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
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Showing 2 responses by tmsorosk

Granite works well in some cases but not always . Sandstone is the best , three inch thick and as wide and long as possible . I've used MDF filled with sand and lead too . Coupling a speaker to a wood floor that is not really solid with spikes can activate the floor , great for movies but not for music .
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 .