I have a fairly large opening in my theater room that I want to close up. I can cover it perfectly with a couple of sets of bi-fold doors. They would pretty much block out all the light, but I'm worried about them rattling when I start running some serious SPL's thru there. I've got a SVS 20-39+ and will probably be upgrading to some larger Rocket speakers this year. The opening is in the back left corner of the room, opposite the SVS, but there is a huge sofa between the two to absorb the immediate impact. Anybody have any problems with bi-fold doors in your theaters? I can put in a regular door, but it would be kind of a pain because the area is already finished. I can sneek the bi-folds up without too many problems.