@antinnĀ
The wow and flutter induced by eccentric records would far exceed the minor deviations in speed of a decent turntable, and most records are eccentric to some degree. Therefore what relevance does .001 or .0001 speed variation really have ?
In my view what you want is stability, and every direct drive I have heard thus far including the SP10mk3, LO7D, Denon DP100M has been slaughtered by my Final Audio thread drive VTT1 - the DD's sound thin, lacking body, are grainy or have a grey wash through the sound, and the Final has been more resolving of low level detail.
In case you think I'm biased, no, my Final Audio VTT1 weighs 300lbs, the AC motor is driven from a sinewave and cosine wave generator, power amplifier, Oracle MIT interconnect and speaker cable and if I could find a single box turntable that sounded better I'd be very happy. By the way the 26kg platter can be brought up to full speed in less than one platter rotation depending on how much torque I dial up on the controller.
My gut feel with historical top end DD's is that error correction servos, like digital, are doing the damage.
I know one well respected top end TT designer who has provided design services for a DD for another top end company and his solution was to provide a soft error recovery spread over multiple revolutions simlar to the Victor 101 error correction system.
Some of these uber tables have impressive amounts of engineering, but they have yet to correct the spindle hole centering issue
The wow and flutter induced by eccentric records would far exceed the minor deviations in speed of a decent turntable, and most records are eccentric to some degree. Therefore what relevance does .001 or .0001 speed variation really have ?
In my view what you want is stability, and every direct drive I have heard thus far including the SP10mk3, LO7D, Denon DP100M has been slaughtered by my Final Audio thread drive VTT1 - the DD's sound thin, lacking body, are grainy or have a grey wash through the sound, and the Final has been more resolving of low level detail.
In case you think I'm biased, no, my Final Audio VTT1 weighs 300lbs, the AC motor is driven from a sinewave and cosine wave generator, power amplifier, Oracle MIT interconnect and speaker cable and if I could find a single box turntable that sounded better I'd be very happy. By the way the 26kg platter can be brought up to full speed in less than one platter rotation depending on how much torque I dial up on the controller.
My gut feel with historical top end DD's is that error correction servos, like digital, are doing the damage.
I know one well respected top end TT designer who has provided design services for a DD for another top end company and his solution was to provide a soft error recovery spread over multiple revolutions simlar to the Victor 101 error correction system.

