My M3 came with a Harmon Kardon system. It lacks the usual bass even though they supply it with what they call a subwoofer. It isn't a subwoofer by any stretch of the imagination. It is installed in a door that when opened and a section of the rear seat is removed becomes a "ski pass". I don't ski.
I removed the sub, hell, I removed the entire door panel and had a custom box made. Bavarian Soundwerks made an enclosure like this but discontinued it a few years back. So I had one made out of 3/4" MDF and it is sealed for the Audiobahn sub.
In this photo you can almost see the Alpine monoblock MRD 500 sub amp mounted on the side. This will be out of sight soon because I am getting the carpeted panel that will conceal it entirely.
Since I removed all the HK speakers I needed a 4 channel amp. I carved out of the foam (that holds the Mobility Kit) a space for the amp. Since this pic was taken I cleaned up the wiring. I used a jigsaw to cut slots in the cover and a paddle drill bit to cut some holes for ventilation. I got a bit artsy with my non-standard pattern.
Next I went to install the iPod and GPS unit. I really despised the window mount. Nothing stealth about it. So I came up with the notion of installing the GPS ball mount in the sunglass compartment. The ball mount is removable...totally stealth. I also ran a power cord from the fuse box to the sunglass holder compartment.
iPod
The small knob by the cup holders is the sub amp gain control.
I removed the sub, hell, I removed the entire door panel and had a custom box made. Bavarian Soundwerks made an enclosure like this but discontinued it a few years back. So I had one made out of 3/4" MDF and it is sealed for the Audiobahn sub.
In this photo you can almost see the Alpine monoblock MRD 500 sub amp mounted on the side. This will be out of sight soon because I am getting the carpeted panel that will conceal it entirely.
Since I removed all the HK speakers I needed a 4 channel amp. I carved out of the foam (that holds the Mobility Kit) a space for the amp. Since this pic was taken I cleaned up the wiring. I used a jigsaw to cut slots in the cover and a paddle drill bit to cut some holes for ventilation. I got a bit artsy with my non-standard pattern.
Next I went to install the iPod and GPS unit. I really despised the window mount. Nothing stealth about it. So I came up with the notion of installing the GPS ball mount in the sunglass compartment. The ball mount is removable...totally stealth. I also ran a power cord from the fuse box to the sunglass holder compartment.
iPod
The small knob by the cup holders is the sub amp gain control.
