Isolate It! Rubber buffers / damping feet sorbothane, hemispherical shape, non-slip, self-adhesive, 70 durometer, 5.08 cm, 4 pieces (tool)
I've decoupled with these cushioning feet from sorbothane my speakers from the parquet floor. This works great! It roars no more, it swings with nothing, the sound is contoured and just the bass come now more precise. But you have to tune the buffer
