***Now in a turntable how it plays out is that instead of being scary or dangerous, it works out as a coloration: the platter must be as tightly coupled to the plinth via its bearing as possible, in turn the plinth must be absolutely rigid and acoustically dead while coupling the platter bearing to the base of the arm (which in turn should have no play in its bearings). Any divergence from this formula results in coloration.
The reason is simple: if the platter has any other motion other than rotation (for example a slight up and down that might be imparted from the plinth due to room-borne vibration), if there is any difference between that and the base of the arm the cartridge will compensate (since the stylus has to stay in the groove) with stylus motion and therefore a coloration.
So if the arm is sitting on a separate structure from the plinth, it is open to motion in a different plane and/or frequency as opposed to the platter and plinth. You really want it to move in the same plane and frequency as the plinth so that whatever that motion is can't be interpreted by the cartridge.
I am often amazed at how poorly understood this concept is. ***
This concept is a gross oversimplification and isn't thought through. Airborne vibrations will be imparted to the platter (record), plinth, and arm at roughly the same time. There will be a delay as these vibrations are then transmitted from one to the other. This results in additional smearing/coloration. It could also result in greater amplitude and additional coloration.
This is not better. It's worse, assuming the pod approach is well done and resists cross coupling. There will still be some cross coupling through the base, but it's less likely to produce cross coloration if the base resists vibration transmission and the pods are mass coupled.
It's a fallacy to assume that vibrations appearing at the main bearing are best transmitted to the arm.
***According to them the separate tonearm pillar version sounds more transparent and quieter because of the isolation of the tonearm from the TT.***
No good reason to assume this is false.
Regards,
