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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
fishwater OP
178 posts
 
I don't really know how to support the floor better. My room is located over my garage & I use the garage for storage of vehicles. I couldn't put a bunch of support collumns under the floor because it wouldn't allow me to park any vehicls inside.

At this point I would rather not put up a wall shelf but it seems to be my only option.

I am pleased I made the sand box, it was fun & came out great. I plan on using it under the turntable regardless so it wasn't a waste.
zargon's avatar
zargon
453 posts
 
Fishwater, I have a listening room over the garage and have put in two simple ways to reduce the amplitude of floor vibrations. First, lag bolt 2X6s across the joists down the middle of the floor. Second, put a single post in the middle of the floor in between the two cars. If you put it forward of the front doors, it will not interfere with getting in and out. This combination will significantly raise any floor resonances and their magnitude.
macrojack
1,303 posts
 
Perhaps rather than hanging a shelf on the wall you could just attach the existing rack to the wall so that it cannot rock when the floor flexes. In my case, the motion that caused the problem seemed to be horizontal, not vertical.
fishwater OP
178 posts
 
As an update, I cut some raquet balls in half & installed them under the isolation platform. It certainly helped with the footfall issues but if the TT does get moving the balls keep it moving, the needle bounced almost half way across the record until it stopped. Under normal conditions of moving around in the room the raquet balls are a definite step in the right direction.
surfgod
229 posts
 
Build your own. I have an old AV clamp rack where inbetween I clamped two cinderblocks & some cut 2 X 4's to raise platform. Using spikes & cones, a level you can construct a wonderful turntable stand. I can actually jump up & down right next to my table while playing and does no skipping whatsoever. The clamp rack was by I believe Michael Green......Enjoy.
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