Low voltage 6922 preamp...wanting a schematic

jmillerdoc · 22nd May 2010, 08:17 PM

Hello,
I was sifting through my stash of parts today and came across a few 30VCT transformers and some 6922 tubes. I have all the parts on hand to build a low polate voltage linestage it appears but, no schematic. I recall seeing a schematic somewhere that uses a 6922 in a simple CF orientation with a plate voltage of around 30v. Does anybody have this or a similar schematic? Even a SRPP would be acceptable. I have no end result in mind oither than using up some parts for a weekend project. Any help greatly appreciated.
Thanks,
Jeff

Allen Wright · 22nd May 2010, 09:26 PM

Quote:

Originally Posted by jmillerdoc

Hello,
I was sifting through my stash of parts today and came across a few 30VCT transformers and some 6922 tubes...

Then I seriously suggest you series up a couple of those transformers and get some decent voltage for your tubes. At 30V B+, it will be very distorted, with 90V it could be a thing of beauty.

REgards, Allen

jmillerdoc · 23rd May 2010, 12:02 AM

I happen to have a 90v.....

xlinuxer · 23rd May 2010, 01:33 AM

I have the TELEFUNKEN 6922 data sheet........sshot-6.jpg

sshot-7.jpg

22nd May 2010, 08:17 PM	#1
jmillerdoc diyAudio Member Join Date: Mar 2009 Location: Lawton, OK, USA	Low voltage 6922 preamp...wanting a schematic Hello, I was sifting through my stash of parts today and came across a few 30VCT transformers and some 6922 tubes. I have all the parts on hand to build a low polate voltage linestage it appears but, no schematic. I recall seeing a schematic somewhere that uses a 6922 in a simple CF orientation with a plate voltage of around 30v. Does anybody have this or a similar schematic? Even a SRPP would be acceptable. I have no end result in mind oither than using up some parts for a weekend project. Any help greatly appreciated. Thanks, Jeff

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23rd May 2010, 12:02 AM	#3
jmillerdoc diyAudio Member Join Date: Mar 2009 Location: Lawton, OK, USA	I happen to have a 90v.....

23rd May 2010, 01:33 AM	#4
xlinuxer diyAudio Member Join Date: May 2010 Location: China	I have the TELEFUNKEN 6922 data sheet........sshot-6.jpg sshot-7.jpg

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