Isolation platforms for turntables

Congratulations on a great system. Also thanks for posting your system with pictures. It's very helpful for thinking about your situation.

There are any number of threads on this topic, but I would strongly recommend that you reposition your equipment rack so that it is not between your loudspeakers. Hopefully this will also move the turntable so that it's a significant distance from the loudspeakers. Do a search of the the archives on this issue. The short version is that a large rack between the loudspeakers diminishes the soundstage/imaging performance of the system. I suspect your loudspeakers effect your turntable more via airborne sound waves than any structure coupled vibration. The only real solution is to move the loudspeakers farther away from the loudspeakers.

As far as a specific isolation platform, I would ask the people at Clearaudio what they recommend for your specific turntable.

I agree that you should not have all that gear between the speakers if possible. A lot of times it's not possible though and you have to work with what you've got. It's quite amazing how much difference you can hear though when you move your racks out from between your speakers.

As far as isolation of the turntable. Pretty hard to beat the vibraplane.

12-19-13: Onhwy61
I suspect your loudspeakers effect your turntable more via airborne sound waves than any structure coupled vibration.

12-19-13: Elizabeth
The other way would be more mass in the TT stand.

I'm certainly no expert, but I agree with the 2 above statements. I think what makes most sense is to try to get those airborne vibrations out of the TT. So the TT coupled to a heavy base is what I would do. Actually what I plan to do over the Holidays with my table (Spikes on my TT and sitting on a sandbox I have yet to make).
That, as opposed to damping / something soft under the TT. If you do that, the airborne vibrations have no place to go.
I also recently moved my rack back closer to the wall and it seemed to help.