[Calgarian5355]

I'm getting a new pair of PMC FACT8's soon, and was told by my dealer to add a piece of granite/quartz underneath the speakers.
I live in a high rise and have cement floors covered with wood laminate.  What Herbie's devices would you suggest under the granite slabs...and what should I use under the spikes of my speakers?  The speakers have outriggers on them.  Also how many devices should I place underneath my granite slabs?  Thanks in advance!

[JakeJ]

Hi!  Here is what I used under marble slabs I placed my EB1i's on. One on each corner, I tried a three point arrangement but it was too unstable for my liking.
https://herbiesaudiolab.com/collections/loudspeaker-rack-decoupling-and-isolation/products/herbies-fat-dot

Maybe these for the spikes:
https://herbiesaudiolab.com/collections/loudspeaker-rack-decoupling-and-isolation/products/cone-spike-puckies?variant=12645106810935

Just a couple of ideas as there are many isolation products on the market some research is needed to find the right product for your situation.