Granite Slabs


I've seen a few systems here that used granite slabs under speakers. Where would one find these cut slabs to size and how thick would the granite need to be to support 225lb speaker? Looking for 2 pieces cut about 20x17x1-2", any help would be great.

TIA

sqitis

@skeptikal . Sorry I wasn’t more clear. Yes I spent that amount for my kitchen counter tops. If you go to a stone store , or a granite fabricator you can get remnants for pennies on the dollar. 

I bought mine from a tombstone maker they have larger sizes (thinkness) then counter top makers. Note polishing is something to consider as it increases price the more glossy the finish. If your happy with a mate finish its much cheeper. 

@sqitis 

As stated above if you are on a suspended floor you need something to mitigate vibration. Your speakers are heavy so if you are on a carpeted concrete slab like me the effects will be minimal. My speakers weigh 220 pounds. I don’t think any difference in sound with the podiums is from the small amount of vibrations in the concrete floor. 

@ghdprentice Do you have any experience with or thoughts regarding IsoAcoustic GAIA feet for speakers?  Thanks.