@jallan I’m not as well versed on granites and types of rocks as you, just going by what I was told. I don’t doubt anything you’ve said. I definitely agree that Valerio Alcora is a very nice guy and great rep for his company. I emailed the company with a question regarding setting up the rack and he actually called me himself and walked me through it. This rack weighs about 250lbs w 5 shelves and definitely improved the sound.
Improving a stone rack
Hi all, I have a large stone rack for my system, in beautiful granite, which works great for stability, but maybe not so good for other aspects of the sound. I wonder if it contributes to some treble ringing and harshness. I want to improve the sound, thinking of felt damping on the wall behind the rack, some form of cloth to cover the reflective surfaces of the shelves, and adhesive rubber type mats on the bottom of the stone shelves. Is this the way to go? Experience based advice is very welcome. My rack weighs a ton. It is not easy to compare to a wood or composite rack. I need advice on how to counter the sound problems of stone or similar polished surface shelf racks. I want to try this, before I consider a new rack or shelf arrangement.