I just got the eclipse titanium 12... I built that box this winter with some buddies, we got confused and it's dimensions are WAAAY wrong, yet it sounds pretty good, and i relaly don't care right now : /
THe system is designed (and wired) so that it can come apart really easy when i want to race the car, and i can take it apart in less then 10 minutes almsot...
everything is bolted down to a wood board i made, and carpeted... really doesn't look clean and i lose a trunk.
I had to take apart the whole back seat to fix these damn rattles, it was a pain in the arse... Right now it sounds really good, i got my alpine m1000 class d running at 1000 rms 2 ohms stable, and let lme tell u, that titanium can SLAM, i mean my car can't even give it enogh current in it's guage (4 to the back) to keep this amp from cutting out, i haven't even maxed this woofer, yet and it slams so loud it's unbearable to me.
I've heard louder systems, but i'm trying to just get sound quality, and the mbquart front stage i have is definatly shrill, detailed, and LOUD.... It makes me think i'm getting too old for this stuff hehe. 150 x2 to the front components, rear doors aren't hooked up in this config.