In Phase IPA 2001D Manuel D'instructions page 7

Bridged Mono Wiring
FROM
RADIO
L
R
LINE OUT LINE IN
SPEAKER
SPEAKER
L
R
LINE OUT LINE IN
FROM REMOTE
GAIN CONTROL
L
MIN MAX 15Hz 50Hz 0dB 12dB 50Hz 250Hz 0 180
LEVEL SUBSONIC BASS L.P.F PHASE
BOOST
R
< MASTER >
FUSE B+
POWER
2 OHM
FUSE B+
POWER
< SLAVE >
L
MIN MAX 15Hz 50Hz 0dB 12dB 50Hz 250Hz 0 180
LEVEL SUBSONIC BASS L.P.F PHASE
BOOST
R
5
IN
MASTER SLAVE
REMOTE
OUT
MASTER/SLAVE
REM GND
ON
PROT
REM GND
ON
PROT
IN
MASTER SLAVE
REMOTE
OUT
MASTER/SLAVE