Ah ha. Now I know why the bass sounds so good in the front. I will look again but I don't think I have the separate tweeters in the back seats. My 2004 330ci has those tho....
Originally Posted by ChrisUNC79
You also have two subs--one under each front seat. That brings your total to at least 9.
I think the other two speakers you missed are in the back seat. In the coupe, there are two speakers on each side in the rear (one tweeter + one mid range).
2011 328i Convertible
: Mineral White; Oyster/Black Dakota Leather; Premium, Sport, Value; Sport Wheel w/paddles; Heated Front Seats; Satellite radio; HK Sound
2012 528i Sedan
: Titanium Silver; Oyster/Black Dakota Leather; Anthracite Wood; Comfort Access; Side & Top View Cameras; Cold Weather, Premium; Technology;
: Titanium Silver; Gray Leather; Premium, Sport; Fold Down Rear Seats; Xenon Headlights; Navigation System; HK Sound
2001 X5, 2009 528i