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RE: audio porn

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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