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Fuses I have a mtx 3401 amp that keeps blowing fuses for no reason that I can see help

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Check you spkr wiring in put if they are cross

Posted on May 26, 2008

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I installed a MTX Thunder 3401 with a PA sub. after turning the car oh every things works great. After about 2 mins of play, the thermal light begins flashing red and it will shut off the amp. After the...


You are def overheating, If the ohms rating of the subwoofer is too low it will cause this same thermal over heat. If you have 2ohms in sub and a 4 ohms stable amp, you will overheat. Check the ohms rating of the sub to make sure this is not the problem

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turn down music open sub box and put another speaker at wire and check again if work means sub is ok if not check the signal cable, and put there the speaker to try signal

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I have a mtx thunder 7801 and a sledge hammer box


Sounds like the subs are blown with the voicecoils fused together which means the amp is/was seeing a dead short ( zero Ohms reisitence) not good for any amp. Disconnect the speaker terminals from the amp and see if it turns on. The funny smell might have been the subs blowing up, i'll keep my fingers crossed for you.

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If the amp produces no boom with no signal input cables connected, I'd suggest using an LOC.

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Sep 30, 2008 | MTX Thunder 3401 Car Audio Amplifier

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Most likely you have a bad ground, Take all the wires out running to it then put the fuses in, check you ground, then install everything back

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Help!


You probably need to run 4 gauge wire if not already done so, and check the fuses on the amp, add the fuses together then buy the right fuse rating for the fuse connected under the hood

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1 Answer

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The most common reason for an amp (in good working order) to blow fuses is a speaker load that's impedance is too low. You may need to rewire your speakers.

Let me know if you have any other questions.

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1 Answer

My amp went out and i cant figure out y


Kind of a vague problem description, can you be a little bit more specific. What problems you are experiencing, how many speakers/subs were you powering with it, does it show that it has power, did you check the fuses?

Jun 29, 2008 | MTX Thunder 3401 Car Audio Amplifier

2 Answers

Fuses


Check the ohm measurement of the speakers make sure they are about the rated ohms.Check them UNHOOKED from the amp. (Useually 4 ohms.)

Try different subs.

May 25, 2008 | MTX Thunder 3401 Car Audio Amplifier

1 Answer

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could be bad mosfets or outputs, needs replace

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