What do you put underneath floorstanding speakers?


I have B&W cdm7nt speakers on spikes and I was wondering if there was something to put underneath the speakers to improve the sound and also possilby reduce the sound in the apartment below.
ice2000
Star Sound Technologies. I tried their Audiopoints first and what a differnce. The soundstage increased in height and depth. I have since then moved up the food chain and purchased their Sistrum Sp-1 to go under my speakers. I have not received them yet but I will comment when I do. They offer a 30-day money back. This has been my experience and I am sure you will get other ideas. Whatever you choose I would encourage you to hear it in your system to determine if it is a right fit.
I usually place the floor underneath 'em, keeps them from falling thru to the ground...[smirk]

-RW-
My speakers are spiked & on top of 18" square 2" thick pads from your local Home Depot spray painted black. Or some store bought granite slabs for the big spender.
When I first did this there was a noticable improvement in sound.
Hey Speedball: 18" square 2" thick pads OF WHAT?

Inquiring minds want to know.

Thanks.
Rlwainwright, Damnit, you beat me to it.

I got hardwoor floors, i spiked my speakers and set them on top of granite slabs which rest on the floor with rubber feet.
Works pretty good for my purposes.

WIth yours i would reccommend putting a house beneath them. Best way to do it. ;)