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TonyB wrote:

I disagree. I think it depends on the turntable. If I did not try it on MY turntable, I would not believe. My Verdier uses a DC motor "sloppy" mounted on grommets. The drive is linen thread. I have tried silk, different threads, 1/4" mag tape, different 1/2" tapes, another pulley and fixed motor mounting. Each of them sounded different and in the end I preferred the original "sloppy" mounted motor with the linen thread. I came to a conclusion that Jean-Constant Verdier did his homework before he started shipping his turntables. Please do not forget that Verdier is a suspended table. Speaking with my friends, I have no doubt that their Galigier and Teres tables without suspension work better with 1/2" tape. But their motors, pods and tables are different from mine. And what works for them, does not work for me.

Tony, this was exactly the pint of my thread: The Foolishness of Analog People

http://www.goodsoundclub.com/TreeItem.aspx?postID=2002

the faulty design objective and faulty criteria create the faulty arrays of “know-hows” to deal with the faults. The belt and platter is essentially, in its mechanic equivalent, is a second order filter. I remember a few years ago Lexhnitsky wrote in one of the magazines the mathematic of this processes. However, what people loosing when they observe the belt-platter relation is that if the momentum of the platter is very high and the compliance of belt is very low then the mechanical filter become absolutely negligible. Would you consider that a combination with 5 Farad capacitor and .001 mH coil being a second order filter? Anyhow, I do presume that with light (still the Verdier is not particularly light), suspended turntables and with the belt/thread applied unreasonably hard the belt would meter. From one perspective, yes, if we look at the Teres or Clearaudio or to many others then they “change sound” even if my Cat farts in a listening room. However, I am convinced that with a properly made TT the effect of loosely applied belt would, not be auditable. I personally do not believe that it would be auditable even in the light TT. Call me “being in denial”.

TonyB wrote:

Similar could be said about AC vs. DC motor power. A lot of people say that battery DC power sounds better or a certain DC voltage speed controller is better. I have tried at least 3 different batteries and AC is still better in my system. The batteries made sound dead for me. The same went for the speed adjustment. I have made some high performance speed controllers, including load-compensating type. In the end, I preferred the basic regulator. (Well, it was completely rebuilt.) It is possible that I did not do everything right in the other controllers, since things like a DC supply cable make a difference (this is from my personal experience). I still have a couple of tricks in my sleeve for the DC power and the speed controller. It is a no expense spared approach but I wonder whether in the end it will be worth those $700 spent. I will know in a few weeks...

I really do not know what to say, Tony. Spending efforts for decoupling a motor from a TT and then to claim that the supply of the motor “sounds better” is really beyond my understanding. I would understand when people use bad motors that dispense some kind of magnetic fields around themselves, heat or vibration that shake the entire building. I understand the issues with electoral part of motors (thermo stability at low speed and so on…)  but I really do not know how it all might relate to Sound if the belt/platter decoupling is made responsibly good.

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