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I hooked up my jh300 and my speaker's started to smoke

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My KLH powered sub maks e a humming sound when i plug it in but it only hums when the speaker is hooked up i tried others but did the same eventually speaker started smoking would wrong fuse do that


Wrap a wire around the outside Metal of your rca jack in back of your radio and ground the other end of that wire to the back of your radio and the noise goes away

May 09, 2015 | KLH Audio Players & Recorders

1 Answer

Mtx jackhammer jh300


Try another set of speakers to see if that works. If so, it could be your subs. Also, check ohm reading on each sub.

May 13, 2014 | Car Audio & Video

1 Answer

I recieved an item that doesn't work


It sounds like you didnt hook the negative to the negative and the positove to the positive. Thats the only way that will happen. Or if you put to big of speakers on the amp

May 04, 2013 | Car Audio & Video

1 Answer

2.1 speakers problem


You must of mess up on how you hooked it up, To do such a nice job of frying it, (Brainiac)

Dec 02, 2012 | Car Audio & Video

3 Answers

My mtx JH300 amp is going in to protection mode what should i do?


have you checked the amp fuse ? also never connect while battery is connected. be sure to connect the amp to amp specs as stated in user manual i had the same problem and it was as simple as a missed connection however it could be a multitude of isues causeing the problem most of which are in the user manual. also check the earthing cable is hooked up and be sure no power supply is earthing out on the car. Protection mode is generaly activated when the amp isnt connected properly or by fault of power supply. double check evenrything and check again.

Nov 15, 2011 | MTX JackHammer JH300 Car Audio Amplifier

1 Answer

Keeps smokin out the bac when i hook it up


This entry reminds me of my first install. My friend and I would hook up stereos, not knowing what we were doing. We thought radios ran on smoke, and if you hook it up wrong you let the smoke out. (laugh). But seriously, if there is smoke coming out of the equipment STOP. Your equipment is malfunctioning or you have something incorrectly hooked up to it. If this is a subwoofer or speaker that is smoking, it is telling you the voice coils are getting hot and it is about to fail. Again, more than likely, faulty equipment (it's hard to jack up hooking up a speaker). Anyways, if it's an amp, check the wiring. If the amp is smoking that means that there is something shorting on the motherboard. Might be time to look for different equipment or use that handy dandy warranty. Hope this helps.

Aug 22, 2011 | Car Audio & Video

1 Answer

Im having the problem with my mtx tc6001 amp smoking my speakers I hook up everything and when I turn on radilo speakers jump pop and smoke.


MAKE SURE THE SPEAKERS ARE CONNECTED TO THE AUDIO OUTPUT OF THE AMP AND NOT TO SOME WIRES SENDING DC POWER ........ IF THE AMPLIFIER HAS AN INTERNAL PROBLEM AND IS SENDING DC CURRENT TO THE SPEAKERS THIS WILL MAKE THEM SMOKE ALSO ...... HAVE THE AMP TESTED ON A BENCH IN A SHOP ...
MY GUESS IS IF THE SPEAKERS SMOKED THEY ARE DESTROYED AND CANNOT BE FIXED....... COIL ON THE BACK OF SPEAKERS NOW OPEN ---- SORRY TO TELL YOU THIS...

Jun 29, 2011 | Car Audio & Video

1 Answer

My MTX Jack Hammer JH300 Amplifier is warming up... A red led indicates that the amplifier is warming up.I checked the conections and everything seems to be ok, I've a 10" Jack Hammer JH 4510 Sub...


Check the speaker connections from the amp to the box and inside the box to the sub. Its possible these came loose from vibration. Also gently push in on the sub. It should move freely and feel spongy. If it drags or is stiff the sub may be bad. Use an Ohm meter and test the sub. There is an Ohm rating on the sub (usually 4) and it should be close to that. Also check the audio in. Maybe the amp/sub combo is fine but there is no sound going in. Use an MP3 player with a 3.5MM to 2M RCA cable as an input. Start with the volume all the way down and SLOWLY raise the MP3 volume.
Please Rate!

Apr 28, 2011 | MTX JackHammer JH300 Car Audio Amplifier

2 Answers

Amp is all hooked up and installed but sub is not making a sound. Problem with sub or amp?


Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Double check all connections. GOOD LUCK. A thumbs up would be greatly appreciated if this answer is helpful to you. Worth fixing.
amp-all-hooked-up-installed-but-sub-not-flhv0giodkaywsjitcb2uyf1-2-0.jpg

Dec 01, 2010 | MTX JackHammer JH300 Car Audio Amplifier

1 Answer

Why would a jvc start to smoke?


check the wiring's there might be a short somewhere

Jun 07, 2010 | JVC KD-LX10 CD Player

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