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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Need a wiring diagram to hook up two 10 inch subs and 15 inch sub a kicker 250.1 amp


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Only fuse you need is the power wire leading to your aftermarket amplifier for te subwoofer. Which most likely you have too small of a gauge of wire and burned straight through it, and if you haven't, add a 40 amp fuse near the battery where your power cable is hooked up to. Also use a multimeter to test your power wire on amp, check the

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I recently hooked up a new kenwood deck put new front and back speakers in. I hooked up a 1200 watt hifonics amp about to plug in my 2 15 inch rockford fosgate speakers rfz1412 and they dont play. All the...


Ok, so I am assuming that the other speakers are working, and it's just the subs that are not, right? If this is the case, start from the source. Make sure the RCA cables are plugged in and not crimped anywhere. Then to the amp, Did you check the gain levels on your amp. That is the knob next to the RCA input on the amp. Also, check the wiring to the subs. Make sure all your + are goinig to +. Sometimes in the "heat" of a good install, you just lose track of those things. When in doubt. Undo all your wiring and start from scratch. Good luck.

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No sound


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What would be the best amp to push 2 kicker 15 L7s


find the ohms on each subwoofer and how much it can handle. If you have two 4 ohm subs get a powerful MONO AMP and hook it up in parallal. If you have two 2 ohm subs get a (1 ohm stable) Powerful MONO AMP and hook it up in parallel or a powerful 2 CHANNEL AMP but the wiring can be a little complicated cause you've got to connect the subs in series and bridge it on the positive of 1 channel and the negative of 2nd channel for maximium benefit without burning out the 2 channel amp. If you got two 500 Watt subs then you got to find an amp that can put out 1000Watts anything less wont sound good and may burn out the subs because of too much distortion cause of lack of power.

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1 Answer

Amp burned out but fuses still good?


this is caused by inproper wiring from the speakers/subs to the amplifier.. an amp will still put out power to subs and speakers when it's wired improperly but it won't last for very long doing it... 6 months is longer than usual....

Dec 05, 2009 | MA Audio M1900XE Car Amp

1 Answer

Amp shuts off


is this a new problem or has it always done it?? it mos tlikely needs repairs, but try this first. Hook up ther + of one sub to the speaker + on the amp. Hook the - of that samne sub to the + of the other sub. Then connect the - of the other sub to the speaker - on the amp. This will run the speakers in series and will put alot less strain on your amplifgier. It will not "hit" as hard but it sbetter then having it shut of fall the time. I would also make damn sure that:
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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1 Answer

I do not hear any music through my 10" M Audio Subs (M Audio Sound System)


If you know how to use a multimeter, you can test the amp this way:

-unhook the subs
-hook up a cheapie speaker you know for sure works to one of the channels
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-put the positive probe on the inside of the input connector, being sure you make contact with th inner contact
-take the negative probe and tap it on the outside of the connector

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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