just installed the following into a 1996 ford econoline e350:
sony xplod cdx-gt55uiw head unit
Kenwood KAC-9105D 1800-Watt Class D Mono Amplifier
2- 12" rockford fosgate punch he2 (500 watt max) in a non ported truck box (space in the van is limited)
...wired the amp with a fierce audio 4 gauge wiring kit also.
Phase - 0 degrees
ISF - 25hz
bass boost - 0
LPF - 80hz
input sensitivity(v) - about 0.8
subs just aren't hitting for sh*t! they can barely be heard, but they are pushing. surely i'm making some mistakes. any help would be greatly appreciated!