6Y6G tube for low-voltage SE amplifier?

KrankKall · 12th July 2011, 05:30 PM

I picked up a pair of nice coke bottle shaped Sylvania 6Y6G tubes.
Since their plate voltage is a maximum 200 volts.
Would it be possible to put together an SE amplifier using 120 line voltage and a pair of UF4007 diodes for SS rectification?
BTW: Cost is a factor in this particular amplifier build.
Since the 6Y6G tube requires 1.2 amps for heater current, I would use a 6.3v/4a filament transformer already in my possession.
Plus a 2.17A isolation transformer, again, already in my possession.
Would it be possible to use a 12au7 tube or a pair of 6au6 tubes as driver tubes?
A possible schematic would be really helpful (and greatly appreciated) also!

THANKS!!
Steve

john65b · 12th July 2011, 05:39 PM

I would use an Isolation transformer, not mains (I may have misunderstood your post), and the 6Y6's I have tried do not sound as nice as the 6V6...

Will it work? Sure...will it sound great? Maybe. I was slightly disappointed.

KrankKall · 12th July 2011, 06:25 PM

No problem, but YES.....I have a big-n'-heavy 2.17A Stancor isolation transformer.
I figure I'll give the 6Y6G tubes a shot at least.
Especially if I can do this without spending too much cash?

Steve

rock4016 · 12th July 2011, 07:03 PM

I was very happy with how this sounded.

Wavebourn · 12th July 2011, 07:03 PM

It is nice for SE in triode mode. In pentode better to use it for PP, to avoid quite significant 2'nd order distortions.

EvilMose · 12th July 2011, 11:17 PM

Do you have a set of triode curves for this tube? Data seems a bit hard to come by.

rock4016 · 13th July 2011, 12:03 PM

http://www.scottbecker.net/tube/sheets/137/6/6Y6GA.pdf

Page 3 has the triode curves.

Palustris · 13th July 2011, 02:56 PM

Use it triode connected to drive a 300B.

12th July 2011, 05:30 PM	#1
KrankKall diyAudio Member Join Date: Mar 2008 Location: Santa Fe, NM	6Y6G tube for low-voltage SE amplifier? I picked up a pair of nice coke bottle shaped Sylvania 6Y6G tubes. Since their plate voltage is a maximum 200 volts. Would it be possible to put together an SE amplifier using 120 line voltage and a pair of UF4007 diodes for SS rectification? BTW: Cost is a factor in this particular amplifier build. Since the 6Y6G tube requires 1.2 amps for heater current, I would use a 6.3v/4a filament transformer already in my possession. Plus a 2.17A isolation transformer, again, already in my possession. Would it be possible to use a 12au7 tube or a pair of 6au6 tubes as driver tubes? A possible schematic would be really helpful (and greatly appreciated) also! THANKS!! Steve

12th July 2011, 05:39 PM	#2
john65b diyAudio Member Join Date: Jan 2005 Location: Chicago	I would use an Isolation transformer, not mains (I may have misunderstood your post), and the 6Y6's I have tried do not sound as nice as the 6V6... Will it work? Sure...will it sound great? Maybe. I was slightly disappointed. __________________ "I speak Spanish to God, Italian to Women, French to Men, and German to my Horse" - Charles V

12th July 2011, 07:03 PM	#5
Wavebourn diyAudio Member Join Date: Sep 2006 Location: Pleasant Hill, CA	It is nice for SE in triode mode. In pentode better to use it for PP, to avoid quite significant 2'nd order distortions. __________________ The devil is not so terrible as his mathematical model! Wavebourn: We Create Creativity!

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12th July 2011, 06:25 PM	#3
KrankKall diyAudio Member Join Date: Mar 2008 Location: Santa Fe, NM	No problem, but YES.....I have a big-n'-heavy 2.17A Stancor isolation transformer. I figure I'll give the 6Y6G tubes a shot at least. Especially if I can do this without spending too much cash? Steve

12th July 2011, 11:17 PM	#6
EvilMose diyAudio Member Join Date: Aug 2006	Do you have a set of triode curves for this tube? Data seems a bit hard to come by.

13th July 2011, 12:03 PM	#7
rock4016 diyAudio Member Join Date: Aug 2005	http://www.scottbecker.net/tube/sheets/137/6/6Y6GA.pdf Page 3 has the triode curves.

13th July 2011, 02:56 PM	#8
Palustris diyAudio Member Join Date: Aug 2006 Location: Cape Cod	Use it triode connected to drive a 300B.

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