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Turnable Rack Vibration

Hi,
I recently moved my Audio equipment to a VTI rack system. As part of the change by Linn LP12 moved from a Target wall shelf to the top shelf of the VTI.
The move has made the turntable far more susceptible to floor and foot fall vibrations... disappointingly and annoying so.
I would like some recommendations on effective vibration isolation for the turntable chassis. I have a 1/2" slab of granite that i am thinking of placing the turntable on and separating the granite from the top shelf of the rack with a series of isolators.
Has anyone had experience with this setup and what isolators would they recommend?
Of course i am also open to any other suggestions on how to best isolate the top shelf for the rest of the components.

Thanks
Neil
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Showing 2 responses by hornguys

hornguys
180 posts
 
Having faced this issue countless times, the only technique that consistently works is to fasten a 90 degree shelf bracket (which you can buy or fabricate yourself) to the top shelf at the back and to the wall. This will cure 95% of the problem.

Failing that, even wedging something between the wall and the back or the rack/shelf can help a bit, until it falls. :)

A vertically suspended turntable such as a Linn on the top shelf that is susceptible to footfalls is actually having to contend with some horizontal movement, which it cannot handle.
hornguys
180 posts
 
"Unfortunately, the tie-back solution is mostly effective against F/B movement. Much less L/R movement, and not at all for vertical movement."

When I've screwed fasteners from the bracket into the shelf and into the wall, and done so at either end of the shelf, f/b or l/r simply didn't occur. Might as well have been on the wall.

Also helps to mitigate vertical vibrations, but not entirely.

Total expense for this "fix" is under $10.
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