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Magnetic levitating turntable shelf-opinions?

I have seen two different types of magnetic levitation shelves/platforms for turntables, etc. These would not be hard to make and incorporate into a custom component rack system I'm currently working on.

Does anyone have personal experience with this type of product? Specifically, if you are using it for vibration isolation of a turntable are you satisfied that using such powerful magnets near a cartridge is not interferring with the cartridge performance?

For you scientists out there the magnets used are neodymium and yes, I realize how dangerous they can be to work with.

Thanks for the input,
Patrick
lugnut

Showing 1 response by edesilva

edesilva
768 posts
 
I'm no scientist, but wouldn't something "floating" on a magnetic suspension be more prone to move with airborne vibration? I thought the theory of vibration isolation was generally to solidly couple the platform to something that wouldn't move (i.e., the foundation). I guess you could make it really, really heavy, but you still have damping problems--if something is magnetically suspended and you displace it, won't it oscillate until friction with the air slows it down?

I guess, if you use electromagnets, you might be able to do something to change the repellent magnetic force dynamically and damp it... There's the idea--some form of active electromagnetic compensator. Then the only problem is finding a reference that is isolated and doesn't change.

; )

Seriously, I'm no engineer, but the theory seems flawed...
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