I drew this up tonight. It's a 3/4 piece of MDF 24" x 36" with 2x3 frame, it has a 6.5 dia hole that the speaker goes through and has a clamping type of setup so your holding the speaker by the magnet. I wonder how bad the phase issues would be? I'm trying to get them as close as possible and This is about as close as you could physically get them I think. also trying to get the open sound of an open baffle along with some good bass. If anything else it it'll give you a good laugh.