i have 2 aq sdc2.0 12's and 2 jl 12w1's not being used for anything atm. for 1 of the 2 sets im thinking just for fun it would be great to try a bandpass box for these just to find out how they would sound. however i know very little about building bandpass enclosures. from what i have seen on google and what not im thinking im going to want both subs firing into the sealed chamber with each magnet side ported. i have no idea what size volume per chamber(cuft) that i would need or to even try for. if anyone could help, teach me, or even have know good spec to go off of i would be very grateful.