EN
CH 1-4 LOW IN
REMOTE
TURN-ON
MODE
REM DC
LOW
HI
AUDIO
INPUT
LEVEL
PC
R
R
+
R
R
-
R
L
+
R
L
-
F
R
-
F
L
-
R
L
-
R
R
-
F
L
+
F
L
-
F
R
+
F
R
-
F
R
+
F
L
+
R
L
+
R
R
+
G
N
D
B
A
T
O
U
T
I
N
OUTPUT INPUT
OUTPUT INPUT
PWR
PRT
PWR
REM
CH 5-6 PRE-OUT
Chassis ground (-)
Remote turn-on (blue)
to stereo REM out
Battery
Fuse holder, 15A fuse
18" (46cm)
Signal input
• Line-level inputs:
If your source unit offers front and rear
preamp outputs, connect them to the front and rear line-level
inputs on the wire harness using RCA patch cables.
Note:
when using low-level signals and remote turn-on lead, set
the “Turn-on Mode” switch to “REM” and the “Input Level” switch to
“LOW”.
TURN-ON
MODE
INPUT
LEVEL
REM DC AUDIO
LOW HI
1
2
3
4
• High-level inputs:
If your audio system’s source unit does
not have line-level outputs, connect the speaker output wires
of your source unit to the high-level input wires of the amplifier
harness.
TURN-ON
MODE
INPUT
LEVEL
Vehicle speaker wires
REM DC AUDIO
LOW HI
Wire color
High-level input
Orange
Front left +
Orange/Black
Front left -
Blue
Front right +
Blue/Black
Front right -
Red
Rear left +
Red/Black
Rear left -
Yellow
Rear right +
Yellow/Black
Rear right -
NOTE:
When using high-level signals, set the “Turn-on Mode” switch
to “DC” (to turn on when it receives battery power) or “AUDIO” (to turn
on when it senses signal from your source unit), and the “Input Level”
switch to “HI”.
Speaker Output Connections
Connect your speakers to the wires of the speaker output wiring
harness, observing proper polarity: connect each positive (+) lead
to the appropriate positive (+) speaker terminal, and negative (-)
lead to the appropriate negative (-) speaker terminal. Then plug the
speaker output wiring harness into the DSP Amplifier.
IMPORTANT:
None of the speaker output channels can be bridged.
To speakers
Wire color
Output channel
White
Front left +
White/Black
Front left –
Gray
Front right +
Gray/Black
Front right –
Green
Rear left +
Green/Black
Rear left –
Purple
Rear right +
Purple/Black
Rear right –
Connecting a second amplifier (sold separately)
To incorporate more power into your system, you can send
a second amplifier a full-range audio signal using the preamp
outputs of the INFDSP4425. Use an RCA patch cable to connect
the preamp outputs to the preamp inputs of the second amplifier.
To speakers amplifier
Connecting the remote bass level control (sold
separately)
The INFDSP4425 is compatible with the optional Infinity RBC
remote bass level controller, available at your local Infinity dealer.
To connect it, plug into the appropriate input on the control panel
of the INFDSP4425. Mount the remote in a convenient location,
such as under the dash, using sheet metal screws.
CH 1-4 LOW IN
REMOTE
TURN-ON
MODE
REM DC
LOW
HI
AUDIO
INPUT
LEVEL
PC
R
R
+
R
R
-
R
L
+
R
L
-
F
R
-
F
L
-
R
L
-
R
R
-
F
L
+
F
L
-
F
R
+
F
R
-
F
R
+
F
L
+
R
L
+
R
R
+
G
N
D
B
A
T
O
U
T
I
N
OUTPUT INPUT
OUTPUT INPUT
PWR
PRT
PWR
REM
CH 5-6 PRE-OUT
CA_Infinity_DSP Amplifier INFDSP4425_QSG_SOP_V5.indd 3
CA_Infinity_DSP Amplifier INFDSP4425_QSG_SOP_V5.indd 3
9/29/2020 1:47:46 PM
9/29/2020 1:47:46 PM
