Quote Originally Posted by Mr Kipling View Post
So, who has a platter that IS balanced?

The AR XAU's platter was balanced as was the AR 77's.

Nearly 40 years ago I used Bostik Sound Deadening Panels intended for use on cars on a Thorens 160 and AR XAU to good effect.
The Technics SP10 platter was dynamically balanced and had stickers to say so. It is much less of an issue on a belt or idler. If they use an AC motor it is phase locked and has no servo's to confuse with platter imbalance, and even dc motors are operating at much higher speeds, and can make more, smaller corrections to maintain constant speed. Different on a DD - potentially