I've had my M3 about 3 years now.. now it's time to upgrade the audio significantly. It has the HK sound system factory upgrade.. 12 speakers and from what my research has told me, largely sh1tty amps, decent speakers, and decent headunit.
I MUST keep the OEM headunit.
I've installed a Dice MediaBridge 1500 about 2 years ago and an OEM aux input over the weekend.
I'll be tracking the car, so I want to keep the weight down and retain most of the trunk....
Got my hands on some rare JL stealthboxes.. they showed their age. Previous owner had them painted black. Scuff marks...
The cutout seen is for the 2003.5+ models that have an extra bulge on the driver's side.
Turned out great.
I have a JL 300/4 I plan on running bridged to the subs, then eventually use that for speakers up front and purchase a 500/1 to run subs.
I also have a LOC, LC6i.
For now: I have 2 JL 8w3v3 .. I don't think they are best suited for my low powered (300/4), IB set up.