I have a 2004 325xi with Harmon Kardon sound system with the "Business cd" player--what is that anyway? I like bass, and this sound system does not (IMO) deliver. The bass is definitely muddy and indistinct. The warning label on the car windshield has me a bit concerned though--do not under any circumstances do anything with any kind of electronic equipment in this car or you'll be sorry.
Does anyone have any recommendations for improving the bass quality?
Does anyone have any recommendations for improving the bass quality?