Okay, im purchasing a 12" alpine type x. great. My problem is i dont know how i should box it up. Should i use a sealed box, and get the most punch and sq out of it? or should i port is and get some extra rumble? Im going for a setup between sq and sql, and i dont have TOO many watts to power it, but im gonna try without getting a new amp. I was wondering how big my box volume should be, and what port freq to have it tuned to. Its going in a 1991 nissan 240sx hatchback.... very small space, but i would like to have ported if possible. Any suggestions?