dkilpatrick
Makes guitar faces
To decouple the cab from the floor, the Gramma foam stuff works pretty well. So if you want true decoupling, and the elimination of structure-borne low frequency vibration, which does cause noise, the Auralex Gramma is a good product.
I just picked up a gramma to put under my lonestar special 1x12. Definitely reduces the bass transfer to the floor.
It's still there but now it's not overpowering and I can get a better eq balance. Good product for what it does, I would recommend