Interesting. Wish I still had a copy of the Audio Cyclopedia... but did
the speed not originate with hand cranked machines before electrical
Lou Judson • Intuitive Audio
On May 24, 2006, at 2:09 PM, Steven Smolian wrote:
> See Tremain's Audio Encyclopedia. These are all stepwise adjustments
> to a basic gearing at 60 cycles.
> Steven Smolian