Hi BC. I don’t think making a box will have much consequence. In the context of 7.x.4 system and what those speakers are doing, you shouldn’t notice anything. If anything, it might help bolster the low end, but I’m sure they’re crossed at 80 or higher anyway. I say go ahead and box em up. If you do end up with a bass bump, I’m sure audyssey will pull it down. Whose to say it won’t sound better as well?