Author Topic: My Tube Journey (Read 210454 times)

tony · « **Reply #570 on:** Oct 30, 2015 at 12:35 PM »

Quote from: rochie on Oct 30, 2015 at 12:34 PM

cool, separate output board?

most likely....

rochie · « **Reply #571 on:** Oct 30, 2015 at 12:41 PM »

Quote from: tony on Oct 30, 2015 at 12:35 PM

most likely....

ayos, abangan ulit. I have some 5200 and 1943 coming in from Dandy in the next few weeks.

tony · « **Reply #572 on:** Nov 02, 2015 at 06:26 PM »

DNY40W second build....chasis already poweder coated...

partial assembly, power supply and speaker protection, installed and tested, confirmed working...

tony · « **Reply #573 on:** Nov 04, 2015 at 11:47 AM »

VSPS phonohead....AIKIDO preamp, DNY40W power amp, playing...
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....

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....

ndotcom · « **Reply #574 on:** Nov 04, 2015 at 01:38 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...

tony · « **Reply #575 on:** Nov 04, 2015 at 04:16 PM »

Quote from: ndotcom on Nov 04, 2015 at 01:38 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

ndotcom · « **Reply #576 on:** Nov 05, 2015 at 04:31 AM »

Thanks sir Tony, simple circuit diagram at minimal parts. Sana available lahat sa isa shop dito, now I miss Raon or Deeco

tony · « **Reply #577 on:** Nov 06, 2015 at 08:33 PM »

Quote from: ndotcom on Nov 05, 2015 at 04:31 AM

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....

zonks · « **Reply #578 on:** Nov 06, 2015 at 08:49 PM »

good evening sir, wala pa ba yung ampunin ko?

tony · « **Reply #579 on:** Nov 07, 2015 at 07:18 AM »

Quote from: zonks on Nov 06, 2015 at 08:49 PM

good evening sir, wala pa ba yung ampunin ko?

ready anytime you are....

tony · « **Reply #580 on:** Nov 10, 2015 at 08:26 PM »

was at Raon the other day, i found this carbon fiber stickers plain matte black....

before stickers were applied:

after stickers were applied:

a pair of SET Opt's got covered also:

zonks · « **Reply #581 on:** Nov 10, 2015 at 08:59 PM »

Quote from: tony on Nov 07, 2015 at 07:18 AM

ready anytime you are....

uy nice hehe, kapupunta ko lang ke vhinx, sana pala nakadaan na ko

tony · « **Reply #582 on:** Nov 11, 2015 at 07:57 AM »

Quote from: zonks on Nov 10, 2015 at 08:59 PM

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...

dana · « **Reply #583 on:** Nov 11, 2015 at 10:19 AM »

Quote from: tony on Nov 10, 2015 at 08:26 PM

was at Raon the other day, i found this carbon fiber stickers plain matte black....

before stickers were applied:

after stickers were applied:

a pair of SET Opt's got covered also:

ayus.
yan ba ung sa mga naglipana sa mga motorcycle accessories...

tony · « **Reply #584 on:** Nov 11, 2015 at 11:18 AM »

Quote from: dana on Nov 11, 2015 at 10:19 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...

tony · « **Reply #585 on:** Nov 11, 2015 at 04:35 PM »

installed small aluminum heatsinks for the VAS ang the big CCS to keep them cooler...

tested the boards for output offset and set it to 0mV....idle current set to minimum...
series lamp tester used here...

wiring up after confirming boards...

tony · « **Reply #586 on:** Nov 13, 2015 at 06:44 AM »

Danny Eulogio 2nd build redlines....

ready for power soak testing...

rochie · « **Reply #587 on:** Nov 13, 2015 at 11:16 AM »

Quote from: tony on Nov 13, 2015 at 06:44 AM

Danny Eulogio 2nd build redlines....

ready for power soak testing...

ilang watts yang 2nd redline build mo sir Tony?mukhang abot na yan ng 100 watts ano?

tony · « **Reply #588 on:** Nov 13, 2015 at 01:17 PM »

Quote from: tony on Nov 13, 2015 at 06:44 AM

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...

tony · « **Reply #589 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...

tony · « **Reply #590 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...

tony · « **Reply #591 on:** Nov 20, 2015 at 07:05 AM »

powering up.....amp is now in class B, not inclined to listen to it yet...
will bias the output to about 50mA each so that the 19watt idle power increases to 39watts.

tony · « **Reply #592 on:** Nov 20, 2015 at 10:55 AM »

setting up for output trannie bias current...
i installed the to 0.33 ohm resistors to have dog ears so i can clip test leads easily..

readings accross the resistors for 50mA idle current...

final reading of 29 watts from an initial reading of 19 watts..
so that the output stage now dissipates 10 watts..

a look inside with the lid on...

tony · « **Reply #593 on:** Nov 21, 2015 at 11:21 AM »

now playing....

remington · « **Reply #594 on:** Nov 21, 2015 at 11:45 AM »

nice master!!! black beauty...

tony · « **Reply #595 on:** Nov 21, 2015 at 12:35 PM »

thanks, tweaking mode pa muna...checking on reliability since this one is running higher rails, but off hand, bass is very good...

btw, i have 3 other ss amps in the works....

dana · « **Reply #596 on:** Nov 21, 2015 at 12:41 PM »

papaT, idol...
mga xmas toys ba yan for noche buena and new yr?

tony · « **Reply #597 on:** Nov 21, 2015 at 12:46 PM »

^ marami pang lalabas....yung 829b na pp mga 1st quarter ng 2016....
baka mahabol ko pa this december yung 4D32 na single ended, enhanced triode mode...
para doon yung mga trafos na binalutan ng itim....

tony · « **Reply #598 on:** Nov 21, 2015 at 02:38 PM »

Quote from: dana on Nov 21, 2015 at 12:41 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...

remington · « **Reply #599 on:** Nov 21, 2015 at 05:59 PM »

kaabang-abang yung 829b