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

Showing 2 responses by zargon

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, 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.