Hi Jon,

The bad news is that square rooms are the worst possible dimensions for standing waves, which produce areas of exaggerated bass frequencies and regions of cancellation that are dictated by the dimensions of the room.

Don't stuff anything in the M3ti's port. You'll change the integrated design of the woofer, enclosure size and venting and the results will be unpredictable and degrading to the response. There are better ways to alleviate your difficulties.

Do you have your speakers on stands? How high are the stands? The trick to reducing the effects of standing waves is to place the speakers so that the distances between the M3ti's woofer (and its diameter), the floor, and the nearest wall (either behind or to the side) are all odd numbers and different--not multiples of each other. Since the M3ti has a 6.5-inch woofer, make sure you don't have it on stands that are a multiple of that dimension; likewise the distance from the rear wall. Also experiment with moving the futon couch. Where you sit is just as important as the locations of the speakers in terms of standing waves that cause "boominess". Try moving one or the other at first (the speakers or the couch).

That should help, but you could try an asymetrical setup of the M3ti's, perhaps firing diagonally across the room. An area rug with a spongy underpad would certainly help, but it won't fix the standing waves.

Good luck and keep us posted. By the way, forget egg crates. They won't help.

Regards,

Alan Lofft,
Axiom Resident Expert (Retired)