In Reply to: He said both filaments are DC. (nt) posted by Triode_Kingdom on May 8, 2021 at 15:42:08:
"Using dc reg on both filament and high voltage supplies on the pre."I read this as he is using regulation on both the filaments and B+ of the pre. It could also mean something different.
So, I'm not assuming DC on the filaments, especially in a Dr. LowMu designed amp... and the OP did mention 60Hz.
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Follow Ups
- Actually, that is not clear. - 91derlust 05/8/2123:42:54 05/8/21 (0)