Question about MTX Thunder 3401 Car Audio Amplifier

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Fuses i hooked my amp up to some 15 inch subs was humping for 30 sec. and the fuses burned out so I replaced them and every time I try to put new fuses they burn out without even having the key turned top on need help asap thanks

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Your problem of blowing fuses more than likely isn't stemming from too low of an impedance, you probably have either a bad ground or a short somewhere along the power line run.

Posted on Jul 17, 2008

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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.

Posted on May 27, 2008

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I have a Kenwood 1800wat amp with to 10" Sony kickers, I was driving to my new town when all of a sudden the subs stopped working. I reached around and pulled 1 off 2 fuses were blown and it was a 40amp...


If the fuse should blow up; there might be a reason. Shorted component at the power amplifier circuit board of the sub-woofer amp. It will be best to contact any service technician to check the set. Never insert a fuse and switch ON the set, till the fault has been detected and rectified. It might make things worse.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

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Accidentaly switched 12v and ground on amp


NOTHING INTERNAL BUT YOU SHOULD PUT A 30 AMP FUSE BACK IN AS SOON AS YOU CAN TO KEEP THE 20 AMP FROM POPPING THATS THE WHOLE REASON FOR THE FUSE TO KEEP THE ELECTRONICS FROM BLOWING

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Your ground wire is large enough and properly grounded. It should be BOLTED to a solid poiece of metal on your car. Use a screwdriver, whatever so scrape off any rust as the connection should be a clean, BARE METAL connection. Next make sure your power wire and fuse are ok. If you are using round glkass fuses, replace it even if it looks good. I have seen those fuse smelt the solder in the ends. They can look great but really be bad.

SO go through all the basics and if it still gives you problems then it needs repaired. Please dont rate me un-helpful.

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-unhook the subs
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What you are doing is sending a low voltage (replicating an audio signal) into the amp audio circuit and allowing the amp to amplify it. If the amp makes the speaker pop each time you strike the probe, the amp is working.

You mentioned you need a 4 channel amplifier make the two, dual voice coil subs operate. The is not true and by hooking them up like that, there's a chance of damaging the subs. The reason is that the dual voice coils are interwoven and they have to get electrically identical signals or they fight against each other. The can mechanically fail, then, electrically fail, then even damage the amp too.

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