We are working on our first dedicated home theater room, and are to the point where we will soon mount the in-wall speakers (Theory Audio iw25s) and subs (Theory Audio iws12-6s). I'd like to isolate these from the studs to minimize transmission of acoustic energy into the structure. Are there rubber washers / gaskets I can use for this?
Assuming that your system includes subwoofer(s), you would set the High Pass crossover for these high enough that they shouldn't cause problems, but that depends on the construction of the building- is it new, or pre-existing? If disturbing the drywall won't cause problems, you could build a back box that's either made from rubber sheet and allowed some space between the sides and the studs, or fasten horizontal framing above and below an MDF back box that's held in place by rubber blocks screwed to the horizontal members, then the back boxes are screwed to the rubber, for isolation.
I haven't heard of in-wall speakers causing structure-born problems, but HVAC ducting and sound passing to an adjacent room are frequent offenders.
