Trouble Shooting

1.No power: Verify that the Ground, +BATT and remote are securely attached to the amp,the connection at the + terminal of the battery is secure, the remote turn-on is securely fastened to the source unit and that the in-line fuse at the battery is good as well as the fuse on the amp. If fuses are blown, replace them and attempt to power the amp back on. If fuses continue to blow, please see an authorized dealer. To conﬁrm that the amp is getting power at the +BATT and remote, use a digital multi-meter set to DC voltage, attach the negative terminal of the meter to the ground and the positive to the +BATT and then check the remote. The remote and the +BATT should have 11-15volts. If the amp has ground, +BATT and remote voltage and will not power on, please visit an authorized dealer or call the technical support number listed below for further assistance.

2.Power light on, no output: Turn the audio system off (source unit and ampliﬁer), check output signal connections from the source unit and input signal connections at the amp. Remove speaker wires and test for opens or shorts of speakers with a digital multi-meter set to the impedance setting. Reconnect the speaker wires and test the system. If there is still no output, visit an authorized dealer or call the technical support number listed below for further assistance.

3.Amp turns on and shuts off: Turn the audio system off (source unit and ampliﬁer). Remove the speaker wires and test for opens or shorts of speakers with a digital multi-meter set to the impedance setting. Gently push on the speaker with your ear close to it. If it sounds scratchy then replace the speaker or consult a local dealer. Carefully touch the amp for temperature. If it is extremely hot then the amp is in thermal protection and needs to cool down. If thermal protection continues to be a problem, see an

authorized dealer or call the technical support number below.

4.No sound from one side: Check the speaker connections, input connections, balance control on the source unit, and then check the speakers for shorts with the digital multi-meter.

5.Low sound from both radio and CD: Check the radio’s fader control and the ampliﬁer’s input sensitivity.

6.Ampliﬁer shuts down after long play times: If the light is turned off, then the amp is probably in thermal protection due to poor ventilation (see ampliﬁer installation instructions for causes of high operating temperature). If the amp has good ventilation then check the speaker impedance to verify that it is above the suggested load rating. With it running,verify that you have more than 11volts at the +BATT portion of the amp and that you have 4 gauge power cable and the proper fuse rating at the fuse holder near the vehicle battery.

MXA4002 specifications

The MTX Audio MXA4002 is a powerful dual-channel amplifier designed specifically for marine and powersports environments. It combines robust performance with durability, making it an essential component for audiophiles who seek high-fidelity sound in challenging conditions.

One of the standout features of the MXA4002 is its waterproof design. The amplifier is built to withstand the rigors of marine and outdoor environments, making it resistant to moisture, salt, and debris. This feature not only enhances longevity, but it also ensures consistent performance regardless of the elements.

With a power output of 400 watts, the MXA4002 delivers substantial power to drive speakers and subwoofers effectively. It operates at a stable 2-ohm impedance, allowing it to produce exceptional sound quality even under heavy loads. This power output translates into clear, dynamic sound across various types of music, from booming bass notes to crisp highs.

The MXA4002 incorporates advanced Class D technology, which offers efficient performance while generating minimal heat. Class D amplifiers are known for their compact size and lightweight design while maintaining high output levels, making the MXA4002 a practical choice for installations where space is limited.

Moreover, this amplifier features variable crossover settings, allowing users to fine-tune the frequency output to match their specific speaker configurations. Whether using it with full-range speakers or subwoofers, the MXA4002 can be adjusted to ensure optimal sound tailored to individual preferences.

Another significant characteristic is its built-in thermal and overload protection. This safeguard prevents the amplifier from overheating or drawing too much current, ensuring it operates safely and efficiently even in demanding situations.

The sleek and rugged design of the MXA4002 also includes a corrosion-resistant finish, which complements its marine application. Its compact dimensions allow for flexible installation options, making it suitable for boats, ATVs, or any powersport vehicle.

In summary, the MTX Audio MXA4002 is an exceptional marine amplifier that combines robust power, advanced technology, and reliable durability. With features like waterproof construction, Class D efficiency, and customizable sound options, it stands out as an ideal choice for those looking to enhance their audio experience in outdoor and challenging conditions.