Icarus, sorry you had all the issues with the SSV enclosure. Mine was near perfect. I just took the doors off and the top down, and the systems can overcome road noise, etc, without distortion. Jeeptree, let me know if you have any questions. I'm glad this thread has helped out.
Just finished last week The SSV enclosure for me was awesome The sound system is incredible with everything I did. Nalin inserts for 5.25 speakers in dash, new monster wire to each speaker, amps, 10" sub The jeep rocks
06 LJ Rubicon/Auto/RCV axles/5.13 gears/5.5" Triangulated 3F+4R-link Long Arm/Savvy Skids front to rear/Poison Spider RockBrawler Bumper/OFFROAD Walker Evans Beadlocks w/ KM/2's..ON ROAD MT Classic II w/ Xtreme Pro Comp & my DD
A sealed 12" subwoofer can easily only take up half of the space behind the rear seat of a standard TJ and have the correct volume dimensions, though that is specific per each subwoofer. Ported subs tend to be around 2X the required volume than a sealed sub, and then you need to add the port ontop of that aswell. The ported alpine type r 12 box i made fits behind my backseat and leaves me about 5-6" width of storage left on one side of the trunk.
04 TJ Sport- Kicker System, Smittybilt XRC-8 Winch, Cherry Bomb 18" Glasspack, 3" Zone Hydro Suspension Lift, 33x12.50 BFG KM2, 15x8 Procomp 7069, Aussie Locker front Dana 30, JKS 1.25" Body Lift, 4 100w Hella 500s