CCS have worked well for me in output stages, simple LM317's are adequate. Baby Huey bias blocks are a bit better.
Garter bias works remarkably well.
http://www.tubecad.com/2005/May/blog0046.htm
BOTH ARE ADJUSTMENT FREE !! Both can keep the output transformer from saturating with standing current in PP.
LED bias on single ended preamp duties perform very well.
Shoog
Garter bias works remarkably well.
http://www.tubecad.com/2005/May/blog0046.htm
BOTH ARE ADJUSTMENT FREE !! Both can keep the output transformer from saturating with standing current in PP.
LED bias on single ended preamp duties perform very well.
Shoog
Hmm, might just leave with cathode resistor and let it self-bias
That's what I'd do. I like everything as simple as possible, and there's nothing shabby about self-biased SET amp sound.
Class A: prefer fixed bias from a seperate low noise reg supply, with pots for each grid. Next one will probably implement bias regulators. Even better for 'A' I suspect is differential with bias regs.Psychobiker said:Hi,
Just wondering, what most use for the adjustable bias function - potentiometer on the cathode or what?
L
AB: also prefer fixed, but have briefly experimented with mixed cathode and fixed.
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