Question about MTX Car Audio & Video

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Any sub's I hook my mtx jackhammer jh1200 up to instantly are forced down and eventually fry. Why is my amp doing this?

Posted by levi doiel on


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Mike Smith

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This problem is caused by one or more of your output devices (FET, Transistor, or IC) is shorted and causing the power rail to be connect through your speaker. Your amp boosts the 12v supply to a much higher +/- voltage rail which powers the amp's outputs. When the amp is shorted or overheated to a point of destruction you can end up with this problem.

It will need to be repaired by a technician.

Posted on Mar 04, 2015


5 Related Answers


  • 5 Answers

SOURCE: Mtx TC-6001 Amps Problem

I had same problem with a TC6001 and get solution from MTX, not send to MTX instead MTX kindly sent a quotation for parts to be replaced, I can tell you what parts need to be replaced if you still need a solution.

Posted on Dec 29, 2008



  • 15935 Answers

SOURCE: not a problem just a question

  • 100 watts RMS x 2 at 4 ohms
  • 200 watts RMS x 2 at 2 ohms
  • 400 watts RMS x 1 at 4 ohms in bridged mode
  • stereo or bridged mono output
  • 4-ohm stable in bridged mode
  • Tri-Way capable
  • requires 8-gauge power and ground leads — wiring and hardware not included with amplifier
  • 50-250 Hz high-pass/low-pass (12 dB/octave) crossovers
  • wired remote included for fingertip control of Punch Bass (0-18 dB boost at 45 Hz)
  • MOSFET power supply and output devices
  • MEHSA mounting technology increases the heat transfer from the MOSFET output devices to the heat sink, for higher power output, lower operating temperatures, and greater reliability
  • TOPAZ — noise-killing differential inputs that eliminate 80% of ground loop noise
  • Trans•ana circuitry keeps preamp voltages low and signal paths simple for outstanding audio quality
  • NOMAD — advanced protection circuitry for "intelligent" shutdown protection
  • speaker- and preamp-level inputs
  • 11-1/8"W x 2-3/8"H x 9-7/8"D

  • Wire your sub in bridged mode (4 ohm mono)
    + to + on amplifier
    - to - on amplifier
    (using bridging terminals)

    Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

    Posted on Apr 25, 2009


    • 68 Answers

    SOURCE: mtx thunder 1500 watt amp no sound

    Even if there is no visible damage, it could be that one of the transistors is blown, Use a multimeter to check the resistance of the transistors.

    Posted on Aug 05, 2009


    the pot

    • 188 Answers

    SOURCE: Sub not working and red light on amp stays on?

    the amp is under to much pressure get a bigger 1

    Posted on Nov 18, 2009


    • 19 Answers

    SOURCE: i have 4/3/2 ch. alpine f-240 amp- i want to hook

    run two 6x8s on each of the front channels of the amp. then depending on the sub you can bridge it on the rear channels.only if its a single four ohm. if its a dual 2 ohm sub run each coil on each channel. 1 coil-1channel. the other coil-the other channel. amp should run fine may run a little hot since it will be doing all it can do at a safe ohm load. just make sure it is mounted in a well vented area. should be safe.

    Posted on Dec 27, 2009

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