I hope you have the dual 1 ohm version. You will need to wire is in parallel. run a wire from the + of one coil to the - of the other coil. Then hook the remaining positive and negative coils to amp accordingly. The kicker zx series is only 2 ohm stable. If you got the dual 2 ohm version you will need to get a new amp, or get the ZX moded(if you feel ambitious). For daily, i would tune around 30-35 hertz. I dont trust myself to give you sound box dimensions, just make sure it is sealed, and well braced. box flex will hurt your SQ/SPL.
alright thanks..it is a dual 1 its a 15" i listen to rap ,reggae, 311 type stuff i was gonna get a box built for me for spl but the box i'm planning on building is my daily listening i just picked up a 8x4 peice of 3/4 mdf some screws all the stuff...just need some dimensions...also my turnk is only like 17 in high so i need the sub facing up