Question about Car Audio & Video

1 Answer

My car AMP will play for a few minutes, then just Turn OFF

I have a mono-block MTX amp running 1 12" sub. It will play fantastic for a few seconds to ~10 minutes tops, then the amp turns off (does NOT overheat) - all the lights go out. Car lights do not dim or flicker, amp still turns off regardless of gain settings, volume, or drain from different levels of bass Circuit City performed the install, sent the amp back to MTX, MTX checked it, returned it, it still does the same thing... Help please :(

Posted by on

  • Chrisdun1008 Jun 01, 2008

    MY kenwood KAC-9102D amp is wired to 2 12" Alpine type R's. I hooked everything up and it worked beautifully for a day. The next day I turned the volume up and the amp cuts off? i checked the connections with a test light and all 3 connections are good but the power light is off. Please help im lost!!!

  • seancouch Jul 09, 2010

    my protect lite come's on when i plug in my rca cable's this just started yesterday



1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Contributor
  • 65 Answers

Is your sub single voice coil or dual? If it's dual, is it wired in paralel or series? It's possible for an amp the heat up so fast, the outside is not hot to the touch. Also, the next time it happens, use a paperclip and short the 12+ to the remote wire on the amp and see if it comes on. Let me know, and be sure to leave feedback or I don't get paid

Posted on Oct 03, 2007


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Power light on my power acoutics amp and also my mtx 81001 thunder mono block amp turns on but no sound comes out to the subs?? how do i fix it? or they are no good

you maybe plugged the RCA's into the wrong inputs. or the amplifier is damaged.

turn up the gain and check the output settings of your deck and turn on the sub out channel.

Oct 19, 2013 | Car Audio & Video

1 Answer

Hi i have a mtx jackhammer JH202 amp and a mtx jackhammer jJH5510D sub and every so often when a song is playing there will be bass and al of a sudden it will shut off and after a few minutes it will come...

The problem was caused by you trying to run a 2OHM load on an amplifier which is designed to run only on 4OHM when it is bridged, the amplifier is most definatley cooked. An authorized MTX technician should take a look at it, to determine just how wide spread the damage is.

Feb 11, 2011 | MTX JackHammer JH202 Car Audio Amplifier

1 Answer

Need to know how to wire my system ...I have the infinity reference series 611a I was told it was a mono block but it has two channels on the exterrior...also I have two 12 inch MTX thunder dual voice coil...

it all depends on what kind of box the mtx subs are in as far as wiring the subs. The best way would be take the speaker wire from both sub boxes and run the positive into the right positive then the negative into the left negative. and run 8 gauge wiring kit to the amp because 10 might be to small and 4 is to big 8 gauge is perfect for this amp.

Jul 18, 2010 | Infinity Reference 611a Car Audio...

1 Answer

Sub wiring monoblock amp two pos two neg which one to use

well if the amp is a mono block for sure you just choose any combination of 1 positive and 1 negative to wire your subs. They are actually summed inside the amp. meaning both positives go to the same terminal inside and both negatives to the same negative on the inside. It's just that way for ease of wiring in high wattage and multi sub systems

May 29, 2010 | MTX JackHammer JH600 Car Audio Amplifier

1 Answer

Just hooked up mtx 500d mono amp and 12 inch sub worked for a 1/2 hour then sub quite and led on top of amp just flashes.

either ur ohm load is way off ur pos n neg might be touchin or more than likely u blew u sub is it scratchy when u push in the middle of the cone ? does it push in at all?

May 14, 2010 | Car Audio & Video

1 Answer

How can i bridge a mtx 9500 using a mono amp?

You cant bridge it to the MONO AMP . You can only bridge subs & speakers to 2 CH & 4 CH AMPS that are bridgeable. Because if it appears that there is 2 channels on a Mono amp its so its convenient for you to hook up 2 4ohm subs to it easily But both channels are actually connect internally together in parallel inside the amp unlike a 2 channel they are separate.

So just connect your mtx 9500 to a plus and a minus and doesnt matter which since all the + terminals of are connected together and - are connected together already.

Whats important is on the side of the sub/box it reads 2 ohms. The lower the ohms the more power the Mono amp will put out. Mono amps are designed to handle 2ohm loads.

If it reads 4ohms The MONO amp is the wrong amp to use cause the power will be weaker. So if you have a 1000 Watt Mono amp at 4ohms the sub will only get 500 WATTS Max while a 2 ohm will get the full 1000 Watts.

If it reads 4 ohms connect it to a 2CHANNEL AMP and BRIDGE IT (connect + of the sub to 1st channels positive of the amp then connect - of the sub to 2nd channels negative of the amp) . The power will be doubled when you bridge it on a 2 channel amp. NOW if it was a 2 ohm sub and you bridged it to the 2 channel amp it will fry the subs and ruin the amp. 2 CHANNELS CANT TAKE A 2OHM LOAD BRIDGED OK.

Apr 08, 2010 | MTX (SLH-T7512X2-A) Car Speaker

2 Answers

What is best amp to run 2 12 inch cvr's

12In Kicker CVRs
are Dual Voice Coil, and You can run each voice coil around 200 Watts RMS

So each sub will have a 400 Watt RMS and 800 Watts peak.

Now since you have 2, Your total will be 800 Watts RMS and 1600 Watts Peak.

I would get really any amp that sits at around 800-1000 Watts RMS.

These are kicker but they are low end so i wouldnt push them to the extreme.

1000-1200 Watts RMS Max and but keep the Gain down on the amp. They will hit no doubt but i wouldnt push these subs or you will be disapointed in the long run.

I would get a Fosgate or MTX amp.

You can get any amp really but find something right around 1000 Watts RMS and it will push those well.

You can go mono block or a 2 channel, just depends on how you want to wire them.

Be careful though. If your running them bridged right now with your mono block, do not run them parallel bridged on a 1000w RMS Amp, you will blow them so fast lol

(RMS = Root Mean Square. Or in other words is the continuous wattage being sent from the amplifier to the subwoffers)

Feb 15, 2009 | Kicker KX1200.1 Car Audio Amplifier

1 Answer


I looked up that amp, it doesn't have a listing for 2ohms x1 but it has 2 ohms x 2 and its at 250watts. For this situation, I would recommend a different amp or different subs. Right now you are getting the most you can get out of your sub/amp combo, if you only have single voice coil subs. Which is common in the mtx preloaded boxes. Either you want an mono block amp stable at 2 ohms or 2 dual 4 ohm voice coil subs. If you got the subs you would wire the voice coils in series so you could get 8 ohms then the subs in parallel so you could get 4 ohms, which would be the best for that particular amp. Good luck.
-Andrew Hawkins

Aug 23, 2008 | Legend LA1490 - American Legacy Series 2 -...

2 Answers

Directed 1100d 2-channel amp

You will bridge the amp, and if the subs are all 8 ohm subs, you can probably wire them all in parallel, if they are all 4 ohm subs, you would wire then in series.

Oct 17, 2007 | Directed 1100d Car Audio Amplifier

1 Answer

Amp only plays during low engine rpm

yes, the overvoltage...compounded by maybe an alternator that is also not operating within limits (Does your headlights or horn get brighter / louder?). look inside the amp for any adjustable device for OVER VOLTAGE THRESHOLD or similar and turn it slightly clockwise

May 30, 2007 | MTX Thunder 8302 Car Audio Amplifier

Not finding what you are looking for?
Car Audio & Video Logo

Related Topics:

935 people viewed this question

Ask a Question

Usually answered in minutes!

Top Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

4905 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers


Level 3 Expert

77932 Answers

Are you a Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides