://en.wikipedia.org/wiki/Single-ended_triode
if you want to hear the difference between the two, come to the house and i will treat you to both... ;)
btw, both the Dared and the AV200 are examples of push-pul amps...
Post by: pTrader on Aug 06, 2015 at 12:38 PM
https://en.wikipedia.org/wiki/Push%E2%80%93pull_output
https://www.youtube.com/watch?v=JRjVjjo3raE
eto naman ang single ended....
https://en.wikipedia.org/wiki/Single-ended_triode
if you want to hear the difference between the two, come to the house and i will treat you to both... ;)
btw, both the Dared and the AV200 are examples of push-pul amps...
paano po ako makakapunta sa inyo? kapalan ko na mukha ko, marami na rin beses kitang inabala sa forum dito..
salamat sir, paki PM na lang po...
Post by: tony on Aug 06, 2015 at 12:39 PM
paano po ako makakapunta sa inyo? kapalan ko na mukha ko, marami na rin beses kitang inabala sa forum dito..
salamat sir, paki PM na lang po...
ok lang, nasa hiraman pa yung mga unts ko....
pag me nabuo ako na bago, or nakauwi yung mga amps, pm kita...
Post by: tetablanco on Aug 06, 2015 at 06:00 PM
ok lang, nasa hiraman pa yung mga unts ko....
pag me nabuo ako na bago, or nakauwi yung mga amps, pm kita...
I really liked your 5994 SET amp. Was that a PP amp? :)
Post by: tony on Aug 06, 2015 at 06:04 PM
I really liked your 5994 SET amp. Was that a PP amp? :)
no sir, it is a single ended, triode wired amp...
in fact, all my single ended amps are straight away triode wired...
i have listened to ultraliear and pentode wired single ended amps but did not like it...
so it is triode for me all the way....
triodes are very desireable in SET amp, and any pentode tube wired as a triode is a triode,
triodes are such voltage sources with very low plate resistances makes them very suitable in a SET...
triodes have negative feedback already built in....no need for global negative feedback...
Post by: tony on Aug 07, 2015 at 07:34 AM
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/p180x540/11800011_985426224812345_1910997934656830900_n.jpg?oh=7ad748b37f854234d242bea64dd374aa&oe=5655B1BA)
Post by: tony on Aug 07, 2015 at 02:37 PM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/11822380_985519978136303_5896879360563501938_n.jpg?oh=37194e5f7b474a3191bbc20be45d0c93&oe=564A1B8A)
Post by: CoolTOYZPH on Aug 07, 2015 at 02:48 PM
Stromberg-Carlson, what makes this small amp sound so fabulous? small OPT's, no boutique caps, and yet bass is tight and fast, cymbals shimmering,,,,;)
Post by: tony on Aug 07, 2015 at 02:55 PM
Post by: pTrader on Aug 07, 2015 at 04:37 PM
Post by: tony on Aug 07, 2015 at 05:03 PM
yung bang tube equalizer pwede bang i-custom at lagyan ng amplifier?
pwede kung sa pwede pero kung ako hindi ako napatol sa ganyan....
kuha ka na lang ng gumagana nang amplifiers at pag kabitin mo sila...
Post by: tony on Aug 18, 2015 at 08:23 PM
chassis powder coated flat black, FB412....
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/s720x720/11898692_990062117682089_499372095851234540_n.jpg?oh=9385edce580448ae0596fdf2d3cef8f5&oe=567E40E5&__gda__=1450709655_8aa676146a0788809824e070a81f4810)
primary circuit wirng copmpleted, soft start functions okey...rails idle at +-50 volts...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/11880658_990499557638345_7005020739744954947_n.jpg?oh=aa3e86ac8d0532141db5aaecc551938d&oe=5680823A)
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-9/11040630_990499560971678_1373744315183866223_n.jpg?oh=bdd8ad727a7aa2c11a8d55af4c6ccc2e&oe=563834BB&__gda__=1450871655_d7b05c38c11bdec4608ba764975e2128)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/11903781_990499597638341_4393428455316917673_n.jpg?oh=ee58680094553f6eceea7cd6bd0ba4b5&oe=563906F2)
Post by: tony on Aug 24, 2015 at 07:43 PM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/11898681_993308040690830_2435973880137986564_n.jpg?oh=e529efa3108c8020eaa33161a0f5a00a&oe=5684165D)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/11933382_993307977357503_3383559519901859952_n.jpg?oh=0e676873406da130b8284cd361f9fb0f&oe=567B5AA4&__gda__=1449699117_467c879f59035480e89459ba593df102)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xlf1/v/t1.0-9/11952039_993307984024169_5909448431796960454_n.jpg?oh=2ea64cb7ecbcd0fa6597454dbaa9c8e2&oe=567B93C1)
Post by: tony on Aug 27, 2015 at 12:20 PM
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xta1/v/t1.0-9/11218902_994645887223712_6796192438354549227_n.jpg?oh=0b35368d876b2598b0a4abda0acff6ee&oe=566C3D0A&__gda__=1450824323_4a9f8f32642d53ae73501d2a8e791053)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtp1/v/t1.0-9/11889508_994645837223717_6372309041233242507_n.jpg?oh=1a3e25a09abfb382c3b24d30eeadb54c&oe=567C35A6)
Post by: tony on Aug 27, 2015 at 12:38 PM
they are Japanese pier units and therefore run on 100 volt mains.....
as i am perennially afraid of Murphy, i decided to convert them to 230volt mains instead...
both the LV-103 and the LV105 use the 6CG7 tube long tail pair as VAS to drive the
lateral mosfet output stage. a separate small power traffo is used to light up the filaments.....
since the 6CG7, (a 9pin analogue of the 6SN7), likes better to run on higher plate voltages,
i have decided to replace them with 6dj8 type tube, but this is another story altogether... :D
main power traffos removed:
an angle grinder was used to remove the welds on the side of the power traffos to separate the E's from the I's...
prior to grinding these 2 traffos were completely immersed in a tub full of lacquer thinner for 2 weeks.....
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_2899_zps0f873bf3.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_2899_zps0f873bf3.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_2914_zps0f37af21.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_2914_zps0f37af21.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_2902_zpse6770d73.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_2902_zpse6770d73.jpg.html)
with the coil assembly yanked out of the core, the bobbins were pried open to separate the primary and secondary chambers.....these traffos have completely separate primary and secondary chambers so that only the primary coils is changed...the secondary coil assembly is left untouched...
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_2913_zpse5ade10c.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_2913_zpse5ade10c.jpg.html)
so the primary coil is put on my winder to count the number of turns which turned out to be 220 turns of #19 magnet wire, therefore at 230 volts this becomes 506 turns of #23 wire...
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_2922_zps2ad5dfb3.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_2922_zps2ad5dfb3.jpg.html)
then comes the windup for the 230volt primary...
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3236_zpsed17c007.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3236_zpsed17c007.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3237_zpsa7ea6fa5.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3237_zpsa7ea6fa5.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3238_zpse06ffe44.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3238_zpse06ffe44.jpg.html)
once done, installing the E and I's comes next....since i do not have access to tig welding, i decided to do the traditional interleaving, but first the weleded edge must be grinded to make it easy to separate the laminations...
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3241_zps74de9a68.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3241_zps74de9a68.jpg.html)
the E's completed...
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3243_zpsf56d5f0d.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3243_zpsf56d5f0d.jpg.html)
inserting the I's...
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3244_zps9b5faa88.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3244_zps9b5faa88.jpg.html)
finally inserting the copper banding, mu-metal wrapping and mounting brackets installed completing the job..
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3243_zpsf56d5f0d.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3243_zpsf56d5f0d.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3245_zps8f8109ef.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3245_zps8f8109ef.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3247_zpsa261e2b0.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3247_zpsa261e2b0.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3248_zpse09edb2f.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3248_zpse09edb2f.jpg.html)
completed traffo is immersed into a tub of clear air drying polyurethane electrical varnish..
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3250_zps55ce8eb5.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3250_zps55ce8eb5.jpg.html)
completed traffos ready for action...
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3262_zpscc818fa0.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3262_zpscc818fa0.jpg.html)
````````2nd
there is a 2nd smaller traffo and is used to power the tube filaments...
it is likewise converted to 230 volts..
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3240_zps4fbb33ac.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3240_zps4fbb33ac.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3263_zps32613126.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3263_zps32613126.jpg.html)
primary turns are counted on the winder...
there were 1008 turns of #30 wire counted, to convert to 230vac,
i wind 2600 turns of #35 for primary coil..
secondary windings have two coils of 170 turns each of #25 magnet wire..
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3266_zpsb2f18f5f.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3266_zpsb2f18f5f.jpg.html)
winding new primary coil...
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3267_zps83f139f4.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3267_zps83f139f4.jpg.html)
reinserting the E-I's..
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3268_zps00547919.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3268_zps00547919.jpg.html)
finally putting back the endbells and brackets...
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3270_zps219c4a7e.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3270_zps219c4a7e.jpg.html)
completed traffo...
(http://i5.photobucket.com/albums/y155/leoman53/LV-105/IMG_3271_zps51e05f1a.jpg) (http://s5.photobucket.com/user/leoman53/media/LV-105/IMG_3271_zps51e05f1a.jpg.html)
Post by: dana on Aug 28, 2015 at 12:05 PM
btw, whats your plan with the power amp section of that luxman, restore/replace ?
Post by: tony on Aug 28, 2015 at 12:32 PM
ayus papaT...
btw, whats your plan with the power amp section of that luxman, restore/replace ?
restore, i sacrificed the LV-103 to get the tone control section of the LV105 fixed...
the 6CG7 is replaced by the japanese 6RHH8, better suited to work at lower voltages
being a member of the 6dj8 family....
tone control board about to install..
(https://fbcdn-photos-f-a.akamaihd.net/hphotos-ak-xpf1/v/t1.0-0/p180x540/11231092_995189633836004_647624216128235303_n.jpg?oh=6d57aeeaf5fdc0fc301a34ab70845b64&oe=568108E9&__gda__=1449478254_7090b8d97a80a164ff5216b4ef2e021b)
japanese 6RHH8 tubes in place ot the 6CG7...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/11960040_995190000502634_1041650549265064678_n.jpg?oh=1dd2a6d5d62a24901fc0975c2484e8d5&oe=5667B179)
Post by: remington on Aug 28, 2015 at 01:19 PM
Post by: dana on Aug 28, 2015 at 03:05 PM
nice to hear that papaT. O0
Post by: tony on Aug 28, 2015 at 03:53 PM
nice master parinig pag natapos ^-^
of course....
Post by: tony on Aug 28, 2015 at 03:55 PM
"restore", dat's more lyk it...
nice to hear that papaT. O0
on back burner pa, hindi ko alam kung kailan matatapos, haba ng pila...;)
Post by: tony on Sep 01, 2015 at 07:37 PM
yet sending me early Christmas gifts,
tubes are from Ilagan Isabela, ESD mat and OPA445 and
Vishay power resistors from two guys in Cebu...
tubes are National USSR 6L6GC, JAN Sylvana 8L6Gwb, JAN Tung-sol 6SL7
the green thinghy is an ESD matt...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpl1/v/t1.0-9/11952003_997078460313788_1033260701393995728_n.jpg?oh=3c94634cdc4f6386c54f9fd48d6ae35f&oe=565ECE50)
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xta1/v/t1.0-9/11220864_997078450313789_8477118348982960075_n.jpg?oh=01e62273c416f390a16be90c3e62143d&oe=566CFA04&__gda__=1448980365_514022ad1fc36b335f27eee4b6ff2858)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpl1/v/t1.0-9/11951777_997079033647064_6755392722379525247_n.jpg?oh=b774f1b54e609416d32f489fef8ccd66&oe=56792331)
Post by: tony on Sep 02, 2015 at 07:40 AM
OPT's...
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/11947694_997309250290709_332441120380578377_n.jpg?oh=b432d1d874238eab583d4fafedac445d&oe=5672CD7F&__gda__=1451450852_6d962baaebe8cd371e5da628d126e70b)
filament only shows 48 watts draw...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/11036380_997309190290715_5822357232975649623_n.jpg?
oh=84755e2e09b3ebbf33e05d31e6d12ed8&oe=5673B556)
partial underside...
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xft1/v/t1.0-9/11947656_997309213624046_3920065198048390920_n.jpg?oh=b910fede56fd92dea1ec7356df20d670&oe=56751413&__gda__=1450301593_6a868c0964386df524cb6ae1105fa08a)
preliminary schematic...
(https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xtp1/v/t1.0-9/11921713_997309333624034_988183566671886149_n.jpg?oh=864a33e9072f23fc6d6c04d38c6d5e8d&oe=567FEF26&__gda__=1450890195_15b273c98b68a54981ceae89d2052390)
Post by: remington on Sep 02, 2015 at 04:37 PM
Post by: tony on Sep 03, 2015 at 05:56 PM
pwede ba ma home audition pag natapos master ;D
of course.....;)
Post by: tony on Sep 08, 2015 at 07:19 AM
instrumentation cable rated for 300 volts from Gerry Morales.....https://www.facebook.com/gerry.morales.52
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/11953179_999861076702193_6076721099363068865_n.jpg?oh=8b637b3762f2ac7183f41ae243125fc1&oe=5663B611)
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/12002866_999861073368860_3003814817920028379_n.jpg?oh=ca18c21ed360de5699f7df381f3309b3&oe=565F499F)
Post by: rochie on Sep 08, 2015 at 10:16 AM
freshly diy'ed speaker cables, gage #12 screened
instrumentation cable rated for 300 volts from Gerry Morales.....https://www.facebook.com/gerry.morales.52
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/11953179_999861076702193_6076721099363068865_n.jpg?oh=8b637b3762f2ac7183f41ae243125fc1&oe=5663B611)
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/12002866_999861073368860_3003814817920028379_n.jpg?oh=ca18c21ed360de5699f7df381f3309b3&oe=565F499F)
ganyan din gamit kong speaker cable now, kay Gerry ko din kinuha pero si Jun ang naghatid sa akin. murang mura at sulit hindi naman namamagnet hehehehehe. meron pa ako extra for 1 pair.
Post by: tony on Sep 08, 2015 at 10:58 AM
i bought 8 meters, hinatid ni Gerry mismo sa house...
these cables are not cheap is you get them from the manufacturer....
and the wire thickness is nothing like any you can find in raon....;)
Post by: rochie on Sep 08, 2015 at 11:31 AM
at 60 pesos per meter, how can anyone complain?
i bought 8 meters, hinatid ni Gerry mismo sa house...
these cables are not cheap is you get them from the manufacturer....
and the wire thickness is nothing like any you can find in raon....;)
oo kapal ng stranded wires sa loob, I also like the shield,sinubukan kong iparallel sa power cable ko, no interference at all compare doon sa isang gamit kong speaker wire na pag nakaparallel sa power cable ramdam agad yung pagbabago sa SQ.
anong klase pala yung plating niyan doon sa conductor? i guess hindi silver yun.
Post by: tony on Sep 08, 2015 at 03:49 PM
the shield is also used to make an extension of your chassis,
as you can connect the shield to the metal part of your chassis,
in my case, decided to just leave them alone....
i am lazy to measure capacitance and inductance with this one,
perhaps the next cables will have a chassis earthing lead....
Post by: tony on Sep 09, 2015 at 08:49 AM
this "tube from Hell" is even cheaper than the 4P1L.....
i think i have half a dozen of these $1 tubes from my recent tube acquisition...
time to re-core the other pair of traffos you gave me...
Quote from: smoking-amp;4445711
I think everyone is PM'd so far.
Here are the triode curves for the tube from Hell:
Pic1:
10 mA/ div Vert.
50 V/div Horiz.
1 V grid steps
You can throw out those 300B's now.
the scope pic shows a very linear tube...
(http://www.diyaudio.com/forums/attachments/tubes-valves/503079d1441758375-6ge5-triode-rsz_triode_hell.jpg)
Post by: tetablanco on Sep 10, 2015 at 08:02 AM
from another forum.....ping camotecue, would you like to try this one? ;)
this "tube from Hell" is even cheaper than the 4P1L.....
i think i have half a dozen of these $1 tubes from my recent tube acquisition...
time to re-core the other pair of traffos you gave me...
the scope pic shows a very linear tube...
(http://www.diyaudio.com/forums/attachments/tubes-valves/503079d1441758375-6ge5-triode-rsz_triode_hell.jpg)
Hi Sir Tony,
Is there any way for me to further mod my 2A3C amp or preamp? I'm very satisfied with your babies but it's part of human nature to always try to attain perfection. Thanks!
Post by: tony on Sep 10, 2015 at 11:02 AM
Hi Sir Tony,
Is there any way for me to further mod my 2A3C amp or preamp? I'm very satisfied with your babies but it's part of human nature to always try to attain perfection. Thanks!
gold plated sockets, new tubes, these you can do...
Post by: geriboy on Sep 10, 2015 at 11:05 AM
Post by: tony on Sep 10, 2015 at 11:15 AM
Sir Tony, ano po yung "tube from hell" na binanggit ninyo sa last post ninyo? Hindi kasi naglo-load yung pic? Thanks
galing dito yan......http://www.diyaudio.com/forums/tubes-valves/278043-6ge5-triode.html
mababasa kasi ng mga chekwa kaya by pm ang pasahan ng info, baka me pumakyaw na naman....;)
low power lang ito, parang 6bq5, so we are looking into possibility of paralleling for more muscle....
i have several of these tubes on hand.....will post here updates....
Post by: camoteque on Sep 10, 2015 at 11:45 AM
Tinabi ko nga muna 2a3 ko kasi mahal ang tubo. Kungbaga sa basketball, reserve muna siya. Nag iba na starters ko. Ha ha.
Post by: tony on Sep 10, 2015 at 12:03 PM
Wag kang maingay Tony! :) :) :)
Tinabi ko nga muna 2a3 ko kasi mahal ang tubo. Kungbaga sa basketball, reserve muna siya. Nag iba na starters ko. Ha ha.
sinab mo eh.....ipon muna ng tube types na yon...
Post by: kayee on Sep 10, 2015 at 04:03 PM
Post by: tony on Sep 10, 2015 at 04:14 PM
sir tony yan yung vinyl savor ni thomas mayer....6cb5a, 6ge5....$4 na rin yung price ng tubo tumaas na rin.... :)
hindi nabanggit ng hayagan, by pm lang, pwede ko ibulong sa iyo, gusto mo..? ;)
kaya nga ayaw sabihin sa forum, baka tumaas ang price....meron ako nyan....pero gusto kong bumili ng mga 20pcs pa....
Post by: kayee on Sep 10, 2015 at 04:25 PM
Post by: tony on Sep 10, 2015 at 04:41 PM
:) sorry sir tony....dapat pala di ko nailagay yung presyo baka nga masilip ng chekwa....6bc5a yung type ko but not now muna bossing nagaaral pa ako mag wind ng trapo's....try ko muna mag buo ng power trapo's.... :)
madali lang yan...si John nakagawa na....
hindi yung tinukoy mong tubes, $1 pa rin siya....our secret is safe...
Post by: tony on Sep 10, 2015 at 05:35 PM
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/12003374_1000637246624576_4516273763811292266_n.jpg?oh=54b0a14a0b8eafb49dfa3b39fa6b5482&oe=565E0D54)
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xat1/v/t1.0-9/12002159_1000637259957908_8968319315564802157_n.jpg?oh=1f7c9646409b025db3e944ebe5cb88b8&oe=56A54B7C)
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xtp1/v/t1.0-9/12004107_1000637323291235_540978645358811284_n.jpg?oh=1968bdec959cf4c26a034f4bdcf6bef4&oe=56624F06)
Post by: kayee on Sep 10, 2015 at 06:13 PM
Post by: tony on Sep 11, 2015 at 01:05 PM
ganda sir tony.....push pull 6lu8.....oo nga si john nakita ko yung post niya nakabuo na siya ng sariling trafos..try ko muna sa mga nakahoy ko na trafos dito sa office UPS.... :) :) if di mag failed man di sayang yung transformer. :) basa basa muna sa elab sir.
post ka rin doon ng masilip ng iba yung mga amps mo.....http://www.elab.ph/forum/index.php?topic=34991.2350
malapit na naman ang winter sa russia, nakakamiss.... :-\
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xfa1/v/t1.0-9/31864_124979894190320_2128971_n.jpg?oh=b1a8091a09f9c383bf9961f38fd34ddb&oe=5666B745&__gda__=1449755710_2b8be89c6507e0c46177056a7268a540)
Post by: kayee on Sep 11, 2015 at 03:17 PM
Post by: dana on Sep 11, 2015 at 03:40 PM
pedeng isali sa "ALONE" series.
Post by: tony on Sep 11, 2015 at 03:49 PM
sir di ka na babalik ng Russia? pag na transfer ko na ng plint sir yung 6lu8 and el84 ko disassembled pa sa ngayon inilipat ko sa natural wood plint nakahingi ako ng narra wood sa FAT :) malikot kc yung kamay ko di mapakali kaya kalas na naman sa aluminum enclosure....
pasilip na lang pag nabuo mo ulit...
Post by: tony on Sep 11, 2015 at 03:50 PM
tikasin naten jan papaT ah.
pedeng isali sa "ALONE" series.
mga 10 am ang kuha na yan, medyo busog pa....;)
eto rin namimiss ko..... >:D yung long hair.... >:D
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-prn2/v/t1.0-9/534011_413105772038840_1251305968_n.jpg?oh=6b754c08ef1d9f8eaf93d330af14f8a2&oe=565F7521)
my interpreter....very efficient.....
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/s720x720/1382865_641566429198328_361164490_n.jpg?oh=5ed4520d95cd36ee2d4eeea128de3dd9&oe=56A02BE6)
all Pinoy QC/QA team...
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-ash2/v/t1.0-9/p180x540/1002919_641566075865030_445668972_n.jpg?oh=ac04ca140a8bb7da87ab050d807c7e05&oe=56779838&__gda__=1450687394_304c37de17f95cdb03f44e76e79eb10d)
Post by: CoolTOYZPH on Sep 11, 2015 at 04:02 PM
If a 6sn7 tube is cable to handle both left and right audio channels in the pre-amp stage, why do designers of tube gears use one tube each for the left and the right channels?
Really a question of curiosity. Thank You.
Post by: tony on Sep 11, 2015 at 04:14 PM
Sir Tony, a question which I hope you can shed information.
If a 6sn7 tube is cable to handle both left and right audio channels in the pre-amp stage, why do designers of tube gears use one tube each for the left and the right channels?
Really a question of curiosity. Thank You.
you can by choice use just one 6SN7 tube for both channels, that is doable...
the 6J5 is like a 6sn7 with just one plate in a bottle...
reason that most designs use two sections is that the first section is used
as gain stage in a common cathode circuit, gain of about x10,
while the second section is used as a cathode follower, gain of about x0.9...
the cathode follower has low output impedance that it can drive interconnects very easily....
the 6sn7, the 6cg7 and the 12au7 are siblings and suitable for line stage since its mu,
or amplification factor is not that high...the 6dj8 otoh can operate at lower voltages....
more detailed explanation by John Broskie...http://www.tubecad.com/2009/03/blog0161.htm
Post by: CoolTOYZPH on Sep 11, 2015 at 05:23 PM
Now I learned why two(2) tubes are used for gain stage.
Post by: tony on Sep 11, 2015 at 06:25 PM
Thank you for the reply. I asked because it is very irritating when the the left and the right tube are not matched/or not evenly rated. The singer tends to veer on the more powerful tube. It is when I wondered why not just make the pre-amp stage one tube so that it will always be even.
Now I learned why two(2) tubes are used for gain stage.
no two tubes are exactly alike in characteristics,
that is why i do not subscribe to the notion of "matched tubes".....
afaik, no such thing with tubes, get 100 samples and you will be lucky to find a pair...
even the two sections of a tube will never match 100% they can come close but never 100%
luckily there are circuit techniques that can mitigate these effects...
so if someone sells me a matched pair, i run away.....;)
Post by: tony on Sep 14, 2015 at 03:59 PM
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/11998977_1003098516378449_857236128118026465_n.jpg?oh=e1bec9854f6252d6a9098a22b31a9e24&oe=56A94ED2&__gda__=1449067277_72aea482a29f6e5603a06ad2d7022e21)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xat1/v/t1.0-9/10430449_1003098523045115_1655357204862098917_n.jpg?oh=45bd3d3beca529f235832d4f18589564&oe=566FE9A7)
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xtp1/v/t1.0-9/11223330_1003098526378448_4643542321561055334_n.jpg?oh=23a34ca15b91b53df8b0e7e171889fab&oe=566BEE88&__gda__=1449856942_fa2a36604f43b42eee75e6343c26fcb5)
Post by: rochie on Sep 14, 2015 at 04:14 PM
yung fuse holder ko na ganyan ang bilis mabiyak hehehehe, yung gamit ko sa 5670 tube preamp ko kala ko tuloy sira dahil ayaw mag power on, yun pala yung fuse holder biyak na yung doon banda sa lock nya kaya wala na contact sa loob hehehehe. kaya pinalitan ko nung screw type na lang.
btw yung VSPS hindi mo na nilagyan ng voltage regulator para sa +/- ? or sa ilalim mo imomount?
Post by: tony on Sep 14, 2015 at 04:45 PM
very low current yung unit, a few watts of power so i do not expect failure,....
wala akong stock ng regulators, bibile pa lang...;D
Post by: tony on Sep 14, 2015 at 06:54 PM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xlp1/v/t1.0-9/12002882_1003166256371675_5411143844109643310_n.jpg?oh=f4ca7d14e4be508bf59e35835dbb66bf&oe=56ABE79D)
Post by: rochie on Sep 14, 2015 at 06:56 PM
DNY40W SS amp paired with a tube preamp...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xlp1/v/t1.0-9/12002882_1003166256371675_5411143844109643310_n.jpg?oh=f4ca7d14e4be508bf59e35835dbb66bf&oe=56ABE79D)
nakakaintriga yung mga naka plastic sa likod :D :D :D :D.
Post by: tony on Sep 14, 2015 at 06:59 PM
Post by: remington on Sep 14, 2015 at 07:50 PM
Post by: CoolTOYZPH on Sep 14, 2015 at 08:52 PM
A bit on the expensive side but if he tells me quiet and matched, they come out exactly as described.
no two tubes are exactly alike in characteristics,
that is why i do not subscribe to the notion of "matched tubes".....
afaik, no such thing with tubes, get 100 samples and you will be lucky to find a pair...
even the two sections of a tube will never match 100% they can come close but never 100%
luckily there are circuit techniques that can mitigate these effects...
so if someone sells me a matched pair, i run away.....;)
Post by: tony on Sep 15, 2015 at 06:25 AM
Post by: tony on Sep 22, 2015 at 04:21 PM
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/12036829_1007352009286433_3181593935596307460_n.jpg?oh=5e2bab7b118294e6a614c27f0682f08e&oe=56A271F4&__gda__=1452593660_d83a2f96c32595236efc6fc8979f8200)
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/12049292_1007352022619765_1610581978398879789_n.jpg?oh=2bdc0e2bb5bb6a7dc80cde27c3feeda4&oe=569A5C80)
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/12038313_1007352029286431_406632000736658555_n.jpg?oh=3c3b05f37bb16417995edfb1d243af9b&oe=56608F78)
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-prn2/v/t1.0-9/11215158_1007352069286427_595168868086690892_n.jpg?oh=e250e248014426fc5998194c7ba83b6c&oe=5666633E)
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xtp1/v/t1.0-9/12002949_1007352072619760_3857766048151296995_n.jpg?oh=ab9669668798558d1e12706844fdd46c&oe=566099C1&__gda__=1449077991_dcbd519f9179fabdfad31cdbb6fcd0c9)
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xpt1/t31.0-8/q85/s960x960/12010662_1007352045953096_3339821840020342602_o.jpg)
Post by: tony on Sep 23, 2015 at 05:20 PM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtf1/v/t1.0-9/12039587_884699414947418_1320626162619969581_n.jpg?oh=f1fb6ecef570d245b52f72da66966d43&oe=5663130D)
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xtf1/v/t1.0-9/12006285_884699404947419_8159765128202437745_n.jpg?oh=38db0ddd0f3fd04f3ab73fa67821bc17&oe=5690BCC1&__gda__=1453899930_a015026b52e91ccd37b14e46b5581c54)
Post by: camoteque on Sep 23, 2015 at 05:49 PM
Post by: rochie on Sep 23, 2015 at 06:32 PM
na compare nyo na yung VSPS tsaka yang transistor phono stage?
Post by: tony on Sep 23, 2015 at 06:53 PM
sir Tony,
na compare nyo na yung VSPS tsaka yang transistor phono stage?
hindi kasi ako golden eared kaya tingin ko same din lang...
Post by: tony on Sep 23, 2015 at 06:54 PM
Wow. Ayos yan ha. Takip na lang kulang :)
;)
Post by: tony on Oct 05, 2015 at 05:34 PM
i added a small heatsink, gave it a split psu of +- 30 volts, at normal listening levels,
the rails are +-28, heat is lesser this way....still good after these years....
(https://scontent-nrt1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/12074699_1012794838742150_6328482905209752592_n.jpg?oh=385676307a1e0066bcd3f3110250f7a7&oe=56CFBEA9)
(https://scontent-nrt1-1.xx.fbcdn.net/hphotos-xap1/v/l/t1.0-9/12140600_1012794782075489_8696514992076345726_n.jpg?oh=7f0901dd869e786ed1b9bd1114ca0e23&oe=5694307A)
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xtp1/v/t1.0-9/12144926_1012794832075484_6795481847512256355_n.jpg?oh=5069196030861627bb0b01061ffdf91b&oe=5695C76F&__gda__=1452685129_20c39426819543a3c6b0e1525e5a1f0b)
Post by: tony on Oct 09, 2015 at 08:07 PM
as you can see, caps upsized to 63 volts from 50 volts...
progress updates...
(https://scontent-vie1-1.xx.fbcdn.net/hphotos-xta1/v/t1.0-9/12122616_1014391968582437_6962483889395235799_n.jpg?oh=0dcfbc39cf14a053395d9be5a54ad8f0&oe=569B58A5)
collection of parts, final....the speaker protection board sits atop the psu board...
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xal1/v/t1.0-9/12074968_1014391981915769_7947830858121107773_n.jpg?oh=e9ba383d8b6380e1bb95477311bf4365&oe=569E1206&__gda__=1452713258_59f4b6307395397bb15a54502ecd5f53)
(https://scontent-vie1-1.xx.fbcdn.net/hphotos-xta1/v/t1.0-9/12115503_1014392031915764_4478361081238929513_n.jpg?oh=901bc5428231c49c80323e750fd6d532&oe=56D259F4)
(https://scontent-vie1-1.xx.fbcdn.net/hphotos-xtp1/v/t1.0-9/12118644_1014392045249096_7782709664628240753_n.jpg?oh=d2b744fe7bdc193347d4659428365239&oe=5697A360)
(https://scontent-vie1-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/10622739_1014392088582425_5346479274340345839_n.jpg?oh=82f9229a0fade61d8e5171c3e4205857&oe=569B08C1)
(https://scontent-vie1-1.xx.fbcdn.net/hphotos-xta1/v/t1.0-9/12074959_1014392108582423_5222726052871727023_n.jpg?oh=616035fc05c481c9eed0386ca999652d&oe=56D3117A)
(https://scontent-vie1-1.xx.fbcdn.net/hphotos-xtp1/v/t1.0-9/12119017_1014392145249086_4340113964111875486_n.jpg?oh=ed075ebffb3f5d4fa3d81edd7eb36abc&oe=569029F9)
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/12088360_1014392165249084_53576212470166241_n.jpg?oh=d0d732a501cd46785b9ab39ccadd7560&oe=56CEC992&__gda__=1456445030_f5b5b8b2b458ee4c0103c4bb84a5fe9f)
(https://scontent-vie1-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/12107277_1014391708582463_2709720974224061666_n.jpg?oh=ca666cf65cb56356c0ed32df0bb7985e&oe=56888311)
Post by: tony on Oct 13, 2015 at 03:13 PM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/12079072_1016124215075879_2084594369231222298_n.jpg?oh=c6c9f0bc0edfd3eb39e23544159be189&oe=5697771A)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xlp1/v/t1.0-9/12105756_1016124225075878_9006980843484988745_n.jpg?oh=049d20219b10a0cc461eac2612cb87ab&oe=5688CE2F)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtp1/v/t1.0-9/12115727_1016124228409211_6193508899870229506_n.jpg?oh=1a5621ee01faa6ebb01f54a520c85640&oe=56CFB25D)
Post by: remington on Oct 13, 2015 at 04:55 PM
Post by: tony on Oct 13, 2015 at 05:59 PM
mukhang maganda yang bagong putahe master a!!! :o kelan pwede madinig? Para saan yung kingever ??? ;D
galing dito si Larry kanina...napakinggan na nya yung unang 40 watter ko...
yung kingever para sa MD player ko...
Post by: rochie on Oct 13, 2015 at 06:10 PM
mukhang maganda yang bagong putahe master a!!! :o kelan pwede madinig? Para saan yung kingever ??? ;D
pagawa ka murang mura lang yan :D :D :D transformer at casing lang mahal diyan heheheh
Post by: tony on Oct 13, 2015 at 06:15 PM
pagawa ka murang mura lang yan :D :D :D transformer at casing lang mahal diyan heheheh
ilan pa nga pala ang kits mo?
Post by: rochie on Oct 13, 2015 at 06:16 PM
ilan pa nga pala ang kits mo?
madami pa sir tony,meron bagong dating na mga components para sa bare pcb pero standard build na lang wala na yung mga parts para sa current mirror at mga jumpers.
Post by: remington on Oct 13, 2015 at 06:35 PM
galing dito si Larry kanina...napakinggan na nya yung unang 40 watter ko...a ok para sa MD player pala hehehe! master pwede ba ma home audi yang 40 watter na yan?
yung kingever para sa MD player ko...
Post by: tony on Oct 15, 2015 at 10:54 AM
a ok para sa MD player pala hehehe! master pwede ba ma home audi yang 40 watter na yan?
later perhaps i am still enjoying it......
saka me parating na mga gustong marinig....
will advise later....;)
Post by: camoteque on Oct 15, 2015 at 11:16 AM
sir Tony,
na compare nyo na yung VSPS tsaka yang transistor phono stage?
I was able to compare the two SS phonostages "in my system" and I prefer the transistor phono with lower gain. In Tony's system, I preferred the VSPS because of the higher gain. In my system, the VSPS to my ears is analytical while the other one is musical. Bagay siguro sa may speakers na mataba tumunog ang VSPS. Best to audition both phonostages in your system. Bang for the buck phonostages especially sa mga nag-i-start pa lang sa vinyl.
Post by: remington on Oct 15, 2015 at 12:08 PM
later perhaps i am still enjoying it......copy master :) TIA ^-^
saka me parating na mga gustong marinig....
will advise later....;)
Post by: tony on Oct 29, 2015 at 07:34 AM
sent to Bell Metals for electroplating brght zinc.
then to Uni-Pacific powder coating shop for painting...
a 2.5mm aluminum L-type sub-chassis will hold all the heavy components...
so this casing will form an outer shell....
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/12193314_1022289527792681_1057722624900813911_n.jpg?oh=f753cb1f4ae4ddec442faf9b2bb32b28&oe=56BB476A)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/12189015_1022289544459346_242648518762987892_n.jpg?oh=f52e7d1eb1429094d16b397e642fe793&oe=56C32342)
tops and sidings will be colored matte black(?)....powder coated of course...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xat1/v/t1.0-9/12196026_1022559424432358_6748111382402267887_n.jpg?oh=748061579dbca1e648c0b7b0a0ec2204&oe=56859502)
with lfting handles to be installed....
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xft1/v/t1.0-9/12193342_1022559164432384_2733837060683862686_n.jpg?oh=f756108f021b71ce64b0c64325593287&oe=56B9CD8D&__gda__=1456239852_091efd01170fe6cb2f5abbfe41b019c9)
Post by: rochie on Oct 30, 2015 at 10:33 AM
nabigyan mo ako sir tony ng idea diyan. I still have a lian li and micro ATX casing all aluminum lying around in the attic. might as well use them for my diy amp projects, I don't have any plans for now to assemble new desktop pc as I already have a laptop provided by the company.
Ilang watts pala balak nyong gawin doon sa last dny40w kit na kinuha nyo? 100watts ba?
Post by: tony on Oct 30, 2015 at 11:21 AM
Post by: tony on Oct 30, 2015 at 12:20 PM
computation sheet:
(https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/q82/p720x720/12065944_1023028104385490_2819642488014462578_n.jpg?oh=24c083d26510e70806f9800f9cd974d0&oe=56BAB354&__gda__=1456000196_53850668d170de3179000e2c22655cf6)
winding primary:
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/s720x720/12143332_1023028697718764_7860907105030863698_n.jpg?oh=853523af08e9113a2bc2ba5671b84f63&oe=56C49DC8)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/s720x720/12143332_1023028697718764_7860907105030863698_n.jpg?oh=853523af08e9113a2bc2ba5671b84f63&oe=56C49DC8)
the primary coil had some space left over, so i decided to make use of the space
for an electrostatic shield, pigtails connect to one end of the #32 wire,
one of the pigtails will be in touch with the cores at build up and another to chassis ground...
do not ask me how many turns, i did not even bother to count, just filled up space as far
as we can go....
(https://fbcdn-photos-d-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-0/p180x540/12189106_1023066261048341_3357395119388177123_n.jpg?oh=60c6b56018a4989246fb93bacc51da96&oe=56CFD370&__gda__=1455360929_aa819637ceda3675ce3206a748015691)
finished and taped up.....filamentary tapes are available at national bookstore...
(https://fbcdn-photos-b-a.akamaihd.net/hphotos-ak-xpt1/v/t1.0-0/p180x540/12112404_1023067231048244_6239614194880961536_n.jpg?oh=996bdf13bd2e2f62019e21a4fdcc9672&oe=56BED2F6&__gda__=1451635450_a02a7e3d2495329d60bab4dd3de227b6)
Post by: rochie on Oct 30, 2015 at 12:34 PM
one of the higher wattage types, at least 250watts per channel....
cool, separate output board?
Post by: tony on Oct 30, 2015 at 12:35 PM
cool, separate output board?
most likely....;)
Post by: rochie on Oct 30, 2015 at 12:41 PM
most likely....;)
ayos, abangan ulit. I have some 5200 and 1943 coming in from Dandy in the next few weeks.
Post by: tony on Nov 02, 2015 at 06:26 PM
(https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xaf1/v/t1.0-9/12063737_1024469030908064_6253505098093812227_n.jpg?oh=bb9855b9e29d3f312cace4fec0f54fde&oe=56BD2475&__gda__=1454238658_8c13c3feedb31d3010225ab6344d5753)
partial assembly, power supply and speaker protection, installed and tested, confirmed working...
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xpt1/v/t1.0-9/12189756_1024469017574732_2481791177574578555_n.jpg?oh=3a30b72d9f75b3756bcbfc8b57f106a7&oe=56BD944B&__gda__=1454297035_aaa7c1026a0667502b463e6c33596ed7)
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/12189699_1024469010908066_7758761956536535090_n.jpg?oh=ab470cc3b2281160281a6a62f8fe0ae6&oe=56CD0B11&__gda__=1456572283_9b40ac9519262a3929e60794ad2efbc6)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/12189795_1024469087574725_9016667592714690914_n.jpg?oh=d4274401840aebe2358acc2ad0a83c60&oe=56BFD6B9)
Post by: tony on Nov 04, 2015 at 11:47 AM
set-up: VSPS phono head to 6RHH2 aikido, output to 7n7/6h8c aikido,
then two dvd players to this aidkido, then finally to the DNY40W power amp....
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-9/12208841_901781929905833_2588020011221810284_n.jpg?oh=e0d7112affd5b5c6f76bd09cff2e72ae&oe=56C68089&__gda__=1459204181_467ef140dbf165b2f10e85f67d9c7fa3)
(https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-9/12190015_901781933239166_8266640044771984216_n.jpg?oh=acc553da5754aa8a9cc034f85b6e249a&oe=56ACE43F&__gda__=1454670051_be9c967914e12ad5ff9a97dd98383d59)
VSPS phono trivia....i loaned this unit to an audiophile along with rc4558, lm4652, opa2134, ne5532 chips....guess what, he liked the ne5532 the best....;)
Post by: ndotcom on Nov 04, 2015 at 01:38 PM
Post by: tony on Nov 04, 2015 at 04:16 PM
sir Tony yun bang nasa akin na PCB yang VSPS? Nakatabi pa yun sa mga gamit ko naiwan dyan. Need ko ngayon dito kasi phono stage eh baka pede pa PM ng diagram baka pede ko point to point wiring gamit vero board PCB...
yes, Norman.....eto ang links sa vsps...http://phonoclone.com/diy-pho5.html
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xlf1/v/t1.0-9/11224770_885800011504025_7959282270525523679_n.jpg?oh=75d1701d4660eb229daf49229d00bf46&oe=56C4530B&__gda__=1454251892_3b729ad3202d62b6c8be6fec33c1b193)
Post by: ndotcom on Nov 05, 2015 at 04:31 AM
Post by: tony on Nov 06, 2015 at 08:33 PM
Thanks sir Tony, simple circuit diagram at minimal parts. Sana available lahat sa isa shop dito, now I miss Raon or Deeco :)
i can assemble a kit for you if you like so you can play with it there....
Post by: zonks on Nov 06, 2015 at 08:49 PM
Post by: tony on Nov 07, 2015 at 07:18 AM
good evening sir, wala pa ba yung ampunin ko?
ready anytime you are....;)
Post by: tony on Nov 10, 2015 at 08:26 PM
before stickers were applied:
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/12235045_1027968073891493_4518027447684348081_n.jpg?oh=6ae4772b7904ffad784d8646f09305a6&oe=56C15593)
after stickers were applied:
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfa1/v/t1.0-9/12196114_1027968053891495_6205631011108975440_n.jpg?oh=87fa762e323515792871bbf7d1512e9d&oe=56F1C787)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xlt1/v/t1.0-9/12196164_1027968043891496_4860204775202360061_n.jpg?oh=17fdefb22301aa4d30132cfba53be96e&oe=56B47A1D)
a pair of SET Opt's got covered also:
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/12227159_1027968127224821_3613664834355933503_n.jpg?oh=01523f8ebfb87d034b2355470ca3cf58&oe=56B54813)
Post by: zonks on Nov 10, 2015 at 08:59 PM
ready anytime you are....;)
uy nice hehe, kapupunta ko lang ke vhinx, sana pala nakadaan na ko
Post by: tony on Nov 11, 2015 at 07:57 AM
uy nice hehe, kapupunta ko lang ke vhinx, sana pala nakadaan na ko
kausap ko lang si vhinx sa phone kahapon ng tanghali...
pwede ka nyang samahan sa house...
Post by: dana on Nov 11, 2015 at 10:19 AM
was at Raon the other day, i found this carbon fiber stickers plain matte black....
before stickers were applied:
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/12235045_1027968073891493_4518027447684348081_n.jpg?oh=6ae4772b7904ffad784d8646f09305a6&oe=56C15593)
after stickers were applied:
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfa1/v/t1.0-9/12196114_1027968053891495_6205631011108975440_n.jpg?oh=87fa762e323515792871bbf7d1512e9d&oe=56F1C787)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xlt1/v/t1.0-9/12196164_1027968043891496_4860204775202360061_n.jpg?oh=17fdefb22301aa4d30132cfba53be96e&oe=56B47A1D)
a pair of SET Opt's got covered also:
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/12227159_1027968127224821_3613664834355933503_n.jpg?oh=01523f8ebfb87d034b2355470ca3cf58&oe=56B54813)
ayus.
yan ba ung sa mga naglipana sa mga motorcycle accessories...
Post by: tony on Nov 11, 2015 at 11:18 AM
ayus.
yan ba ung sa mga naglipana sa mga motorcycle accessories...
yes, gamit sa mga motorcycles at even sa mga kotse...
pwede syang pang high temp. although malamig ang mga traffo ko...;)
Post by: tony on Nov 11, 2015 at 04:35 PM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtf1/v/t1.0-9/12219536_1028283607193273_6739827863146029821_n.jpg?oh=0b3ee5cd82d92afd40d448c5df6b9743&oe=56AF598A)
tested the boards for output offset and set it to 0mV....idle current set to minimum...
series lamp tester used here...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/12107812_1028283637193270_2788273547894538191_n.jpg?oh=5307a49e015427202c8a2ee28abcaa48&oe=56F6333A)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/12243062_1028283647193269_6540211942735566605_n.jpg?oh=b1b9d5035dc6f851ad0e423db6b7f471&oe=56BA8439)
wiring up after confirming boards...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/11693910_1028283687193265_8301435608605336136_n.jpg?oh=de570351b77e3a81af92dc48a004a790&oe=56C4D133)
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xft1/v/t1.0-9/12208546_1028283697193264_5524114554715861826_n.jpg?oh=61d263ac0e13002edb7eb38651150851&oe=56EFAC87&__gda__=1458459878_07b6d6bde19f180962173ff07552749a)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/12226994_1028283700526597_8696602459388584742_n.jpg?oh=5e7ca562a89ce7fec49c6ec836fee87d&oe=56B9395B)
Post by: tony on Nov 13, 2015 at 06:44 AM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/10173532_1028933843794916_5007492645243763831_n.jpg?oh=1348dd251d7addc424c7a4cc65b2ef87&oe=56BB9A7F)
ready for power soak testing...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/12208393_1028687617152872_3939915642944297896_n.jpg?oh=2abb60672cf4f20941149b4015eca6c8&oe=56EFC514)
Post by: rochie on Nov 13, 2015 at 11:16 AM
Danny Eulogio 2nd build redlines....
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/10173532_1028933843794916_5007492645243763831_n.jpg?oh=1348dd251d7addc424c7a4cc65b2ef87&oe=56BB9A7F)
ready for power soak testing...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/12208393_1028687617152872_3939915642944297896_n.jpg?oh=2abb60672cf4f20941149b4015eca6c8&oe=56EFC514)
ilang watts yang 2nd redline build mo sir Tony?mukhang abot na yan ng 100 watts ano?
Post by: tony on Nov 13, 2015 at 01:17 PM
ilang watts yang 2nd redline build mo sir Tony?mukhang abot na yan ng 100 watts ano?
60 to 80 watts, maliit lang kasi ang traffo...
Post by: tony on Nov 18, 2015 at 06:20 AM
a quad of japanese version of the 7189/el84/6bq5: 6R-P15
drop in replacement....pictured on top...
below is 8 and 10 volt versions of the 6BQ5....
i am making a pp amp ala dynaco sca35 with these tubes...
the quad of 8BQ5 i am going to give to Edrel...
so the finished amp will be able to use either a quad of the 6R-P15
or the quad of the 10BQ5's with just a jumper setting change...
also contemplating putting in a russian 6P15P option too...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/12241730_1030671640287803_504787819017758746_n.jpg?oh=15d509dd46953fcd60cb99e2faaf7050&oe=56AD5DCA)
Post by: tony on Nov 18, 2015 at 06:24 AM
a quad of very rare NEC NOS power triodes used in the Luxman MQ-68 30 watter pp amp...
https://www.google.com.ph/search?q=Luxman+MQ-68c&es_sm=93&source=lnms&tbm=isch&sa=X&ved=0CAcQ_AUoAWoVChMIgZCpvoOKyQIVIR2mCh1jngZb&biw=1366&bih=609
2 quads, one quad with 6 volt filaments and the other quad with 50volt filaments...
i am building a pp amp, but with slightly lower power at 20 watts to ensure long tube life,
Shuguang has new production versions of these tubes but costs around 4500 pesos per tube...
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/12234854_1028630083825292_3074957361154670215_n.jpg?oh=6121380f632a7e7d1c247b779e04d1a9&oe=56EE809F&__gda__=1458472343_d7941882b9278df4c36c02af04bf8845)
Post by: tony on Nov 20, 2015 at 07:05 AM
will bias the output to about 50mA each so that the 19watt idle power increases to 39watts.
(https://scontent-dfw1-1.xx.fbcdn.net/hphotos-xta1/v/t1.0-9/12250114_1031723816849252_1655721342934426508_n.jpg?
oh=fc17168042f2ddbff1fd9c260fec5d69&oe=56F44E25)
(https://scontent-dfw1-1.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/12279200_1031723743515926_5690224021078198502_n.jpg?oh=d72edbd842d3a7defe93bf66f7772056&oe=56BA5B5B)
(https://scontent-dfw1-1.xx.fbcdn.net/hphotos-xtp1/v/t1.0-9/12241322_1031723823515918_1631629430395749619_n.jpg?oh=1e03d6155e3df13953cb3ebc1b7ae1db&oe=56B05F20)
(https://scontent-dfw1-1.xx.fbcdn.net/hphotos-xta1/v/t1.0-9/12115449_1031723830182584_6393167972444117492_n.jpg?oh=908b4b87ed55f69ac784dabc63157291&oe=56AF4A3A)
Post by: tony on Nov 20, 2015 at 10:55 AM
i installed the to 0.33 ohm resistors to have dog ears so i can clip test leads easily..
(https://fbcdn-photos-h-a.akamaihd.net/hphotos-ak-xtp1/v/t1.0-0/p180x540/12239623_1031784116843222_6389015217670394004_n.jpg?oh=8df6a5a82d367626e6661305dfe6b69a&oe=56B0CAB6&__gda__=1454589331_3d89d0049d7c68f51760b0cb85ec4521)
readings accross the resistors for 50mA idle current...
(https://fbcdn-photos-f-a.akamaihd.net/hphotos-ak-xpf1/v/t1.0-
0/p180x540/12278755_1031780743510226_4166161999399550472_n.jpg?oh=0259793f3b479eb21b5f38ae24402a7f&oe=56B81058&__gda__=1457739507_b0a3c35441fbff6dc715253b693e744e)
(https://fbcdn-photos-a-a.akamaihd.net/hphotos-ak-xaf1/v/t1.0-0/p180x540/12227651_1031780913510209_4561122752727323175_n.jpg?oh=d880ae3738dcdfef5e6ad3259d280dc5&oe=56AC6284&__gda__=1454410376_a1e2ac999a86e707f6509d876984bb23)
final reading of 29 watts from an initial reading of 19 watts..
so that the output stage now dissipates 10 watts..
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/12243330_1031786086843025_8841256513011020141_n.jpg?oh=2bda74acdb80e7a7ba1b2daf664393cb&oe=56EA2246)
a look inside with the lid on...
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/12249922_1031781013510199_6510350023602553243_n.jpg?oh=03481f36c4b424f337e3cf0668bf6377&oe=56E65BF6&__gda__=1458490022_fcc59c303f58305b49079221fa7f8331)
Post by: tony on Nov 21, 2015 at 11:21 AM
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xat1/v/t1.0-9/12278917_1032231813465119_1766014578513014150_n.jpg?oh=d8c3a867a7dbe5690b55efc34dae7d75&oe=56F5E33C&__gda__=1458386484_db70c38d53bc5db83d26aa74e093b41f)
Post by: remington on Nov 21, 2015 at 11:45 AM
Post by: tony on Nov 21, 2015 at 12:35 PM
btw, i have 3 other ss amps in the works....;D
Post by: dana on Nov 21, 2015 at 12:41 PM
mga xmas toys ba yan for noche buena and new yr? :)
Post by: tony on Nov 21, 2015 at 12:46 PM
baka mahabol ko pa this december yung 4D32 na single ended, enhanced triode mode...
para doon yung mga trafos na binalutan ng itim....:D
Post by: tony on Nov 21, 2015 at 02:38 PM
papaT, idol...
mga xmas toys ba yan for noche buena and new yr? :)
now that i have two sets of identical gain power amps, i can now try an honest to goodness bi-amping,
just like we did in the 90's before i went overseas as an OFW...
Post by: remington on Nov 21, 2015 at 05:59 PM
Post by: tony on Nov 22, 2015 at 08:16 AM
kaabang-abang yung 829b :o :o :o
oh yes indeed....;)
(https://fbcdn-photos-g-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-0/p180x540/12246950_1032678026753831_3426689540174329678_n.jpg?oh=4dc3d38519ea00c3c0633ba67a6658c6&oe=56EAF8FD&__gda__=1459223352_f6269d852ab71b3398490f59bd67387d)
(https://fbcdn-photos-c-a.akamaihd.net/hphotos-ak-xpt1/v/t1.0-0/p180x540/12234935_1032678046753829_5842699874010429012_n.jpg?oh=12615d7b3fe51b8df83e42b4e91c3332&oe=56E8C257&__gda__=1458038107_f90bc302eacca87b89cf935009dfd2cb)
(https://fbcdn-photos-h-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-0/p180x540/11209518_1032678016753832_5794297844127431987_n.jpg?oh=56149abb03b98e7cb8d437b0ed9a7893&oe=56F532BD&__gda__=1458872197_f6d379eb0cc321d329f02dab7ebbaa17)
tube compliments, 2 each 829B dual beam power transmitting tube, 0A2 gas reg tubes, E182CC dual triodes, EF80 pentodes....
(https://fbcdn-photos-h-a.akamaihd.net/hphotos-ak-xlp1/v/t1.0-0/p180x540/12249625_1032677936753840_2489904281093166091_n.jpg?oh=271b4c186b13776c651a00a6f98de2b2&oe=56F769E0&__gda__=1458621208_fa9370d70653d6d945c752f08ff23f37)
Post by: dana on Nov 23, 2015 at 10:47 AM
oh yes indeed....;)
tube compliments, 2 each 829B dual beam power transmitting tube, 0A2 gas reg tubes, E182CC dual triodes, EF80 pentodes....
(https://fbcdn-photos-h-a.akamaihd.net/hphotos-ak-xlp1/v/t1.0-0/p180x540/12249625_1032677936753840_2489904281093166091_n.jpg?oh=271b4c186b13776c651a00a6f98de2b2&oe=56F769E0&__gda__=1458621208_fa9370d70653d6d945c752f08ff23f37)
829B, yan ang tubo!
tubo ng tunay na lalaki!
tubo ng mga matitigas ang ulo!
nice layout papaT.
Post by: tony on Nov 23, 2015 at 10:59 AM
Post by: tony on Nov 30, 2015 at 11:39 AM
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xlp1/v/t1.0-9/12294793_1036092799745687_7219343353200899392_n.jpg?oh=c2b86b8b103720fe206534ca0f0a8458&oe=56FAD2F2&__gda__=1458535911_1942cc4978ea9e70eeb1c42eac2955c6)
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xpf1/v/t1.0-9/12295315_1036092833079017_5709246829830556390_n.jpg?oh=180d5e396d15833e656ac3e03fe85f3c&oe=56F32F5A&__gda__=1458739557_623c529da99b18c71a7fbc27ccdc9e3b)
(https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xfa1/v/t1.0-9/12316452_1036092816412352_8158877117480138714_n.jpg?oh=95455a1cef7541922496195d09bc09cc&oe=56D7585A&__gda__=1457349841_aa783eeeea32ead97a42229941cb1a5c)
Post by: kayee on Dec 03, 2015 at 04:07 PM
Post by: tony on Dec 03, 2015 at 05:09 PM
sir tony di ba delikado yung tube amp na transformerless, may nakita ako na mga schematic (practical amplifier diagrams) by jack robin and chester lipman yung author..but meron siyang Output na trafoss ang gamit lang is 200 ohm line cord resistor from AC...
delikado talaga, nakamamatay....huwag tularan....eh pwede naman maglagay ng isolation traffo....
Post by: dana on Dec 04, 2015 at 09:03 AM
maagang pamasko from my eldest daughter....:D
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xlp1/v/t1.0-9/12294793_1036092799745687_7219343353200899392_n.jpg?oh=c2b86b8b103720fe206534ca0f0a8458&oe=56FAD2F2&__gda__=1458535911_1942cc4978ea9e70eeb1c42eac2955c6)
just what you need papaT, coming from a sensitive and observant daughter...
para daw mapabilis ang paggawa mo at ma fulfill ang mga pending requests...
maluha luha ka pa cguro when you first tried it :)
Post by: tony on Dec 04, 2015 at 11:33 AM
btw, my son is gifting me with a sander very soon....;)
Post by: kayee on Dec 04, 2015 at 04:20 PM
Post by: tony on Dec 04, 2015 at 06:15 PM
sir tony woodworking na ata next hobby mo sir.... :) sir what do you think dun sa pinadala ko na diagrams luma na yung book but maayos naman yung schematic sir...may nakita ako sa youtube dun niya kinuha yung 3 tubes 4 watts ac amplifier sir.
nakita ko na dati yan...anong page yung sinasabi mong amp?
sung araw kasi mung uso ang mga 5 tube ac-dc radios hindi sadyang isolated sa mains...
Post by: tony on Dec 06, 2015 at 11:07 AM
eto yon, 12 volt version nga lang....para magamit mo sa diy mo...;)
(https://fbcdn-photos-f-a.akamaihd.net/hphotos-ak-xlf1/v/t1.0-0/s480x480/12308571_914987788585247_8749406095927532466_n.jpg?oh=2e0895b05925bceab130542b49031ae3&oe=56DCEAF3&__gda__=1456927860_c322b81796c8a8d1f99ed1404d14bb93)
Post by: tony on Dec 06, 2015 at 11:18 AM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/12341414_1038794936142140_9149986976241858840_n.jpg?oh=cc0c725060369eeaaf7a57d621e8fd84&oe=56E2ECFF)
Post by: kayee on Dec 06, 2015 at 11:27 AM
@Kayee, kung magawi ka sa house meron akong giveaway para sa iyo,yesss salamat sir tony aga ng pamasko ko :) may dalhin din ako sau potentiometer di ko naman nagagamit baka sir mas magamit mo ito yung dati na binigay ko sa inyo may 5 pcs pa ako sayang naman na di magamit...
eto yon, 12 volt version nga lang....para magamit mo sa diy mo...;)
(https://fbcdn-photos-f-a.akamaihd.net/hphotos-ak-xlf1/v/t1.0-0/s480x480/12308571_914987788585247_8749406095927532466_n.jpg?oh=2e0895b05925bceab130542b49031ae3&oe=56DCEAF3&__gda__=1456927860_c322b81796c8a8d1f99ed1404d14bb93)
Post by: kayee on Dec 06, 2015 at 11:30 AM
@Kayee, kung magawi ka sa house meron akong giveaway para sa iyo,
eto yon, 12 volt version nga lang....para magamit mo sa diy mo...;)
(https://fbcdn-photos-f-a.akamaihd.net/hphotos-ak-xlf1/v/t1.0-0/s480x480/12308571_914987788585247_8749406095927532466_n.jpg?oh=2e0895b05925bceab130542b49031ae3&oe=56DCEAF3&__gda__=1456927860_c322b81796c8a8d1f99ed1404d14bb93)
eto ba yung tinatanong mo?
yup sir tony baka next assembled ko ito yung gagawin ko bossing...ok poh ba yung schematic
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/12341414_1038794936142140_9149986976241858840_n.jpg?oh=cc0c725060369eeaaf7a57d621e8fd84&oe=56E2ECFF)
Post by: tony on Dec 06, 2015 at 11:33 AM
yesss salamat sir tony aga ng pamasko ko :) may dalhin din ako sau potentiometer di ko naman nagagamit baka sir mas magamit mo ito yung dati na binigay ko sa inyo may 5 pcs pa ako sayang naman na di magamit...
sige, text mo na lang ako, okey lang sa yo ang mga metal type tube? octal din, meron akong 5879 na noval pentode in place of 6sj7...
Post by: tony on Dec 08, 2015 at 12:24 PM
sir tony woodworking na ata next hobby mo sir.... :) sir what do you think dun sa pinadala ko na diagrams luma na yung book but maayos naman yung schematic sir...may nakita ako sa youtube dun niya kinuha yung 3 tubes 4 watts ac amplifier sir.
woodworking na nga..... ;D
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/12308321_1039897949365172_616689726363761221_n.jpg?oh=b837a2af65aab79f8c5f5370ff803fb3&oe=56E3508A)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/12311045_1039897956031838_3444712621664761210_n.jpg?oh=e981b6c9d06e289dda350c934c24dfe3&oe=56EB03F8)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/12359853_1039897942698506_741433003206710234_n.jpg?oh=9be3c5d8b2780969637ce7b530c8c07d&oe=56EF2252)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/12311210_1039897932698507_327021948065788990_n.jpg?oh=236373c7fec9ace0bf941a63eaf9b7aa&oe=56DD0780)
Post by: dana on Dec 09, 2015 at 04:41 PM
woodworking na nga..... ;D
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/12311210_1039897932698507_327021948065788990_n.jpg?oh=236373c7fec9ace0bf941a63eaf9b7aa&oe=56DD0780)
very nice, galeng :)
reuse-recycle !
Post by: tony on Dec 09, 2015 at 05:56 PM
Post by: zonks on Dec 09, 2015 at 06:15 PM
Post by: tony on Dec 09, 2015 at 06:17 PM
Post by: tony on Dec 12, 2015 at 01:21 PM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/12342554_1041946485826985_244982571563311227_n.jpg?oh=d47aa6501e6129efcafb87d1c102f8b0&oe=5714D097)
LM3875TF
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/12342561_1041946489160318_4716576219047148785_n.jpg?oh=c16fe34dc493264bc896a0952453a0e1&oe=56E7648B)
leach lo-tim boards...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/12348022_1041946512493649_8766844857252507724_n.jpg?oh=5ad71b181a22d9e37cd1d0e9ffa37ab1&oe=56D47880)
Post by: rochie on Dec 12, 2015 at 05:19 PM
Post by: tony on Dec 12, 2015 at 06:15 PM
Post by: tetablanco on Dec 15, 2015 at 09:56 AM
Post by: tony on Dec 15, 2015 at 10:21 AM
Thanks Sir Tony for your 5894 SET amp! I just never stopped thinking about it ever since I heard it for the first time back in July. After pairing it with your 12sN7 / 80ST tube preamp (which I had upgraded with GE 12SX7s and an RCA 80ST), the sound just opened up across all frequencies and the soundstage is now wider than ever. Together with the Mogami cables I got from DJ (dudong), there is virtually no hum. All in all, I'm just one VERY happy camper. My only dilemma now though is deciding whether or not to keep my superb Master Tony 2A3 tube amp [new Shuguang 2A3Cs / NOS VSI 5U4G / NOS RFT EL682s (D3As)] which I got from Larry (camoteque).
glad that you liked it, that 5894 SET has gone the rounds of listeners and have been validated,
i am making another amp using the same formulation but different layout....
....you will have the first crack at listening to it... ;)
re the 2A3, i suggest that you keep it and just sell the Pasvane 2A3 pair...
but if someone makes a move on it, pwede na rin...
just make sure that the other knows what he is going into....;)
Post by: tony on Dec 19, 2015 at 09:46 AM
the IEC pins went with the cord when the owner tried to yank it out...
this is the best sounding AMX amp i have listened to....:D based on the Dyna SCA35 design...
and the best deal in pdvd for years to come, bought for 3k and 1.5k in repairs and tube change,
this is the best bang for the buck amp there is...a 4.5k integrated amp....
you will not find this amp anywhere else....
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/1934467_1045031108851856_3469450413357026585_n.jpg?oh=17c3d872ca548225fbfdb36ea82b6708&oe=571ED137)
(https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xft1/v/t1.0-9/12366488_1045031068851860_3516232346345422237_n.jpg?oh=b149250719b14aaed60e663f97134d25&oe=5713FCE1&__gda__=1457396096_b4b0acbe959c57605c780259542339f0)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/1919586_1045031172185183_4082969948525259172_n.jpg?oh=0efebf70e8055b8cb45d7776132cb61a&oe=56D40227)
Post by: tony on Dec 19, 2015 at 07:34 PM
(https://fbcdn-photos-c-a.akamaihd.net/hphotos-ak-xpf1/v/t1.0-0/s370x247/12342762_1044152842273016_8791329081110575633_n.jpg?oh=b4480049860ad28fd6b4cabef58c295f&oe=56DF196C&__gda__=1461409479_da3bd961aba98b70cdaa6b297df49c56)
(https://fbcdn-photos-c-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-0/s370x247/12347664_1044152822273018_1464723432736147618_n.jpg?oh=4560c2c27ddf553c739e1984ae6a4f09&oe=56E1C144&__gda__=1457315457_5c6f0b9ae88ec247f3276316249c76c6)
(https://fbcdn-photos-a-a.akamaihd.net/hphotos-ak-xlt1/v/t1.0-0/s240x240/12346546_1044152815606352_4917046512845388684_n.jpg?oh=886a172ac347d2aa51f61d3d31589eef&oe=571DA838&__gda__=1457639507_fdf6d4f8d19910f7970a47e405f5a941)
(https://fbcdn-photos-d-a.akamaihd.net/hphotos-ak-xpf1/v/t1.0-0/s240x240/12360416_1044152925606341_5268547682140337812_n.jpg?oh=37ced0a02e0bf29b4e807d50863115e6&oe=5717347D&__gda__=1457415894_a2075bb76a9f1cb7eb169a4517aa31ea)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/12375957_1044152928939674_104566434361204278_n.jpg?oh=7e8879c7bc04964dad14c0edb3cc792d&oe=570CA03F)
Post by: remington on Dec 19, 2015 at 08:25 PM
Post by: tony on Dec 20, 2015 at 08:09 AM
Post by: tony on Dec 20, 2015 at 08:44 AM
Post by: tony on Dec 22, 2015 at 08:13 PM
Henry is owner and general manager of E-gizmo gave me the distortion meter
to use in testing my amps, now i can tweak and at the same time measure.....
thanks again mr santa claus Henry...
he is too shy to show his face on camera directly....
baka raw mamukhaan sya mga kolehiyala friends nya...
the Filipino DIY community is a closely knit group on facebook numbering in the thousands,
they come from Luzon, Visayas and mindanao....still others are in the middle east...
there we congregate and share ideas, sometimes share parts and tools....
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/12400936_1047080315313602_5989683684372053820_n.jpg?oh=cb92de815e299374c1b25aadff468adf&oe=56D549FE&__gda__=1457378990_1a7201ea4d08f707ee49b34553b61b16)
eto at bitbit ko na....
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/12391977_1047080305313603_95317682492733688_n.jpg?oh=85699d9a2b2c83c245668fdc17d9f3bb&oe=56D8FB8D)
even if business is not that good, the spirit of sharing is never lost....
i can not thank enough the guys from Cebu sending me chips and anti static mats...
Post by: tony on Dec 24, 2015 at 07:42 AM
Post by: remington on Dec 24, 2015 at 07:46 AM
Post by: tony on Dec 24, 2015 at 08:01 AM
Merry Christmas and a very productive and prosperous new year master! Wishing you more tube gears to come!!!
you too...more AN's to come....;)
Post by: kimmy_kimmy on Dec 24, 2015 at 12:40 PM
Post by: tony on Dec 24, 2015 at 12:51 PM
merry christmas sir ton! more success and best of health.
thanks...i am coming out with a poor man's version of the 2A3, watch out for it....;)
Post by: dana on Dec 24, 2015 at 08:16 PM
Best of Health and more exciting tube amps to come.
Post by: hls on Dec 24, 2015 at 10:31 PM
Post by: kayee on Dec 25, 2015 at 07:22 AM
Post by: tony on Dec 25, 2015 at 08:09 AM
Merry Christmas papaT!
Best of Health and more exciting tube amps to come.
Merry Christmas sir Tony
merry christmas sir ton......wishing you in good health para marami pa kau matulungan na pinoy diy'ers.
thanks guys....more hot tubes to come in 2016...
Post by: kimmy_kimmy on Dec 25, 2015 at 12:13 PM
Post by: tony on Dec 25, 2015 at 02:19 PM
eagerly sir ton :)
yes, i want to be able to compare, 250volts/60mA bias of the 2A3 with another tube....;)
directly heated versus indirectly heated cathodes, that will be an epic battle...:D
Post by: tony on Dec 29, 2015 at 11:52 AM
Post by: kayee on Dec 29, 2015 at 12:00 PM
Post by: tony on Dec 29, 2015 at 12:02 PM
:) sir tony salamat sa 6v6gt na xmas.... ^-^ nice meeting you again....
welcome, you are always welcome to visit if you need anything...
thanks for the wooden knobs, russian trimpots and st70 boards...
Post by: tony on Jan 01, 2016 at 07:41 AM
Post by: remington on Jan 01, 2016 at 08:54 AM
Post by: tony on Jan 01, 2016 at 10:24 AM
Post by: kimmy_kimmy on Jan 01, 2016 at 02:47 PM
Post by: tony on Jan 01, 2016 at 04:15 PM
Post by: tony on Jan 11, 2016 at 07:30 PM
will be used in my upcoming 120Wpc 4D32 pp AB2 push-pull amp...
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/946473_1057870334234600_4236301021312761222_n.jpg?oh=20b54650522428f4c863f1db5be4db5d&oe=570B6333&__gda__=1460526606_342eca21e4bbd71edcd1c00ee6f4b332)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/12540828_1057870300901270_7286896993676509782_n.jpg?oh=fac4f659bf1d6c55958b3fd1b1355f2f&oe=57444489)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtf1/v/t1.0-9/1237510_1057870294234604_2547327461235496354_n.jpg?oh=978f1e301d863255e2024968605c22d9&oe=5713393D)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/12552668_1057870507567916_4426555657590079326_n.jpg?oh=76d0f527b94c24658d22124de8ed0e16&oe=5701E21B)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpf1/v/t1.0-9/12509754_1057870567567910_692316661686008110_n.jpg?oh=2a52dde44b62ee284e657c3ad5237e8d&oe=570FC378&__gda__=1460102930_226aa6c15307af95d6120ef9f36031eb)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/12509754_1057870584234575_4364065206243649485_n.jpg?oh=014486cf4707e855f733ae2ceef3d315&oe=5745C50D)
Post by: tony on Jan 20, 2016 at 07:00 PM
(https://scontent-lax3-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/12249637_1525564981101769_4029377194199524867_n.jpg?oh=1f8b91633d034c1f01ed891841364358&oe=56FEFE91)
Post by: tony on Jan 24, 2016 at 04:43 PM
done wth the triodes, all trodes are now in one place, now working on signal pentodes as well as triode-pentode tubes... ;D
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/12552794_1064026953618938_68642712032529795_n.jpg?oh=5764d8595b70bb5e48e8e0f450a0d7d4&oe=57338792&__gda__=1463581193_2a54a970c767112e2811c8c83c06ff10)
(https://scontent-ams3-1.xx.fbcdn.net/hphotos-xtp1/v/t1.0-9/12552791_1064026936952273_7670728750453797662_n.jpg?oh=e3410f0bdde8a1bc4a511b2a35334071&oe=57026525)
(https://scontent-ams3-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/12548928_1064026986952268_4922598760674567697_n.jpg?oh=08e70c1bd1839347eb9045e3e1308fc5&oe=572BAFBC)
direct heated tiodes and pentodes meant to run of battery filaments, yummyyy..... >:D
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xaf1/v/t1.0-9/12573028_1064026923618941_3483492585279326835_n.jpg?oh=6312d6ce30b74a18ad9687aaf5e87001&oe=572DC1E7&__gda__=1463678544_d0e873a92aa4484235c303ccabb04e2c)
Post by: rochie on Jan 24, 2016 at 06:01 PM
Post by: tony on Jan 24, 2016 at 07:53 PM
sir tony, do you have some tubes that is good for guitar amp? pre and power tubes.
marami, ang tanong, are you willing to try other tubes than the traditional ones.....i can give you a very good deal if your answer is yes....:D
Post by: rochie on Jan 24, 2016 at 07:57 PM
marami, ang tanong, are you willing to try other tubes than the traditional ones.....i can give you a very good deal if your answer is yes....:Dmay power traffo ako dito na galing sayo i check secondary voltage nakalimutan ko na kasi,yun ang balak ko gamitin para otp na lang ipapagawa ko,any tube will do basta tulungan nyo ako sa schematic
Post by: tony on Jan 25, 2016 at 06:57 AM
may power traffo ako dito na galing sayo i check secondary voltage nakalimutan ko na kasi,yun ang balak ko gamitin para otp na lang ipapagawa ko,any tube will do basta tulungan nyo ako sa schematic
plenty of guitar amps on the web...it's just a matter of adopting certain tube types to a schematics, surely i can help you make up one for yourself..
Post by: tony on Jan 25, 2016 at 10:42 AM
Post by: tony on Feb 17, 2016 at 07:56 PM
tools, tools tools....
(https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xpl1/v/t1.0-9/1910601_1076047365750230_6130939883787769035_n.jpg?oh=b773d9b9320615c6f4390a621baab48e&oe=57249144&__gda__=1462123976_4b386a37ae6ea8f88fcc75cc08bfe92e)
hole saws galore....
(https://scontent-cdg2-1.xx.fbcdn.net/hphotos-xlt1/v/t1.0-9/12744233_1076047359083564_7195641438002240068_n.jpg?oh=3d082658910bbe171a6bf1a86ef4552d&oe=572B4C31)
two holes 38mm...
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xft1/v/t1.0-9/12742042_1076047485750218_6550090060836151826_n.jpg?oh=5b66d96ff58f217c66db1562a4d11aa8&oe=572EEAA5&__gda__=1466349508_0649eea7ba7b23103e2cb3332e19ac8d)
(https://scontent-cdg2-1.xx.fbcdn.net/hphotos-xtp1/v/t1.0-9/12717708_1076047502416883_4318209680375273502_n.jpg?oh=fa3501c8cbc61cb0ec182882a9be1b33&oe=576EB3DD)
more holes....
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xlf1/v/t1.0-9/12717203_1076047515750215_8629503820121157787_n.jpg?oh=557447926bdef8debee4924f3dc13f24&oe=576CA9C8&__gda__=1466381651_38854d856d77c0779225abdbd0365c93)
bottom plate punched out with 70mm holes.....
(https://scontent-cdg2-1.xx.fbcdn.net/hphotos-xlp1/v/t1.0-9/12742763_1076047609083539_8234773602385689535_n.jpg?oh=aaac83a93e13f5b6726c109779fa6ae2&oe=575E9454)
tommorow, finishing....
Post by: wackiedoodle on Feb 18, 2016 at 08:49 PM
Post by: tony on Feb 19, 2016 at 07:55 AM
Post by: ti on Feb 19, 2016 at 09:01 AM
Post by: tony on Feb 19, 2016 at 11:03 AM
Sir. May way po b n malagyan ang mhs tube amp ng timer para mag auto off let say 3 hours... Masarsp kasi pampatulog kaso pag nakatulugan.. Sayang sa kuryente st syempre.. Mainit... Or use n lng ng outlet type kaya po kaya nung mga yun ang load ng tube amp ntin..tia
pwede yan, merong ginawang turn on/turn off design si Dandy F Menor, or you can buy one....
something lke this...http://www.amazon.com/WeMo-Enabled-Electronics-anywhere-Compatible/dp/B00BB2MMNE
Post by: tony on Feb 19, 2016 at 08:24 PM
sanding with 220 grit and 400 grit to remove all sharp edges....
after degreasing, will go to the powder coating shop...
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtl1/v/t1.0-9/12745431_1076508045704162_8130582346817734033_n.jpg?oh=21e997828ba8d89dbec352c3cd7a12e2&oe=5769A043)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/12744133_1076508042370829_324096740010545810_n.jpg?oh=a5104f0181f9446304da1a48b3c66b14&oe=575AE268&__gda__=1465630945_df5d77e5a7040b62d341e124434e2ce1)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xlp1/v/t1.0-9/12744259_1076508019037498_7869321281569897883_n.jpg?oh=59b5732789acdf157d50f18a53c77015&oe=575BD664)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xtl1/v/t1.0-9/12742363_1076508112370822_7602364919518623389_n.jpg?oh=3df77793bdf00c27ff0464b07111c88f&oe=576E7DA6)
Post by: tony on Feb 19, 2016 at 08:31 PM
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/12729108_1077179632303670_4945452996420066538_n.jpg?oh=453aed2b1439d67b31b5391890ceef76&oe=5768556C)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xlf1/v/t1.0-9/12705438_1077179605637006_601080233669595783_n.jpg?oh=5003d9c675e417cf9ba0b805e031388a&oe=5759ED8E&__gda__=1462026993_24ef0feb32c80325749e6e5b59dfeb05)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xlt1/v/t1.0-9/12729170_1077179732303660_2581373497774471133_n.jpg?oh=40cd1fbb07ce1d9fc10f75a76ac9ac0a&oe=576D0038)
Post by: Nelson de Leon on Feb 19, 2016 at 08:34 PM
testing 4D32 tubes to use in my upcoming SET amplifiers build....
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xpt1/v/t1.0-9/12729108_1077179632303670_4945452996420066538_n.jpg?oh=453aed2b1439d67b31b5391890ceef76&oe=5768556C)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xlf1/v/t1.0-9/12705438_1077179605637006_601080233669595783_n.jpg?oh=5003d9c675e417cf9ba0b805e031388a&oe=5759ED8E&__gda__=1462026993_24ef0feb32c80325749e6e5b59dfeb05)
(https://scontent-sea1-1.xx.fbcdn.net/hphotos-xlt1/v/t1.0-9/12729170_1077179732303660_2581373497774471133_n.jpg?oh=40cd1fbb07ce1d9fc10f75a76ac9ac0a&oe=576D0038)
Malakas yan! Yan din makina ng Mitsu canter ko. 4D32. Hehe!
Post by: tony on Feb 19, 2016 at 08:35 PM
Post by: tony on Feb 25, 2016 at 11:48 AM
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xtp1/v/t1.0-0/p240x240/12744706_1080149585340008_7199966877945995042_n.jpg?oh=0af9674b837af4f5909c2658b4104c9e&oe=575799FF)
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xpf1/v/t1.0-9/3609_1080149655340001_7508963605389641525_n.jpg?oh=ce17cc80a8299351f50a93976e849065&oe=5754A25B)
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xpt1/v/t1.0-9/12718046_1080149708673329_3696255039039492069_n.jpg?oh=8785ebcd0804abe4626af05b1130d361&oe=576FB069)
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xaf1/v/t1.0-9/10268443_1080149768673323_8992319108573848558_n.jpg?oh=7b654c8fb6bf5aa313e89b0326e724d8&oe=57575681)
Post by: tony on Feb 28, 2016 at 08:53 AM
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xtp1/v/t1.0-9/12800182_1081837838504516_7081828255427147723_n.jpg?oh=2f0ac1a309852b8546ad4a6fcc5e3302&oe=5758AAD3&__gda__=1466101749_c6d357e0296e04ecbb6d2ede7a3e45ee)
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/1496967_1081837828504517_5721186111264101863_n.jpg?oh=4f6222cce373215e7976ff304e8ea3ce&oe=57603490&__gda__=1465978137_b7b041a4d48bd14e31bfcf171bfca272)
Post by: at_sunset_blvd on Mar 02, 2016 at 07:02 AM
Malakas yan! Yan din makina ng Mitsu canter ko. 4D32. Hehe!
;D
Post by: tony on Mar 02, 2016 at 07:19 AM
http://amfone.net/Amforum/index.php?action=printpage;topic=30439.0
the vietnamese came up with this 4D32 pp power amp, they are miles ahead of us....
http://thivanlabs.com/en/news/vietnam-world-news/345-a-diy-high-power-tube-amplifier-contest-of-vietnamese-audiophiles.html
(http://thivanlabs.com/images/thivan/tintuc/cuoc-thi-am-li-den/anh-7-3347-1386561560.jpg)
Post by: tony on Mar 02, 2016 at 11:09 AM
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xtp1/v/t1.0-9/12803031_1083492888339011_7221588358512872040_n.jpg?oh=f429ba68fb20551b0fe1eb808adb1347&oe=574ABB78)
Post by: ndotcom on Mar 02, 2016 at 03:53 PM
May nabili kasi ko dito 1$/pc 5670 JAN Raytheon 4/1964 production same batch kaso 5pcs lang. May incoming din ako 6N3P-EV russian.
Post by: tony on Mar 02, 2016 at 04:26 PM
so ang character ng aikido ay nadedevelop sa harap na tubes, yun ang pwedeng i rolling...
russian tubes rock......;)
Post by: tony on Mar 03, 2016 at 07:21 AM
Post by: tony on Mar 08, 2016 at 05:42 PM
cathode bias around 12 volts, each output tubes at around 30mA each
so that each output tube dissipates about 10 watts a piece
when mains voltage is about 230 volts....
i will give this amp a clean bill of health...:D
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xtf1/v/t1.0-9/12795481_1087147271306906_4214513352702115523_n.jpg?oh=68cd3f5b5b1fb7fb0ff689e6e019b4ef&oe=579277C9)
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xla1/v/t1.0-9/12376797_1087147297973570_5209769100246251654_n.jpg?oh=f2ed08954b3fffa9466ffbb3e77b2adc&oe=57523C53&__gda__=1469113757_178c5d2a5956162ee7b48ab6e665a846)
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/12806125_1087147304640236_6931010790715678829_n.jpg?oh=57b0e0e063a0d56ac111b34bc84d1dac&oe=57637BEF)
(https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/12813937_1087147424640224_3478232061689845351_n.jpg?oh=97d2624fc1e916111b638bfdd3dcf08e&oe=574AA246&__gda__=1465200918_68dfb0af49f3509ae49ce52acd2c2723)
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xfa1/v/t1.0-9/12321576_1087147457973554_3291947617354868314_n.jpg?oh=9e18f822f393086c67314797a25bec30&oe=574A7A0F)
Post by: tony on Mar 08, 2016 at 09:07 PM
Post by: tony on Mar 08, 2016 at 09:21 PM
filaments alone draws 80 watts from the line,
another 80 watts will be drawn once completed,
projected losses in the 180 watt range,
this is because of the lower losses in the power traffo,
Edrel's iron are truly of good quality....;)
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xaf1/v/t1.0-9/10437441_1086787404676226_9073170661503971145_n.jpg?oh=64905f15a2e9342097de589d07d1693b&oe=5793E7F1)
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xtp1/v/t1.0-9/12717943_1086787424676224_7644438570302929973_n.jpg?oh=8f967c2442c1db2e4365e32acce4888e&oe=57552145)
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xfl1/v/t1.0-9/12512275_1086787411342892_1716121763037927161_n.jpg?oh=6d3ace4582d558a18830cb90a29baa46&oe=575F07D7)
Post by: tony on Mar 18, 2016 at 02:24 PM
another 2A3 set modification completed, tweaking goes on, but for now,
i am sure i will be able to put a smile on the owner's face...;)
driver tube used the TFH( tube from hell) we at diyadio codenamed to slow
down them you know who....;)
the driver tube is a 12HL7, but 12GN7 and 12BY7 can also be used....
these are video pentodes wired as triode, their high transconductance accounts
for the high local open loop gains...
i am unable to challenge the JJ's past the 250volt 60mA operating point
due to limitations of the power traffo....
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xaf1/v/t1.0-9/s851x315/1620475_1093246744030292_4564540087824532135_n.jpg?_nc_eui=ARj6GOXp6eAuveTSTjB3HAG9d3Mt7TlgTATR9o79Z66skqPIJUuFcIpgB3kF&oh=cba9735d2c6f354b07ca74d509ab6ae3&oe=578D1E45)
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xfp1/v/t1.0-9/10593094_1093246797363620_8505959577886414789_n.jpg?_nc_eui=ARivLUjgo-V2HffDbMuQs0BQhwJAE8iXtM_Sz49_mvoY0I47li_xq0l9dqqV&oh=4140426947ae61c648638cf2edfc7077&oe=574D2948)
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xaf1/v/t1.0-9/1620475_1093246744030292_4564540087824532135_n.jpg?_nc_eui=ARhFS-YuiMp9ZnOvlQonKoYn0GZk0f1cK6_Oy5w_QC-jgz3mN_kTFq9KJwX0&oh=0dbc4f12ca977ed058b31fdddec114ac&oe=57529A4C)
Post by: junbathan on Mar 19, 2016 at 08:04 AM
Post by: tony on Mar 19, 2016 at 12:20 PM
Sir Tony do you have ECC83's? Have you tried using them? Thanks
i do, they are the european equivalent of the 12ax7....they are available here: http://epektos.com/product/a6b8f937-c909-45f9-a908-8e05164dde3b.aspx
Post by: junbathan on Mar 19, 2016 at 09:31 PM
Post by: tony on Mar 20, 2016 at 07:30 AM
Is it cheaper than the 12AX7 sir?
depends on how you define cheap, there is this german guy in OLX selling the 12ax7 for about 4.4k each...https://www.olx.ph/item/12ax7-ecc83-original-german-made-valvo-pre-amp-tube-ID77Je3.html?p=2&h=8417296699#8417296699
Post by: tony on Apr 01, 2016 at 05:34 PM
filaments only shows power draw of 42 watts...
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/12321687_1106386562716310_3137543667702337125_n.jpg?_nc_eui=ARj01PBkrZnaF5tMuwWYg-4gHluu6l75HDc8Zo_WSVB4zPa4S0dxW_HC0hgj&oh=b4bb50cf8aa4fe7a2b2ba037ff1dc314&oe=577D1F5F)
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xta1/v/t1.0-9/12924468_1106386546049645_4660273388353816151_n.jpg?_nc_eui=ARggOZ8x74b9GIFpovGW12CaSvi0C2Z35oGx6ZMWmcywe5aW5wuwWYI9KvxQ&oh=78c78ec3cd0f55b3ac43f3e6504c17f7&oe=57BEBF32&__gda__=1468554191_4b7290aeffd13e5970dc7245c6c162cc)
power draw when amp is fully operational....108 watts with 40 volts on the grid
2A3 tube dissipation is about 16 watts per plate....
(https://scontent-hkg3-1.xx.fbcdn.net/hphotos-xla1/v/t1.0-9/12523888_1106386556049644_7805236621525525631_n.jpg?_nc_eui=ARgLyOESnI0qugjXldnsqcfJfmviOg1atdGNTt8BQbGNLOgmFChp2tDfY3Gz&oh=80d04cc14a491eda87001b7abb751327&oe=577675FD)
underside after the modification....
(https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xal1/v/t1.0-9/12920509_1106386636049636_1891788073763533305_n.jpg?_nc_eui=ARh-qWkJ7tG8gfPwe5Syn7zPYZijrfiTedkOunhYXd5KQBRpjRbclwhsrDyj&oh=1d7e0f100801d5b90885a3f5189f3035&oe=5774EE64&__gda__=1467835208_a200652ac7031b38ba0090817211a307)
Post by: tony on Apr 11, 2016 at 07:33 AM
Sir Tony, this preamp is interesting. I've been wanting to try an aikido preamp for my set up yun lang i heard its a bit pricey kaya hindi ko pinursue. If this small preamp can equal or better the aikido with a budget price, wow gusto ko din nito sir. If you are to make a new one of this, how much would it cost now sir? I intend to pair it with my emotiva xpa2 gen 2 sir. Can you please pm me sir?
Choyb, congrats & enjoy this wonderful preamp by sir Tony.
yes i will make one for 5k, i just need to import the 6H23 tubes, they have risen in price, they now sell for U$25 each....
fyi, if cost is no object, i can also make pricey preamps if that is desired...upwards of 30k....
Post by: ajayxyz11 on Apr 11, 2016 at 08:25 AM
yes i will make one for 5k, i just need to import the 6H23 tubes, they have risen in price, they now sell for U$25 each....
fyi, if cost is no object, i can also make pricey preamps if that is desired...upwards of 30k....
Sir Tony, will there be a big difference in sound quality between the 5k budget preamp & the pricey one in the 30k budget. The obvious difference that I imagine would be the quality durability of materials to be used but what about the SQ? Please advise.
Post by: tony on Apr 11, 2016 at 08:42 AM
Sir Tony, will there be a big difference in sound quality between the 5k budget preamp & the pricey one in the 30k budget. The obvious difference that I imagine would be the quality durability of materials to be used but what about the SQ? Please advise.
i do not usually answer these type of questions...this makes me different from other diy'ers....
i leave it up to you the end users to decide and only after you have compared them both side by side....
but to give you a hint, anything i build that is not to my liking, i tear it down and start over again...
and this much i can say, tube gears can be made to any price point, but in the end you decide
what you like...
Post by: ajayxyz11 on Apr 11, 2016 at 09:44 AM
i do not usually answer these type of questions...this makes me different from other diy'ers....
i leave it up to you the end users to decide and only after you have compared them both side by side....
but to give you a hint, anything i build that is not to my liking, i tear it down and start over again...
but this much i can say, tube gears can be made to any price point, but in the end you decide
what you like...
Sir Tony I understand what you mean. Let's go back to the nice 5k preamp, say what if we make a better or special version of it with better parts, mundorfed, premium caps, etc..how much do you think are we looking on this? Also, is a balanced XLR output possible to add in a tube preamp? I've never seen one but wondering because my power amp also have inputs for balance connection. I beginning to get excited on this sir.
Post by: choyb on Apr 11, 2016 at 10:07 AM
yes i will make one for 5k, i just need to import the 6H23 tubes, they have risen in price, they now sell for U$25 each....I' ve checking & reading the web re the 6H23, it is highly regarded by DIY'ers and audio enthusiasts.
fyi, if cost is no object, i can also make pricey preamps if that is desired...upwards of 30k....
Kaya naman, highly sought after.
Would not have known about this tube if not for you...Salamat po!
Post by: rochie on Apr 11, 2016 at 10:07 AM
Post by: tony on Apr 11, 2016 at 12:24 PM
Sir Tony I understand what you mean. Let's go back to the nice 5k preamp, say what if we make a better or special version of it with better parts, mundorfed, premium caps, etc..how much do you think are we looking on this? Also, is a balanced XLR output possible to add in a tube preamp? I've never seen one but wondering because my power amp also have inputs for balance connection. I beginning to get excited on this sir.
of course, what you wish for can be done....
XLR output on a true balanced output preamp is in the works..
i have been toying with this idea for a time now.....
but it will go far away from the original theme, a low cost amp that is bang for the back....
i have several other preamps, they cost more to make, but there are those who come back to me looking for those...
i made these preamps several years ago....
(http://i5.photobucket.com/albums/y155/leoman53/3%20preamps/110723-021.jpg) (http://s5.photobucket.com/user/leoman53/media/3%20preamps/110723-021.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/3%20preamps/110723-015.jpg) (http://s5.photobucket.com/user/leoman53/media/3%20preamps/110723-015.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/3%20preamps/110723-025a.jpg) (http://s5.photobucket.com/user/leoman53/media/3%20preamps/110723-025a.jpg.html)
Post by: tony on Apr 11, 2016 at 12:27 PM
1 mundorf capacitor = 5k preamp
i tell those who want these in their amp to buy those themselves and i will gladly put them in,
if there is space for it...;)
otherwise i go by technology, polypropylenes are best for me, WIMA's are excellent caps...
Post by: rochie on Apr 11, 2016 at 12:36 PM
(http://uploads.tapatalk-cdn.com/20160411/15f001089f6db57a1b3aa2536bf9e56c.jpg)
Post by: tony on Apr 11, 2016 at 12:39 PM
Post by: rochie on Apr 11, 2016 at 12:52 PM
those are golden treasures you got there rochie, are those for sale?you need some?ill send you the list.
Post by: tony on Apr 11, 2016 at 12:53 PM
Post by: ajayxyz11 on Apr 11, 2016 at 01:01 PM
of course, what you wish for can be done....
XLR output on a true balanced output preamp is in the works..
i have been toying with this idea for a time now.....
but it will go far away from the original theme, a low cost amp that is bang for the back....
i have several other preamps, they cost more to make, but there are those who come back to me looking for those...
i made these preamps several years ago....
(http://i5.photobucket.com/albums/y155/leoman53/3%20preamps/110723-021.jpg) (http://s5.photobucket.com/user/leoman53/media/3%20preamps/110723-021.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/3%20preamps/110723-015.jpg) (http://s5.photobucket.com/user/leoman53/media/3%20preamps/110723-015.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/3%20preamps/110723-025a.jpg) (http://s5.photobucket.com/user/leoman53/media/3%20preamps/110723-025a.jpg.html)
Glad to know about the balance connection sir Tony. Let's forget about the mondorf & go by the technology as you put in your quality amps. I agree with you on the WIMA's. Incorporating the XLR balance & using WIMA's to the 5k preamp design, how far are we adding in the budget cost sir? Can you quote me on this sir? I really am looking forward on this preamp. Thank you for entertaining me on my questions sir.
Post by: tony on Apr 11, 2016 at 01:04 PM
are you a fan of directly heated tubes like to 26 or 10y?
or indirectly heated types like the 6dj8 and 12au7's?
Post by: ajayxyz11 on Apr 11, 2016 at 01:33 PM
^ i have just the design you are asking for....
are you a fan of directly heated tubes like to 26 or 10y?
or indirectly heated types like the 6dj8 and 12au7's?
Sir Tony, honestly Im a newbie in tube technology & to consider a direct or indirect heated tube, what's their advantage, disadvantage and how do I recognize one? I do like to learn this as part of my journey in this hobby. I appreciate some points but not too technical that I may not be able to understand yet.
Post by: ajayxyz11 on Apr 11, 2016 at 03:30 PM
Post by: fishda on Apr 11, 2016 at 05:32 PM
Post by: tony on Apr 11, 2016 at 07:26 PM
Sir Tony, in short I am not really technically inclined & this would be my 1st tube preamp if you will help me own one. Which tube is more appropriate or best suited for this design? Thanks.
okey, it will help if you can tell me the model number
of the power amp you are pairing this preamp with.
i need to consider the info on my design...
please pm me a budget that i can work around with....
i assure you the money spent will be well worth the finished product...
or you don't pay if not satisfied....
i am also looking to build balanced tube preamp for another project...
Post by: tony on Apr 11, 2016 at 07:50 PM
one of the 4 big caps shorted out, so i rewired the unit to run off the 220 volts
mains without the need to rewind the power traffos...
modified the power inlet to use the IEC socket for the power cable...
before
(http://i5.photobucket.com/albums/y155/leoman53/VTL%20Stereo%2050/IMG_7194_zps1o6eykry.jpg) (http://s5.photobucket.com/user/leoman53/media/VTL%20Stereo%2050/IMG_7194_zps1o6eykry.jpg.html)
after...
(http://i5.photobucket.com/albums/y155/leoman53/VTL%20Stereo%2050/IMG_7211_zpspojxipy8.jpg)
(http://i5.photobucket.com/albums/y155/leoman53/VTL%20Stereo%2050/IMG_7209_zpsiymmdtpe.jpg)
(http://i5.photobucket.com/albums/y155/leoman53/VTL%20Stereo%2050/IMG_7212_zps4hnahjds.jpg)
Post by: NMM1 on Apr 12, 2016 at 10:30 AM
Post by: choyb on Apr 12, 2016 at 10:35 AM
Sir Tony, in short I am not really technically inclined & this would be my 1st tube preamp if you will help me own one. Which tube is more appropriate or best suited for this design? Thanks.Go for it, @ajayxyz11!
Hope Sir Tony can do a regular update-post of the build as he had done with his other projects!
Exciting!
Post by: tony on Apr 12, 2016 at 11:46 AM
Post by: ajayxyz11 on Apr 12, 2016 at 12:56 PM
okey, it will help if you can tell me the model number
of the power amp you are pairing this preamp with.
i need to consider the info on my design...
please pm me a budget that i can work around with....
i assure you the money spent will be well worth the finished product...
or you don't pay if not satisfied....
i am also looking to build balanced tube preamp for another project...
Hi Sir Tony, sent you PM po for power amp specs & budget. Pa-advise na lang po sa budget.
What is a good sounding tube that can be used? 12ax7 lang po usually naririnig ko from my friends amp. I think I'll just leave it to your personal discretion on what to use?
Thank you,
Jay Villanueva
Post by: tony on Apr 12, 2016 at 07:47 PM
i have a tube line amp with XLR outputs that a friend brought in for tweaking...
once done i will seek his permission to lend to you, i am sure he wouldn't mind...
i am also coming up with a marantz clone due to insistent public demand...
i myself is amazed at why people find this line to their liking even though
this amp uses global negative feedback that most audiophiles abhor...;)
6dj8 line amp with xlr output jacks...
(http://i5.photobucket.com/albums/y155/leoman53/torroids/IMG_7222_zpsopcyzfzv.jpg) (http://s5.photobucket.com/user/leoman53/media/torroids/IMG_7222_zpsopcyzfzv.jpg.html)
Post by: ajayxyz11 on Apr 13, 2016 at 10:54 AM
Jay, pm replied....line preamps do not need to use the 12ax7 with today's program sources,
i have a tube line amp with XLR outputs that a friend brought in for tweaking...
once done i will seek his permission to lend to you, i am sure he wouldn't mind...
i am also coming up with a marantz clone due to insistent public demand...
i myself is amazed at why people find this line to their liking even though
this amp uses global negative feedback that most audiophiles abhor...;)
Sir 12ax7 is not my preference, I am leaving it you on what's more appropriate & better for the design, I'm sure they'lle be excellent for the works. Thanks!
Post by: tony on Apr 13, 2016 at 01:53 PM
Sir 12ax7 is not my preference, I am leaving it you on what's more appropriate & better for the design, I'm sure they'lle be excellent for the works. Thanks!
great, then on to the design stage then...
Post by: tony on Apr 14, 2016 at 09:56 AM
although made in china, this amp uses american surplus caps, resistors and army surplus transformers...
of you look under the hood, you will find it parts laden...the price seems to come close to the cost of of parts...;)
picture does not give justice to the beauty of workmanship, i am awed.....
transformer coupled output for a balanced input just as i suspected....
i can not in conscience tamper with this line amp....i am sure there will be someone
who will find this amp to his liking...
(http://i5.photobucket.com/albums/y155/leoman53/bez-q3b/IMG_7223_zpsxw5zmyds.jpg) (http://s5.photobucket.com/user/leoman53/media/bez-q3b/IMG_7223_zpsxw5zmyds.jpg.html)
i have converted this line amp to 220 volts, apparently there is a voltage selector at the back,
i merely covered it with black plastic strip after setting to 330 volts mains do that we do not have
to worry about Murphy....
(http://i5.photobucket.com/albums/y155/leoman53/bez-q3b/IMG_7225_zps2yigqtvg.jpg) (http://s5.photobucket.com/user/leoman53/media/bez-q3b/IMG_7225_zps2yigqtvg.jpg.html)
Post by: dana on Apr 14, 2016 at 11:24 AM
volume step attenuator ba gamit nya papaT ?
Post by: tony on Apr 14, 2016 at 11:29 AM
Post by: ajayxyz11 on Apr 15, 2016 at 09:40 AM
Post by: tony on Apr 15, 2016 at 12:27 PM
Ang ganda nyan sir, similar ba sa design nito gagawin mo for me sir?
much simpler, based on the Impasse preamp designed by my co-moderator at Diyaudio, Stuart Yaniger...http://www.tech-diy.com/Preamplifiers/ImPASSe/Impasse_LowRez.pdf
i am asking for permission from the owner to let you get a taste of this fine line amp.....please stand by...
btw, are you by any chance related to Danny Villanueva, i have been exchanging emails with him too..
Post by: tony on Apr 16, 2016 at 08:13 AM
Post by: tony on Apr 16, 2016 at 08:55 AM
it now time to calibrate this amp, steady idling B+ is at 500 vdc, first time for me to see
this on a 5881 tube.....but no signs of red plating, this amp is good to go...
bias seems close to each other....for final adjustment of bias, i set the grid voltage \
so that there is about 30mA on each cathodes for a tube dissipation of about 15 watts each
ensuring long tube life...
the original tube data shows 20 watts plate dissipation, new production claims 30, so i will rather be safe than sorry.....http://www.drtube.com/datasheets/5881-tungsol1962.pdf
(http://i5.photobucket.com/albums/y155/leoman53/VTL%20Stereo%2050/IMG_7229_zpsnbuww2fp.jpg)
(http://i5.photobucket.com/albums/y155/leoman53/VTL%20Stereo%2050/IMG_7228_zpsldm5mejj.jpg)
Post by: tony on Apr 16, 2016 at 09:33 AM
power transformer rewind and busted/leaky caps replaced...
the owner gave me 2 (two) hitachi 6SN7's in another cashless transaction....
and i am going to make me a line stage out of it...
pm me if you want some and i will direct you to George, he says he has a lot more pairs left... ;)
btw, this Precision Fidelity line amp is another clone of the much revered Marantz 7, and used the 12AX7...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7177_zpslkj0wyan.jpg)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7178_zps8jcxjm7a.jpg)
Post by: ajayxyz11 on Apr 16, 2016 at 02:34 PM
much simpler, based on the Impasse preamp designed by my co-moderator at Diyaudio, Stuart Yaniger...http://www.tech-diy.com/Preamplifiers/ImPASSe/Impasse_LowRez.pdf
i am asking for permission from the owner to let you get a taste of this fine line amp.....please stand by...
btw, are you by any chance related to Danny Villanueva, i have been exchanging emails with him too..
Sir Tony, though i cant understand a lot of technical terms, Impasse preamp seem very good, simple yet it has the efficiency to equal or better a more complex design. Really excited to see how you will build this one sir.
Sir Tony im not sure about sir Danny Villanueva po, maybe a distant relative if he's an ilocano hehe..
Post by: tony on Apr 16, 2016 at 05:21 PM
Sir Tony, though i cant understand a lot of technical terms, Impasse preamp seem very good, simple yet it has the efficiency to equal or better a more complex design. Really excited to see how you will build this one sir.
Sir Tony im not sure about sir Danny Villanueva po, maybe a distant relative if he's an ilocano hehe..
i will ask him when i have the chance....i am building Nelson Pass Amp Camp, a mosfet single ended class A amp, i will need a balanced preamp to drive them also.....
the Impasse Preamp is a well engineered amp, pure science, no bell and whistles, no botique parts,
just pure sounds...
Post by: choyb on Apr 16, 2016 at 09:24 PM
i will ask him when i have the chance....i am building Nelson Pass Amp Camp, a mosfet single ended class A amp, i will need a balanced preamp to drive them also.....Nelson Pass Amp Camp amp...Wow! Interested!
the Impasse Preamp is a well engineered amp, pure science, no bell and whistles, no botique parts,
just pure sounds...
Post by: tony on Apr 17, 2016 at 07:29 AM
Nelson Pass Amp Camp amp...Wow! Interested!
copy sir...
Post by: choyb on Apr 17, 2016 at 07:39 AM
copy sir...Pm sent
Thanks
Post by: tony on Apr 17, 2016 at 08:46 AM
Pm sent
Thanks
pm replied.....i will let you test it once i get the prototypes up and running...
my plan is to make 4 boards or 4 channels and bridge two for stereo configuration..
that is why i will need the Impasse preamp for driving these.....
Post by: tony on Apr 17, 2016 at 08:49 AM
covers for the main power traffo and filter caps in place....
(http://i5.photobucket.com/albums/y155/leoman53/4D32%20SET/IMG_7217_zpsatwmg6np.jpg) (http://s5.photobucket.com/user/leoman53/media/4D32%20SET/IMG_7217_zpsatwmg6np.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/4D32%20SET/IMG_7219_zpsselpxafm.jpg) (http://s5.photobucket.com/user/leoman53/media/4D32%20SET/IMG_7219_zpsselpxafm.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/4D32%20SET/IMG_7218_zpseiu5rpfj.jpg) (http://s5.photobucket.com/user/leoman53/media/4D32%20SET/IMG_7218_zpseiu5rpfj.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/4D32%20SET/IMG_7107_zpstc1jevzi.jpg) (http://s5.photobucket.com/user/leoman53/media/4D32%20SET/IMG_7107_zpstc1jevzi.jpg.html)
Post by: tony on Apr 26, 2016 at 07:40 AM
https://www.facebook.com/tony.tecson/posts/1120320757989557?notif_t=like¬if_id=1461626244716613
VTL stereo 50 restored to 220volts......discussions here....
https://www.facebook.com/groups/1580770625569500/permalink/1586215268358369/
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xpf1/v/t1.0-9/13095800_1119268548094778_8750320375731577283_n.jpg?oh=7e99f84861df92114826b9798318ee72&oe=579F6AD6)
Post by: tony on Apr 27, 2016 at 07:25 AM
(https://scontent.fmnl3-2.fna.fbcdn.net/hphotos-xlf1/v/t1.0-9/13012677_1119268474761452_5107649894364318559_n.jpg?oh=55f48b8736821f2278f9fc538c557f51&oe=57A9359B)
Post by: tony on May 09, 2016 at 05:35 PM
(https://scontent-hkg3-1.xx.fbcdn.net/v/t1.0-9/13174177_1128114790543487_6107434079590494284_n.jpg?oh=0476a050cafd8f0261be791112ce6456&oe=57A7763A)
(https://scontent-hkg3-1.xx.fbcdn.net/v/t1.0-9/13124630_1128114813876818_186757706111832191_n.jpg?oh=6c1cf89ca9188bfa6a85b89238558293&oe=57A9CCE8)
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-xlp1/v/t1.0-9/13179040_1128114803876819_2578891812436853764_n.jpg?oh=97f534d47f8396618ce77d06060aad2a&oe=579FB476&__gda__=1470069091_9428d0b7ed3a92590db8dcc8f6bcc162)
Post by: dana on May 09, 2016 at 06:13 PM
pang "Lifetime" (brand) na ba yan :)
Post by: at_sunset_blvd on May 09, 2016 at 06:18 PM
Post by: tony on May 09, 2016 at 08:35 PM
nice.
pang "Lifetime" (brand) na ba yan :)
two lifetimes....:D
Post by: tony on May 09, 2016 at 08:36 PM
Look at those Boxes full of tubes :o
i have as of this time about 3800 pcs of tubes....still looking to buy more....;)
Post by: parasound on May 09, 2016 at 08:58 PM
Sent from my iPhone using Tapatalk
Post by: tony on May 09, 2016 at 09:11 PM
Ganda sir ng amp na nakataob sa mesa, ilalim pa lang yummy na
Sent from my iPhone using Tapatalk
thanks, it is a PP 6C33 amp.......
an OTL 6C33 amp is cominng soon....
Post by: tony on May 14, 2016 at 10:06 AM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13237657_1130737893614510_8630680976576363063_n.jpg?oh=7c5917aa0cd62d780ce1fbc8b5ee1fb3&oe=57DAC1E1)
two tubes on the right are near end of life...these are how heavily used tubes look like....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13179028_1130738093614490_3110307427551452742_n.jpg?oh=95094d9488758a3800c9c780e16e794a&oe=57D5FEF9)
fixed dents on bottom plate...
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13177519_1130737910281175_6628738106793680183_n.jpg?oh=a1ea9fefcae6323252331e90c4891aea&oe=579DC8D5)
Post by: tony on May 16, 2016 at 08:23 AM
Alex Rodil came up with four amps, and Kiko Jimenez two amps, all diy,
for comparison a Pioneer A-505 was also tested...
at the one watt level, i.e. 2.8 volts into 8 ohms load...
this is how crossover distortion looks like in a rockola amp...
only this amp showed this notch of the 6 other amps tested...
we are indeed fortunate to see this firsthand...
biasing the output stage can easily fix this issue..
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13087490_1131887066832926_5853166546180622195_n.jpg?oh=d9e3b176cca9742e5974ccd4cc92b7f4&oe=57E3EA34)
Post by: tony on May 16, 2016 at 12:42 PM
the goal of testing this time around was to confirm amplifier efficiency of around 64%....
then FTC testing using a 1kW dummy load at 1khz test frequency...
we wanted to find out rail sag at full power, here we were able to correlate
power traffo size with voltage sag at full load...
left to right, Kiko, Norman, tony, Efren, Jun, and Alex....
these guys did all the work, i was a mere spectator...:D
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13240735_1104543086254200_3900142793905903478_n.jpg?oh=e9f1e5a2a3ef76a8269dd46de4a65f03&oe=57DD826B)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13239358_1131888616832771_2896742162470032194_n.jpg?oh=21d1ffd1024f397d59d2287e28dab79e&oe=57DD5E26)
no, these are not what they look to be, casings are coming out of china,
but the innards are all pinoy made....
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13226716_1131888633499436_1422962892278477071_n.jpg?oh=dc51eac5795b5e3fd157536d7a517122&oe=57D5A514)
Post by: tony on May 16, 2016 at 08:04 PM
Post by: tony on May 16, 2016 at 08:29 PM
idle/no load power loss of just 10 watts...
for a traffo good for 1kva..
traffo is delivering over 200 watts on stanby, that is why a good quality
H18/M24 is a must, M6/z11 is even better but will cost much more...
the deeco iron which is an H50 simply can not run cool here...
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13254194_1132116646809968_9022136144211931032_n.jpg?oh=a0b8c57fc9ab6d91d770701c9c630848&oe=579CA73D)
with the electrostatic sheilds in place:
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13179195_1132116636809969_6219182209028885761_n.jpg?oh=ce16a2e3c4fabc717b025d9cdbe6a07d&oe=57A6608A)
stacking E and I's....
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13245436_1132116766809956_6124404509359442813_n.jpg?oh=d09fdcc42b8cd07da290dc040bd5d8d5&oe=57DA2B79)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13254162_1132116783476621_5935444305695254307_n.jpg?oh=61907f937361b6c46de33b517946bb77&oe=57A91D2E)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13177957_1132116910143275_1889205364662547437_n.jpg?oh=7bd4d043e0d039e2e97af0f1a52dea38&oe=57D93BFB)
testing prior to soak in varnish...
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13237626_1132117336809899_3356034292967336499_n.jpg?oh=4dc15f45d3afbb1efc899ba40ae4900d&oe=57A6D8E5)
soaking in varnish for 30 minutes....
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13179066_1132117436809889_7880367137987433642_n.jpg?oh=83cfb59190f825a89b8fed2613ca3c34&oe=57E31538)
drip, drip, drip........
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13239949_1132117433476556_3310197877875825423_n.jpg?oh=a7a1ea97b58b98d4a23d10aada5c082c&oe=57E71281)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13177146_1132117443476555_8705011338225128522_n.jpg?oh=eaf44011e2ed1d36d20cef2a4fd99693&oe=57A7B5B2)
Post by: tony on May 18, 2016 at 11:46 AM
https://www.facebook.com/brgy.tanod.12/videos/1105784679463374/
Post by: tony on May 18, 2016 at 07:00 PM
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-0/s480x480/13239295_1133235536698079_8079133929430953202_n.jpg?oh=dc2f80dc92736b300504e5c3421fb0b0&oe=57E022E8)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13230094_1133235533364746_6190799524232337278_n.jpg?oh=9d101ebdaf18bccff01ce221f45eef6a&oe=57A176DC)
Post by: tony on May 21, 2016 at 09:29 AM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7505_zpsftcck53s.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_7505_zpsftcck53s.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7377_zpsxndowdgj.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_7377_zpsxndowdgj.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7381_zpssewrrolj.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_7381_zpssewrrolj.jpg.html)
Post by: tony on May 22, 2016 at 07:47 AM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13241339_1135231583165141_5723451877434291672_n.jpg?oh=56ab79eb0ec9344949c54ccc81f25189&oe=57D5B8D5)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13238908_1135231963165103_6698469647159596450_n.jpg?oh=777d4c9f6ddaf0299fc9dd8d9444826d&oe=57DEA3DB)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13062310_1135231949831771_2436424819759207439_n.jpg?oh=af16de75ae6613d8e923e6ec243f86b0&oe=57DB95E0)
Post by: tony on May 22, 2016 at 12:26 PM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13226729_1135364326485200_4165643990334165744_n.jpg?oh=3c073365bc96e213be1743d928d4ea67&oe=57D4B449)
Post by: tony on May 26, 2016 at 01:18 PM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13240480_1137704462917853_4972011475698394372_n.jpg?oh=120f9a2dbdcc01b2f4ce12de42d522d3&oe=57E2B1FD)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13239956_1137704456251187_4261193932970094553_n.jpg?oh=403c16f1ce037b6359d881159a2b9b24&oe=57CD23F0)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13266080_1137704452917854_5584877993403515399_n.jpg?oh=f85572c18d15742041ef2b655d557618&oe=57E76C64)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13256509_1137704569584509_125544018991370614_n.jpg?
oh=350ceec288e876efd3d8059705202aa4&oe=57CDD5B3)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13245350_1137704576251175_6812840457936263175_n.jpg?oh=0f8e97eebe988390b8804c25a6c000e0&oe=57C95FC0)
Post by: tony on May 26, 2016 at 01:38 PM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13245452_1137713276250305_1197252613119865973_n.jpg?oh=2d7192b87494fa936df17f59f0ce03d0&oe=57D936D9)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13310431_1137713539583612_8173286528391245999_n.jpg?oh=930d331b372f5e273d086c47ee887d27&oe=57DDD120)
Post by: tony on Jun 01, 2016 at 01:01 PM
object of the test is to find out copper losses at various levels of primary currents,
this traffo will be supplying about 250 watts continuous power, that is why i made it big
with a core capable of 1000 volt amperes...
(https://scontent.fceb1-1.fna.fbcdn.net/v/t1.0-9/13346891_1141001309254835_2780305977935277878_n.jpg?oh=1ab3a5f736ba156296409e88fbc9d17c&oe=57C121F5)
(https://scontent.fceb1-1.fna.fbcdn.net/v/t1.0-9/13346483_1141001285921504_7496705068282290117_n.jpg?oh=1eb9e2729083049cdb073bf0012c30da&oe=57D71C24)
Post by: tony on Jun 07, 2016 at 06:55 AM
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13322025_1144265708928395_1411406902474860036_n.jpg?oh=d441d6c952d35ed6bfd6c1bd86d5bba8&oe=57C47876)
Post by: parasound on Jun 08, 2016 at 08:10 PM
Sent from my iPhone using Tapatalk
Post by: tony on Jun 09, 2016 at 06:08 AM
Clamp yan sir ah, pwede pa'ng DIY ng speaker
Sent from my iPhone using Tapatalk
yes, got those 3pcs for about 1000 pesos....
Post by: tony on Jun 17, 2016 at 08:07 AM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13434850_1150408344980798_8157303575181172801_n.jpg?oh=de300953f9aa4d89aa1693f44b87b126&oe=57DD9130)
Post by: tony on Jun 18, 2016 at 07:05 PM
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13419132_1151073021580997_4784928366911937825_n.jpg?oh=2c85a4f10a3d82468b87c6a385db20d2&oe=57E531F0)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13427791_1151163018238664_4796917565287242196_n.jpg?oh=7fe5959761767b3ee8946cedd2dea186&oe=57E7A14A)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13412991_1151073038247662_4001854566945960709_n.jpg?oh=38bdfe0976d045e7fd9192f930d11f60&oe=57DAFF8C)
Post by: tony on Jun 19, 2016 at 08:12 AM
remembering my late father on this day....
when he noticed that i was not wearing the wristwatch he gave me,
i told him it was broken and i did not want one anymore,
he told me anyone not mindful of the time is a lazy one, and he gave me a new watch......
i never won any arguments with him as a young man.....
but i guess that getting to be his age today makes me realize the wisdom behind those,
i just hope that i can be as good a father to my kids that he was to me...
Happy Fathers' day to all......
Post by: tony on Jun 22, 2016 at 08:51 PM
something i could only dream of while raising my kids....
big thanks to tita henry de mango of e-gizmo....
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13528755_1153742567980709_7645272183948233332_n.jpg?oh=b3a26f66a676e1c2095a4f03b9b59081&oe=57FD3BE3)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13516285_1153742587980707_4754023400586562376_n.jpg?oh=b393bb03b26d960f5c0ab63b9a023614&oe=580AC80E)
Post by: at_sunset_blvd on Jun 23, 2016 at 06:33 AM
what? good thing nagawi ako sa deeco sa raon kahapon and i got this for 1100 pesos, meron ding mas mura at 880...3500 sa watson's....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13434850_1150408344980798_8157303575181172801_n.jpg?oh=de300953f9aa4d89aa1693f44b87b126&oe=57DD9130)
Original to Master Tony? Great Memories
I could still remember my brother had this during the 70's & when his not around I would solder some tips of the speaker wire w/ the soldering lead to make it tough then also to some unuseful projects like a dozen red tiny bulbs (dont know if those were LED during that era) housed it in a tiny hard plastic box use to cover telephone connections then walah I have a level indicator or disco lights whatever you call it ;D (connected between the stereo & speaker), when the Bass beats the red lights lit up.
& sometimes I use it as a flashlight when looking for something in the cabinet ;D
Post by: tony on Jun 23, 2016 at 07:12 AM
everything is made in china i have no illusions that it is american made...
but it does a good job....
Post by: tony on Jun 25, 2016 at 09:01 AM
using mundorf coupling caps to the output stage replacing stock caps...
replaced old Alps round pot to new velvet blue Alps volume control..
biased to get 40 watts of plate dissipation per 6C33 output tube...
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13466311_1154990444522588_2496645974870440397_n.jpg?oh=f54d75e366f2adb6a09c3686060a8f54&oe=57C23AB8)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13512233_1154990514522581_2660884350154779689_n.jpg?oh=b4d002443d81e4a45fed9dededee1e6b&oe=580F9921)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13466409_1154990561189243_6658074908651757209_n.jpg?oh=8706b22dec01cb7b99380953e662f6ee&oe=580583C0)
i need a lot of dmm's....my fluke 87 can use cleaning.....
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13532859_1154990454522587_7864776154023770359_n.jpg?oh=3d3e396220a58860b189dc5df1d424f9&oe=58024008)
Post by: remington on Jun 25, 2016 at 10:17 AM
Post by: tony on Jun 25, 2016 at 10:40 AM
Nice! matutuwa na si dennis dyan master :)
happy birthday...
Post by: remington on Jun 25, 2016 at 11:10 AM
Post by: tony on Jun 29, 2016 at 08:12 PM
to 220 volts and brought back to life.,.....
power transformer redesigned for local mains voltage.,...
another unit is on deck waiting to get serviced....
(https://scontent-sea1-1.xx.fbcdn.net/v/t1.0-9/13502014_1158075174214115_6640199666578430453_n.jpg?oh=096e5742484212c3d4546b04e76975f7&oe=57FA65BB)
(https://scontent-sea1-1.xx.fbcdn.net/v/t1.0-9/13516571_1158075230880776_3993373896927779709_n.jpg?oh=13b286c54948393a87398d0c0f74c683&oe=57F2EC09)
(https://scontent-sea1-1.xx.fbcdn.net/v/t1.0-9/13506999_1158074574214175_7788846907682233588_n.jpg?oh=303ef2ee7b65bde974aaa7c0c86ed950&oe=580BE146)
Post by: tony on Jul 02, 2016 at 05:16 PM
wired 6L6 Pset driven by6BQ5 pentode at input.....
Rubber Soul, is one of my favorites from the Fab4.....
each 6L6 biased to about 15 watts of plate dissipation....
total power draw from the line is about 160 watts.....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13524488_1159775444044088_139216338445884804_n.jpg?oh=8c08796d78f144b2f7a4699c8e18484a&oe=5833E02F)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13567524_1159775350710764_304953741204268590_n.jpg?
oh=f06d10fc270e682e56f6e34957d411ce&oe=57F78734)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13494893_1159775430710756_747569863274265326_n.jpg?oh=882910bdb1364b1245be54e48345cfb2&oe=57F56B63)
Post by: tony on Jul 16, 2016 at 06:48 AM
owner is George Prudencio, he has a lot of ASL gears,
he sell those, pm me for his contact address of interested....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13669652_1168252579863041_1512335099367590721_n.jpg?oh=f43133bb2930f3d5cfbab664b80a9b7d&oe=58258729)
Post by: tony on Jul 16, 2016 at 07:41 AM
one is good for over a hundred watts(for testing equipment)
and the other for over 1kw of load power...
core is H50, 2 inch CL by 5 inch stack and weighs in a hefty 38 pounds...
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13709802_1168879923133640_4058183708055662702_n.jpg?oh=95c60bf135f593ad8e1b1b22131a8730&oe=57E878A7)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13707516_1168879936466972_2059186147380318943_n.jpg?oh=53f259911aa7097866aaa5128349e6f3&oe=583029C7)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13669746_1168880006466965_203460441510417071_n.jpg?oh=7e2ca50c0573b7708a9ece64f219fc77&oe=58298FC6)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13680701_1168880213133611_6196499744202274105_n.jpg?oh=02080cffb4c9b81de60bb1778a1c2e0c&oe=57F18DAD)
more pictures here....https://www.facebook.com/tony.tecson
Post by: tony on Jul 18, 2016 at 10:55 AM
looking for another group in mindanao to follow suit...
our FB network of techies are surely growing.....i am happy...;)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13707600_1236398876379506_1758533939962672329_n.jpg?oh=c087654fcdcdda362d6a5ad4338eeedd&oe=58339CC7)
Post by: ndotcom on Jul 20, 2016 at 07:25 PM
ASL 845 SET monoblocs.....for repairs....
owner is George Prudencio, he has a lot of ASL gears,
he sell those, pm me for his contact address of interested....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/13669652_1168252579863041_1512335099367590721_n.jpg?oh=f43133bb2930f3d5cfbab664b80a9b7d&oe=58258729)
Looks family sir Tony, musta po. Sana mapgana mo na rin yung dala ko dati ;)
Post by: tony on Jul 20, 2016 at 07:30 PM
Looks family sir Tony, musta po. Sana mapgana mo na rin yung dala ko dati ;)
marami pang kapatid yang dinala na yan, ako lang ang tumatanggi.....
meron na ngang nakaabang na kukuha...
yung pares mo, gagawin kong GM70....
Post by: oweidah on Jul 30, 2016 at 09:04 AM
Post by: tony on Jul 30, 2016 at 09:20 AM
happy birthday idol !
shokran sadik.....:D monday pa.....
Post by: oweidah on Jul 30, 2016 at 10:15 AM
Post by: tony on Jul 31, 2016 at 09:22 AM
fisher 400 receiver....https://www.facebook.com/greg.ramos.503/videos/10208522878963290/
Post by: remington on Jul 31, 2016 at 01:06 PM
Post by: tony on Jul 31, 2016 at 06:05 PM
advance happy birthday master! more b'days and more tubes to come!!!
thank you...
Post by: dana on Jul 31, 2016 at 07:23 PM
more tube amps, great health!
Post by: tony on Aug 01, 2016 at 07:21 AM
Happy Birthday PapaT!
more tube amps, great health!
thank you Don.....
Post by: ndotcom on Aug 01, 2016 at 08:01 AM
Good health and more builds, Cheers!
Post by: tetablanco on Aug 01, 2016 at 09:57 AM
Post by: choyb on Aug 01, 2016 at 10:04 AM
May you be blessed with many more healthy & happy years ahead!
Marami pong salamat sa mga advice! Mabuhay po kayo!
Cheers
Post by: tony on Aug 01, 2016 at 12:08 PM
Happy Birthday Sir Tony!
May you be blessed with many more healthy & happy years ahead!
Marami pong salamat sa mga advice! Mabuhay po kayo!
Cheers
i am 63 now, not too much time left, might as well give back
to those willing to learn....
Post by: dana on Aug 01, 2016 at 12:14 PM
baka maging presidente ka pa ng Pelepens ;D
Post by: choyb on Aug 01, 2016 at 12:35 PM
i am 63 now, not too much time left, might as well give backHa ha, as @dana said, batang bata pa 63 ngayon. Diba "50 is now the New 40" so left begins at 50 now!!!
to those willing to learn....
Cheers to you Master!
Post by: francism1980 on Aug 01, 2016 at 10:07 PM
Sent from my iPhone using Tapatalk
Post by: tony on Aug 02, 2016 at 07:26 AM
Ha ha, as @dana said, batang bata pa 63 ngayon. Diba "50 is now the New 40" so left begins at 50 now!!!
Cheers to you Master!
thank you, i keep myself busy so that my brains remain active....
i have over 3500 tubes to play around with and not so much time...
i hope to make the most of the time i have left...
Post by: tony on Aug 02, 2016 at 07:27 AM
Happy birthday po sir tony!
Sent from my iPhone using Tapatalk
thank you...
Post by: JojoD818 on Aug 03, 2016 at 10:16 AM
Post by: tony on Aug 03, 2016 at 12:11 PM
belated Happy Birthday Tony!
thank you jojo.....
Post by: kimmy_kimmy on Aug 03, 2016 at 02:40 PM
Post by: tony on Aug 03, 2016 at 06:04 PM
Belated Sir Ton
thank you....
Post by: ajayxyz11 on Aug 05, 2016 at 10:49 AM
Post by: tony on Aug 05, 2016 at 01:11 PM
Good morning sir, birthday nyo po pla nung 2, belated Happy Birthday sir!
thank you...
Post by: vhinx on Aug 05, 2016 at 01:17 PM
Post by: tony on Aug 05, 2016 at 01:21 PM
Ninong, Happy Birthday po...
thank you, friends pala kayo ni rey bumagat? at si jun montemayor?
galing dito si rey kanina, kinuha yung pioneer sa81 nya.....
Post by: parasound on Aug 05, 2016 at 01:24 PM
Sent from my iPhone using Tapatalk
Post by: tony on Aug 05, 2016 at 01:34 PM
Happy Birthday Sir Tony
Sent from my iPhone using Tapatalk
thank you sir...
Post by: tony on Aug 11, 2016 at 10:43 AM
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13934959_10154074871801144_8189419372965532114_n.jpg?oh=a2046f08899fa72cecc5a333b3cb384b&oe=5816F355)
Post by: jay2 on Aug 11, 2016 at 11:12 AM
Post by: tony on Aug 11, 2016 at 12:06 PM
Post by: parasound on Aug 11, 2016 at 04:52 PM
now this is the Raon that i remembered back then....
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/13934959_10154074871801144_8189419372965532114_n.jpg?oh=a2046f08899fa72cecc5a333b3cb384b&oe=5816F355)
Sent from my iPhone using Tapatalk
Post by: tony on Aug 14, 2016 at 08:30 AM
Magandang tignan Sir, malinis at maayos.
Sent from my iPhone using Tapatalk
Post by: tony on Aug 14, 2016 at 08:37 AM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7777_zpsxepkawwe.jpg)
Post by: tony on Aug 17, 2016 at 09:51 AM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7749_zpskcvi4la3.jpg)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7748_zpsrznthiw3.jpg)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7747_zpsjwvnbake.jpg)
Post by: tony on Sep 01, 2016 at 03:04 PM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14141695_1202210779800554_6627579279249759794_n.jpg?oh=f7a6967517157d612237afd288e7c016&oe=584CAA95)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14225357_1202210766467222_2484551884177392872_n.jpg?oh=7743bcd6164fbc9dd53e1871c8da7d89&oe=584819B8)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14184273_1202210776467221_3614724844655338332_n.jpg?oh=e06fba1c29f1c2e67105f1e97c29d617&oe=5856E7E7)
Post by: tony on Sep 04, 2016 at 05:22 PM
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/14212204_1204760819545550_6633378235646551109_n.jpg?oh=d41ffa29bc152d37b554346541d60433&oe=583E6341)
Post by: tony on Sep 05, 2016 at 06:10 AM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14117910_1073547592729265_7647222138045963595_n.jpg?oh=7050cd93c46a68bc2ebe8d004d618a07&oe=587C4C95)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14067494_1073547632729261_1343552695642159827_n.jpg?oh=0adbff7438709a5bbaf43cb54bd881b9&oe=584AC63D)
Post by: tony on Sep 05, 2016 at 11:14 AM
problem was red plating....converted to cathode resistor bias for trouble free operation from now on.....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14232991_1205435369478095_5139290414215974224_n.jpg?oh=3d120abc203097d03506146bc126ddb5&oe=587D228F)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14203161_1205435352811430_4726542858196426636_n.jpg?oh=cd8bc0c3a0c54b1b3ae9fec17f7c69c4&oe=584C323D)
Post by: tony on Sep 09, 2016 at 12:53 PM
new line amp comes to life, took me just 4 hours to conceptualize and build, a 6BC4 line amp...
http://www.nj7p.org/Tubes/…/Frank/049-RCA_Cuningham/6BC4.pdf
these babies (tube) can still be had for a dollar each....
i attached the schematics for those want to build their own,,,
B+ of 120 to 150 volts will work here, can be regulated as you desire....
you can ask your favorite tech to make one for you....
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/14192757_1208510945837204_2986955119533958963_n.jpg?oh=cff30e922eb9f40da7e7b7d2c0b48e52&oe=583E687A)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/14316724_1208510989170533_4500357917325266988_n.jpg?oh=81f4932b6a146bd5f80dda82755159f8&oe=587F489A)
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/14203314_1208511102503855_2458567737528142971_n.jpg?oh=f4d6d1c855a0298b4e7c6ba98f78ba45&oe=58809137)
initial testing is done by connecting the new amp in series with another line amp...
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/14192002_1208510982503867_1527478175894287499_n.jpg?oh=089f2e04231a432499a0a8bd00b2cb0f&oe=584B80E4)
with Antique Sound lab 6L6GC pp monoblocks...
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/14264102_1208511149170517_7381037901970729667_n.jpg?oh=464d1db7a037a3196916501b85f6188b&oe=58470026)
schematics....
(https://scontent.fmnl3-2.fna.fbcdn.net/v/t1.0-9/14199699_1208511205837178_3372367241870339247_n.jpg?oh=2ca98323dec7a19118abf0bea280fe75&oe=583870D4)
they are still available for a dollar each here....http://www.esrcvacuumtubes.com/dollar_days.html along with a lot of other tubes....
(https://scontent.fceb1-1.fna.fbcdn.net/v/t1.0-9/14233194_1089095277841163_6338779981560069686_n.png?oh=cacd3ac60be80c0949e20b44334f2702&oe=5843AB0C)
have fun.... ;D
Post by: tony on Sep 12, 2016 at 07:41 AM
transconductance of 10k umhos, and plate resistance of 4800 ohms
and mu of 48, figures that are very hard to ignore.....
try comparing these with the 12a^7 type tubes and get ready to get surprised........
they are still available for a dollar each here....
http://www.esrcvacuumtubes.com/dollar_days.html along with a lot of other tubes....
(https://scontent.fceb1-1.fna.fbcdn.net/v/t1.0-9/14233194_1089095277841163_6338779981560069686_n.png?oh=cacd3ac60be80c0949e20b44334f2702&oe=5843AB0C)
Post by: tony on Sep 12, 2016 at 08:15 AM
but first a clean up to restore to original design...
and the best input coupling cap is.....no cap.....
installed additional 470 ufd/400 volt filter caps....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7874_zpswsxdg3zd.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_7874_zpswsxdg3zd.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7875_zps0ux26c6o.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_7875_zps0ux26c6o.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7877_zpsdzvnwrzb.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_7877_zpsdzvnwrzb.jpg.html)
Post by: remington on Sep 12, 2016 at 09:55 AM
Post by: tony on Sep 12, 2016 at 12:34 PM
for sure masisiyahan ang pupuntahan nyang 6h8 master...it is a very good sounding pre amp!!!
and very quiet too...he is replacing the volume pot to an Alps Blue velvet,,,,,another diy'er...
Post by: tony on Sep 15, 2016 at 12:16 PM
still wrapped in cellophane, the box is unopened.......
there is a stripe that you pull out like in cigarette box....
so that once the cellophane wrapping is gone, the we do not know the history anymore....
i am not going to open these tubes for any reason, i want them to remain NOS...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7907_zpshrryctoc.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_7907_zpshrryctoc.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7909_zpsgggkazev.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_7909_zpsgggkazev.jpg.html)
Post by: tony on Sep 28, 2016 at 11:31 AM
(http://i5.photobucket.com/albums/y155/leoman53/6H23_TONY.jpg)
Post by: rochie on Sep 29, 2016 at 09:32 AM
Post by: tony on Sep 29, 2016 at 11:28 AM
that's a nice preamp Tony. might build that one after i finished my current project. I think i still have a traffo with that specs lying around the attic
yes, feel free to use it.....;)
Post by: tony on Sep 29, 2016 at 04:06 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7941_zpsm0lxqtd0.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_7941_zpsm0lxqtd0.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7942_zpscwhd5nva.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_7942_zpscwhd5nva.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7943_zpsllsgzoed.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_7943_zpsllsgzoed.jpg.html)
Post by: tony on Oct 02, 2016 at 07:24 AM
inspired by Stuart Yaniger's Impasse line amp....http://www.audioxpress.com/article/The-ImPasse-Preamplifier
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14522893_1229558633732435_662417874823127383_n.jpg?oh=f0a2262ee7e72c2c67a18dfedf33afed&oe=58AD61B4)
Post by: ajayxyz11 on Oct 02, 2016 at 10:17 AM
new 4KN8 line amps with balanced outputs......can be used to brdge poweramps...
inspired by Stuart Yaniger's Impasse line amp....http://www.audioxpress.com/article/The-ImPasse-Preamplifier
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14522893_1229558633732435_662417874823127383_n.jpg?oh=f0a2262ee7e72c2c67a18dfedf33afed&oe=58AD61B4)
Hi Sir Tony, similar ba with this yung gagawin nyo for me? Ang daming tubes.
Post by: tony on Oct 02, 2016 at 12:43 PM
Hi Sir Tony, similar ba with this yung gagawin nyo for me? Ang daming tubes.
yes,except that the casing is in all black....
Post by: choyb on Oct 02, 2016 at 02:40 PM
yes,except that the casing is in all black....WOW!
Sir Tony, what power amp will be used in this set up?
Regards
Post by: tony on Oct 02, 2016 at 04:51 PM
WOW!
Sir Tony, what power amp will be used in this set up?
Regards
any amp can use this preamp...
Post by: choyb on Oct 02, 2016 at 05:48 PM
yes,except that the casing is in all black....@ajayxyz11, congratulations in advance, with this preamp, i am sure it'll be an awesome system!
Post by: ajayxyz11 on Oct 03, 2016 at 07:29 AM
@ajayxyz11, congratulations in advance, with this preamp, i am sure it'll be an awesome system!
Thanks choyb! I'm really excited with this preamp.
Post by: tony on Oct 05, 2016 at 11:04 AM
Thanks choyb! I'm really excited with this preamp.
we're getting there......
Post by: tony on Oct 05, 2016 at 11:07 AM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14470523_1232036680151297_7470516751269686379_n.jpg?oh=df8fce8da3c73504da4379c970acc4e7&oe=58752A99)
looking to get 4 - 1000 watt 8 ohm dummy loads....like this one....
(http://g01.a.alicdn.com/kf/HTB1zlIzIFXXXXXPaXXXq6xXFXXX4/8-ohm-100-font-b-Watts-b-font-Non-inductive-Wirewound-Coated-Ceramic-Tube-font-b.jpg)
Post by: tony on Oct 07, 2016 at 05:49 PM
this is an old design with some design issues, that is why the main filter caps die after a time...
the main filter caps sits at around 1200 on startup, the two 450volt caps in series do not have long to live...
these amps are driven by my 6bc4 common cathode line amp....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14516473_1112391868844837_2172208964439591140_n.jpg?oh=7d1b9626b12d640c6192418fb178a547&oe=5865CD38)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14522881_1112391845511506_2055235309008440055_n.jpg?oh=365c9fa1be98a472fa9866382957155e&oe=5860D9FD)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14520456_1112391952178162_4210397506173962724_n.jpg?oh=20d8bce4aecd818632837afd5e0cabd2&oe=58687DC7)
Post by: ndotcom on Oct 09, 2016 at 09:20 AM
Post by: tony on Oct 09, 2016 at 10:11 AM
Sir tony yan na ba yun? :)
nope iba ini........pagawa ni George Prudencio.....;)
Post by: tony on Oct 11, 2016 at 07:34 AM
rated for 1500 VA, 230 volt input, 230 volts output completely isolated....
MOV's for anti line surge measure, toroid chokes and 2ufd filter caps gets rid of the emi and rfi...
(http://i5.photobucket.com/albums/y155/leoman53/diy%20isotraffo/IMG_7984_zpsvzqxdco1.jpg) (http://s5.photobucket.com/user/leoman53/media/diy%20isotraffo/IMG_7984_zpsvzqxdco1.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/diy%20isotraffo/IMG_7986_zpsdefsxahj.jpg) (http://s5.photobucket.com/user/leoman53/media/diy%20isotraffo/IMG_7986_zpsdefsxahj.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/diy%20isotraffo/IMG_7931_zpsru81qbr1.jpg) (http://s5.photobucket.com/user/leoman53/media/diy%20isotraffo/IMG_7931_zpsru81qbr1.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/diy%20isotraffo/IMG_7749_zpsrvcglpga.jpg) (http://s5.photobucket.com/user/leoman53/media/diy%20isotraffo/IMG_7749_zpsrvcglpga.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/diy%20isotraffo/IMG_7748_zpsbw2m9sut.jpg) (http://s5.photobucket.com/user/leoman53/media/diy%20isotraffo/IMG_7748_zpsbw2m9sut.jpg.html)
more porn here: https://www.facebook.com/tony.tecson/media_set?set=a.1248026165219015.1073741871.100000349293477&type=3¬if_t=like¬if_id=1477186307201248
Post by: tony on Oct 23, 2016 at 12:57 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8027_zpsecp0grew.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8027_zpsecp0grew.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8026_zpsixd1v2xq.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8026_zpsixd1v2xq.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8022_zpsvri53auh.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8022_zpsvri53auh.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8021_zpsv9rk8uf8.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8021_zpsv9rk8uf8.jpg.html)
Post by: ajayxyz11 on Oct 25, 2016 at 03:35 PM
coming soon.....6RHH2 balanced line ouput Impasse wanabe.....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8027_zpsecp0grew.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8027_zpsecp0grew.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8026_zpsixd1v2xq.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8026_zpsixd1v2xq.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8022_zpsvri53auh.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8022_zpsvri53auh.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8021_zpsv9rk8uf8.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8021_zpsv9rk8uf8.jpg.html)
Ang ganda sir Tony, kapareho ba ito ng para sa akin?
Post by: tony on Oct 26, 2016 at 08:40 AM
Post by: tony on Oct 31, 2016 at 08:16 AM
one power monitor, displaying the line voltage, current, power, and power factor at the same time....
two of dc voltage and current meters...for testing amplifiers..
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8034_zpsew4fezy0.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8034_zpsew4fezy0.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8035_zps20z9e0pn.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8035_zps20z9e0pn.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8036_zpsp3igzzkh.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8036_zpsp3igzzkh.jpg.html)
Post by: tony on Oct 31, 2016 at 06:38 PM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14937203_1258525794169052_6721236853636025377_n.jpg?oh=0130a06d6fe800c219a48cb5950684e7&oe=58A04C1E)
Post by: parasound on Oct 31, 2016 at 06:57 PM
now palying...6C33C OTL tube power amp...
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14937203_1258525794169052_6721236853636025377_n.jpg?oh=0130a06d6fe800c219a48cb5950684e7&oe=58A04C1E)
Sent from my iPhone using Tapatalk
Post by: tony on Oct 31, 2016 at 07:15 PM
Post by: tony on Nov 01, 2016 at 12:07 PM
Post by: tony on Nov 02, 2016 at 12:32 PM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14907592_1260509017304063_6186341308308620586_n.jpg?oh=663875248a36d0439a2c1e0697694346&oe=58D17D7D)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14956013_1260509117304053_6839581865813654490_n.jpg?oh=223c839ea36d84d2b09dee2e0e702f95&oe=589B9DE5)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14963209_1260509140637384_6447224510252653431_n.jpg?oh=7c879d10c9f1cca98de0f1c60b2ba5e8&oe=58A26651)
Post by: DPT on Nov 02, 2016 at 05:26 PM
Do you really need a high end speakers to use with tubes?
Or even with normal speakers you will notice a difference already?
Are all tubes pin compatible?
Post by: tony on Nov 02, 2016 at 05:45 PM
I have several questions before getting a cheap headphone tube amp as a entry into tubes?
Do you really need a high end speakers to use with tubes?
no.....but it depends in your listening tastes/habits, how loud you want your music,
how big is your listening room, and finally how deep is your wallet...
the key here is to audition, audition and audition....
do not listen to others, make your onw mind as to what makes you happy...
Or even with normal speakers you will notice a difference already?
not sure what ou mean.....my asdvise is to get a speaker system first, one that you
really enjoy listening to...then look for an amp to mate with it...
Are all tubes pin compatible?
no.....
Post by: tony on Nov 10, 2016 at 03:38 PM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15036445_1269047246450240_2569615528672540269_n.jpg?oh=f3e27cb5aa4d04eeee4d7eda21885b4a&oe=58CD6770)
Post by: jravacio on Nov 12, 2016 at 06:38 PM
(https://farm6.staticflickr.com/5446/30895597936_3f318be5e2_z.jpg)
Post by: mbtorn on Nov 12, 2016 at 07:21 PM
Had a chance to listen to your 6C33C OTL Amp @ Vals DIY bunker earlier. Excellent build, sparkling mids, and very smooth sounding. Congrats Tony! You were taking your lunch when I got there.
(https://farm6.staticflickr.com/5446/30895597936_3f318be5e2_z.jpg)
Totally agree. One of the best in this year's Hifi Show. Congrats to the group of Rm. 417.
Post by: ti on Nov 12, 2016 at 08:07 PM
Sent from my ASUS_Z017D using Tapatalk
Post by: tony on Nov 12, 2016 at 08:37 PM
a wrote a short whitepaper, giving the lowdown on the 6C33C OTL tube amp,,,,,,
6C33 OTL amp….a white paper
The single biggest factor that controls the sound of any tube power amp is its output transformer or OPT. Getting the correct OPT is the deal maker in any tube power amp, get it right and you get a very good sounding amplifier. While some will argue tubes, but tubes are easy, once you get your tube amp, it is very easy to replace tubes to get the flavor that you like; this is called tube rolling… To quote Tim de Paravicini, “it is all about the topology and the output transformer….” He after all was the designer of that legendary Luxman MB3045…
Let us look at the OPT for while, easily the single most expensive part of any tube power amplifier. You need the irons in the OPT to transfer energy i.e. from the output tubes to the speakers, since the impedances Involved are not the same, tubes being of high impedance and speakers of low impedances, OPT’s therefore are mandatory…There are a lot of physics involved in the design, and they are more often than not contradictory, and so design compromises have to made. To avoid low frequency saturation, the irons or the core have to be massive, but making the core massive increases leakage inductance and so high frequencies are severely attenuated. In other words the OPT is also the chink in the tube power amplifier’s armor….Designing and making them involved a lot of compromises, so that some call it more of an art than science….
What if the OPT is done away with altogether? Then we will not have to suffer the pitfalls of having an OPT in our tube power amps. Julius Futterman did just that publishing and article in 1954 and then in 1956...He also started building them by hand using the 6AS7 or 6080 tubes...Today, tubes like the Russian 6C33C are used and one design by Tim Mellows being built by audio builders all around the world. I made myself one such amp….the Russian 6C33C is very similar to the American 6336 tube...Other tubes that are used are the TV tube the PL504/6KG6, but other TV tubes like the 6LW6, and the 6LF6, etc. are equally as good to use in OTL amplifiers.
So I made a 6C33C power amp capable of 25 watts into an 8 ohm speaker and about 40 watts into 4 ohm speakers. Since there are no OPT’s the amplifier is now lighter, and frequency response is now better, all frequencies get amplified equally…this amplifier draws 350 watts at idle and about 400 watts at full power… Tony Tecson
Post by: tony on Nov 12, 2016 at 08:46 PM
Totally agree. One of the best in this year's Hifi Show. Congrats to the group of Rm. 417.
i also received text messages of congratulation, our team if very happy for the warm receptions,
all our efforts paid off, people were milling around to fill the room.......
Mandy Marino has been egging me to made him an OTL amp,,he pm'ed me at wiredstate asking me
even when i was still in russia.....his persistence softened me so after 6 years i relented...
Mandy being such a jolly person that he is, how can i not?
likewise, i am also happy to finally meet Brady Lucero from Cebu, Edrel, Brady and me
have know each other for a long time, exchaging notes as techies would do, trying to help each other out...
this is the most exciting show for all of us in a long time....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14980688_10154807694364382_1494328174283986704_n.jpg?oh=ca2c57a765b2b39f17b4f3d8d873c2ac&oe=58C54C90)
Post by: hennry sy on Nov 12, 2016 at 08:58 PM
Post by: tony on Nov 12, 2016 at 09:02 PM
Hi, Tony. Nice read on your OTL amp in today's Philippine Star, kakabilib group effort in THE DIY room.
thanks, the tube OTL amps have been around since 1954, and i know for a fact that there
are local tube diyers who made such amp using the 6as7 triodes.....
just that this is the first time i know of such amps shown in the audio show....
Kudos to Val Villanueva for putting up the team.....we are already looking at next;s years; show......
Post by: old_age on Nov 12, 2016 at 11:56 PM
Post by: tony on Nov 13, 2016 at 08:36 AM
i was there! ang daming tao sa room! way to go! congratulations!
thank you.....
Post by: at_sunset_blvd on Nov 13, 2016 at 09:02 AM
Congratz also to Boy, Cal, TROD!
I wasnt there, Sir Edrel just gave me a call.
Post by: tony on Nov 13, 2016 at 09:03 AM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8072_zpsdswslyrd.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8072_zpsdswslyrd.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8074_zpszyh5psgl.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8074_zpszyh5psgl.jpg.html)
Mandy Marino working on his lineat tracking tone arm...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8075_zpsbkts61k1.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8075_zpsbkts61k1.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8080_zpsmiyife4v.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8080_zpsmiyife4v.jpg.html)
1500 watt line conditioner and isolation transformer...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8078_zpsllz7rng8.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8078_zpsllz7rng8.jpg.html)
not afraid to show our backs..
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8077_zpsyf3oh9tp.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8077_zpsyf3oh9tp.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8079_zpsgmzez56y.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8079_zpsgmzez56y.jpg.html)
Post by: tony on Nov 13, 2016 at 09:06 AM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/14947668_1039968386129329_2903282244711078886_n.jpg?oh=537f32697c7334b4ad3c24f6eb8e40ad&oe=58C36D1B)
Post by: tony on Nov 13, 2016 at 09:12 AM
Congratz Master Tony ;)
Congratz also to Boy, Cal, TROD!
I wasnt there, Sir Edrel just gave me a call.
thank you, it just goes to show that local diy'ers can get together and put up a good show....
that we can work together harmoniously and the results whow in the final product...
Post by: tony on Nov 13, 2016 at 09:16 AM
that the Altec 414 woofer was his favorite...
i am also quite happy ang felt honored when Rene Rivo visiten
friday evening and after hearing the set-up shook my hands in approval...
Post by: old_age on Nov 13, 2016 at 09:42 AM
what is more noble other than creating a great sounding hardware is your unselfish deed in sharing your skills and knowledge. bihira ang ganyan. bow.
Post by: parasound on Nov 13, 2016 at 10:44 AM
Sent from my iPhone using Tapatalk
Post by: remington on Nov 13, 2016 at 12:19 PM
Post by: tony on Nov 13, 2016 at 07:35 PM
congrats to you and your team for putting up a good show master. gaganda ng mga creation nyo!
yes Jun, it was all about synergy and compatibility......we all knew what we wanted and how to get it....
credit goes to Val for getting the us together like a conductor in a symphony orchestra calling the shots...
i am forever grateful to Mandy Marino for not only moral byt financial support, sending money
even if i did not ask and how much......this helped me a lot in the completion of this amplifier.....
in the end, it was all about the comradery and the learning experience, yes, we also learned a lot...
one thing i am proud to say, our system was very quiet......., hum free and noise free, just like other commercial products,,,,
Post by: tony on Nov 13, 2016 at 07:36 PM
Congrats Sir Tony & DIyer group
Sent from my iPhone using Tapatalk
thanks, next year time your vacation at this times so you can come and see the show......
Post by: tony on Nov 13, 2016 at 07:40 PM
had a short talk with Joseph, his younger brother is my friend. your room is one of the faves among audiophiles yesterday.
what is more noble other than creating a great sounding hardware is your unselfish deed in sharing your skills and knowledge. bihira ang ganyan. bow.
yes, i even got text messages of congratulations......
my conversations with Joseph Esmilla was indeed very refreshing and productive...
it is always nice to converse with someone who thinks about tubes the same way....
I am also deeply gladdened with my first ever meeting with Brady Lucero of the Sierra Group,
like a long lost brother, Edrel and I had the best pleasure of talking with him....
Post by: parasound on Nov 13, 2016 at 07:44 PM
thanks, next year time your vacation at this times so you can come and see the show......
Sent from my iPhone using Tapatalk
Post by: tony on Nov 14, 2016 at 10:23 AM
Yes sir, yan talaga plano ko, the 1st and last time na maka attend was 2004 pa
Sent from my iPhone using Tapatalk
see you next year....
Post by: tony on Nov 14, 2016 at 10:30 AM
https://www.facebook.com/ryanbellido/videos/10209826042239211/
credit to Cal for his cables and interconnects,
to Val and John for tweaking the setup...
have to say buboy Sarte provided the life of the party, explaining to visitors what the system was all about...
thanks to kabubi for the early christmas gift of a quad of 6C33C tubes so i can start making a second unit...
the second unit will incorporate the lessons learned, mostly about power management....
Post by: dana on Nov 14, 2016 at 01:32 PM
Lahat ng Master Craftsman nandun ;D
Enjoyed them all: OTL 6C33/line conditioner- Tonyt's; the solid plinted Garrard tt (frm Mr Eloquent Kabubi), with self gliding linear tracker (Senor Mandy) -wow na wow; sexy speaker system(Larry); preamp from Ambel (?), solid audio rack from Boy B., cables frm Cal....
Niceness. Hats off.
:)
Post by: tony on Nov 14, 2016 at 02:09 PM
Post by: tony on Nov 15, 2016 at 07:16 AM
6C33c OTL amp in tandem whit Embel's EC8010. EC88 preamps using Hashimoto step up traffos....
according to Mandy Marino, unit was sold even before it was built....
it took 65 years for me to get vconvinced to do this amp....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15095121_10211291996994784_2427576291193005556_n.jpg?oh=5439d7aea49490d02a3b1e8f74e95371&oe=58CC0857)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15078975_10211291997274791_3498399104192508578_n.jpg?oh=8af5a6b1dfb3db9c52200ea5d685ec8d&oe=58BFF792)
vintage Garrard turntable with linear tracking tonearm....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15032146_10211291932553173_6039727498990299922_n.jpg?oh=c3262ee46284dae06e615b2da0bf5165&oe=58CDD25A)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15073324_10211291932193164_6257857324412169201_n.jpg?oh=baba152615029c3f7db90f20bc22cdb8&oe=58BD27C8)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15085656_10211291932393169_6411181117493419939_n.jpg?oh=a7915e39b7b42414156c00704ad57df5&oe=58C45C36)
Post by: tony on Nov 15, 2016 at 07:50 AM
i came home with a quad of these to make a second OTL to incorporate improvements
that we learned at the show....many thanks to kabubi, Tony Buboy Sarte for the tubes, i owe you one...
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15036318_1274102272611404_1143579888769000606_n.jpg?oh=9aff2f983d5db17fe34e582b66b00095&oe=588EC43F)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15079101_1274102325944732_3749406342679452258_n.jpg?oh=9befc11b5e049ee3936b3a442755c98a&oe=588ED93F)
i put the tubes inside of cartons until ready to install......
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15078731_1274102292611402_5736730246232472057_n.jpg?oh=ad3fd252f863477a325448524db7f319&oe=5891B108)
Post by: dana on Nov 16, 2016 at 11:38 AM
http://www.philstar.com/modern-living/2016/11/12/1642794/its-time-show
The Philippine STAR and AudioFile are again collaborating in this year’s November Hi-Fi Show to showcase the best of locally made audio system.
Like previous exhibits, all electronics and transducers are locally handcrafted.
The show will be held on Nov. 12 and 13 at the Dusit Thani Hotel Makati from 10 a.m. to 6 p.m. You can visit us at room 417 to experience that elusive sound magic which we promise to deliver. Entrance, as always, is free.
Unlike past years, however, we’ll be featuring what could probably be the first amplifier to be successfully DIYed in the Philippines. This is something we are truly proud of, since many have tried but failed to build one.
Our main offering for the 2016 November Hi-Fi Show is the 6C33 OTL or transformer-less amplifier. OTL is a subset of vacuum tube audio power amplifier topologies. Output transformers (OPT) have been a fixture in conventional amplifiers for linearity and fidelity. The transformers we grew up with rely on OPTs to couple the amplifier’s output stage to the loudspeaker.
The single biggest factor that controls the sound of any tube power amp is the OPT. Having a correctly built OPT ensures a vibrant-sounding stereo system. In any tubed amplifiers, OPT is the lifeline. Build it right, and you’ll get an excellent-sounding amplifier.
Some believe that tube components are what make or break the sound quality of an amplifier. But tubes can be procured effortlessly. New production tubes and those new-old-stocks populate the audio marketplace. Audiophiles call it tube rolling. If they can’t get the sound right in a particular brand of vacuum tube, all they have to do is to replace them to get the musical flavor that fits their sound preference. To quote Tim de Paravicini, the maker of the legendary Luxman MB3045: “It is all about the topology and the output transformer” … or so it seems.
Why then will we be taking the risk of building an amp sans its transformer?
Tony Tecson, who built our transformer-less amp, says: “The output transformer is easily the single most expensive part of any tube power amp. You need the irons in the OPT to transfer energy: that is, from the output tubes to the speakers. Since the impedances involved are not the same — tubes being of high impedance and speakers of low impedances — OPTs therefore are mandatory. To avoid low frequency saturation, the irons or the core have to be massive. But making the core massive increases leakage inductance, so high frequencies are severely attenuated. In other words, the OPT is also the chink in the tube power amp’s armor.”
Tony explains that doing away with the OPT altogether means avoiding these pitfalls. “This is why I built a 6C33C power amp capable of 25 watts into an 8-ohm speaker and about 40 watts into 4-ohm speakers. Since there are no OPTs, the amplifier is now lighter, frequency response is better, and all frequencies get amplified equal. This amp grows 350 watts at idle, and about 400 watts at full power.”
Our pre-amplifier and phono stage, on the other hand, have been conceived and constructed by Erik Flores. His Isabel pre-amplification system needs no further proof of how excellent its sound is. Through years of participating in the Hi-Show, Erik has proven his worth as an expert DIYer.
Our speaker system, built by the ever-reliable Larry Roxas, is a three-way configuration using Altec 414 woofers, Altec 802G mid-compression drivers with modified Le Cleach horns and EV T35 tweeters. The whole transducer system is seamlessly linked by a crossover in the first order slope, or 6db per octave. The speaker cabinet can either be used as bass reflex or open baffle.
No other acoustician can approximate the work of Tony Rodriguez. He will again treat the hotel’s music-hostile room environment to match our system’s sound quality.
The audio rack is specially designed by Boy Bustamante using exotic hardwood.
Our cables and inter-connects were designed and fabricated by audio stalwart Cal Cano, while overall room tuning will be done by John Alegre, one of our team’s mainstays.
Of course, our participation in this year’s Hi-Fi show’s staging will not be possible without the supervision and direction of environmentalist Mandy Mariño, and mining executive Antonio “Buboy” Sarte. Another highlight of our exhibit is Mandy’s linear-tracking tonearm on a Garrard 301 turntable, which will be the subject of my future column.
Post by: CoolTOYZPH on Nov 16, 2016 at 11:47 AM
Post by: tony on Nov 16, 2016 at 12:42 PM
Congratulations!
thanks,
@Don,
this is also a demonstration of cooperation amongst local aficionados, if we put our heads together,
we can do great....
John Allegre, Val Villanueva tweaked the system for best sound...
Buboy Sarte was the biggest revelation, his skills at salesmanship was highlighted in the show.....
Post by: Cjtjader on Nov 17, 2016 at 11:43 AM
It is my pleasure to hook up my diy cables on your very nice sounding OTL amp to complete the system of Larry's 3way speakers, Eric's smooth sounding pre-amp and Señor Mandy's majestic Garrard TT and diy linear tone arm. It was a weekend full of fun and revelations. Mabuhay ka, Tony!
Post by: tony on Nov 17, 2016 at 01:08 PM
Hi Tony,
It is my pleasure to hook up my diy cables on your very nice sounding OTL amp to complete the system of Larry's 3way speakers, Eric's smooth sounding pre-amp and Señor Mandy's majestic Garrard TT and diy linear tone arm. It was a weekend full of fun and revelations. Mabuhay ka, Tony!
i had a blast....thanks also for your participation, we all blended seamlessly....
every one who left the room were in all smiles, that is priceless...
Post by: tony on Nov 18, 2016 at 10:25 AM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15055840_1277158328972465_4190223322042574712_n.jpg?oh=224a81e9fe6f833468f2fba14a95f6e8&oe=58BA0FE1)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15095583_1277158318972466_4158939568713544456_n.jpg?oh=a5033856ca3e398bfa16848049803d9d&oe=588CFE74)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15085514_1277158315639133_6750906759719512410_n.jpg?oh=1f31b64e2d0132990241abd52b8e362a&oe=588EEDF3)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15073459_1277158465639118_8712246374682115614_n.jpg?oh=d65e96e706eba7dc83244b5262efa605&oe=58D49A06)
never enough, two more dmms, i now have ten dmms.....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15078694_1277158585639106_758660042036681092_n.jpg?oh=06113d9049986d657812f246dcdcc5fc&oe=58BB7AF7)
Post by: tony on Nov 23, 2016 at 01:37 PM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15193444_1283118748376423_4119698904574470446_n.jpg?oh=11f997ef43978f0844cdc968bdb8678c&oe=58D1CB1A)
Post by: tony on Dec 03, 2016 at 10:19 AM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-0/s480x480/15284192_1297840490237582_7970581824609055336_n.jpg?oh=0b3b5a98f94f6bdac4b90973d4cb9b4a&oe=58B625FB)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15230775_1297840476904250_8530753746132055377_n.jpg?oh=6cffa2afa2e45a25e197e5ad4d274aa9&oe=58BF6F9A)
Post by: tony on Dec 08, 2016 at 05:58 PM
nangungulit na.....he wants me to make him a DHT phono stage....
this is going to be an even harder challenge....after 10 months ulit...;)
my DHT tubes....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15400347_1307655719256059_352111531209726050_n.jpg?oh=88d50de10e82835782e35611a3c8ea16&oe=58F65A4E)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15355786_1307655722589392_8174681039373515912_n.jpg?oh=39dd5795f9438efaadd04ccab3f93491&oe=58C02D2C)
Post by: parasound on Dec 08, 2016 at 06:13 PM
after the tube OTL challenge, Mandy has a nother one for me.....
nangungulit na.....he wants me to make him a DHT phono stage....
this is going to be an even harder challenge....after 10 months ulit...;)
my DHT tubes....
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15400347_1307655719256059_352111531209726050_n.jpg?oh=88d50de10e82835782e35611a3c8ea16&oe=58F65A4E)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15355786_1307655722589392_8174681039373515912_n.jpg?oh=39dd5795f9438efaadd04ccab3f93491&oe=58C02D2C)
Sent from my iPhone using Tapatalk
Post by: tony on Dec 16, 2016 at 12:42 PM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15590594_1317077548313876_9055780904438955273_n.jpg?oh=43b4fcb5fb1e5342592d00931c693987&oe=58B5BE2F)
Post by: tony on Dec 18, 2016 at 07:56 AM
i am making a traffo with 6inch stack....for a high power high fidelity power amp......
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8156_zps7kbrdd1b.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8156_zps7kbrdd1b.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8155_zpsjdouhspf.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8155_zpsjdouhspf.jpg.html)
2 x 20mm holes for leadouts....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8162_zpsndxzdgpi.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8162_zpsndxzdgpi.jpg.html)
Post by: JojoD818 on Dec 18, 2016 at 10:57 AM
there is a metalworks shop along T. Alonzo (opposite side of Aranque) that uses plasma welding machine, I haven't been there for years but it's an old establishment so maybe it's worth looking at if you are in the vicinity. the last time I went there was a large stainless Toyota logo hanging in front of their shop. if they are still there (I don't know their shop's name), you probably won't miss it, it's the only machine/metalworks shop in that side of Aranque. I'm sure they can patch up, modify existing or even fabricate end bells easily.
Post by: tony on Dec 18, 2016 at 12:34 PM
been with them for more than 20 years now...
i know that shop you mentioned, just across the street....
those endbells will go to Bell Metals for a bright zinc dip,
electo plating costs me 50 pesos per kilo, so this one costs 50 pesos to
plate......and then to Uni-Pacific for powder coating...
guess i am lucky those shops are all in Pasig so i do not
have to travel far...
Merry Christmas to you and family, this year is a very good year
for me in spite of the difficulties, we overcome and move
forward....
Post by: tony on Dec 20, 2016 at 10:15 AM
next stage, powder coating, textured black is my favorite for traffo end bells...
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15622078_1320907127930918_3142284121149994735_n.jpg?oh=55459418bbbb3f8e1098f3b5e22717af&oe=58B39392)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15622585_1320906684597629_6438452302956966372_n.jpg?oh=d94cd18fec5942ffe992616daee53c58&oe=58E59DEF)
Post by: painted_black on Dec 20, 2016 at 12:00 PM
thanks Jojo...i go to Unity Metals for my chassis needs...
been with them for more than 20 years now...
i know that shop you mentioned, just across the street....
those endbells will go to Bell Metals for a bright zinc dip,
electo plating costs me 50 pesos per kilo, so this one costs 50 pesos to
plate......and then to Uni-Pacific for powder coating...
guess i am lucky those shops are all in Pasig so i do not
have to travel far...
Merry Christmas to you and family, this year is a very good year
for me in spite of the difficulties, we overcome and move
forward....
sir Tony
Merry Christmas
Pwede po bang malaman kung saan yung Bell Metals?
Thanks
Post by: tony on Dec 20, 2016 at 12:20 PM
from rotonda ng pasig, dr. sixto antonio going towards rosario in pasig, at the villa susana, right after the rizal high school...747-5662, 474-2335
Post by: tony on Dec 22, 2016 at 12:59 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8176_zpsudx0lsny.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8176_zpsudx0lsny.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8177_zpstqiybozk.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8177_zpstqiybozk.jpg.html)
6P15P pentode mode pp amp...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8180_zpsa95lgtuo.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8180_zpsa95lgtuo.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8178_zpsiiwvs7pw.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8178_zpsiiwvs7pw.jpg.html)
Post by: parasound on Dec 22, 2016 at 03:42 PM
6L6GC ultralinear pp amp....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8176_zpsudx0lsny.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8176_zpsudx0lsny.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8177_zpstqiybozk.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8177_zpstqiybozk.jpg.html)
6P15P pentode mode pp amp...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8180_zpsa95lgtuo.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8180_zpsa95lgtuo.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8178_zpsiiwvs7pw.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8178_zpsiiwvs7pw.jpg.html)
Sent from my iPhone using Tapatalk
Post by: painted_black on Dec 22, 2016 at 10:06 PM
thanks..... Bell Metalcraft at 20 A. Quiogue st. Caniogan, Pasig City
from rotonda ng pasig, dr. sixto antonio going towards rosario in pasig, at the villa susana, right after the rizal high school...747-5662, 474-2335
Thanks sir Tony
Post by: tony on Dec 23, 2016 at 07:11 AM
selector switch is incorporated...
Nice Amp sir, I'm sure masaya ang Christmas & New Year ng owner niyan
Sent from my iPhone using Tapatalk
Post by: ajayxyz11 on Dec 25, 2016 at 09:36 AM
Post by: tony on Dec 25, 2016 at 10:25 AM
Happy Holidays sir Tony!
thanks, i am having issues with tube sockets and i am looking
for more suitable ones, also rethinking the design and tubes to use,
i am contemplating 12au7's for availability....but the topology has been decided.....SY has given me the thumbs up....
merry christmas...
Post by: ajayxyz11 on Dec 27, 2016 at 02:58 PM
thanks, i am having issues with tube sockets and i am looking
for more suitable ones, also rethinking the design and tubes to use,
i am contemplating 12au7's for availability....but the topology has been decided.....SY has given me the thumbs up....
merry christmas...
Wow Sir in the making na po ba ang sa akin? Looks like Happy ang coming new year for me.
What's the reason for choosing the 12au7 tube for this line amp sir? This has a lower gain than the like 12ax7 or 12at7 tube diba sir? What is the advantage in this type of tube sir?
Post by: tony on Dec 28, 2016 at 07:45 AM
Wow Sir in the making na po ba ang sa akin? Looks like Happy ang coming new year for me.
What's the reason for choosing the 12au7 tube for this line amp sir? This has a lower gain than the like 12ax7 or 12at7 tube diba sir? What is the advantage in this type of tube sir?
availability is the single biggest reason....
gain is still 20db as against 26 db for the other tube...
Post by: ajayxyz11 on Dec 28, 2016 at 12:43 PM
availability is the single biggest reason....
gain is still 20db as against 26 db for the other tube...
Good to know its easy to replace tubes. Thank you sir Tony, Happy New Year po.
Post by: tony on Dec 28, 2016 at 03:11 PM
these caps are huge to use on a Kimmel OTL's but a bit small for a high power SS amp...:D
i mean capacity, not the physical side, these are 70mm diameter caps...
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15726666_1327940713894226_8154125748320698056_n.jpg?oh=3a7c86f386a8ba3ef737d26de655f952&oe=58EC6D82)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/15780838_1327940710560893_5285931933676497878_n.jpg?oh=c3673497a60365a467ab457aba620ed1&oe=58E1AB1F)
Post by: tetablanco on Jan 01, 2017 at 04:14 PM
So I can use both 2A3 and 5894 SET tube amps which I got from you, I bought an A-B amp switcher that allows me to connect and switch between as many as six amps to the same set of speakers. This is what I got:
http://www.ebay.com/itm/191587663098?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Based on our discussions before, I remember you saying that tube amps should always have a speaker load before switching it on. Since the A-B switcher switches between two active amps, switching between amps necessarily disconnects one active amp from the speakers. Is this safe? The product description of the A-B switcher states: "Protection circuitry safely guards unselected amps or speakers." Really appreciate your guidance on this.
Thanks,
Teta
Post by: tony on Jan 01, 2017 at 05:09 PM
december, can not get myself to do any diy work....
this week i will try to recover by doing what i do in the month
of january, that is wind several transformers, hopefully that will
give me back inertia and recover bearings.....
as long as there is no input to any power amp without
speaker loads, then it is safe....
what is dangerous to the amps with output transformers
is when there is signal input and the speakers gets disconnected...
another reason to go OTL...... 8)
Happy New Year, Master Tony!
So I can use both 2A3 and 5894 SET tube amps which I got from you, I bought an A-B amp switcher that allows me to connect and switch between as many as six amps to the same set of speakers. This is what I got:
http://www.ebay.com/itm/191587663098?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Based on our discussions before, I remember you saying that tube amps should always have a speaker load before switching it on. Since the A-B switcher switches between two active amps, switching between amps necessarily disconnects one active amp from the speakers. Is this safe? The product description of the A-B switcher states: "Protection circuitry safely guards unselected amps or speakers." Really appreciate your guidance on this.
Thanks,
Teta
Post by: tetablanco on Jan 01, 2017 at 05:24 PM
holiday cheers Teta, i felt burned out in the last weeks of
december, can not get myself to do any diy work....
this week i will try to recover by doing what i do in the month
of january, that is wind several transformers, hopefully that will
give me back inertia and recover bearings.....
as long as there is no input to any power amp without
speaker loads, then it is safe....
what is dangerous to the amps with output transformers
is when there is signal input and the speakers gets disconnected...
another reason to go OTL...... 8)
Hi Tony, thanks for your quick reply.
My setup will be as follows:
MULTIPLE SOURCES -> 12SL7 / 12SN7 PREAMP -> Y SPLITTER -> 2A3 / 5894 SET AMPS -> A-B SWITCHER -> FR SPEAKERS.
From the foregoing setup, there is always a signal coming from the PREAMP and into the 2 TUBE AMPS via the Y SPLITTER. The 2 TUBE AMPS are then connected to the A-B SWITCHER which then switches between the signal coming from 2 TUBE AMPS to the FR SPEAKERS. Since the A-B SWITCHER supposedly has Protection Circuitry, would my setup in any way damage the amps which are always being fed by the PREAMP?
Thanks,
Teta
Post by: tony on Jan 02, 2017 at 06:50 AM
Post by: tony on Jan 05, 2017 at 12:44 PM
1 3/4 inch center leg, stacked to 4 inches, and weighs in at 12kgs...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8192_zpsm4pvb7yi.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8192_zpsm4pvb7yi.jpg.html)
winding electrostatic shields...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8193_zps3hpt12wo.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8193_zps3hpt12wo.jpg.html)
sun drying after soaking in electrical varnish...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8195_zps9q42oxim.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8195_zps9q42oxim.jpg.html)
finished traffo...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8200_zpsblndej2k.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8200_zpsblndej2k.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8198_zpsxt3v9hlu.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8198_zpsxt3v9hlu.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8209_zpsvgjaw2gs.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8209_zpsvgjaw2gs.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8199_zpsmmaf9c7t.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8199_zpsmmaf9c7t.jpg.html)
Post by: tony on Jan 05, 2017 at 01:00 PM
generator, converting it to 220 volts, and replacing old
ecaps with film types....
traffo converted to 220 volts, psu rewired for
voltage doubler configuration....
power inlet converted to a fig-8 type......
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8205_zpsj6n4ooxc.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8205_zpsj6n4ooxc.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8204_zpsknt98pxm.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8204_zpsknt98pxm.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8203_zps06nbxqao.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8203_zps06nbxqao.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8206_zpskwjpvh0f.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8206_zpskwjpvh0f.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8207_zpsorscjubt.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8207_zpsorscjubt.jpg.html)
Post by: tony on Jan 05, 2017 at 01:03 PM
and to Rey Bumagat for getting the item for me....
Post by: tony on Jan 06, 2017 at 08:36 AM
Post by: tony on Jan 20, 2017 at 12:05 PM
about Tim Mellows OTL....http://www.diyaudio.com/forums/tubes-valves/204960-new-tim-mellows-otl-project-14.html#post4957956
just the other day, i wanted to do a 6336 pp power amp,
then i had a thought, an OTL will just need a power traffo and
no OPT's.....so quess what? i am making one.....;)
Post by: tony on Jan 24, 2017 at 04:56 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8217_zpsfpvis1af.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8217_zpsfpvis1af.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8218_zpsmeasj7a4.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8218_zpsmeasj7a4.jpg.html)
Post by: ajayxyz11 on Jan 25, 2017 at 11:53 AM
12AU7 line amp with balanced outputs....malapit na....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8217_zpsfpvis1af.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8217_zpsfpvis1af.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8218_zpsmeasj7a4.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8218_zpsmeasj7a4.jpg.html)
Yipee! I'm excited to test this Sir Tony!
Post by: tony on Feb 03, 2017 at 10:46 AM
so a voltage selector at the back is added....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8234_zps8i1icxkz.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8234_zps8i1icxkz.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8235_zpsv7yv79or.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8235_zpsv7yv79or.jpg.html)
Post by: tony on Feb 03, 2017 at 10:47 AM
Yipee! I'm excited to test this Sir Tony!
two weeks pa, power soaking and debugging on going....
Post by: tony on Feb 03, 2017 at 10:48 AM
you will be missed....
Post by: tony on Feb 15, 2017 at 04:39 PM
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8256a_zpsd7nblg4b.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8256a_zpsd7nblg4b.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8254_zpszrasz12m.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8254_zpszrasz12m.jpg.html)
Post by: geriboy on Feb 15, 2017 at 05:10 PM
Post by: tony on Feb 15, 2017 at 06:11 PM
Post by: choyb on Feb 15, 2017 at 06:46 PM
Yipee! I'm excited to test this Sir Tony!Wow. Congratulations aJay!
Next ako ha ha!
Post by: geriboy on Feb 15, 2017 at 06:48 PM
naka power on without any signal....i plan to soak it for 60 to 80 hours total, only after that will i get to listen to it...
Ah ok. Maraming salamat!
Post by: ajayxyz11 on Feb 16, 2017 at 09:28 AM
naka power on without any signal....i plan to soak it for 60 to 80 hours total, only after that will i get to listen to it...
Ayus Sir Tony, parang burn in narin ba ito, does it consume as much elctricity as when its playing with source?
Post by: audi on Feb 16, 2017 at 11:24 AM
Post by: tony on Feb 16, 2017 at 12:22 PM
Ayus Sir Tony, parang burn in narin ba ito, does it consume as much elctricity as when its playing with source?
power consumption is about 40 watts, with or without signal...
Post by: tony on Feb 18, 2017 at 03:01 PM
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/16807211_1260348694049153_2960565804019265257_n.jpg?oh=a92c5a255d3f5e2a203dbe92fdb0e03b&oe=5933ACDE)
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/16807295_1260348667382489_5457607419957522555_n.jpg?oh=31e9525bc6eefeea8256f4433e009bed&oe=59475B15)
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/16807640_1260348660715823_4323248580347968713_n.jpg?oh=269166ffeebac44969ce8e91d6901236&oe=5931F424)
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/16832238_1260348740715815_4688856120734336492_n.jpg?oh=63564f3f3f7a95ddf9d19939b97fd996&oe=593FFAC4)
Post by: tony on Feb 18, 2017 at 03:03 PM
Ayus Sir Tony, parang burn in narin ba ito, does it consume as much elctricity as when its playing with source?
update....the preamp has logged 50 hours now, getting there, i listened to it briefly paired with my dny40w power amp....and......;)
:D
24 more hours and you can come pick ot up....
Post by: rochie on Feb 18, 2017 at 03:19 PM
update....the preamp has logged 50 hours now, getting there, i listened to it briefly paired with my dny40w power amp....and......;)
:D
24 more hours and you can come pick ot up....
ohh speaking of DNY40W, I forgot to tell you I still have a few more kits here. PM na lang ulit :D :D :D
Post by: tony on Feb 18, 2017 at 03:25 PM
ohh speaking of DNY40W, I forgot to tell you I still have a few more kits here. PM na lang ulit :D :D :D
yes rochie, i will be getting two pairs more.....
this PAS preamp was a revelation, someone brought a simmilar unit to me a couple of years back, i told him to sell it......i was wrong.....
if i can have a unit like this, it will be a keeper.... :D
Post by: ajayxyz11 on Feb 20, 2017 at 08:51 AM
update....the preamp has logged 50 hours now, getting there, i listened to it briefly paired with my dny40w power amp....and......;)
:D
24 more hours and you can come pick ot up....
Naku that winking eye smiley adds excitement to me sir Tony, looking forward sir.
Post by: tony on Feb 20, 2017 at 08:58 AM
Post by: tony on Feb 24, 2017 at 07:45 AM
i designed this amp to use a 12ax7 voltage amp and 6SN7 long tail phase splitters, but i ended up with the 5814 voltage amp and 6SL7 long tail phase splitters instead....
i found the latter combo gave me the intended results i was after...
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/16864766_1385230031498627_2368063364060427425_n.jpg?oh=951d2e7904a98f0a811ccd322a575662&oe=592FD817)
Post by: tony on Feb 25, 2017 at 07:58 AM
wired up the heaters for all tubes and power draw comes down to 160 watts. so that 80 watt power budget for the 4 output tubes add up to 240 watts....that is a 100 watt lower than in the 6C33 case....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8287_zpswfenzx15.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8287_zpswfenzx15.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8286_zpsdncxcjcn.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8286_zpsdncxcjcn.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8285_zpsnxv62jem.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8285_zpsnxv62jem.jpg.html)
Post by: ajayxyz11 on Feb 27, 2017 at 08:15 AM
^definitely this week, feb 22....
Sir Tony I'm very happy with this line amp, beautiful SQ, transparent open sounding & really fast. I preferred using the balance connection. As expected napuyat sa pakikinig hehe ;D
Thank you very much sir!
Post by: karipas on Feb 27, 2017 at 12:06 PM
this PAS preamp was a revelation, someone brought a simmilar unit to me a couple of years back, i told him to sell it......i was wrong.....
if i can have a unit like this, it will be a keeper.... :D
Hi Sir Tony, I am currently scouting for a tube pre-amp to match my current tube-amp. Design wise will you recommend the PAS2 over a PAS3?
I have not yet heard these 2 models mentioned and solely banking on reviews and recommendations. Thanks.
Post by: tony on Feb 27, 2017 at 12:14 PM
so the best thing to do is to examine carefully any unit you may want to buy before paying for it...
Hi Sir Tony, I am currently scouting for a tube pre-amp to match my current tube-amp. Design wise will you recommend the PAS2 over a PAS3?
I have not yet heard these 2 models mentioned and solely banking on reviews and recommendations. Thanks.
Post by: Cjtjader on Feb 27, 2017 at 01:23 PM
Kamusta na?.... Anong design.ang ginamit mo dun sa.pre amp na dala mo last Nov Hifi show that utilizes 2 peanut tubes? I remembered it sonics as very dynamic with your OTL amp... 8) Cheers!....
Post by: tony on Feb 27, 2017 at 01:55 PM
Hi Tony,
Kamusta na?.... Anong design.ang ginamit mo dun sa.pre amp na dala mo last Nov Hifi show that utilizes 2 peanut tubes? I remembered it sonics as very dynamic with your OTL amp... 8) Cheers!....
common cathode, 6BC4 another tv tube....
(http://i5.photobucket.com/albums/y155/leoman53/IMG_7829_zpsoouytc8v.jpg)
Post by: rochie on Feb 27, 2017 at 02:01 PM
question lang sa mga dynaco kits especially the ST-35. how the sonic of this amp? and the build difficulty? is it worth it to build or hanap na lang ng ibang design that utilises the same el84 tube?
Post by: Cjtjader on Feb 27, 2017 at 02:05 PM
Regards,
Cal
Post by: tony on Mar 02, 2017 at 04:33 PM
6rhh2 input voltage amp tube, 6SL7 long tail phase splitter
voltage doubler psu genarating 400v B+ loaded...
90 watt power consumption, psu has high power factor...
still tweaking for the low frequency wobble in one channel...
but already sounds good....
(http://i5.photobucket.com/albums/y155/leoman53/832_829b_5894%20pp%20amp/IMG_8301_zpsobdbirsg.jpg) (http://s5.photobucket.com/user/leoman53/media/832_829b_5894%20pp%20amp/IMG_8301_zpsobdbirsg.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/832_829b_5894%20pp%20amp/IMG_8303_zps6iaft1fh.jpg) (http://s5.photobucket.com/user/leoman53/media/832_829b_5894%20pp%20amp/IMG_8303_zps6iaft1fh.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/832_829b_5894%20pp%20amp/IMG_8299_zpsroo8wmd3.jpg) (http://s5.photobucket.com/user/leoman53/media/832_829b_5894%20pp%20amp/IMG_8299_zpsroo8wmd3.jpg.html)
Post by: tetablanco on Mar 10, 2017 at 12:02 AM
832, 829b, 5894 pp amp now playing.....
6rhh2 input voltage amp tube, 6SL7 long tail phase splitter
voltage doubler psu genarating 400v B+ loaded...
90 watt power consumption, psu has high power factor...
still tweaking for the low frequency wobble in one channel...
but already sounds good....
(http://i5.photobucket.com/albums/y155/leoman53/832_829b_5894%20pp%20amp/IMG_8301_zpsobdbirsg.jpg) (http://s5.photobucket.com/user/leoman53/media/832_829b_5894%20pp%20amp/IMG_8301_zpsobdbirsg.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/832_829b_5894%20pp%20amp/IMG_8303_zps6iaft1fh.jpg) (http://s5.photobucket.com/user/leoman53/media/832_829b_5894%20pp%20amp/IMG_8303_zps6iaft1fh.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/832_829b_5894%20pp%20amp/IMG_8299_zpsroo8wmd3.jpg) (http://s5.photobucket.com/user/leoman53/media/832_829b_5894%20pp%20amp/IMG_8299_zpsroo8wmd3.jpg.html)
My next Master Tony tube amp? :)
Post by: tony on Mar 10, 2017 at 07:26 AM
Post by: tony on Mar 10, 2017 at 08:25 AM
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/17202700_1399340110087619_8272758507525043263_n.jpg?oh=34a1e60b34b92e161e5aed85a5cb19bb&oe=5935DD12)
to those interested, this amp is a single ended amp capable of at least 20 watts of output power....power dram from meralco is around 170 watts...
topology of this amp is like these: 6SN7 srpp voltage amp input stage, buffered by a paralleled section 6SN7 cathode follower feeding another 6SN7 active loaded voltage amp that feed the 845 grid, the 845 is fixed bias at around 80mA for an idle dissipation of around 80 watts...
you might be wondering what the 6L6gwb and the 6sl7 tubes are doing there, well, they are a voltage regulators that supplied low impedance power to the 3 6SN7's...the 6L6gwb is the series pass element and the 6sl7 tube is the error amplifier using a zener voltage reference at its cathodes..
in the course of repairing this amps, i found out that there were 3 coupling caps in the signal path, compared to the original published schematics with only two, so i investigated and found out that the second stage cathode follower were converted to cascaded cathode follower to justify a third cap....i have never seen such a practice before and can not see any logic behind it, so i simply restored the amp to its original configuration....done away with one cap and a power resistor...
imho, the 2nd stage 6sn7 cathode followers can be taken out altogether i do not see any compelling reason for putting it there except to say that Antique sounds might have truckloads of 6sn7's....but hey, this is not my amp so i will just let it be...
sorry for the long post.... :)
Post by: audiojunkie on Mar 10, 2017 at 10:51 AM
I'm thinking that my amp SET GTA SE40 it could have similarity in topology that also using two 6sn7 at input and three 6L6GC or 5881 output, adjustable bias up to 640mV and can output 40w stereo or 80 mono.
Post by: tony on Mar 10, 2017 at 12:23 PM
for starters gain of 845 is only about 4 while the 6L6gc is around 8.....
to push the grids of the 845 you will need more than 60 volts peak of signal drive, whereas for the 6L6gc you can get by with kjust 20...
needless to say, they are not the same...as drive requirements are
not the same...
Nice post and amps sir Tony...
I'm thinking that my amp SET GTA SE40 it could have similarity in topology that also using two 6sn7 at input and three 6L6GC or 5881 output, adjustable bias up to 640mV and can output 40w stereo or 80 mono.
Post by: audiojunkie on Mar 10, 2017 at 01:03 PM
6L6GC or 5881 is far easier to drive than an 845,
for starters gain of 845 is only about 4 while the 6L6gc is around 8.....
to push the grids of the 845 you will need more than 60 volts peak of signal drive, whereas for the 6L6gc you can get by with kjust 20...
needless to say, they are not the same...as drive requirements are
not the same...
Thanks sir Tony . . sa explanation.. Dagdag kaalaman from tube master....
I read back your previous post, I overlooked to note that the 6L6 and 6sn7 only act as regulator not the power tubes.
Post by: tony on Mar 10, 2017 at 01:44 PM
Post by: tony on Mar 10, 2017 at 04:10 PM
and sticking another one in....
tubes are certainly more than that.....a whole lot more....:D
tube journey rolls along, no end in sight just as yet...
Post by: audiojunkie on Mar 10, 2017 at 05:27 PM
Can I post PCB picturre sir Tony?
Post by: tony on Mar 10, 2017 at 05:44 PM
Post by: audiojunkie on Mar 10, 2017 at 05:58 PM
PCB layout from online group (highlighted parts to be replaced)
Upgraded board:
(http://i196.photobucket.com/albums/aa316/ram_on/AV-NL/Gta-se40/image_zpsezutwgnu.jpg)
Top
(http://i196.photobucket.com/albums/aa316/ram_on/AV-NL/Gta-se40/image_zpsrcregymn.jpg)
Bottom
Thanks for the permission...
Post by: tony on Mar 10, 2017 at 06:01 PM
(http://i39.tinypic.com/14ky1y1.jpg)
Post by: audiojunkie on Mar 10, 2017 at 06:02 PM
Post by: tony on Mar 10, 2017 at 06:02 PM
Post by: audiojunkie on Mar 10, 2017 at 06:06 PM
Post by: tony on Mar 10, 2017 at 06:20 PM
Post by: audiojunkie on Mar 10, 2017 at 06:34 PM
says who? if parts can not take it they burn out...
Common experienced ng mga owners, the amp will work but evenly will start to show abnormal functions and typical affected parts. So decided to update than fix the problem if something happen atleast I'm assured it's on top condition. Isa pa, can use other tubes.
(http://i196.photobucket.com/albums/aa316/ram_on/AV-NL/Gta-se40/image_zpswtpjvnux.jpg)
Stock board before upgrade.
Post by: tony on Mar 10, 2017 at 07:42 PM
that is why owners need to learn a minimum of maintenance...
as you know, i am not into boutique parts that many audiophiles like,,
to me, if you can not justify as to how and why, then better not do it...
many are stuck on the what of things......
Post by: audiojunkie on Mar 11, 2017 at 03:08 AM
I agree that not all boutique parts cost not always equate to level of improvement if there is.
Back to amp diagram, can I get your opinion and is it possible to use kt66 tube?
Post by: tony on Mar 11, 2017 at 09:54 AM
to put in parts that are not suitable, they must know what they
were doing...
having said this, parts do fail although unintentional,
such is the nature of tube amps...during the production
life cycle of this amp, revisions upon revisions will happen,
all are aimed to improve performance...
and if i were you i will never take what others say about this amp,
what matters most is what your experience is with yours...
Common experienced ng mga owners, the amp will work but evenly will start to show abnormal functions and typical affected parts. So decided to update than fix the problem if something happen atleast I'm assured it's on top condition. Isa pa, can use other tubes.
(http://i196.photobucket.com/albums/aa316/ram_on/AV-NL/Gta-se40/image_zpswtpjvnux.jpg)
Stock board before upgrade.
Post by: tony on Mar 11, 2017 at 10:08 AM
kt or kinkless tetrode, so called was
to circumvent the american patent on beam tetrodes
that the 6L6gc and siblings belong to...
https://en.wikipedia.org/wiki/KT66
so go ahead and use it....
thing about biasing is to get all three tubes at the same cathode currents, when paralleling tubes, it is important to get tubes that
are well matched at the operating point, and bias pots are provided for this purpose....
so how do you bias them?
the plate dissipation for the tube is your limit,
say your tube can do 30 watts, for reasonable tube life,
we do not want to run then at full 30 watts, 80% is a reasonable
target or 24 watts..
then knowing your plate voltage, you can adjust bias to get
your cathode current set...
say your plate voltage is 300 volts, so at 24watts, this means
80ma...
you may also follow recommended factory settings...
as for me, i will not bias the kt66 at more than 60mA cathode current, 40-50 is just fine...
That's why I'm trying to learn the bias adjustment without assistance from a tech.
I agree that not all boutique parts cost not always equate to level of improvement if there is.
Back to amp diagram, can I get your opinion and is it possible to use kt66 tube?
Post by: audiojunkie on Mar 11, 2017 at 11:37 AM
Many thanks sir Tony for your opinions and a very nice explanations on bias setting. From manufacturer recommendation 640mV but from other owners suggested to set at 610-615mV only, don't know it's equivalent in mA.
Post by: tony on Mar 11, 2017 at 12:36 PM
cooler running tubes lasts longer....
higher bias means hotter tubes, and probably better sounding,
but tube life can be shorter....
so you have a choice....
640mv/11 ohms (cathode resistor) = 58 mA just about right imho..
610/11 = 55mA......
not too much of a difference from factory settings..
the thing is to be able to set the bias at a lower setting
without degrading performance or sound quality...
also lower bias settings lowers power output somewhat,
but heck a 2 to 3 watts power difference in not audible,
you will not miss it...
Many thanks sir Tony for your opinions and a very nice explanations on bias setting. From manufacturer recommendation 640mV but from other owners suggested to set at 610-615mV only, don't know it's equivalent in mA.
Post by: audiojunkie on Mar 11, 2017 at 12:51 PM
Post by: tony on Mar 11, 2017 at 01:34 PM
Post by: tony on Mar 11, 2017 at 01:36 PM
Post by: tony on Mar 12, 2017 at 07:21 AM
Thanks ulit sir Tony ... Great infos and saved all these in my notes pad. :)
if you look at the schematics, each output tubes have an 11 ohm 1% small resistors at the cathodes, these resistors served
two purposes, one. to use a bias monitoring ports, and the other as protection for the amp in case of output tube failure,
these resistors will fail as an open circuit without letting the magic smoke out...
so you see, there are reasons why designers put components in, it would be very helpful to find out why they do it...
Post by: tony on Mar 15, 2017 at 12:29 PM
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-0/s480x480/17342624_1405613579460272_1928748819720120049_n.jpg?oh=86a3c5f5dcf0d710fe6f6dcceb2c5348&oe=596CFCDE)
Post by: at_sunset_blvd on Mar 15, 2017 at 08:28 PM
or repairing a pair of ASL AQ-1006, i was paid a quad of 8045's, what do you think?
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-0/s480x480/17342624_1405613579460272_1928748819720120049_n.jpg?oh=86a3c5f5dcf0d710fe6f6dcceb2c5348&oe=596CFCDE)
NOS, I mean brandbew yan Master Tony? If yes, then it paid you well for your expertise ;)
Post by: audiojunkie on Mar 16, 2017 at 03:14 AM
if you look at the schematics, each output tubes have an 11 ohm 1% small resistors at the cathodes, these resistors served
two purposes, one. to use a bias monitoring ports, and the other as protection for the amp in case of output tube failure,
these resistors will fail as an open circuit without letting the magic smoke out...
so you see, there are reasons why designers put components in, it would be very helpful to find out why they do it...
Thanks again sir Tony for the great info...
Those are the resistors replaced with new ones, with your input means each tube is individually equipped with it as circuit breaker. Looking at the schematic, now realized that I missed to replace one tube each channel. There was a misunderstanding in the instruction manual. It says r25-r27 and r43-r45 to other side. I emailed sonic craft to clarify if r26 &r44 are inclusive but didn't get clear response, instead very generalized statement. That's the reason why I was left with two extra resistors of 11ohms. I think, need to rectify this ASAP.
Post by: tony on Mar 16, 2017 at 08:27 AM
NOS, I mean brandbew yan Master Tony? If yes, then it paid you well for your expertise ;)
i still have to test them in an actual circuit, but i am glad to have my hands on them, i could only read them in magazines...
now they are right here in my hands...
and audiophile who passed left them in the care of his son, and thought i should have them...
Post by: tony on Mar 16, 2017 at 08:33 AM
and i encourage people to know about them..
i also have unhappy experiences with those so called high end tube vendors, it seems they go missing just when you need them...
i had this push pull 300b amp that had one channel not working, so i asked them for some info...it never came,
so what i did was to trouble shoot, who would have thought
that a 10 watt 0.56 ohm resistor could fail?
just get those cathode resistors reading all the same
and you will be fine...
Thanks again sir Tony for the great info...
Those are the resistors replaced with new ones, with your input means each tube is individually equipped with it as circuit breaker. Looking at the schematic, now realized that I missed to replace one tube each channel. There was a misunderstanding in the instruction manual. It says r25-r27 and r43-r45 to other side. I emailed sonic craft to clarify if r26 &r44 are inclusive but didn't get clear response, instead very generalized statement. That's the reason why I was left with two extra resistors of 11ohms. I think, need to rectify this ASAP.
Post by: tony on Mar 16, 2017 at 08:58 AM
a sign of of microphonicity of the tube....5814
since there is only one gain stage in that line amp,
you can try swaping the middle tubes to any of the front and rear tubes and see it that helps, you may also replace
that middle tube with another type of 12au7...
just be carefull, the sockets are tight..
wrt to the low grequency rumble, it is a sign of psu resonance, bring the amp in first week of April..
Good evening Sir Tony, ask ko lang po kung hindi na ba mawawala or mababawasan yung parang white noise when i turn on the power amp? Its not a hum, its more like a white noise. That was the first i've noticed when i first use it pero i was thinking it may go away din siguro after maburn in. The white noise like sound is constant hindi humihina or lumalakas when i the volume up or down, just constant & napansin ko ang speaker drivers are also constantly moving na parang something is sucking inside. Is that normal, will that go away after sometime? I tried removing the RCA just turn on without source or signal but its the same. Pag tahimik sa loob ng room medyo noticeable ang sound. Please advise.
Thank you,
Jay
Post by: tony on Mar 17, 2017 at 07:54 PM
preview the another may eyeball of diy'ers....
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/17353603_1607314549283611_2243807412012179597_n.jpg?oh=83ef7d368bfc4088194f6682df078878&oe=592BCCB5)
Post by: ajayxyz11 on Mar 20, 2017 at 03:24 PM
what you call white noise could be in fact tube hissing,
a sign of of microphonicity of the tube....5814
since there is only one gain stage in that line amp,
you can try swaping the middle tubes to any of the front and rear tubes and see it that helps, you may also replace
that middle tube with another type of 12au7...
just be carefull, the sockets are tight..
wrt to the low grequency rumble, it is a sign of psu resonance, bring the amp in first week of April..
Sir, I tried swapping the tubes but the white noise is still there just the same. volume-wise it didn't decrease or increase. I wasn't able to try changing the tube with other 12au7.
Post by: Nelson de Leon on Mar 20, 2017 at 04:48 PM
surprise visit from my elab and fb friends.....
preview the another may eyeball of diy'ers....
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/17353603_1607314549283611_2243807412012179597_n.jpg?oh=83ef7d368bfc4088194f6682df078878&oe=592BCCB5)
Master Tony!!!! Pro hitler ka na din...? :-[ :-[ :-[
;D ;D ;D ;D ;D ;D ;D
Post by: tony on Mar 20, 2017 at 05:19 PM
Master Tony!!!! Pro hitler ka na din...? :-[ :-[ :-[
;D ;D ;D ;D ;D ;D ;D
Post by: tony on Mar 20, 2017 at 05:20 PM
Sir, I tried swapping the tubes but the white noise is still there just the same. volume-wise it didn't decrease or increase. I wasn't able to try changing the tube with other 12au7.
Post by: tony on Mar 25, 2017 at 07:12 PM
for a line conditioner i am building, 1000volt ampere capacity...
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8389_zpszogvnvmp.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8389_zpszogvnvmp.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8391_zpsgaadyvvf.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8391_zpsgaadyvvf.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8392_zpsxkn1spnd.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8392_zpsxkn1spnd.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8393_zpsbovbgba8.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8393_zpsbovbgba8.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8394_zpsnddxyxdd.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8394_zpsnddxyxdd.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8395_zps1uvok9ac.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8395_zps1uvok9ac.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8396_zpsobjdezwm.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8396_zpsobjdezwm.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/IMG_8397_zpstjqyo8rs.jpg) (http://s5.photobucket.com/user/leoman53/media/IMG_8397_zpstjqyo8rs.jpg.html)
Post by: tony on Apr 28, 2017 at 07:00 AM
triode pentode tubes......what to do with over 400 of these? line amps, phono preamps, tone controls, a lot of other uses, it will be a shame to just put them in landfills....
the 6AN8 for example has its triode is quite similar in characteristics with the 12au7 and if you triode connect the pentode side, then can find its place as a Foreplay line amp....may even sound better in pentode follower due to lower output impedance...and if you want a higher gain, there is the 6BL8...
still if you want a substitute for the 12ax7, then there is the 6LX8,,,,
Post by: audiojunkie on Apr 28, 2017 at 11:27 AM
Post by: tony on Apr 28, 2017 at 11:43 AM
Post by: audiojunkie on Apr 28, 2017 at 12:05 PM
i have over 3500 tubes in my stash....
That's really a lot.... Is it for personal consumption only? 😊
Post by: tony on Apr 28, 2017 at 12:56 PM
That's really a lot.... Is it for personal consumption only? 😊
some i sell, some i give away......a lot others for my use, but they are mostly tv tubes, no one else wants....:D
Post by: tony on Apr 28, 2017 at 01:42 PM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/18198484_1458934174128212_8097071609014117534_n.jpg?oh=eeddfb16c94b03d1d1b609284d59b009&oe=59938167)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/18119221_1457898967565066_7844769548895879051_n.jpg?oh=2ecd022df4a1a2e1a37857b86fc12540&oe=59887EF1)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/18118655_1457899604231669_1299553274553551697_n.jpg?oh=26b691113ae74cf4665e8897da12117a&oe=597D90CD)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/18194099_1457900347564928_4732008777092224135_n.jpg?oh=82f881fb89393571e933b6a051e33be5&oe=59BFC96A)
Post by: lithium_deuteride on Apr 28, 2017 at 07:59 PM
Post by: tony on Apr 29, 2017 at 07:25 AM
What kind of tubes are those Mang Tony?
the 1624's? they are direct heated beam tetrodes.....https://frank.pocnet.net/sheets/049/1/1624.pdf
Post by: tony on Apr 30, 2017 at 08:22 AM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/18157856_1460728167282146_1983446327910141109_n.jpg?oh=d4ee418c312158fee549c896548efe64&oe=59845121)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/18157333_1460727473948882_905876827224702667_n.jpg?oh=b97ad2545a918d3a365e9d2fe659676a&oe=59914258)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/18194587_1460728347282128_8987449022294693384_n.jpg?oh=38f990b2aab00b7951ef16ee80529189&oe=59795604)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/18157350_1460728433948786_8341851051146310571_n.jpg?oh=b2fd077deb0ba5fdf5f4626492deaf29&oe=597D552F)
Post by: tony on May 08, 2017 at 10:33 AM
(http://i5.photobucket.com/albums/y155/leoman53/832_829b_5894%20pp%20amp/IMG_8300_zpswnhrcr5c.jpg) (http://s5.photobucket.com/user/leoman53/media/832_829b_5894%20pp%20amp/IMG_8300_zpswnhrcr5c.jpg.html)
(http://i5.photobucket.com/albums/y155/leoman53/832_829b_5894%20pp%20amp/IMG_8510_zpswl2ys1sk.jpg) (http://s5.photobucket.com/user/leoman53/media/832_829b_5894%20pp%20amp/IMG_8510_zpswl2ys1sk.jpg.html)
(http://[img width=800 height=608]http://i5.photobucket.com/albums/y155/leoman53/832_829b_5894%20pp%20amp/IMG_8512_zpskpqyat1k.jpg)
final configuration...
(http://i5.photobucket.com/albums/y155/leoman53/832_829b_5894%20pp%20amp/IMG_8512_zpskpqyat1k.jpg)
(http://i5.photobucket.com/albums/y155/leoman53/832_829b_5894%20pp%20amp/IMG_8305_zpsbyanyyzh.jpg)
Post by: tony on Jul 20, 2017 at 08:11 AM
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/20246359_1549854805036148_187073122619204809_n.jpg?oh=d313ac4f45f15b36ce441a7034414a58&oe=5A0D8D1D)
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/20228840_1549854751702820_5978068899720771862_n.jpg?oh=37650e1ab1f7142be45d6d9d07f0ad30&oe=5A0761DB)
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/20155696_1549852505036378_232511599795839903_n.jpg?oh=92f961f2d975c3f8fcb59d6631da6a1e&oe=59F4BB4A)
nibbling tool attachment to cut out rectangular holes.....
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/20228418_1549854745036154_1391923522478448989_n.jpg?oh=fc432994018a870406fed6985c00033c&oe=5A08C540)
Post by: parasound on Jul 20, 2017 at 11:45 AM
Sent from my iPhone using Tapatalk
Post by: tony on Jul 20, 2017 at 11:48 AM
Nice chassis Sir Tony..
Sent from my iPhone using Tapatalk
yes, a 2mm thick aluminum sheet...
Post by: tetablanco on Aug 01, 2017 at 09:22 AM
Post by: parasound on Aug 01, 2017 at 12:53 PM
Sent from my iPhone using Tapatalk
Post by: dana on Aug 01, 2017 at 01:01 PM
Post by: painted_black on Aug 01, 2017 at 03:04 PM
Post by: jjlovemusic on Aug 01, 2017 at 03:06 PM
Post by: ndotcom on Aug 01, 2017 at 08:06 PM
Post by: at_sunset_blvd on Aug 01, 2017 at 09:29 PM
Post by: tony on Aug 30, 2017 at 08:51 AM
the shaft can carry heavier coils....
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/21192126_1592128017475493_65898121828257237_n.jpg?oh=559d2173a4cd0cd8c38da11535eb0ea7&oe=5A29CE08)
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/21191914_1592128007475494_7539222876840216046_n.jpg?oh=46f78b3e1d11b137fb078a24343626dc&oe=5A1B0CA7)
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/21151533_1592127997475495_5561221799536864648_n.jpg?oh=31b4c953a71812218ddbe6ee7008f1a9&oe=5A56A0F4)
Post by: tony on Aug 31, 2017 at 11:49 AM
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/21192018_1593165120705116_9070826159245042794_n.jpg?oh=c6279a236d25d35832f193b55711036a&oe=5A1AD058)
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/21192897_1593165047371790_8440033997702509210_n.jpg?oh=20e1ddd1242ba27c92a0aa3ac57243a8&oe=5A5B89E0)
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/21150284_1593164940705134_2942727364159346333_n.jpg?oh=b918c31e75f32b0de66b999ebff66f7b&oe=5A580517)
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/21191938_1593164990705129_395322738347097693_n.jpg?oh=503d463eab017a00c9532ed07ca59272&oe=5A124968)
Post by: parasound on Aug 31, 2017 at 12:48 PM
Sent from my iPhone using Tapatalk
Post by: CoolTOYZPH on Aug 31, 2017 at 01:48 PM
Post by: tony on Aug 31, 2017 at 02:04 PM
Post by: tony on Sep 17, 2017 at 09:18 AM
inspired by the Cebu group, Fi Do Dido, Kahibulongan Tribes, Juan Dela Cruz III et al.....i made my own FTC testing rig...even has a digital thermometer to monitor ambient temperature...measures power input to amplifier, two ac voltmeters, are now operational, two dc meters with current displays need power supplies, contemplating on whether to use 9 volt battery or an ac powered dc supply...
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/21739951_1605826762772285_2472598090685110512_n.jpg?oh=9ca46a945481b8b849c8bde94da220e4&oe=5A5AA7DA)
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/21731004_1605826782772283_4137495556269845477_n.jpg?oh=629efb56a1ca72afceb5a2a2b2c6eb17&oe=5A5F9BBC)
Post by: dana on Sep 17, 2017 at 09:24 AM
next, pls share/show some measurements you made...
Post by: tony on Sep 17, 2017 at 09:25 AM
nice papaT.
next, pls share/show some measurements you made...
will do...
Post by: tony on Oct 07, 2017 at 02:19 PM
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/22228191_1630189560336005_8718658850836729201_n.jpg?oh=e5d5e263ed4714ef1a4d38853837b559&oe=5A875E16)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/22281946_1630189557002672_1366321084413749939_n.jpg?oh=79ff5e126a649389f20e233060e740cf&oe=5A4A93B5
[img]https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/22281946_1630189557002672_1366321084413749939_n.jpg?oh=79ff5e126a649389f20e233060e740cf&oe=5A4A93B5)
(https://scontent.fmnl3-1.fna.fbcdn.net/v/t1.0-9/22196088_1630189520336009_6332306061243892610_n.jpg?oh=5da68a5ffaf98bbb8ed11607b2e5cbe8&oe=5A494F5A)
Post by: CoolTOYZPH on Oct 07, 2017 at 02:42 PM
Post by: tony on Oct 15, 2017 at 07:48 AM
two in the middle have balanced outputs...can be used to bridge solid state amps...
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/22308861_1512518265498860_2621847223874114489_n.jpg?oh=d5a83496ce72163dcb60d916853d84ad&oe=5A3B90F0)
Post by: tony on Dec 03, 2017 at 07:00 AM
the Tabor clone is not yet ready, maybe next year,.....
(https://scontent.fmnl6-1.fna.fbcdn.net/v/t1.0-9/24174336_10214914010942869_1311635436940505809_n.jpg?oh=2377a26931f79189f6e693b9a7310d85&oe=5AC7F601)
Post by: tony on Dec 03, 2017 at 07:26 AM
painted the main filter cap grey, installed new illuminated switch,
fixed the local cap board, replaced the alps control with a new one and installed gold colored knob....then 3mm acrylic plastic bottom plate.....
(https://scontent.fmnl6-2.fna.fbcdn.net/v/t1.0-9/22885874_1654398301248464_6805840468994970674_n.jpg?oh=b4ab65f7aff9375c699157d0819dd75e&oe=5A6E875C)
Post by: ndotcom on Dec 07, 2017 at 11:28 AM
Post by: tony on Dec 08, 2017 at 05:55 PM
Sir Tony baka may spare D3A pa yung may ari nyan o kaya ay pasabay ako pag magparating sya dito. Umpisahan ko na ulit 2A3 ko by January.
i am sure Teta will read this.....
i am building another one in 2018...
Post by: tony on Jan 28, 2018 at 07:00 PM
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/26994064_1748445995177027_8299469690619466999_n.jpg?oh=dde16926b75037a8458cda477e3aebda&oe=5ADA2DF5)
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27459161_1748445961843697_9056490587644567373_n.jpg?oh=90b2a479e22f11a75e5acd0ba52be63c&oe=5B22F58C)
Post by: tony on Jan 30, 2018 at 05:51 AM
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27073352_1749656058389354_5802057272507929440_n.jpg?oh=589b09c4a9b0e4565be5d78b97c637c1&oe=5AEBC380)
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27072348_1749656018389358_3232520431353405177_n.jpg?oh=c427d2aa95bc502eb838d7b56c9ad448&oe=5B1970CE)
Post by: tony on Jan 30, 2018 at 04:43 PM
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/22406295_1515996435151043_5269068565570703307_n.jpg?oh=be4b13165e2559de9ad6fcf8e9493ed5&oe=5B26A6DA)
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/22406193_1515996425151044_1998072866073758675_n.jpg?oh=f5201abfc274829a21be818bd9fd1fe5&oe=5B1EE112)
Post by: parasound on Jan 30, 2018 at 05:31 PM
13GB5 pp amp in a Radford25 topology, 6BN11 dual pentode LTP and 6922 input voltage amp....
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27073352_1749656058389354_5802057272507929440_n.jpg?oh=589b09c4a9b0e4565be5d78b97c637c1&oe=5AEBC380)
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27072348_1749656018389358_3232520431353405177_n.jpg?oh=c427d2aa95bc502eb838d7b56c9ad448&oe=5B1970CE)
Sent from my iPhone using Tapatalk
Post by: tony on Jan 30, 2018 at 07:16 PM
for power traffos, carbon fibers are good for heat radiation...
Post by: tony on Feb 05, 2018 at 06:26 PM
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27544738_1757309577624002_2671035695358570907_n.jpg?oh=e9368d3dd4fdf0119774fc2172e44c7d&oe=5B23372B)
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27540885_1757309550957338_4538086179213763901_n.jpg?oh=b0f2ba642a9a856e6ba9e49d2767051e&oe=5B1EC3CD)
Post by: parasound on Feb 06, 2018 at 07:23 AM
Sent from my iPhone using Tapatalk
Post by: tony on Feb 06, 2018 at 07:41 AM
6sn7 line stage, with vsps phono stage...this is a full function preamp..
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27654357_1760261653995461_7800305758103573780_n.jpg?oh=bebb64c8d95f2be767dfce1d785f462d&oe=5B251DD6)
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t34.0-12/27399950_1749667245054902_1899137121_n.jpg?oh=40e075f41351f7ec8192e12bbea6e300&oe=5A7B4E11)
Post by: tony on Feb 10, 2018 at 09:09 AM
one of the many collaborations of local pinoy into diy...
more collaborations coming...a real boost for the local diy'ers...
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27751505_1761473243874302_469859632651382241_n.jpg?oh=5b81c5dd92479127b92fd48a05b45e2d&oe=5AD860CC)
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/26991859_1686797254723937_383280010599202980_n.jpg?oh=8a3d15c1477ad5331d36996a911718d8&oe=5B0B921A)
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27654821_1616935401725330_5512000550471252179_n.jpg?oh=32568db3a5cc4f4e6084d544c4f39d09&oe=5B2650D7)
Post by: kayee on Feb 10, 2018 at 05:43 PM
thanks
Post by: tony on Feb 11, 2018 at 07:58 AM
sir tony 1 pc is for 2 speaker na use nito...
thanks
yes, i included you in the second batch of group buys..we are 55 boards and counting...
Post by: JojoD818 on Feb 11, 2018 at 10:47 AM
I suggest a future iteration to include another pnp transistor with emitter at the junction of r10 and r11 and collector to ground. Base drive should be a 10K resistor and a 1uf across ground. Input of this pnp transistor should come from one of the AC supplies of the power transformer, assuming everything is common ground. Once power is cut, this pnp transistor immediately routes the junction of r10/r11 to ground therefore depriving the relay transistors of base voltage asap and turning the relay off.
That should guarantee the relay to open up before any nasty noises from the amp can go through.
Just my two cents.
Cheers
Post by: tony on Feb 11, 2018 at 11:44 AM
btw, Arnel came up with a honey badger iteration with 8 pairs of output trannies, and SOA protection on a daughter board and is optional...we call it, "Musang" amplifier...
Post by: JojoD818 on Feb 11, 2018 at 10:08 PM
i'm stuck with the Leach amp at the moment, breaking in my MarkAudio drivers. the Honey Badger hasn't seen much action lately. i'd like to try some of those iterations in the future maybe when I get more time.
Post by: JojoD818 on Feb 11, 2018 at 10:26 PM
(https://i.imgur.com/CyyhrRr.png)
the pnp transistor can be any small signal types. I see they use the 2N5401, that should work well. AC1/AC2 is tapped at the main transformer's secondary directly. when power is turned off, C6 (100uf cap at the junction of R10/R11) is immediately discharged to ground through D3, R3 and T1.
now, if you don't want to mess too much with the stock board (I know I wouldn't), another way to increase your turn off speed is as I mentioned above to reduce C5 to about 47uf, then parallel a diode (1N4148 or 1N4007 will do, or whatever is laying around) with R10. this will provide a discharge path for C6 (the turn-on delay capacitor) during turn off and will tremendously improve the cut off time of the relay. ;)
Post by: tony on Feb 12, 2018 at 06:11 AM
Post by: JojoD818 on Feb 12, 2018 at 08:36 AM
Post by: tony on Feb 19, 2018 at 08:09 AM
before upgrade...
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27867478_1770241466330813_6658334517776334303_n.jpg?oh=b12f33b57a197dda7ed7d0e1597a71b7&oe=5B4D64C5)
after...
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/27868001_1770241586330801_259514207055311398_n.jpg?oh=93e8abbd371702467a9392e154bf6b51&oe=5B0921AC)
Post by: parasound on Feb 19, 2018 at 02:13 PM
Sent from my iPhone using Tapatalk
Post by: tony on Feb 19, 2018 at 02:25 PM
Nice upgrade sir, KT66 ba yun naka lagay?
Sent from my iPhone using Tapatalk
yes...
Post by: parasound on Feb 19, 2018 at 02:57 PM
, with correct bias setting.Sent from my iPhone using Tapatalk
Post by: tony on Feb 19, 2018 at 03:24 PM
Post by: tony on Mar 02, 2018 at 06:21 PM
(https://scontent.fmnl5-1.fna.fbcdn.net/v/t1.0-9/28468325_1784414364913523_2346530416199698158_n.jpg?oh=3271c8eea66410677499bd7b6464b659&oe=5B0EA452)
Post by: tony on Mar 11, 2018 at 11:12 AM
(https://scontent.fmnl2-1.fna.fbcdn.net/v/t1.0-9/29066284_1795052877183005_254886421083978842_n.jpg?oh=8edd257378f328805f6bd2408d9f0ab3&oe=5B3ACB3A)
(https://scontent.fmnl2-1.fna.fbcdn.net/v/t1.0-9/29103590_1795052900516336_5775444480564368172_n.jpg?oh=cf58d4469dfc1a9be3d230597cc934cd&oe=5B3EE8CF)
Post by: tony on Mar 13, 2018 at 08:56 AM
Quote
yet another variation of the 6BC4 line amp, this time a bit more B+ and a beefier power supply...OP about 90 volts dc and 10mA...a high transconductance tube with a strong cathode..
(https://scontent.fmnl2-1.fna.fbcdn.net/v/t1.0-9/29103468_1797487360272890_6405188088261210388_n.jpg?_nc_eui2=v1%3AAeFOopD6RaCO3l4-kC4zor5KTJWJz1l-Y7ryEiBg0eoMSvIHErKjgmQclSkZzD1fzvsYk5FlSXT-hEBo-OoYjZzSGpS23Ba3EbambZ0EPwpO1A&oh=f6ccae747c6904b3518aa5b2d60915f2&oe=5B43BBA1)
(https://scontent.fmnl2-1.fna.fbcdn.net/v/t1.0-9/29136531_1797487470272879_5377806654781774684_n.jpg?_nc_eui2=v1%3AAeHhX_Anr03VnS_j4iHgcgYQagb2DHE3Bpnmfq2CwWLAsYRMSQAKpUaP1ZNmPH_LEUHdH-HkyWOOrGJVnCgwzuxr90T7ajFcyAG1cRQGbLRS0w&oh=d4361aca2e23ff0c6857d1f4cb68b410&oe=5B00EB0A)
Post by: tony on Apr 09, 2018 at 05:56 PM
(https://scontent.fmnl2-1.fna.fbcdn.net/v/t1.0-9/30226613_1825393227482303_77292417954728767_n.jpg?_nc_cat=0&_nc_eui2=v1%3AAeF1HrG6kqzTiF666r6uP3IffwCrj3VoZFcz1SZk8L63C6mYo4rzmUa_nPMqzTfLeVY7MxflYvvS_tYoEWfzjbs9r3jbPzy21WmY1xrof4G5ng&oh=02ed7fd662fd58290b770d26aeb467a7&oe=5B73C645)
(https://scontent.fmnl2-1.fna.fbcdn.net/v/t1.0-9/30411809_1825517847469841_5129159303352901836_n.jpg?_nc_cat=0&_nc_eui2=v1%3AAeHjs8zugzhaxh8j--5o4xohdU8K4_dB4l7A4JwJ42G6wMJZRWmkcLph-3V8P9XSjtbp2zYyECvITIY0W2xaQnSZ-xX-wZiTBMllYJLUD1F82Q&oh=fb61a6071641aad9fa729887a718fdc5&oe=5B69AC25)
Post by: JojoD818 on May 21, 2018 at 05:55 PM
Post by: tony on May 22, 2018 at 06:03 AM
Hi Tony, I got na the used RCA jacks. Good for practice material. Thanks!
you are welcome jojo.....
Post by: jerix on May 31, 2018 at 07:05 AM
2A3 build #3....12gh7 triode wired CCS loaded, and JJ2A3 tube ready...CCS biasing for 60mA, makes tube rolling easy...
(https://scontent.fmnl2-1.fna.fbcdn.net/v/t1.0-9/30226613_1825393227482303_77292417954728767_n.jpg?_nc_cat=0&_nc_eui2=v1%3AAeF1HrG6kqzTiF666r6uP3IffwCrj3VoZFcz1SZk8L63C6mYo4rzmUa_nPMqzTfLeVY7MxflYvvS_tYoEWfzjbs9r3jbPzy21WmY1xrof4G5ng&oh=02ed7fd662fd58290b770d26aeb467a7&oe=5B73C645)
(https://scontent.fmnl2-1.fna.fbcdn.net/v/t1.0-9/30411809_1825517847469841_5129159303352901836_n.jpg?_nc_cat=0&_nc_eui2=v1%3AAeHjs8zugzhaxh8j--5o4xohdU8K4_dB4l7A4JwJ42G6wMJZRWmkcLph-3V8P9XSjtbp2zYyECvITIY0W2xaQnSZ-xX-wZiTBMllYJLUD1F82Q&oh=fb61a6071641aad9fa729887a718fdc5&oe=5B69AC25)
Kuya how much if you sell this? im just asking and it seems im interested...
Post by: tony on May 31, 2018 at 10:02 AM
Post by: jerix on May 31, 2018 at 10:22 AM
Post by: tony on May 31, 2018 at 02:34 PM
^thanks po! im looking for an entry level item around 20k maybe.
i have one in the works...will advise
Post by: tetablanco on Aug 01, 2018 at 08:37 AM
Post by: tony on Aug 01, 2018 at 08:46 AM
Post by: JoeyGS on Aug 01, 2018 at 11:52 AM
Post by: choyb on Aug 01, 2018 at 05:50 PM
Sir Tony, many more to come!Sent from my ASUS_X008D using Tapatalk
Post by: tetablanco on Aug 01, 2018 at 07:10 PM
salamat attorney Teta, would you like to babysit the 2A3 amp? ;)
Would be honored, Sir. :)
Post by: JojoD818 on Aug 02, 2018 at 08:37 AM
Post by: tony on Aug 02, 2018 at 08:38 AM
Post by: tony on Oct 26, 2018 at 10:40 AM
(https://scontent.fmnl2-1.fna.fbcdn.net/v/t1.15752-9/44740282_1618643121573867_1968800338332876800_n.jpg?_nc_cat=110&_nc_eui2=AeFdmj88wauyqOfa-rmj9-OTGYnkZigc5pUAPk0xhwDQSNKaGqh3p4UIlT2WMd-vslfCfu5tGRHlLEmR_Sg94JagDmogQY1Pwz-h8J2S_vY3jw&_nc_ht=scontent.fmnl2-1.fna&oh=c6aea1df61e127c30e3928f1a379283b&oe=5C51B046)
the kit fr4 double side boards:
(https://scontent.fmnl2-1.fna.fbcdn.net/v/t1.15752-9/44368407_750149221989558_1931080226142420992_n.jpg?_nc_cat=103&_nc_eui2=AeE67qZVjn7fDjMV8XOYbLP2JmTk-skYRycdCFLkmZubb0RrOHFrKSv783eFgKsBxEIKQ7RJ5I48lbmuqcHPsejPXZP1gfd2aYBCZSFXhKJPow&_nc_ht=scontent.fmnl2-1.fna&oh=92f29db75897fa12267ead8589c09233&oe=5C8747A1)
the amp: powered by a 24v@5ampere smps power supply...
(https://scontent.fmnl2-1.fna.fbcdn.net/v/t1.15752-9/44352439_1307643579412955_2694414477213827072_n.jpg?_nc_cat=103&_nc_eui2=AeE_BQFJyAxhdZNXYY2Xxdl7talofdlELYMzTYlH0Rg0mQmLaCn4tohxnx2o1StX_cp0_SPtMGfgj0BkzkE95DA55KyJmmq1gFbUQk4y7TJlNw&_nc_ht=scontent.fmnl2-1.fna&oh=d16279265bcdf59f9c358de7fa5ca717&oe=5C81BD6A)
Post by: tony on Jul 29, 2019 at 07:37 AM
Post by: tony on Jul 29, 2019 at 07:38 AM
Post by: tony on Jul 29, 2019 at 07:38 AM
Post by: tony on Jul 29, 2019 at 07:39 AM
Post by: tony on Jul 29, 2019 at 07:40 AM
(https://scontent.fmnl17-2.fna.fbcdn.net/v/t1.0-9/82953423_2918975024790779_7154720799880904704_o.jpg?_nc_cat=107&_nc_eui2=AeGqJtpGLs24UbGCpsLgyjKrYSk4j7InINgUgV5K5YU3UY3ngRTtdxOeWlnhPjB6sPe-czzco4mStwHYh3s0AtDz1LNbskKh1rSoBtR6hp0UpQ&_nc_ohc=OHdjYkG01UAAQmaAdl7Leuk4J0toHdkjTehTWHfbD_3PxmoESNRs1iarQ&_nc_ht=scontent.fmnl17-2.fna&oh=f096e07421e1b536c6ac32c28b7111ba&oe=5EDAFD75)
(https://scontent.fmnl17-2.fna.fbcdn.net/v/t1.0-9/81965219_2918973108124304_3929880485836095488_o.jpg?_nc_cat=111&_nc_eui2=AeFxdOcHLfrqOMvaloiY4Zb11OPUyI_Iw9ungkOFbCnKGZ1qpwifyZxO5UYSMM9st3iGZJSQ57pZmtc-CzyYuBuzyFgDny587oObzUjh_yRiZw&_nc_ohc=gwihJvbdYsQAQniAyp1Kt-OMDAfx_EmaK6HpW0oZyrGDgF0Ssz7e0wxwQ&_nc_ht=scontent.fmnl17-2.fna&oh=6017c417de953593832c1d09e812dbcf&oe=5EA4401E)
Post by: tony on Jun 03, 2020 at 07:25 AM
13FM7 spud amp, 1 watt of tube single ended power..
(https://scontent.fmnl17-2.fna.fbcdn.net/v/t1.0-9/82953423_2918975024790779_7154720799880904704_o.jpg?_nc_cat=107&_nc_eui2=AeGqJtpGLs24UbGCpsLgyjKrYSk4j7InINgUgV5K5YU3UY3ngRTtdxOeWlnhPjB6sPe-czzco4mStwHYh3s0AtDz1LNbskKh1rSoBtR6hp0UpQ&_nc_ohc=OHdjYkG01UAAQmaAdl7Leuk4J0toHdkjTehTWHfbD_3PxmoESNRs1iarQ&_nc_ht=scontent.fmnl17-2.fna&oh=f096e07421e1b536c6ac32c28b7111ba&oe=5EDAFD75)
(https://scontent.fmnl17-2.fna.fbcdn.net/v/t1.0-9/81965219_2918973108124304_3929880485836095488_o.jpg?_nc_cat=111&_nc_eui2=AeFxdOcHLfrqOMvaloiY4Zb11OPUyI_Iw9ungkOFbCnKGZ1qpwifyZxO5UYSMM9st3iGZJSQ57pZmtc-CzyYuBuzyFgDny587oObzUjh_yRiZw&_nc_ohc=gwihJvbdYsQAQniAyp1Kt-OMDAfx_EmaK6HpW0oZyrGDgF0Ssz7e0wxwQ&_nc_ht=scontent.fmnl17-2.fna&oh=6017c417de953593832c1d09e812dbcf&oe=5EA4401E)
the best sounding tube i made....
https://www.facebook.com/tony.tecson/videos/3248764635145148/?t=2