In Reply to: RE: Explanation of Digital Noise posted by fmak on October 25, 2014 at 00:03:51:
Well before the 70s, Stan Curtis in UK published articles on the tuning of amps and preamps using deliberatively undersized power transformers.
Apologies if I have the details wrong (it was over 30 years ago) but, as I recall it, Curtis let slip in a letter to Hi-Fi News that an amp he developed for Rotel in the 1970s had, by design, a PSU that resonated at the same frequency (90Hz?) as one of the open strings of a bass guitar. It went on to gain a reputation for being excellent for rock music.
See link for more on Curtis's interesting career.
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Follow Ups
- RE: Explanation of Digital Noise - Ryelands 07:34:20 10/26/14 (1)
- He also - fmak 01:10:12 10/27/14 (0)