Im redoing my system and all im keeping is headunit, and current infinity perfect coax speaker.
My headunit is a 1400 dvd. 8 band eq,6 rca outs.
Front is going to be ppi65s
Rears infinity perfect 6.1
Now im gonna be passive at first but im buying a new amp anyway and need some requirements incase I wanna run active.. is there anything I need besides built in crossover? Amp might be ppi 900.4
Is my headunit ok if I get a digital processor from ppi?
What other requirements do I need?