Quote Originally Posted by 02audionoob
The glass platter on a Rega weighs about 3 or 4 American pounds, so I would think turntables must not be that sensitive about the weight on top.
Generally the heavier the platter the more stable the speed would be. Of course it would take a motor with more torque to get it up to speed. In theory, heavier platters would also reject vibrations better as well as reducing most resonance in the platter.