In the sand box

Being a professional woodworker I have designed and built audio racks using custom  designed sand filled isolated shelves. Since silica sand is getting hard to find I like to use a quartz based media blasting sand very similar to the article listed by soma70.  Mineral based sand has all the same properties as silca sand, clean, dry, and uniform grit size.  If you want to eliminate as much vibration as possible its important to have several layers of dampening and let your sand filled isolation shelves float . As we know, when you isolate your components from vibration with a quality rack it helps squeeze the maximum performance from your system components.  One of the benefits of vibration isolation dampening is a very black almost spooky background.

Paul

@waytoomuchstuff + 1 

Sand in the bottom of my Vienna Acoustics Bachs made a difference. Tighter more solid bass. There’s a plug in the bottom and a chamber built for sand. The owner’s manual describes what to, how to load em up. Also loaded up bookshelf speaker stands with sand, works great. You can buy “sterile” beach sand on Amazon designed just for such purposes. 
 

Hey, if it sounds good/better, then it works! 

Here’s a post from 2004 by Barry, of Bright Star Audio.  He started tweaking in 1985.

Since my listening area is on a suspended floor, several of my components are on Bright Star sand boxes - along with aftermarket footers.

@waytoomuchstuff  +2 

Lmao