hmm...well here's what my friend has in the back of his 5g accord
-1 Kicker 12" L7 in a ported box made by me(just use kicker specs for the SPL box)
-1 Planet Audio P1250D amp runnin at 2 ohm load
the amp is a little extra power for the sub...it's puttin out 850 watts RMS at 2 ohms...get the 4 ohm DVC model and wire it up in a parallel circuit...it hits very hard for just 1 12...it will shake the glass at my work...everyone likes it...
BTW, sorry to make this a 4sale kinda post...but he's sellin this system...wantin 550 but i think you can talk him down a lil' if you get the money quick..you get the sub, amp, and 2 boxes...PM me if you're interested