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 5 responses by fishwater

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?
I have decided to build a sand box isolation base. I am starting on it tonight & will let everyone know how it works out.
OK, I am staining tonight & this will be finished. This is what I did. The base is 16" X 21" plus 1" thick sides mounted on the outside of the base.

I cut 3/4 MDF for the base & top. I cut the top 1/2" smaller than the bottom. I used poplar 1 X 4" for the sides & nailed them to the MDF base in addition to using some liquid nails. I used 45 degree miter cut's on the corners to look a little pretty. I filled all the nail holes in with some putty & sanded. I am staining the base & I painted the top cover black. I will coat everything with polly & fill the base with a 50 lb bag of playground sand I purchased from HD. I also purchased some simple & cheap rubber feet for the base but do not know yet if I will install them, I may end up trying some iso nodes instead. All told it cost me about $40.00 for the materials but I already had some scrap 3/4 MDF lying around.

I plan on installing some cheapo adjustable iso points feet that I purchased from parts-express under the turntable & placing on the top MDF cover that I built. I don't have alot of money into this & if nothing else it has proved to be a fun project. I will set everything up this weekend & see how it sounds.
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.
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.