Turnable database with TimeLine

Dinster,
I have a good friend who owned a mint Nakamichi TX-1000 among his EMT927, Micro SX-5000 and SX-8000 as well as Continuum Criterion collection.
After a year or two....he became disillusioned with the sound of the TX-1000 in comparison to his other decks and sold it.
Centring the hole of the Lp does not guarantee consistent speed control of a particular turntable?
It simply removes one possible cause of distortion when playing an eccentric record on a turntable WITH perfect speed consistency.....

Lewm, thanks for your kind words. I agree there is a lot of "junk food" on the net.

Halcro, It would be very interesting to see a TimeLine test video of a very eccentric record´s play with 3 tonearms in action.

I would like someone with the TimeLine to make very small incremental adjustments in speed similar to the speed changes due to stylus drag.

Then listen closely at these different speeds, on records that have light and heavy modulation, and try to hear changes in sonics.

I do not think these changes (during play) are audible, as J. Peter Moncrief's theory (which Halcro quotes), implies.

He was "the" supreme theoretical BS artist, in his day.

Don,

Then listen closely at these different speeds, on records that have light and heavy modulation, and try to hear changes in sonics.

I think you're talking here about speed 'consistency' rather than 'absolute' speed?
I have no doubts that you are correct in the fact that if a turntable is running CONSISTENTLY fast or slow....and can cope with 'stylus drag'....the resulting sound will be undistorted and one could not really tell the difference.
In fact...the TT-101 has the facility to adjust the speed either UP or DOWN in 4 Hz increments so that one can match the relative 'pitch' of the record with an instrument that one might wish to play along with.
The only problem here....is that we don't have a Timeline which can alter 'pitch'....so that consistent speed of a turntable under stylus drag can only be verified by the Timeline at exactly 33.33rpm.