Turntable placement and isolation

FWIW, before you try anything elaborate (and expensive) you might try just placing a solid piece of wood on the carper (not on points) so the effect of the carper and its pad is spread over a wide surface and put your turntable on this and see what happens. I doubt that foot falls would be an issue - foot falls more often occur with suspended turntables which can just bounce like crazy. Personally I'd be more concerned with the effect of sound waves - bass notoriously live in corners and at wall boarders and this is where your turntable would be (I think).

indranilsen, I think you know where I was going with this but, in view of other comments I thought I'd amplify for what ever that may be worth. 

Needfreestuff is absolutely correct - 1)Wood floors can be lossy (as hell) and 2) I too would never place a turntable on a wooden floor. That said...

My thought was, starting out as I suggested, you would find out if the combination of carpet and pad under the 'board' sufficiently reduced vibrations from the floor. If so you might not need (as opposed to want) to use mass loading onto the floor. You might want to introduce some vibration reduction (insulating) materials under the board supporting the table(as in a boxed enclosure, like a sand box, with sand or thick latex foam) directly on the carpet. And don't be shy, jump up and down a couple of times and see what happens. If the arm doesn't jump out of the groove you might be good to go. What I'm getting at is trying to isolate the TT from the floor.

 If it does the first thing I would explore would be shoring up the floor under the TT. A pier or shim might do it and it would be cheap (if you can crawl under your house). If that works then you could mass load to your heart's content. Hell if you want you can even play with springs, although I must say I think springs introduce more issues/problems than other forms of isolation. 

I'm probably just a cheapskate but I find little on the market that has ever interested me, although highly touted (and overpriced). I think TT set up is the last great DIY opportunity. Enjoy. :-)

Indranilsen, Well that pretty much rules out anything that is 'anchored' to the floor. You might try mass loading but frankly I doubt that that would help much either., the floor would still transmit foot falls.  Wall mounting might be your best solution if the wall is well constructed and you can find the vertical 2x4's to anchor it to. If your wall has 2x6's that's even better.

Good luck. :-)

indranilsen, If you're not in love with the results of #1 and don't/can't do #2 you might consider a different  TT with a spring suspension where the springs are between the top of the plinth and the supporting plate for the arm and platter. I used and appreciated an Oracle for some years. The only issue I ever had with that TT was getting the springs balanced out when I put on a different arm and the spings where easily adjusted. I never put springs under anything - for me its counter intuitive.