I just purchased a new 330Ci and understand the car's Harman Kardon audio
system has 12 upgraded speakers and upgraded amplification. I'd like to
know 1) where the speakers are located (I can only see 3 grills on each
side, plus the one behind the rear seat) and 2) obtain general specifications about the audio system.
I'd appreciate an indication of where I could find more details
about this audio system (specs, location of aux input, etc.). Is there such
a document (from either BMW or Harman Kardon) and, if so, how can I access