Question about MTX JackHammer JH1200 Car Amp

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The fuse in my mtx jackhammer jh1200 seems to be blown. how do i replace it?

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Posted on Jan 02, 2017

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The problem was caused by you trying to run a 2OHM load on an amplifier which is designed to run only on 4OHM when it is bridged, the amplifier is most definatley cooked. An authorized MTX technician should take a look at it, to determine just how wide spread the damage is.
dreamsystems.

Posted on Feb 11, 2011

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SOURCE: My mtx jackhammer amp stopped working but when

Hi, Check for blown fuse(s). Replace (all) Note; do not put higher rated fuses in place. You may damage more parts or cause fire. Good luck.

Posted on Jun 13, 2011

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1 Answer

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


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.

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ur rca wires or its the holder itself if the subs do it when the rca wirtes are off the oits the bord inside the amp

Jun 21, 2011 | MTX JackHammer JH1200 Car Amp

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My mtx jackhammer amp stopped working but when turned on only the fan turns on, nothing else works


Hi, Check for blown fuse(s). Replace (all) Note; do not put higher rated fuses in place. You may damage more parts or cause fire. Good luck.

Jun 13, 2011 | Car Audio & Video

1 Answer

Hi i have a mtx jackhammer JH202 amp and a mtx jackhammer jJH5510D sub and every so often when a song is playing there will be bass and al of a sudden it will shut off and after a few minutes it will come...


The problem was caused by you trying to run a 2OHM load on an amplifier which is designed to run only on 4OHM when it is bridged, the amplifier is most definatley cooked. An authorized MTX technician should take a look at it, to determine just how wide spread the damage is.
dreamsystems.

Feb 11, 2011 | MTX JackHammer JH202 Car Audio Amplifier

1 Answer

The amplifier blew the 35A fuse, i replace the fuse with a 40 fuse and it only works for a moment then the subs cut off. can you help me plzz im in need of bumping.


Dont use a larger fuse. You can damage the amp. Make sure your alternator cables and battery have good connections and plently of current available.

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How do i true it off when my car is off


check the power led. always connect the red wire to (+) car battery and the remote cable to the blue wire in the radio.

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check that the ground wire is bolted tightly to the chassis of the vehicle.

Aug 08, 2009 | MTX JackHammer JH600 Car Audio Amplifier

1 Answer

When i hook up my amp. i have all my wires hooked up right,


this is a signal crash either your speaker wires are crossed (wrong wiring phase) or your RCA jacks need replacing also it could be inside your amp the solder lines may have fused. If after checking and replacing wiring problem persists return to MTX for repair.

Feb 03, 2009 | MTX JackHammer JH202 Car Audio Amplifier

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my amp is blowing fuses?? any hints?

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