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Installation Warnings and Tips:
•Always wear protective eyewear when using tools.
•Disconnect the negative (–) lead from your vehicle’s
battery.
•At the installation sites, locate and make a note of
all fuel lines, hydraulic brake lines, vacuum lines
and electrical wiring. Use extreme caution when
cutting or drilling in and around these areas.
•If the amplifier’s fuse must be replaced, use only
the same type and rating as that of the original.
•Choose a mounting location in the trunk or cargo
area where the amplifier will not be damaged by
shifting cargo.
•Make sure there is sufficient air circulation at the
mounting location for the amplifier to cool itself.
•Make sure that the amplifier is mounted securely
using nuts and bolts or the supplied mounting
screws.
•Mount the amplifier so that it remains dry – never
mount an amplifier outside the vehicle.
What’s in the Box?
(4) #8 x 2-1/2" Philips panhead screws for mounting
the amplifier
(2) 20A ATC-type fuses
(1) Owner’s Manual
Specifications
•55W RMS x 4 channels @ 4 ohms and ≤1% THD + N*
•70W RMS x 4 channels @ 2 ohms and ≤1% THD + N*
•THD+N: 0.02% (rated power @ 4 ohms)
•Signal-to-noise ratio: 90dBA
(reference 1W into 4 ohms)*
•Signal-to-noise ratio: 105dBA
(reference rated power into 4 ohms)
•Frequency response: 10Hz – 100kHz (–3dB)
•Max Power: 280 Watts
*CEA-2006A compliant
0Speaker Output Connectors
•Connect the speakers to these terminals observ-
ing proper polarity.
•Four-channel operation: Connect the front left
speaker to the Front L+ and L– terminals, and
the front right speaker to the Front R+ and R–
terminals. Repeat for rear speakers using the
Rear R+ and R– terminals.
•Three-channel operation: Connect the stereo
speakers to the Front terminals as above.
Connect the single speaker into which the
amplifier’s rear channels will be bridged to the
Rear R+ and Rear L– terminals.
•Two-channel (bridged) operation: Connect one
speaker to the Front R+ and Front L– termi-
nals. Connect the other speaker to the Rear
R+ and Rear L– terminals.
•Minimum speaker impedance for stereo opera-
tion is 2 ohms. Minimum speaker impedance for
bridged operation is 4 ohms.
1Fuses
•Replace only with same type and rating.
2Power Input Connectors
•+12V: Connect to the positive terminal of the
vehicle’s battery. 8 AWG wire is recommended.
Install an appropriate fuse holder and fuse (40A
minimum) within 18 inches of the battery. Make
sure the wire is not damaged or pinched during
installation. Install protective grommets when
routing wires through the firewall or other sheet
metal.
•GND: Connect to the vehicle’schassis. Clear
away the paint from the chassis location where
you will connect the ground wire. Use a ring
terminal, tapping screw and star washer.
•REM: Connect to the “Remote Out” lead from
source unit or to a source of switched 12V+
(ACC).
3Aux Output Connectors (RCA)
•Summed, nonfiltered pass-through output.
Front right and rear right inputs are combined
and sent to the right AUX output. Front left
and rear left inputs are combined and sent
to the left AUX output. Connect to the input
of an additional subwoofer amplifier.
4Front Input Connectors (RCA)
•Connect to front RCA outputs from the source
unit or signal processor.
5Front Input-Level Control
•Used to match the front input level of the
amplifier to the output level of the source unit.
•See Ffor adjustment procedure.
6Front Crossover-Frequency Control
•12dB/Octave crossover, variable from
32Hz to 320Hz.
•See Gfor adjustment procedure.
7Front Crossover-Filter Selector
•LPF – Select for subwoofer(s).
•Flat – Select for full-range speakers when
no subwoofer will be used in the system.
•HPF – Select for midrange speakers or
full-range speakers when a subwoofer is
used in the system.
8Rear Bass-Boost Control
•Set the Bass-Boost control according to your
preference, being careful not to apply
enough boost to damage your speaker(s).
9Rear Crossover-Filter Selector
•LPF – Select for subwoofer(s).
•Flat – Select for full-range speakers when
no subwoofer will be used in the system.
•HPF – Select for midrange speakers or
full-range speakers when a subwoofer is
used in the system.
ARear Crossover-Frequency Control
•12dB/Octave crossover, variable from
32Hz to 320Hz
•See adjustment procedure in G.
BRear Input-Level Control
•Used to match the rear input level of the
amplifier to the output level of the source unit.
•See 16 for adjustment procedure.
CPower On LED
•Illuminated when the amplifier is on.
DProtect LED
•Illuminated under any of the following fault
conditions: Battery over/under voltage, short
circuit in speaker wires, amplifier is too hot,
amplifier’s output circuit has failed (DC voltage
present in the amplifier’s output).
ERear Input Connectors (RCA)
•Connect to rear RCA outputs from the source
unit or signal processor.
FSetting Input Level
ATurn all Input-Level controls counterclockwise
to 6V (minimum).
BWith a dynamic music track playing, turn head
unit’s volume control to the 3/4 position.
CTurn Front Input-Level control clockwise until
the music is so loud that it no longer sounds
clear (distortion is present in the output).
DTurn Front-Input-Level control counterclock-
wise gradually,just until the music sounds
clear, once again.
EFront-level input is now adjusted correctly.
FAdjust Rear Input-Level control so that the
level of the rear speakers is proportionate to
the level of the front speakers according to
your preference.
GSetting the Crossover
ACrossover setting for 5" or larger full-range
speakers when no subwoofer is included in
the system.
BCrossover setting for midrange and/or
full-range speakers when a subwoofer
is included in the system.
CCrossover setting for subwoofers.
Note: Acceptable frequency ranges indicated
in gray.
CAR AUDIO POWER AMPLIFIER OWNER’S MANUAL
