Troubleshooting Guide for Kicker KX350.2 Stereo Amplifier

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Troubleshooting

If your amplifier does not appear to be working, check obvious things first such as blown fuses, poor or incorrect wiring connections, incorrect setting of crossover switch and gain controls, etc.

There are two LEDs on the end panel of your Kicker KX series amplifier, one green and one red. When the green LED is lit this indicates the amplifier is turned on and no trouble exists. If the green LED turns off and the red LED is lit this indicates that the protection circuitry (SORT) is engaged.

The power indicator on top of the amplifier which illuminates the model badge follows the same function as the green LED.

Green LED off, no output:

With a Volt Ohm Meter (VOM) check:

+12 volt power terminal (should read +12V to +16V). Remote turn-on terminal (should read +12V to +16V). Ground terminal.

Green LED on, no output:

Check RCA connections.

Test speaker outputs with known good speaker. Substitute known good source unit.

Check for signal on RCA cable with VOM meter in AC position.

Red LED on, no output:

1.) Amp is very hot.

Thermal protection is engaged. Check for proper impedance at speaker terminals. Also check for adequate airflow around amplifier.

2.) Amp shuts down only while vehicle is running. Voltage protection is engaged. Voltage to the amplifier

is not within the 9-16 volt operating range. Have automobile charging/electrical system inspected.

3.) Amp will only play at low volume levels.

Short circuit protection is engaged. Check for speaker wires shorted to each other or the vehicle chassis. Damaged speakers or operating below minimum impedance will also cause this.

No output from one channel:

Check balance control on head unit.

Check RCA & speaker connections for that channel. If problem changes sides then you have a bad RCA cable or source unit problem.

Swap speaker connections from left to right.

If problem changes sides then you have a bad speaker cable or bad speaker.

Alternator noise (whining sound that varies with engine RPM):

Check for damaged RCA cable. Check routing of RCA cable. Check source unit for good ground.

Check gain setting, turn down if set too high. Swap RCA connections from left to right.

10	KX AMPLIFIERS

KX350.2 specifications

The Kicker KX350.2 is a high-performance compact amplifier renowned for its reliable power output and advanced features. Designed for those looking to elevate their car audio experience, this two-channel amplifier boasts a maximum power output of up to 350 watts, making it an excellent choice for driving various speaker configurations.

One of the standout features of the KX350.2 is its Class D technology, which ensures that the amplifier remains efficient and cool even during prolonged use. This efficiency reduces power consumption while maximizing audio output, effectively delivering clear and powerful sound without draining the car's electrical system. The compact design also allows for easy installation in tight spaces, providing flexibility in mounting options.

The amplifier includes a variable low-pass crossover, adjustable from 50 Hz to 200 Hz, allowing users to tailor the audio output according to their preferences and the specifications of their speakers. The KX350.2 is also equipped with a selectable bass boost feature, providing an additional 6 dB of enhancement at 40 Hz to ensure that bass-heavy tracks sound rich and impactful.

For added convenience, the KX350.2 features speaker-level inputs, enabling a seamless connection to factory radio systems. This versatility ensures that car audio enthusiasts can upgrade their sound system without the need to replace the existing radio. Additionally, the amplifier comes with a 12-volt trigger input for easy on/off operation alongside the vehicle’s ignition, simplifying usage for everyday driving.

Durability is another key characteristic of the Kicker KX350.2. The amplifier is built with high-quality materials that resist wear and tear, making it suitable for various environments, including those exposed to moisture and temperature variations. The sleek design and robust construction give it a professional appearance that aligns with Kicker's reputation for quality.

With its combination of power, efficiency, and customizable features, the Kicker KX350.2 is an ideal amplifier for enthusiasts seeking to enhance their car’s audio system. Whether you are looking to drive high-performance speakers or want to bring out the best in your favorite tracks, the KX350.2 delivers impressive sound quality and reliability you can count on.