In my 2005 w/third row seat and BOSE, it is behind a panel just inside the rear hatch, passenger side. Panel pulls off.
Ever been in a car with better standard sound system? What don`t you like about it? Im just curious, because i really like the sound.Bass sound is non-directional so as long as some thought has been put into sub placement by the manufacturer you should not be able to tell exctly where the sound is coming from, unlike tweeters (mids and highs) which are directional and are more dependant on accurate placements. I will be undertaking a speaker swap project. I will try to post my findings. I have the bose with 6 cd and 8 speakers in my 2008. Sounds is good, not great. But i am a former musician and very particulat about sounds dynamics and control.