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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
don_c55
1,025 posts
 
Halcro

Sutherland designs "CRAP" cold sounding phono stages!

They sound similar to HALCO amps!

The turntable in the video has a wimpy low torque motor drive system!!

Needle drag does not slow down "Properly Designed" turntables!
dgarretson
2,598 posts
 
Don_c55, try comparing a carefully tensioned cotton poly thread to the stock elastic band on your TNT. This will demonstrate the clearly audible difference between absolute and transient speed stability.
palasr
527 posts
 
Don,

You are simply wrong. Stylus drag will slow down any turntable, regardless of platter weight; it merely changes the period over which it occurs due to inertia. And yes, the 60Hz mains supply does fluctuate enough to be completely problematic.
Then again, if you can't hear it, more power to you.
halcro's avatar
halcro
2,664 posts
 
If your platter is heavy, playing a record will not affect the speed.
That was the first quote from Don.
Needle drag does not slow down "Properly Designed" turntables!
That was the second quote from Don.
I guess I can agree with the second. it seems like a logical imperative :-)
downunder
1,329 posts
 
I used to own a VPI TNT-V hot rod and a HRX.

EVERY time a pulled out the kab strobe the speed was different.

This had nothing to do with stylus drag.
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