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Memphis Audio recommends the installation of our products to be performed by an Authorized dealer. Attempting an
installation project on your own or through an unauthorized source may result in damage to your products and may
potentially void your warranty.
Amplifiers should be mounted in areas that receive adequate ventilation. These amplifiers are water and element
resistant but should be mounted in areas that do not receive excessive direct contact with water. These amplifiers
are not intended to be submerged and care should be used when determining a mounting location.
For your safety, always inspect the mounting location carefully to ensure you are not drilling into any electrical,
hydraulic, fuel or fluid lines. Always check your speaker load with a multi-meter before connecting the amplifier.
Connecting any speaker load lower than the rated impedance of the amplifier will result in damage to the amplifier.
Damage of this nature is NOT covered under warranty. Please pay close attention to what connections are made to
the amplifier.
If you are uncertain or uncomfortable proceeding with your installation, please contact your local
authorized Memphis Audio Dealer
When troubleshooting your amp, speaker and speaker wires should be tested first.
No Output:
•Confirm all wiring is firmly connected. Both +12V and REM terminals must have +12 Volts present and GND must be
connected to chassis' ground or to the negative battery terminal.
•Confirm the signal source is connected and supplying an output signal. To confirm the amp is working, connect an
RCA patch cord to the line inputs of the amplifier (do not connect the other end of the patch cord). Briefly tap the
center pin of each disconnected RCA with your finger. This should produce a noise (brief static or hum) in the
speakers.
The Amp Is Hot: check the speaker impedance or load. The total minimum impedance of all speakers should
not be lower than the rating of the amp.
Only One Channel Works:
• Confirm the speaker terminal strip connections are firmly connected.
• Check "balance" control on your signal source.
• If using RCA Low-Level inputs, reverse the input plugs at the amplifier. If the channel that is silent reverses
position, the problem is in the source unit or connecting cable.
Weak Output
• Check input sensitivity control adjustment.
Unwanted Noise
• Whine that increases and decreases with engine speed - confirm the Amp & Source unit are grounded properly.
• Clicking or popping noise at a rate that follows engine speed - this is often induced by the vehicles ignition system.
Confirm that the vehicle is equipped with resistor spark plugs and wires. The ignition system may need service.
• Noise can be caused by routing speaker input wires too close to the light wires and other accessory wires in the
vehicle. Re-route wires to avoid unwanted interference.
• If above steps do not improve/reduce noise, the system should be checked by a professional audio installer at a
Memphis Authorized Dealer.
Red LED is Illuminated
• Speaker or wire is shorted
• Battery voltage too high
• Amplifier has overheated due to improper ventilation
• Battery voltage too low
Installation Information
Warning
Troubleshooting
3
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