I agree with the above comments/suggestions. At a prior home where I had a pier/beam foundation, I used marble slabs (but did not bolt the speakers to them) that I found at a rock shop while traveling through Arkansas. The results were impressive (ditto previous comments). I am currently in a home with a slab foundation and have spikes that go through the carpet and pad straight to the foundation. The results a very similar. I still have the marble but it is being used for other applications (in the backyard). Bottom line: Use spikes if you have concrete under your speakers. If not, plan a vacation! :-)
Marble to place speakers on?
I remember reading a thread pertaining to placing your speakers on a marble surface. Up to this point I have been unable to find this thread on the audiogon site. So I am going to ask the question again. What should the demensions of my marble be? Height, Width, Depth, and Thickness. I appreciate your time.