Mapman, if you click on my system, and look at the pics for the Denon DP-80, I can tell you that screwdriver in hand, it would take me 2mins flat to remove the TT from the plinth (assuming it has no record on it - call it another 10 seconds plus the time to put the record in the jacket if as is). The Sony TTS-8000 pic is nude (i.e. wearing no plinth) so you can see what the structure of one of these is. It comes with mounting screws which are similar to the Denon mounting screws (one removes the platter, and mounts the structure to the plinth). I have not yet plinthed that one but a simple method would be to follow the CLD-style plinth recipes as outlined in the 'Home Despot' thread (or elsewhere on the net), with a cutout designed for this particular pattern of body.
As for vibrations... there are vibrations all around us. Putting a 200lb TT onto a table, which is mounted on a concrete slab, is OK. Putting a passive system like a vibraplane or similar underneath is a whole new ballgame. I cannot tell you why most of us cannot feel the whole world shaking beneath our feet, but in a a lot of places it does...
As for vibrations... there are vibrations all around us. Putting a 200lb TT onto a table, which is mounted on a concrete slab, is OK. Putting a passive system like a vibraplane or similar underneath is a whole new ballgame. I cannot tell you why most of us cannot feel the whole world shaking beneath our feet, but in a a lot of places it does...