Just did this little install at the beginning of this week. Only took a couple of days, but the finished product is better than i expected.
Subs: 5 JBL Power Series 12's
Amps: 2 Kicker IX1000.1's (wired to 1.78 ohms each)
A little back story. So, when i received the truck all looked good. Come to find out 3 of the subs are D4's and the other 2 are D2's. After doing something thinking, i have the power evening distributed to the 5 subs with some tricky wiring. Didn't know if it would work, but finished product is very loud and clean, and all the subs load the same.
Box is 12 cubes with 170 sq. in. of port tuned to 33 hz. Smashes the lows but has a fairly flat response. I know some of you will question the single baffle, but with the 3 2x4 braces inside, the baffle doesn't flex a mm.
With a little tuning, the ear-o-meter is guessing a 146-147. Not bad for ~1600 and 5 entry level subs.
Second time building a wall and i think i covered everything, but if any of you have any other comments i'd really appreciate it.