"Andy" wrote in message
...

I have 4 speakers in my apartment.
I would like to minimize the vibration transmitted to the floor.
Right now, they are sitting on towels.

This transmitted vibration suggests the speaker cones are
causing the speaker case to vibrate. This suggests poor
design of the speaker case (wasting energy that ought to
have been output through the speakers) but you may not wish
to rehouse the speakers -- just to reduce contact between
the cases and the floor. The cheapest way to do this is
to hang them on wires from the ceiling.

--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)