Limited Warranty

7.Ampliﬁer shutting off and LED ﬂashing off and on: This is an indication of low or high voltage at the +BATT or the remote portion of the amp. Test the +BATT and the remote portion of the amp with a digital multi-meter. If the voltage at either of these terminals is above 15volts or below 11volts, consult an automotive electrical specialist. If voltage is consistently below 11volts, adding a one-farad stiffening capacitor will solve the problem.

8.Whining noise that increases with acceleration: This is what is known as a ground loop. To verify if the noise is being generated by a bad ground or the RCA cables, remove the RCA cables from the amp (make sure they are shielded from touching the chassis) and turn the system back on. If the noise persists, then the problem is ground related. If the noise stops, then it is being radiated into the amp via the RCA cables. If the noise is being radiated by the RCA cables, simply re-route the cables away from power cables–speciﬁcally the +BATT cable that is connected to the battery. If whining noise is ground related then conﬁrm that all ground cables are secure in the vehicle and free of corrosion. Please see power and ground portion of this manual for correct system grounding instructions.

MTX TECHNICAL SUPPORT 1.800.225.5689

MTX ampliﬁers purchased in the USA from an authorized MTX dealer are guaranteed against defects in material and workmanship for the period of 1 year from the date purchased by the end user if the product is installed by an authorized MTX dealer, and 90 days if installed by the consumer. Product found to be defective during that period will be repaired or replaced by MTX at no charge. This warranty is void if it is determined that unauthorized parties have at- tempted repairs or alterations of any nature. Warranty does not extend to cosmetics or ﬁnish. Before presuming a defect is present in the product, be certain that all related equipment and wiring is functioning properly. MTX disclaims any liability for other incurred damages resulting from product defects. Any expenses in the removal and reinstallation of products are not cov- ered by this warranty. MTX’s total liability will not exceed the purchase price of the product. If a defect is present, your authorized MTX dealer may be able to effect repairs.

•1 Year Warranty against defects in materials and workmanship (90 day Mitek Proof of Performance Pledge applies)

Proof of purchase is required when requesting service, so please retain your sales receipt, and take a moment to register your warranty on line

@ www.mtx.com.

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.