The rear doors have separate tweeters in front of the woofers, for a total of 11 speakers. There is no sub, but the front door speakers are like mini subs (which sound surprisingly good for paper cone woofers). Mine sounds pretty crisp. I usually keep bass +3 or +4, mid -2, and treble +2. I think the best DSP setting is "driver" which widens the soundstage compared to the other positions, which sound flat to me.