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My amp went out and i cant figure out y - MTX Thunder 3401 Car Audio Amplifier

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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?

Posted on Jul 17, 2008

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800 watt mono block sony xplod amp blowing my dual coil 1500 watt subs


if the wiring to the sub is correct, then you have something wrong with the amp itself... something is power surging to the subs which is causing them to blow

Aug 25, 2012 | Car Amplifiers

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Kenwood amp worked fine yesterday when I went to start my jeep I noticed my sub was not working when I looked at the amp the blue light was not on, I looked at all the fuses they looked fine cant figure...


If the light is out, it's not getting power or is in protect mode to prevent further damage. If you have a voltmeter, measure the voltage between GND and 12V (BAT terminal) and also between GND and REM terminal (with the car and radio on).

If neither has voltage, your ground wire has come loose. If the bat terminal has no voltage, your fuse under the hood is blown (they can blow and still look fine sometimes) or your power wire is loose or broken. If the REM terminal has no power, your wire is broke or has come loose from the back of the stereo.

Jul 03, 2011 | Kenwood KAC8105D Car Amp

1 Answer

My fuse went out on my sony 800 watt amp and cant figure out how to swap out the fuses.


The fuse blew for a reason DO NOT replace it without repairing the problem. You will burn up more components.

Apr 27, 2010 | Sony Xplod XM-554ZR Car Audio Amplifier

1 Answer

My amp protection light flickers red and green i cant figure out whats wrong


unplug ure sub and see if it still does it? does it have a good earth and power could be a problem in the amp

Apr 26, 2010 | Kicker 06ZX750.1 Car Audio Amplifier

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I cant figure out my amp wire color code


every amp is wired the same its pretty easy... the red wire is your positive and needs to be hooked up to the battery.. black is the ground and needs to be touching something metal in your car. blue wire is remote start wire it goes from your radio to amp then plug your red and white rca cables from amp to radio

Dec 15, 2009 | Pioneer Car Amplifiers

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Kenwood kac-7202


Nope it's not a high-to-low level converter problem, it's most likely a problem with one of two things. 1) either you've blown the output stage in the amplifier, or 2) you've hooked up your subs wrong and your amp is seeing to low of an impedance. The amp is supposed to be 1ohm stable, but we had the same problem. When the indicator light goes red it means that the amp has gone into protection mode, now you have to figure out why. If something in the amp goes bad or just disconnects from the board it will cause power protection mode. If you fry something on the board because you are running the amp to hard or at the wrong impedance it will go into thermal protection mode, however there's no simple way to figure out which has happened.

Have you tried hooking up some different subs to see if the problem remains? try this. If the problem no longer happens then you know it's your subs, if it does still happen then you'll know it's an internal problem.

Years ago I had a Kenwood KAC-821; long story short, I melted the main power wire right off of the board, everytime I turned the system up the amp would shut down.

Take you amp to an authorized dealer and have them bench test it for you.

Let me know what you find out.

Jul 14, 2008 | Kenwood KAC-7202 Car Audio Amplifier

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Need a lil ore help!!!


If the overcurrent of DC offset lights are not green, the amplifier probably has blown output transistors.

To eliminate other problems, disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up normally (all lights green), the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.

Jan 05, 2008 | Sony XM-2150GSX Car Audio Amplifier

1 Answer

Amp not working correctly goes into protection


Disconnect the speaker wires from the amplifier and see if it still goes into protection mode. If it still goes into protect with the speakers disconnected, there's a problem with the amp; if not, you may have a blown speaker or a shorted speaker wire.

Feb 22, 2007 | Legacy LA2098 Car Audio Amplifier

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