A Copernican View of the Turntable System

that there really is no such thing as "no plinth"

Well....depends how you define 'plinth'?
Of course, if even a wire cage can be called a 'plinth', then perhaps you're right?

I like Raul's proposition ( we're back on track Raul :-))...the 'best' plinth is 'no plinth'.
And I also agree with him that we still haven't heard from anyone who has listened to a 'plinthless' TT and found it wanting? As Raul says

we don't have yet a contrary experiences yet.

Only hypothetical theories about why a plinth must exist?

In any case, I was lying awake last night thinking of this and I wondered......if we can take the 'plinth' totally out of the equation, then there can be no argument?
There are now many turntables utilising magnetic drive of the sub-platter and/or magnetic separation of the main platter from the sub-platter.
As Clearaudio claims about their Statement turntable

Magnetic driven sub-platter, with absolutely no contact to the main platter.

The DaVinci AAS Gabriel MK2 has similar magnetic separation of the main platter.
Unless I'm missing some obvious physical law here, I'd be tempted to claim that the 'plinth' in these situations can have no effect on the sound produced?

Puh-leeze. There is NO ad hoc argument that wins this debate. The Clearaudio Statement looks like an over-sized, over-priced turdball to me. But in any case, magnetically levitated platters in belt drive turntables are irrelevant to this discussion. I will agree any time that in my experience, plinthless is the way to go for belt drive. But that is beside the point. "Every time I think I'm out [of this discussion], they pull me back in." (M Corleone, Godfather III)

"But don't ever take sides with anyone against the Family again. Ever. "
Michael Corleone

Dear Halcro, don't just think of "plinth" as a wooden "cage" around the bearing and armboard. Take plinth rather as the "common ground" of both - bearing and armboard - and you have the answer.
Again - if you are looking for real arguments, do seek shelter in the arms of our good old mother physic (at least as long as we are standing on this good earth...).
It may still not really sound tempting to all or most, but the already cited force vector diagram will shine more than just a faint light here. It will fully illustrate the position of raw physics and the depending of the individual parts of the system to the whole and to each other.

Cheers,
D.

DT, Sometimes, I don't get it. Show us how to derive a force vector diagram for a turntable. Then we will believe. I think the crux of the matter is that there are subtle forces, apart from the obvious ones, that make a critical difference. And for any specific example, those small forces will be different.