I used Dynamat sandwiched between 3/4" MDF. Dynamat is a vibration damping material sold at auto sound places (Circuit City, etc.). It has adhesive on one side and I used spray adhesive on the other to bond to the second sheet of MDF
"sandwich" platform for amps
I want ot build a "sandwich" platform for my monoblock amps. I undrstand a "sandwich" approach is best, that is, maybe 3" of acoustic foam layered between either mdf or maple wood shelves. Where dos one buy acoustic foam, and what kind is best; I know it must be very dense. Thanks, larry