Here's a good article, he speaks of bookshelf speakers, but it should give you the idea
http://www.st-and.demon.co.uk/AudioMisc/cones/speak.html
As for floorstanding speakers - I say put them on a marble plate and then spikes.
Texas Faggott - Petoman's Peflett
http://www.discogs.com/release/57381
Eraser vs. Yƶjalka - Round 1
http://www.discogs.com/release/99703
Various - Schizm
http://www.discogs.com/release/314346
The next time I'm going to the post office will be for Sanatonic Audio
Charlie, do you run you audio system through a separtate cord from the central power board?
(I'm drunk, couldn;t remember how to say it properly, but hope you get what I mean )