Using Granite under speakers


I am considering using slabs of granite under my Von Schwiekert VR4SR speakers which currently sit on spikes on discs on suspended wood floor. Have been reading that such arrangement as I have now can bleed bass into the floor and reduce bass impact and definition. Any one with experience with using granite like this? And do you then use spikes under the speakers directly onto the granite? How thick does the granite need to be for best effect?
Thanks
Joe
128x128gammajo
I have the same room conditions. I've used granite under my box speakers for 10+ years. The bass is much tighter. I tried Sound Anchor stands with my B&W 801 a few years ago and the granite performs better. I gotta get off my duff and sell them stands.
SYMPOSIUM SVELTE is much better natural,great bass, wide stage etc. Granite sounds like a rock very bad.HELLO!!
Be careful with that last post , the Symposium system works well with some speakers and awful with others , been there done that . Try before you by .
You could also try Boston Audio graphite tuneblocks either what they specifically intended for spiked components or their blocks with tangsten ball for electronics. I use the former with excellent results on wooden floor.
Thanks for all the responses. I am also considering Stillponts Ultra's, pricey but sound very effective