In Reply to: RE: audio porn posted by Sidewinder on July 3, 2015 at 20:01:27:
Hi David
Yes, grid as plate. PSU is a mixed bridge (393A + Schottky diodes) into a LC filter followed by a CCS + C. Final voltage is 500V, the tube will set its plate voltage and the CCS is dropping 20V or so.
Gapped 16k output transformer and zeners under the 801A. Input step-up transformers removed but a (big) 1:4 or 1:8 would work there.
I am using LC filter + Rod Coleman's regulators to heat the 80A's. Amp is dead quite.
I googled but I could not find an updated schematic, sorry.
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