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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 mikelavigne

mikelavigne
2,144 posts
 
when i compare various turntables to the same recording on my Studer A820 it's easy to hear which turntables get the closest to matching the soliditiy of the music on the Studer.

Nojima Plays Listz is a very good recording of Piano on Lp, and is a Tape Project tape too; in theory the solidity and speed accuracy of that tape is the reference for the Lp as we know it's the actual source. on that recording there is no place to hide any speed variations as well as inaccuracies. and there are plenty of peaks to hear also.

i do have the KAB strobe and use it. however, it's limitation is the accuracy of the printed strobe and the perfection of the center hole of the strobe.

i think the tape-Lp comparison has more value to me.
mikelavigne
2,144 posts
 
D,

welcome to the left coast. if you get up here toward Seattle please stop by.

i too have preference for DD and idler, and while i have no experience with thread/high inertia i defer to your perspective about it.

i think that speed is like noise floor; until you hear your system with lower noise, you don't realize what you were missing. until you hear your records with better speed you don't know what you are missing. and i mean your records in your system.

as one climbs the ladder of performance this type thing becomes a bigger and bigger issue.
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