I just saw your note from 8/9/2009 entitled Installing Car Audio Stereo System Subwoofer In 01-06 Montero and had a couple of questions, if I may...
I have a 2006 Monty with Infinity. The subwoofer is blown. I want to install an Alpine CDA-9886 and try to use the stock CD changer. I want to replace the sub with a larger, maybe 8" if possible. If I can use the amp, I would like to, but need to figure out how to incorporate that with my speakers, MBQuart PVI126, 6.5" component coaxial systems, for all doors. I'm a little concerned about where to put the rather sizable crossovers (about 6.5" x 4.5" x 1.5" boxes). Will they fit in the doors or would they be better placed with the amp? I confess to some limited knowledge on this, obviously, but have installed a few simpler systems into trucks and cars in the past.
Thanks for any advice you may have. John