I'm designing a box for my 03 s'screw. Putting my box in in the back, i removed the larger seat because I didn't buy an s'crew to chauffer people around in. I have two 12" subs and was curious what type of performance gains, if any, I'd get by designing a single box to include a Bandpass section (for the 30-50hz) for one sub and a sealed section for the other sub. Would that throw an weird imbalance to the amp (mono par. output)? Would that even work? Am I out of my mind?