On Tue, 8 Jan 2008 07:47:20 +0000,
(D.M. Procida) wrote:

Would speaker spikes help cut down the sound transmitted to the
occupants of a flat on the floor below? If not, what would?

I believe the floor is carpeted, and the speakers are not very huge
anyway.

No, they would make it worse. The carpet provides a minimal amount of
isolation. Spikes would destroy it.

You can fiddle around and reduce transmitted sound a little. The only
real answer, apart from major structural work, is to play the music
quieter.