JL Audio A2150 User Manual
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SERVICING YOUR JL AUDIO AMPLIFIER
If your amplifier fails or malfunctions, please
return it to your authorized JL Audio dealer so 
that it may be sent in to JL Audio for service. 
There are no user serviceable parts or fuses inside 
the amplifier. The unique nature of the circuitry 
in the JL Audio amplifiers requires specifically 
trained service personnel. Do not attempt 
to service the amplifier yourself or through 
unauthorized repair facilities. This will not only 
void the warranty, but may result in the creation 
of more problems within the amplifier. 
If you have any questions about the installation or
setup of the amplifier not covered in this manual,
please contact your dealer or technical support.
JL Audio Technical Support:
(954) 443-1100
9:00 AM – 5:30 PM (Eastern Time Zone)
Monday - Friday
JL AUDIO A2150
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Low-Voltage protection:
If the car’s supply voltage drops below 10
volts, the entire amplifier will shut itself off to 
protect its internal circuitry. The green “Power” 
indicator will turn off when this occurs. The 
amplifier will turn back on when voltage climbs 
back above 10 volts. This may happen in a rapid 
cycle when bass-heavy program material causes 
a weak charging system to dip below 10 volts 
momentarily. If this is happening in your system, 
turn your audio system off and have your power 
wiring, ground connections and charging 
system inspected. 
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JL AUDIO A2150
