I have recently gotten a 1996 328is, and after doing the measuerments in the trunk I have come up with a box that will yield roughly 1.5 cubic feet per sub (2 subs) in a seperate chamber set up, or 3 cubic feet of shared space. Now my question is, which would sound better? The shared space, or keeping the subs seperated? I'm going for sq and not spl on this, so the answer would relate more along those lines.
The subs are 2 12" mmats pro series btw.