Want to build a rack with sandwich layered dampening


Hi all,

I considering constructing a very basic, small, low two shelf rack to accommodate my somewhat compact components to replace my rather resonant Pangea rack. Lower, not as deep and a bit wider to accommodate access, but also keep it low to preserve stage between the speakers in my smallish listening room. 
 

I’ve found some perfectly sized and precut maple (I think it’s maple will have double check). 3/4 to 1” boards that I’d like to sandwich together with screws, and place some sort of elastomer material between to control resonances. The legs would be basic but thick, and I’d probably just put spring isolators under them. Rack would be sitting on a raised hardwood floor. 
 

My question: would using a sheet layer of sound absorbing butyl or some type of elastomer in between help or potentially harm sonics? Reason I’m asking, I’ve found sorbothane to actually have an adverse effect under components, with say stack audio pucks instead a purely delightful improvement. I know we’re talking about a different application, but still would like to get some experienced thoughts on anyone that has done - or purchased - something similar. 
 

Big thanks in advance for anyone’s help! 
 

John 

riccitone

Showing 1 response by brunomarcs

I took some 4 pound lead sheet and covered both sides with dynamat extreme. I have 10 of these on my rack under the shelves sitting on a layer of exterior grade mdf, it's called extera, a little denser and has epoxy resins or other waterproofing elements in it, it was free OK. The rack must weigh 350 pounds. I cant  possibly move it, need to put wheels on it somehow. 
 

Im gonna use lead sheet again on a TT plinth.  I'm not worried about getting lead poisoning because it'll be completely covered.