Ok, here's my setup...
-kenwood dualmag 5 1/4's in the doors
-Stock tweets up on the dash (yes, they're a bitch to replace and they work fine - so why screw w/ it)
-Pioneer 4way 6x9's in the back - but the moulding didn't fit nicely, so i took 'em out and left the stocks in there.
- 2xAlpine Type-S 12's (Dual voicecoils) in a custom fiberglass false-floor-like encloser.
The subs put out enuff bass to compensate for the paper-shit-tickets in the rear pods. I turn all the bass off on the deck, boost the EQ for the subs and still push 155db (spl). The quality of the mids and highs comming out of the door and rear pods is mediocre to ok. But when you're hair is virbating and your eyes are watering from the spl, you don't really care about how clear your highs are
. The best question to ask yourself is this ... do you want perfect sound quality, or do you want window-shakin bass. You can have both, but it's usually a waste of money.
3rd car, 3rd system ... 6 competitions, 4 trophies. 161db with a spidered windshield is my watermark.
My two cents
-Andrew