I made a pretty nice box meant for a 12" subwoofer and little bit of semi-secure storage in a TJ Wrangler. It fits perfectly between the seat and door and cannot be moved without folding the seat forward. I ended up disconnecting the release handle on my back seat to make this more secure. As for the subwoofer setup, there's a Polk 12" Dxi sub and the box has an inner size of .65 ci. The whole thing is constructed out of 3/4" MDF, screws and construction adhesive for sealing. I covered it with a thin grey carpeting. It is very stout and I would guess weighs about 40-50 lbs with the sub and amp. I do have an amp too. It's a JL 500.1 mono sub amp. Not the slash series, but still pretty good and is perfect for the sub. The sub is about a year old and is not blown. As far as I know should have plenty of life. Still hooked up so you're more than welcome to hear it.
I can sell this as just the trunk/sub box, with just the sub or the amp too. I've got about $300 in the whole thing, and would like to get close to $200 for it. If you just want the box then $75 or with the sub $125. Also interested in trades for TJ stuff, and would probably prefer that. I'm good on off-road lighting, bumpers and tops. Other stuff I'm all ears, especially if you have black interior pieces and carpeting you don't need or want.
