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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
viridian's avatar
viridian
4,184 posts
 
I don't think that speed accuracy is of utmost importance. Well, it may be for those with perfect pitch, but not I.

Many LPs made from analog tape are not speed perfect from the get go, vide Davis KOB.

Then again, it has always been my thought that long term speed variations are much less intrusive than short term variations, but I have no actual scientific evidence support to this theory.
rockitman's avatar
rockitman
417 posts
 
I suppose using a strobe disk and the Timeline laser then comparing the results. I don't lose much sleep over it...I use a strobe disk and that is good enough.
samhar
1,034 posts
 
I like and use a digital tachometer for checking speed accuracy. I've tried strobe discs but like the tach more.
elizabeth
6,726 posts
 
Speed is also NOT of utmost importance to me.
I do nor 'suffer' from perfect pitch, and am glad I do not.
So n problem for me. Whatever the speed as long as it is reasonable I am fine.
So 31 rpm is probably not reasonable here... Just to fend off jokers..
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