I am putting in a home theater in a room above my garage. It has a gabled (i.e. slanted) roof from the sides with about a 4 foot high vertical wall on the actual sides. Right now I have twin 20-39 SVS passive tube subs. The installer has suggested possibly putting these actually behind the drywall to satisfy my wife's desire to not put those monsters within view. The alternative is to camoflage them somehow or put them behind curtains in the front. Any thoughts, people? Thank in advance.