i have 2 systems.

my aveo has:
alpine cda-9815
alpine FRV-340 (65x4 rms)
kicker comp 5.25 inch components ( 65x2)
rear stock speaker by deck power 2 of the channel of amp not used. wired to the rear pod, but not hooked.
rockford 501bd, 650watts, 2 ohm
1 12" rockford hx2 dual 4 ohm in a huge ported box.

rockford amp and alpine amp and the sub was stored for couple years.


car 2 :
alpine cda9815 i have 2 of these decks
concept 504 somthing, 50x4 rms,
JL audio coax 6.5 front,
rockford tweets, by deck power, (deck has built in adjustable crossover)
no rear speaker,
bridged 2 rear channels for 1 12" infinity in standard ported box.