Hey guys I have a zx750.1 and a cvx12 and its just not getting it done as far as loudness goes. Im looking for something more slamming, something I will see a significant increase in loudness from my cvx12. I want to stay kicker and I'm all for ported/vented boxes. I have an 04' civic so a 15" probably wont work. Im looking more into a pair of subs. I want the loudest subs but still have decent sound quality. I have looked at the kicker cvr's,L5's,L3's, and L7's. For some reason it looks like they got rid of the l5's? I wont be upgrading my amp more than likely cuz my lights already have a slight flicker and I dont want to do the big 3 etc. Make sure when you give me a suggestion also tell me the size of the woofer. Thanks alot guys!