[78-L] Groove spacing - groove width
J. E. Knox
rojoknox at metroeast.org.invalid
Mon Nov 21 09:17:01 PST 2016
Greetings from FixitLand!
Ron Roscoe wrote:
> ...However, this link www.esotericsound.com/Electronics/REQ2MAN.pdf gives you
> access to the most comprehensive listing of recording curves for both 78 and
> 33 rpm discs. There are FIVE pages of playback curve equalizations.
> Incidentally, ***this chart shows that RCA didn't begin to change its turnover
> frequency upwards until around 1935-38 ... ***
Spectrum analysis of the records tells a different story. Don't believe everything you find on the Internet.
“Women and cats will do as they please, and men and dogs should relax and get used to the idea.” — Robert A. Heinlein
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