I stumbled upon this thread today while googling.
Found a cool thread, something about ask a mod anything... Anyway, he had a bunch of great stuff in there and it was 600 or so pages. So here I am.
Have a '16 Civic 4dr sedan. Eventually want to put a small box in the trunk (some style of bandpass) and port it through the hole/s where the current rear deck speakers reside. I don't care for rattling trunks and back in the day I always built bandpass boxes. Just liked the sound.
I started researching 6th order and apparently need to research more. LOL May just end up doing a 4th order instead but we'll see. Its not for some time yet so I have plenty of time to keep researching.
Favorite subs back in the day were Kicker.
I don't even know whats "in" these days.