4th order bandpass
I'm thinking of constructing a 4th order bandpass box for my sub, but I'm ambivalent right now because I do not know the following: what is bandpass ripple, will I see any loudness difference between the ported box I have now (32Hz with 2.5 Net) and a 4th order bandpass I will build with a gain of .4635, I don't know what the cabin gain for my car is, 96 Civic 2Dr, and I'm wondering if I get the box to have a flat response curve will the cabin gain make it sound like crap, and do you think a low 3dB rolloff at 30Hz and a high 3dB rolloff at 71Hz will sound decent?
Vehicle: 1996 Honda Civic EX
Head-Unit: Alpine CDA-9856
Subwoofer: 2 12" Fi SSD
Box: Sealed: approx 1.1ft^3 per chamber
Sub amp: Kicker ZX1000.1
Components: JL XR650-CSi
Comp amp: Profile AP1000
Before you accuse me, take a look at yourself.
Refs: phrozen5100, 1meanGTA, famous_78