Author Topic: My Tube Journey  (Read 210466 times)

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Offline remington

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Re: My Tube Journey
« Reply #240 on: Sep 15, 2014 at 08:47 AM »
ayos master dami nang bago!
tube + audio nirvana = beyond...

Offline tony

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Re: My Tube Journey
« Reply #241 on: Sep 15, 2014 at 04:08 PM »
preliminary sound test....



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...
« Last Edit: Sep 18, 2014 at 09:21 AM by tony »
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline tony

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Re: My Tube Journey
« Reply #242 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
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline tony

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Re: My Tube Journey
« Reply #243 on: Sep 15, 2014 at 04:12 PM »
for those looking to buy Russian tubes, there is a russian vendor posting at elab.ph...

http://www.elab.ph/forum/index.php?topic=44523.0
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline delinsk

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My Tube Journey
« Reply #244 on: Sep 15, 2014 at 06:39 PM »
Basta k sir tony ayos talaga yan :)

Offline tony

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Re: My Tube Journey
« Reply #245 on: Sep 15, 2014 at 06:41 PM »
thanks jun, i like to use big OPT's for tubes such as the 6550/KT88....;)
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline tony

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Re: My Tube Journey
« Reply #246 on: Oct 06, 2014 at 10:38 AM »
now playing......EL34 parallel push-pull inspired my Marantz 9 monos...
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...




how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline remington

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Re: My Tube Journey
« Reply #247 on: Oct 07, 2014 at 08:36 AM »
wow master very powerful sigurado yan!!! :o
« Last Edit: Oct 07, 2014 at 08:38 AM by remington »
tube + audio nirvana = beyond...

Offline tony

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Re: My Tube Journey
« Reply #248 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....;)
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline tony

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Re: My Tube Journey
« Reply #249 on: Oct 08, 2014 at 07:06 PM »
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline parasound

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My Tube Journey
« Reply #250 on: Oct 08, 2014 at 09:02 PM »
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.
Fullrange.. Fullrange.. Fullrange.. Fullrange

Offline remington

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Re: My Tube Journey
« Reply #251 on: Oct 08, 2014 at 10:44 PM »
grabe! ang gaganda ng gawa niya!!!!
tube + audio nirvana = beyond...

Offline tony

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Re: My Tube Journey
« Reply #252 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.....
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline Abad Santos 7

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Re: My Tube Journey
« Reply #253 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.

Offline tony

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Re: My Tube Journey
« Reply #254 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
« Last Edit: Oct 09, 2014 at 10:56 AM by tony »
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline parasound

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My Tube Journey
« Reply #255 on: Oct 09, 2014 at 01:50 PM »
Ok yan Sir Tony..
Fullrange.. Fullrange.. Fullrange.. Fullrange

Offline Abad Santos 7

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Re: My Tube Journey
« Reply #256 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

Offline tony

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Re: My Tube Journey
« Reply #257 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....
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline tony

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Re: My Tube Journey
« Reply #258 on: Oct 13, 2014 at 12:58 PM »
the other amp in another color...

how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline parasound

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My Tube Journey
« Reply #259 on: Oct 13, 2014 at 02:36 PM »
Ganda ng combination ng kulay
Fullrange.. Fullrange.. Fullrange.. Fullrange

Offline tony

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Re: My Tube Journey
« Reply #260 on: Nov 17, 2014 at 07:32 PM »
6C33 preheating and initial burn-in....




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Offline remington

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Re: My Tube Journey
« Reply #261 on: Nov 17, 2014 at 09:08 PM »
WOW another exciting build master......makakarinig nanaman ng bagong flavor!!!
tube + audio nirvana = beyond...

Offline tony

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Re: My Tube Journey
« Reply #262 on: Nov 21, 2014 at 08:45 AM »
remember this SET, a triode wired 6AV5?

and draws this much power?


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


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


in action...



power draw...better than the KT88....kaya na nyang painitin yung power traffo... ;)
« Last Edit: Nov 21, 2014 at 08:51 AM by tony »
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Offline tony

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Re: My Tube Journey
« Reply #263 on: Nov 23, 2014 at 10:02 AM »
this amp has been with me for about 2 years now...


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...
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline oicnoreg

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My Tube Journey
« Reply #264 on: Nov 23, 2014 at 11:44 AM »
Another benchmark creation from the man....

Offline tony

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how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline tony

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Re: My Tube Journey
« Reply #266 on: Nov 29, 2014 at 08:10 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...
« Last Edit: Nov 29, 2014 at 08:13 PM by tony »
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....

Offline oicnoreg

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My Tube Journey
« Reply #267 on: Nov 30, 2014 at 05:22 PM »
I will drop by again sir tony to learn from you the techs of how an amp is build.... ;-)

Offline mrquery

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Re: My Tube Journey
« Reply #268 on: Nov 30, 2014 at 06:35 PM »
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.

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...
US Gears: Eico | Tannoy | Thorens | MHDT
KL. Gears: Arcam | Castle | Thorens
PH Gears: HK | Infinty

Offline tony

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Re: My Tube Journey
« Reply #269 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...
how do we defend our freedom? by the truth when it is assaulted by Marcos lies....