The suggestion to check the TubeTraps web site was a good one, since they have a constrained layer system for use with sheetrock that is very good. You can also use a material called "DexDamp" which is cheaper, using a half-sheet every several feet between two layers of sheetrock. I have purchased quite a bit of acoustic treatment material from a marine supply outlet here in Seattle. They sell "DexDamp" sheets, as well as a material called "Sonolead", which is a 2" blanket of acoustic fiberglass with a heavy vinyl septum in the middle. The "Sonolead" can be used in the ceiling, or mounted to sections of peg board to make excellent baffles. The also have several different types of acoustic foam. HamiltonJet ships around the world, so you'll have no problem getting what you want. The web site address is: www.hamiltonjet.com
New Dedicated Audio Room
I am in the initial stages of buying and building a new home. This home is going to have a dedicated audio room. (Approx 18'x 26') I will be working with the builders regarding the room and want to hear some suggestions regarding sonic improvements. I plan on using Hubbell outlets with 4 dedicated AC lines. I am also going to have the builders use thicker sheet rock for the walls and ceilings. Any other suggestions??