I have a 10in JBL GTO sub, and the rubber surround is coming off of the cone, and well, it sounds like shit obviously. Sounds like the woofer is slapping inside. So I put a lil silicone adhesive in there to seal it up. Obviously that isn't going to cut it.... So I need a new sub, I'm thinking of going with a 12in, probably a shallow mount so I can make a fiberglass enclosure built into the side of my trunk. This was supposed to be my summer project, but now I have no sub. Any recommendations? I want sq over pure output. Nice clean deep bass..I listen to metal, techno, most genres of rock, no country, very little rap/hip-hop. My JBL was decent for what I need, but I want something a little better this time around. Forgot my amp. Its JBL Grand Touring Series GTO75.4 Rear channel is bridged. So I need a dual 4ohm voice coil sub.