I think it all depends on your turntable.... Linn tables love to be on a very light table since the resonance of that light table will be disipated by the suspension of the turntable. VPI's on the other hand love to have a heavy, solid table to rest on. I had a Thorens at one time, but don't remember what I used. I suggest you try different things and see what happens.Your Thorens has a spring suspension ...from what I read, you have a very solid footing for the table except for those viscoelastic barriers. Try removing them which would give you great solidity, and see if that is any improvement.
is turntable isolation required?
I have read opinions saying that solid plinth turntables absolutely require some kind of isolation platform to sound their best. Would you say this is correct?
my Thorens TD-850 weighs 21 kg, very solid plinth, sits on spiked feet that have a small, built-in layer of what appears to be viscoelastic material (presumably providing a very small amount of isolation), on a Billy Bags stand. Solid floor. I had it on a Bright Star (sandbox-type) platform, but couldn't really hear much difference, if any, with or without it.
If I'm likely to hear a real benefit an HRS S-1 platform looks appealing. Other recommendations welcome.
that it be cost-effective might be too much to ask, in this hobby.
my Thorens TD-850 weighs 21 kg, very solid plinth, sits on spiked feet that have a small, built-in layer of what appears to be viscoelastic material (presumably providing a very small amount of isolation), on a Billy Bags stand. Solid floor. I had it on a Bright Star (sandbox-type) platform, but couldn't really hear much difference, if any, with or without it.
If I'm likely to hear a real benefit an HRS S-1 platform looks appealing. Other recommendations welcome.
that it be cost-effective might be too much to ask, in this hobby.