I believe that with Bose systems, you have to stick with Bose only. That is what I've been lead to believe. If you can find other Bose speakers that are larger, then you can possibly upgrade. I haven't heard the Bose system in the Q45 yet, but my Legend had a Bose system and I still have all of my stock Bose peakers, amps and head unit. I was thinking that if I don't like the small 4" speakers in the front of the Q45, I would consider using the 6 1/2" that were in the Legend front doors. The rear speakers in both cars are 6 x 9 and I believe the head unit in the Q45 is made by Clarion which is superior to the Legend which is made by Alpine. Once my car gets here and I hear the sound I will be able to know what the better system is. Anyway, here are some links that may be of assistance to you and some others:
http://www.carstereohelp.com/s....htm
http://www.carstereohelp.com/s....htm
http://www.carstereohelp.com/s....htm
http://www.carstereohelp.com/s...e.htm
Modified by lino at 9:49 PM 8/19/2005
Modified by lino at 1:23 AM 8/20/2005