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Installation Warnings and Tips
• 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.

• Choose a safe mounting location away from moisture. 
• Make sure there is sufficient air circulation at the

mounting location for the amplifier to cool itself.

• Mount the amplifier, using the supplied hardware.

Specifications
• 60W RMS x 4 channels @ 4 ohms and 

≤1% THD + N*

• 80W RMS x 4 channels @ 2 ohms, 14.4V supply and

≤1% THD + N*

• 160W RMS x 2 channels @ 4 ohms, 14.4V supply and

≤1% THD + N*

• THD + N: 0.05% (rated power @ 4 ohms)*
• Signal-to-noise ratio: 85dBA 

(reference 1W into 4 ohms)*

• Signal-to-noise ratio: 102dBA 

(reference rated power into 4 ohms)

• Frequency response: 10Hz – 100kHz (–3dB)*
• Total peak power: 640 watts
* CEA-2006A-compliant

0 Speaker Output Connectors

• Connect the speakers to these terminals,

observing 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 L+ and L– terminals, and 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.  

1 Fuses

• Replace only with the same type and rating.

2 Power 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’s chassis. Refer to

the picture below. 

• REM: Connect to the “Remote Out” lead from

the source unit or to a source of switched 
12V+ (ACC).

3 Aux 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. 

4 Front Input Connectors (RCA)

• Connect to the front RCA outputs from the

source unit or signal processor.

5 Front Input-Level Control

• Used to match the front input level of the 

amplifier to the output level of the source unit.

• See F for the adjustment procedure.

6 Front Crossover-Frequency Control

• 12dB/octave crossover, variable from 

32Hz to 320Hz.

• See G for the adjustment procedure.

7 Front Crossover-Filter Selector

• LP: Select for subwoofer(s).
• FLAT: Select for full-range speakers when 

no subwoofer will be used in the system.

• HP: Select for midrange speakers or 

full-range speakers when a subwoofer is 
used in the system.

8 Power On LED

• Illuminated when the amplifier is on.

9 Protect 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).

A Rear Bass-Boost Control

• Provides up to 6dB of boost at 50Hz. Set 

the Bass-Boost control according to your 
preference, being careful not to apply enough
boost to damage the speaker(s).

B Rear Crossover-Frequency Control

• 12dB/octave crossover, variable from 

32Hz to 320Hz. 

• See adjustment procedure in G.

C Rear Crossover-Filter Selector

• LP: Select for subwoofer(s).
• FLAT: Select for full-range speakers when 

no subwoofer will be used in the system.

• HP: Select for midrange speakers or 

full-range speakers when a subwoofer is 
used in the system.

D Rear Input-Level Control

• Used to match the rear input level of the 

amplifier to the output level of the source unit.

• See F for the adjustment procedure.

E Rear Input Connectors (RCA)

• Connect to rear RCA outputs from the source 

unit or signal processor.

F Setting Input Level

A Turn all Input-Level controls counterclockwise

to 6V (minimum).

B With a dynamic music track playing, turn head

unit’s volume control to the 3/4 position.

C Turn Front Input-Level control clockwise until

the music is so loud that it no longer sounds
clear (distortion is present in the output).

D Turn Front-Input-Level control counterclock-

wise gradually, just until the music sounds
clear, once again.

E Front-level input is now adjusted correctly.
F Adjust 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.

G Setting the Crossover

A Crossover setting for 5" or larger full-range

speakers when no subwoofer is included in 
the system.

B Crossover setting for midrange and/or 

full-range speakers when a subwoofer 
is included in the system.

C Crossover setting for subwoofers.
Note: Acceptable frequency ranges indicated 
in gray.

This product is designed for mobile applications and is not 
intended for connection to the mains.
A valid serial number is required for warranty coverage.
Features, specifications and appearance are subject to change
without notice.

4

 
 
1. Status LED on Amplifier not Lit - Head Unit (Source) Turned ON  
Verify: 

A. Remote turn-on wire from source to amplifier has proper voltage 
B. Power (B+) connections at amplifier, terminal blocks, and battery are secure 
C. Ground (GND) connections at amplifier and vehicle chassis are secure 
D. Battery B+ fuse (if used) is OK 
E. Amplifier fuse is OK 
F. B+ at battery and B+ at amplifier has proper voltage 

 
 
2. Status LED’s Lit, No Output from Speakers in Normal Operating Condition  
Verify: 

A. RCA cables from amplifier to source are securely connected 
B. Volume adjustment on amplifier is correctly adjusted 
C.  Source is ON and playing 

 
 
3. Engine Noise From Speaker(s) 
Turn source OFF, Disconnect RCA cables at amplifier. If noise stops, check equipment & cables leading 
to amplifier. 
Verify: 

A. RCA cables are of good quality with no breakage to internal shields 
B. RCA cables from source to amplifier are not run alongside any power cables 

 
 
4. Amplifier Output Distorted Music 
Verify: 

A. Source output music to amplifier is not distorted 
B. Source output sensitivity is correctly adjusted 

 
 
5. Amplifier Shuts Down, Green LED’s are Lit  - Amplifier is in Thermal Protection Mode 
Verify: 

A. Amplifier is mounted with adequate air circulation around heatsinks or vents 
B. Amplifier is not mounted under carpet or sealed enclosure 
C. Speakers meet correct impedance for application (mono or stereo hookup) 

 
 
6. Amplifier Does Not Turn ON, and Red LED is Lit Amplifier (and not Connected to a Shorted Speaker) 
Verify: 

A. Speaker crossover (if used) is not defective 

 

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