6LU8 Push-pull power amp and other builds

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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Mon Jul 29, 2013 7:43 pm

shape of things to come.... 8)

EL34 PSE...
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6V6 pp amo...
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Fri Aug 02, 2013 7:32 pm

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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Wed Aug 14, 2013 4:06 pm

under the hood...
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all irons done by me.....ultra-linear opt's.. 8)
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Re: 6LU8 Push-pull power amp and other builds

Postby kabubi » Wed Aug 14, 2013 7:00 pm

great work, Tony. As always.
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Sun Aug 18, 2013 6:05 pm

kabubi wrote:great work, Tony. As always.


thank you sir.... :)

just finished.... :D
EL34 paralleled triode connected single ended amp, driven by a 6CL6 pentode...
operating points simmilar to a 2A3, the 5T4, a metal equivalent of the 5U4 is supplying about 240mA current,
it is on the brink, will know in the days to come.....
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Sun Aug 18, 2013 8:51 pm

rightside up and powered up...
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power consumption....186watts for an ouput of about 10watts per channel...
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line voltage...
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Re: 6LU8 Push-pull power amp and other builds

Postby dB10 » Mon Aug 19, 2013 7:34 am

Congrats on this build sir, I hope to see more in the future :clap:
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Mon Aug 19, 2013 8:21 am

dB10 wrote:Congrats on this build sir, I hope to see more in the future :clap:


thanks, i have accumulated over a thousand tubes, 99% of which are either
teevee or transmitter tubes, i still have a lot of designs to try out.... 8)
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Thu Aug 22, 2013 12:10 pm

this just got to my door... ;)

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Re: 6LU8 Push-pull power amp and other builds

Postby babydoc » Thu Aug 22, 2013 7:45 pm

lovely toy :envy: :envy: :envy: congrats
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Fri Aug 23, 2013 11:29 am

babydoc wrote:lovely toy :envy: :envy: :envy: congrats



unfortunately this unit was plugged into 220 volts, will try to revive and maybe squeeze in an autotransformer inside.... :)
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Sat Aug 24, 2013 10:57 am

Guitar amps using TeeVee tubes....

parallel pp lead guitar head uses the 12W6 vertical output tube...
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sextet 12BQ6G horizontal output tubes for bass head, for a power output of approcimately 150 watts..
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these tubes are a dollar each from tube vendors in Florida, USA....
more pictures here...https://www.facebook.com/tony.tecson/me ... 477&type=1
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Sat Aug 24, 2013 6:44 pm

now playing, some more tweaking needed...

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with a KT88 tube installed..
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Last edited by tony on Sun Aug 25, 2013 7:00 am, edited 1 time in total.
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Re: 6LU8 Push-pull power amp and other builds

Postby jevtagalog » Sun Aug 25, 2013 12:15 am

WOW BOSS TONY ANG GANDA NAMAN!!!!!!!!!!!!! :bow: :dance: :clap:
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Fri Aug 30, 2013 12:34 pm

with 10Y preamp, choke loaded, led cathode biased..

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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Fri Sep 06, 2013 5:18 pm

replaced the 5T4 tube rectifier with silicon rectifier mounted on an octal tube base...
about 20 watts less power consumption and 15volts added to B+....
more pictures here.....https://www.facebook.com/tony.tecson/me ... um_comment
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Fri Sep 20, 2013 3:53 pm

new builds...
6L6GC guitar head...
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6L6GC jukebox amplifier...
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Sun Sep 22, 2013 12:10 pm

my build for a fellow member....

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torroids mounted vertically, ANTEK AN3236, turns out one torroid had open primary windings....
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heatsinks, the amp assembly will be clamped to the heatsink...
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powder coating comes next.....
more pictures here... https://www.facebook.com/tony.tecson/me ... 477&type=3
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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Thu Sep 26, 2013 12:00 pm

this AMX EL84 amp is the best sounding amp i have heard from AMX so far... :clap:
the amp was bought at PDVD for 3k with some issues, replacing power tubes,
selector switch and volume control brought it back to life... :clap:

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Re: 6LU8 Push-pull power amp and other builds

Postby tony » Tue Oct 22, 2013 11:01 am

this is my latest DIY power cable...

power cord from ROKS in Raon, 3 core x AWG#14 cores purchased for 85 pesos..
then group buy over at elab.ph, for the OYAIDE Elec. male plugs and EIC plug at 241 pesos a pair...
ferrite tube heatshrinked over... 8)

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