Surprised there isn't a forum about this, so I added it. How do you like the sound system upgrade in the limited model. I like mine but wonder where the amp is? Also, why is most of the sound from the front speakers? Is there an easy way to add a subwoofer? I have mine set at 2 up from center on both bass and mid bass and 3 DOWN on treble (from center), with the fader 2 toward the back. I also leave my auto volume turned on. This gives me pretty good sound, but I'm used to having more control and getting better sound. How do you have yours set and do you like the system? (I listen to CD mostly, and ipod right after that. XM sounds just okay...and FM is pretty bad).