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What is under your TT, cheap islolation?

I am looking for a way to isolate my turntable without using a shelf bolted to the wall. I am trying to save money while I re-configure the room. For now my turntable is on top of my stand but you have to tip toe around the room. I am wondering if a big rock iso platform (or DYI version) or some iso nodes under a butcher block would help with the bouncing turntable? I have two tables I am testing at the moment, one is a Thorens TD-160 & the other is a VPI HW19 MKII, both of them suspended. The floors are pretty sturdy, it is a dedicated room over my garage with serious supports built in to the floor.
fishwater
macrojack
1,303 posts
 
I found that the energy causing my problem were horizontal rather than vertical. The equipment stand actually rocked very slightly with the flexing of the floor. If that is your problem, you may be seeking stability rather than isolation. That is where the wall cleat might come in handy. Or the wall mount.
astock
30 posts
 
My Linn deck rests on a 3/4" slab of slate of the same footprint. The slate sits on three ball-in-cup feet and the whole stack rests on a 6' side table located along a wall. The three mushy feet allow for damped vertical and lateral movement. The slate, about the same weight as the deck, worked better that just supporting the deck alone on the feet. Sending the kids to a friend's house works even better.
zargon's avatar
zargon
453 posts
 
Fishwater,
Like you, I built a sand box with a floating lid to go under the TT. If you are setting the box on a shelf or other flat surface, I suggest you elevate each corner in order to minimize the box from absorbing any shelf resonances. A simple solution is to drive a small brass screw up into each corner of the box from underneath. Leave the entire head showing, and it will act as a small spike.
fishwater OP
178 posts
 
My sandbox didn't isolate as much as I would like. It was a fun project but I still have the skipping problem. Short of hanging the TT from a wall shelf what can I do?
dan_ed
2,451 posts
 
I was afraid of that. The problem is the sandbox is great for vibrations but, obviously, it is bouncing with the floor as well. As others have mentioned the real solution is to completely decouple from the movement of the floor. You could try moving to a wall or corner that has a load bearing structure beneath it in hope that the floor bounce won't be as severe in such a location. Otherwise, it's either the wall shelf or hanging it.

BTW your sandbox could still be of benefit on a shelf.

Don't give up!

Dan
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