Well, we ended up ripping a 2x4 pressure treated stud (hope that doesn't make it lose its pressure-treated values...) and kind of doing a makeshift staggered stud wall on one half and a normal one on the other side. It should be better than a normal 2x4 wall at the very least, right?
Has anybody done staggered stud walls for other rooms other than theaters? I was thinking of having them do one between our main family entertainment room, which will have our plasma screen, and a future bedroom.
If these walls are as good as advertised, I wish I would have done them everywhere.