Wouldn't it be a LOT easier just to get an inexpensive wall-mount tt shelf, and mount it to a concrete outer wall, preferably in an isolated environment (like a closet)?
For approximately $100, and maybe ten minutes of your time, you've got mechanical isolation that's about as good as it gets...
For approximately $100, and maybe ten minutes of your time, you've got mechanical isolation that's about as good as it gets...