On Mon, 24 Aug 2009 13:39:28 +0100, Richard Lamont
wrote:

What you need is a nice thick sheet of neoprene rubber instead. Then the
sound will come from your speakers and not from whichever bits of your
building happen to radiate the coupled vibration. If you have carpet and
underlay then the neoprene probably isn't necessary.

What's the "speaker"? The drive unit? That plus the box it's in?
That plus the room it's in?