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TA7402 Owner’s Manual
Introduction
Thank you for choosing MTX to help reach the ultimate goal with your vehicle. Adding MTX amplifiers and
matching MTX speakers and subwoofers with StreetWires connections will put you in a better position to
hear, feel, and experience all of the music the artist intended.
Specifications
Primary Ratings:
Power Output: 100 watts RMS x 2-channels at 4 ohm and ≤ 1% THD+N
Signal-to-Noise Ratio (1 watt): 75dB
Secondary Ratings:
Power Output: 200 watts RMS x 2-cha
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Note: Smart Engage™ is only active on the left input. 4. Input Sensitivity – The Input Sensitivity switch is used to set the proper input voltage range: X1 POSITION: 100mV–1V (Typically for RCA Input) X10 POSITION: 1V–10V (Typically for Speaker Level Input) 5. Stereo Gain Control – This feature is used to fine-tune the input sensitivity of the amplifier to the source unit’s output level. 6. Variable Hi, 12dB / Low, 24dB Mono @ 40Hz-350Hz X-over– This control allows the user to choose the exact
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Installation Mounting Place your Thunder amplifier at the predetermined mounting location. Use a felt pen to mark the exact position of the mounting holes on the mounting surface. Set the amplifier aside. Then with a sharp, precise blade cut small circles in the carpet and padding around the four marks denoting your mounting holes to expose the metal underneath. Use a center punch to make an indentation in the metal to ensure that you drill the exact position for the screws. Note: Please use
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The gauge of the power and ground wire is often an overlooked aspect of amplifier installation. The more power the amplifier receives, the more power it will produce. Power cables have a natural resistance, and will lose voltage by the time the power makes its way to the amplifier. The larger gauge (diameter) wire will hold more voltage over longer runs. Also, by having a larger diameter ground wire, the amplifier can run more efficiently. MTX recommends using a minimum of 4 gauge power and grou
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standard for low pass crossover point is right around 90Hz. However, by experimenting with the crossover point (higher or lower) you will find what sounds best in this install. This amp uses a 24 decibel per octave roll off, which is pretty steep, or tapers off fairly quickly from the crossover point. This design complements both the subwoofer and the mid to provide greater musical detail. • Setting for Components and Separates: First enable the electronic crossover by selecting the “ON” pos
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Trouble Shooting Read this if you want to be a do-it-yourselfer or give us a call at 800-CALLMTX. PROBLEM CAUSE SOLUTION No LED indication No +12V at remote connection Supply +12V to terminal No +12V at Power connection Supply +12V to terminal Insufficient ground connection Verify ground connection Blown power fuse Replace fuse LED on, no output Volume on head unit off Increase volume on head unit Speaker connections not made Make speaker connections Gain control on amplifier o
