Lets start with where the system is headed. Eventually these will be in the vehicle (2007 Buick Lucerne):
Polk MM651 fronts
Polk MM691 rears
For the sub I currently have (pulled from my old car):
Kenwood KAC-529S 120wx1 amp
MTX Thunder 6000 12" sub
Off the shelf enclosure
This car I am doing a little different, I am more geared towards quality than quantity. One other concern is space, I need as small as possible. In my old car the MTX with Kenwood did fine although it could have been tighter.
What I am wondering is should I keep the 12", replace it with something like a nice Polk MM1240, ditch all that and go with a pair of 8" MM840s? What do you think? I am primarily concerned with tight, clean, low bass that will probably never be heard outside the vehicle.
Any thoughts appreciated!