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Turntable speed accuracy

There is another thread (about the NVS table) which has a subordinate discussion about turntable speed accuracy and different methods of checking. Some suggest using the Timeline laser, others use a strobe disk.

I assume everyone agrees that speed accuracy is of utmost importance. What is the best way to verify results? What is the most speed-accurate drive method? And is speed accuracy really the most important consideration for proper turntable design or are there some compromises with certain drive types that make others still viable?
peterayer

Showing 2 responses by jazdoc

jazdoc
365 posts
 
Peterayer alludes to interesting questions:

Is speed stability THE most important turntable parameter?

Is there a degree of speed stability below which variations become inaudible?

Is this something that could be tested with reproducible results?

How does a turntable's immunity to outside vibration and ability to dissipate internally generated noise and vibration impact performance relative to speed stability?
jazdoc
365 posts
 
Albert - excellent, thoughtful response. You may now don your asbestos suit! ; - )

I think you make a couple of excellent points; namely that speed precision AND accuracy are both important. IME, individuals vary in their sensitivity to one versus the other. I also agree that while speed parameters are obviously important to turntable performance, other characteristics contribute to the overall turntable quality including immunity from internally and externally generated noise/vibration.
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