Author Topic: My Tube Journey (Read 210327 times)

tony · « **Reply #510 on:** Sep 03, 2015 at 05:56 PM »

Quote from: remington on Sep 02, 2015 at 04:37 PM

pwede ba ma home audition pag natapos master

of course.....

tony · « **Reply #511 on:** Sep 08, 2015 at 07:19 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

rochie · « **Reply #512 on:** Sep 08, 2015 at 10:16 AM »

Quote from: tony on Sep 08, 2015 at 07:19 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

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.

tony · « **Reply #513 on:** Sep 08, 2015 at 10:58 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....

rochie · « **Reply #514 on:** Sep 08, 2015 at 11:31 AM »

Quote from: tony on Sep 08, 2015 at 10:58 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.

tony · « **Reply #515 on:** Sep 08, 2015 at 03:49 PM »

"tin plating".....
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....

tony · « **Reply #516 on:** Sep 09, 2015 at 08:49 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...

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...

tetablanco · « **Reply #517 on:** Sep 10, 2015 at 08:02 AM »

Quote from: tony on Sep 09, 2015 at 08:49 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...

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!

tony · « **Reply #518 on:** Sep 10, 2015 at 11:02 AM »

Quote from: tetablanco on Sep 10, 2015 at 08:02 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...

geriboy · « **Reply #519 on:** Sep 10, 2015 at 11:05 AM »

Sir Tony, ano po yung "tube from hell" na binanggit ninyo sa last post ninyo? Hindi kasi naglo-load yung pic? Thanks

tony · « **Reply #520 on:** Sep 10, 2015 at 11:15 AM »

Quote from: geriboy on Sep 10, 2015 at 11:05 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....

camoteque · « **Reply #521 on:** Sep 10, 2015 at 11:45 AM »

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.

tony · « **Reply #522 on:** Sep 10, 2015 at 12:03 PM »

Quote from: camoteque on Sep 10, 2015 at 11:45 AM

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...

kayee · « **Reply #523 on:** Sep 10, 2015 at 04:03 PM »

sir tony yan yung vinyl savor ni thomas mayer....6cb5a, 6ge5....$4 na rin yung price ng tubo tumaas na rin....

tony · « **Reply #524 on:** Sep 10, 2015 at 04:14 PM »

Quote from: kayee on Sep 10, 2015 at 04:03 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....

kayee · « **Reply #525 on:** Sep 10, 2015 at 04:25 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....

tony · « **Reply #526 on:** Sep 10, 2015 at 04:41 PM »

Quote from: kayee on Sep 10, 2015 at 04:25 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...

tony · « **Reply #527 on:** Sep 10, 2015 at 05:35 PM »

6LU8 build no.3 completed....

kayee · « **Reply #528 on:** Sep 10, 2015 at 06:13 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.

tony · « **Reply #529 on:** Sep 11, 2015 at 01:05 PM »

Quote from: kayee on Sep 10, 2015 at 06:13 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.... $:-\$

kayee · « **Reply #530 on:** Sep 11, 2015 at 03:17 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....

dana · « **Reply #531 on:** Sep 11, 2015 at 03:40 PM »

tikasin naten jan papaT ah.
pedeng isali sa "ALONE" series.

tony · « **Reply #532 on:** Sep 11, 2015 at 03:49 PM »

Quote from: kayee on Sep 11, 2015 at 03:17 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...

tony · « **Reply #533 on:** Sep 11, 2015 at 03:50 PM »

Quote from: dana on Sep 11, 2015 at 03:40 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.....

yung long hair....

my interpreter....very efficient.....

all Pinoy QC/QA team...

CoolTOYZPH · « **Reply #534 on:** Sep 11, 2015 at 04:02 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.

tony · « **Reply #535 on:** Sep 11, 2015 at 04:14 PM »

Quote from: CoolTOYZPH on Sep 11, 2015 at 04:02 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

CoolTOYZPH · « **Reply #536 on:** Sep 11, 2015 at 05:23 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.

tony · « **Reply #537 on:** Sep 11, 2015 at 06:25 PM »

Quote from: CoolTOYZPH on Sep 11, 2015 at 05:23 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.....

tony · « **Reply #538 on:** Sep 14, 2015 at 03:59 PM »

two phono preamps in the making....one is a clone of the pioneer sx-700 head amp,(thanks to Wil Cerna for the layout...and the other is a VSPS phono preamp using the LM4562 IC.........

rochie · « **Reply #539 on:** Sep 14, 2015 at 04:14 PM »

sir tony,
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?