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Old 3rd April 2011, 10:03 PM   #51
JandG is offline JandG  United States
diyAudio Member
 
Join Date: Jan 2005
Location: Washington State
Yep,
I just went back to SE & added a 2c22 front end & it is wonderfull. I am not to touch circuit anymore. I am running a regulated g2 via glow tubes in it's own PS CLCLC all poly. Regulated 807 bias, battery grid leak bias on the 5687, series battery grid bias on the 2c22. 807's have dedicated supply also. So deos the 5687. over kill ,.....but it's DIY & can do what I want. *s*
2c22- 100v @ 5mA
5687 220v @ 20mA max dissapation now, so might back off a little, but not much.
807-460v @ 50mA
It is the best amp I have heard
good ridance 300B..............
Joe
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Old 5th April 2011, 01:27 AM   #52
Zekk is online now Zekk  Singapore
diyAudio Member
 
Join Date: Mar 2009
Quote:
Originally Posted by JandG View Post
Yep,
I just went back to SE & added a 2c22 front end & it is wonderfull. I am not to touch circuit anymore. I am running a regulated g2 via glow tubes in it's own PS CLCLC all poly. Regulated 807 bias, battery grid leak bias on the 5687, series battery grid bias on the 2c22. 807's have dedicated supply also. So deos the 5687. over kill ,.....but it's DIY & can do what I want. *s*
2c22- 100v @ 5mA
5687 220v @ 20mA max dissapation now, so might back off a little, but not much.
807-460v @ 50mA
It is the best amp I have heard
good ridance 300B..............
Joe
Hi Joe!

Is that a three stage amp?

Care to share your schematics!?

I've a pair of gorgeous looking Mullard QV05-25 !

Thanks.

Zekk
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