In Reply to: noise posted by mfitz on May 8, 2021 at 09:05:44:
The Dr low mu amps powered the 2a3 filaments from a CT transformer, AC without any further nulling. If that is the case with your amp, it will be one significant source of noise.
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Follow Ups
- RE: noise - 91derlust 05/8/2114:07:23 05/8/21 (4)
- RE: noise - sony6060 14:53:06 05/8/21 (3)
- He said both filaments are DC. (nt) - Triode_Kingdom 15:42:08 05/8/21 (2)
- Actually, that is not clear. - 91derlust 23:42:54 05/8/21 (0)
- RE: He said both filaments are DC. (nt) - sony6060 15:51:29 05/8/21 (0)