As you know Bill, Vic the designer of my rim/idler Salvation could not get an optical feedback system to work re moment to moment micro correction of speed. Whatever he tried led to a coldness or greyness in sound. Even the neat trick of measuring and correcting microvariations in voltage swings as speed changes led to changes in motor voltage output (or something like that), led to negatives in SQ.
Vic settled on simple analog "set (via strobe disc) and forget (for a few days at a time)".
Maybe Saskia also dispenses w speed measure/adjust loop?
Vic settled on simple analog "set (via strobe disc) and forget (for a few days at a time)".
Maybe Saskia also dispenses w speed measure/adjust loop?