"Raul mentions the heavier the platter the higher the resonance frequency and there is no practical way to dampen an air thrust bearing. All you can do is adjust the frequency it resonates at"
Not so. A properly designed platter does not resonate. Walker uses lead loaded epoxy, so I understand. Nottingham uses sculpted cast iron topped with carbon composite. TechDAS uses 5 layers of metal, according to their literature. I use sculpted cast iron topped with an inch of graphite, 45 kg, and although each section rings (near 500Hz and 2000Hz) the combination is DEAD.
Further, not all air bearings are created equal. I use porous graphite air bearings, which acts as a final damping filter.
"I think terry9 fails to realize that an air bearing and drive of any nature provide more than enough energy to get things going if the table is not well designed"
Think again. I suggest that you listen to an air TT that has been properly thought out.