I recently traveled back to my folk's house for a visit while I studied for the boards. While there, it occurred to me that I still had all of the equipment from my old stereo system except for a speaker enclosure. I decided to pick up a sheet of MDF, some cheap carpet, and a couple of drawer handles and build an enclosure. The rest was all sitting around gathering dust so I replaced the stock head unit, ran the cables, and built an enclosure for the subs. I wanted to build it with the absolute minimum of modifications or screw-holes on the car itself because it's not exactly my car, until I start getting paid that is. So, no screw holes were needed on the car itself, and all audio hardware is built into the box. The speaker wires, power lines, and signal cables are all run inside the box through holes barely big enough for the wires to pass through and the distribution blocks are mounted inside as well. Then I used a silicone based sealant to seal all of the seams and around the in-running cables from the inside. A second reason that I wanted everything mounted to the speaker enclosure is that if the car does get broken into, everything can be removed with minimal damage to the car itself whereas my old car would need to be trashed to get everything out. The enclosure dimensions were calculated by Rockford Fosgate's online tool as well as the wiring of the subwoofers. It's running 400 watts RMS in a 2 ohm loop which produces pounding bass and fantastic lows. The system would sound better if I had made the enclosure larger (it has just above the minimum recommended airspace for such a system) but I didn't want to give up my whole hatch. Here are some pics...
Here is the Kenwood Deck I mounted to replace the stock unit. It's by far the best head unit I've ever owned, with a mind boggling amount of options to use for tuning your sound. I actually bought this years ago because it was a reasonably priced unit which had aux RCA inputs for my Rockford Fosgate Omnifi MP3 20GB storage system (which I did not install this time). And of course, my TomTom
Found a handy place to mount the controller for the Audiocontrol Epicenter (audio processor)
Here is the enclosure from the interior of the car, the seats are folded down to reveal the components but normally they cannot be seen. On the left, the Epicenter, middle is a 1 Farad capacitor, and on the right is the Amplifier.
And a view from the hatch...