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
Dear friends: Do you think here could exist speed accuracy?

https://picasaweb.google.com/hfeiner/TWOTURNTABLES?authkey=Gv1sRgCOy02-j1puykKA#5678170499062229282

that's is a JC/TH/H contribution.

Regards and enjoy the music,
R.
Dear Raul: If one has built a turntable than which none greater can be conceived, then there's no need to listen to others, except as a form of idle amusement.
Funny thing that as soon as a NEW component - which none here has heard nor seen in real life so far - isn't praised ahead it is "diminished".
It is not.
It is just not praised ahead and there is nothing new displayed.
Simple.
Some will buy it - some won't.
It will eventually earn some laurels and I will most likely be one of the first in the western hemisphere seeing and listen to it.
Turntable designer disclaimer ...;-) .....
Dear Dertonarm/Syntax: +++++ " However IMHO speed accuracy is a basic - if not THE basic - request to ANY turntable.
As said before - this is a conditio sine qua non for any turntable.
As this is a basic feature, it is not contributing to the sound quality.... " +++++

IMHO that statement is plain wrong: it is as to say that a phono stage " basic request " is no RIAA deviation/gain with no noise or in an amplifier 0.01 ohms output impedance or in a cartridge flat ( cero deviation ) frequency response or whatever with any kind of audio items.

The premise that those are " basic request " audio device in the designs does not means the audio product already achieved only because are " main request ".
In our imperfect audio world there are almost none of that " main requests " in any design that fulfil those main requests.

So to assume that main requests are all there is IMHO a wrong assumption.

TT's is only an example both of you can take any audio item and you will and know that the " majority " does not fulfil even those main requests. Mediocrity is the name of the game with a few exceptions.

Now, speed is only one factor in the whole TT design and in the final quality level performance.

We will see how good the " main request " on a TT: neutral/accurate can be match by all those new designs including yours.

Regards and enjoy the music,
R.
I am not assuming that the main requests are all there, - in fact I see that in many cases this is just not the case.
The request itself is nevertheless a conditio sine qua non in the context of the technical blue book of ANY turntable.
That reality in many instance doesn't follow the request doesn't mean the request is wrong.
Mediocrity may be the name of the game with few exceptions.
It never was for me.
To me it is always and only about best possible results - not was a majority may have problems in nor whether a majority of components may have problems with.
IMHO speed accuracy is so basic a request by nature for a turntable that it is not worth discussing at all.