Turntable placement and isolation

@millercarbon- Thanks for your feedback. Your system looks nothing short of spectacular and it is very advanced. I guess I am just a beginner...
I am a believer when it comes to isolation and seismic vibration control. I spent some time with springs and roller blocks to build my DIY platform for all of my components but couldn’t complete the project. The mass-spring low pass filter concept does work but the key challenge is to figure out the optimal combination of load and the natural frequency of the springs which will bring the resonance of the component and platform together to 3-4 cycles. The other challenge was to find a surface which will not ring. Many suggests marble, granite, etc for adding the mass but in my experience these natural stones without any damping always tend to ring. Then you get to handle the damping of these surfaces as well. It is at that point I kind of decided not to spend any more time on this research and may be look for a commercial product which is always going to be very expensive. 
So please keep in the loop with your spring isolation work.
On a separate note, did you notice any imaging degradation when you introduced the taller rack behind the speakers?
Thanks

It would be a lot easier for us to give you recommendations if we knew a little more about your Stereo. Wood floors are notorious for footfalls I would never never put a turntable on a 1 inch wooden platform on a wooden floor it’s like asking for trouble. All the best

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. :-)

Millercarbon has put into action what I'm always meaning to get around to. Concrete really is a superb material for an equipment stand. I would add to this reinforcement of your wooden floor or ideally removing (only if you own the house and it hasn't got a basement and is on the ground floor) a section of the floor and set you the base for your rack directly on the ground. An open fireplace can have the same effect and I have successfully set many a turntable in one with great results. The downside of the fireplace being its not quite the same listening to Jade Warriors Last Autumns Dream in front of a heater

@needfreestuff- In my two channel system I am using Aerial Acoustics Model 7T as the front loudspeakers, Bricasti M25 stereo amplifier, Bricasti M25 DAC/source controller. For the source, I am using Oppo UDP 205 (rarely used) as a universal player and Clearaudio Concept as the turntable. I am using mostly Nordost cables, Heimdall 2 & Frey 2 in my system. I also use Audio Sensibility Signature speaker cable and digital coaxial cable. I use two dedicated 10 guage circuits, Furutech GTX D NCF(R) receptacles and Nordost distribution boxes. There is no power conditioner in my system. My room has GIK acoustics bass traps at the corners and at the 1st reflection points on the side walls/ceiling.
Thanks.