Question about Kenwood KAC-9152D Car Audio Amplifier

3 Answers

Won't Turn On--- Positive, Negative touched

Well I am not sure why but i was hooking up a new sub,, MTX 9500 15 (not sure if that matters) I had to unhook the power to get the speakers wired so I did and then when i was putting the power back on and it sparked because the positive and negative touched. Now my amplifier will not work at all, I hooked it up to a different car to see if it was the remote wire but did not work. I do have a farad capacitor hook up to the amp.

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  • Gell Sep 06, 2007

    I tried this but it did not work so looks like I will just have to take it in unless someone has another idea thanks for the help though

  • Gell Sep 22, 2007

    I tried to hook it up without the capactior but it still didnt work. Not sure why still :-\

  • CityKidd Nov 16, 2007

    Did the same thing touched negative to positive but light on amp will only come on when you wiggle the fuse in and out and the light comes on then fades out slowly.

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3 Answers

Change your fuse

Posted on Dec 28, 2007

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I've had the same problem, what happened to me was i blew some diodes in the amp and it had to be sent to kenwood for repair.

Posted on Sep 28, 2007

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Gell...it sounds to me like you may have fried the capacitor...try hooking it up without the capacitor in line,and check to make sure the in line fuse on your power lead is ok( usually in theengine bay) and also that the fuse on the amp is ok too.

Posted on Sep 06, 2007

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1 Answer

Whats the best way to wire an mtx thunder152 to an jl audio 12 w3-d6 duel voice coil sub


Take both positive leads to the positive of the amp. Both negatives from the sub to the negative of the amp. Utilize the bridged output connections. This would present a 3 ohm load which would be around 100 watts rms (rough estimate)

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What's the best way to hook up 2 Hifonics hdl12d4 subwoofers to a mono amp


Ok, your post has two different models listed. Let's start with something you need to know about your amplifier. Is it one ohm or two ohm stable. This will make a difference. Also, whether your subs are single voicecoil (HFI12s4) or dual voice coil (HDI12d4).

Let's start with the easy scenario. Let's say your amp is two ohm stable and you have two single voice coil subs. It's simple. You go from the positive of the amp to the positive of both subs and the negative of the amp to the negative of both subs. This will provide a 2 ohm load to the amplifier, thus pulling all the power out of it.

Unfortunatley, if you have two dual voice coil subs, you won't be as efficient. You will only have the options of a 4 ohm load or a 1 ohm load.

This is where having a one ohm stable amp would come in handy. If the amp is one ohm stable, hook the positive of the amp to all 4 of the positives on the subs, and hook the negative of the amp to all 4 negatives of the subs. This produces a 1 ohm load.

WARNING!! If you have a 2 ohm stable amp DO NOT use the last wiring scenario. It will fry your amp.

Now, the last is a little trickier. This is for two dual 4 ohm subs. Follow closely. Hook the positive of the amp to one of the positives of each sub. (do the next step to both subs) Go from the negative of the voice coil that you hooked positive from the amp is hooked to, and hook that to the positive of the unused voice coil. Then go from the negative of that voice coil and hook to the negative of the amp. Make sure this is done on both subs. This will give you a 4 ohm load.

Hope this helps

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I assume that the sub is a dual 4 ohm and you want a 2 ohm load. It's easy. Just make sure that both positives go to the same positive source and both negative go to the same negative source. It's called a parralel set up. hope this helps

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Positive out from amp to positive on first coil. Negative on first coil to positive on second coil. Negative on second coil to negative out on amp.

If you have 4 ohm coils, that will make it an 8 ohm load for the amp. It won't be anywhere near as loud, but it'll run a lot cooler.

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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...


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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.

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1 Answer

What is Positive and what is Negative


Hi Mason.
Are the positions colour coded in any way?
Red = Positive
Black = Negative
I've looked at some photo's from the website and at a guess I would say that yours are the push on crimp types, so no colour markings.
Have a look at the pdf wiring diagram they supply here as it may shed some light on things:
MTX Thunder US-XT12-44
I've looked over loads of forums but none seem to mention the wiring of these subs.
Understandably you want to get this right as they are a very nice set of subs when they're up and running.
If all else fails try looking at the MTX contact list and ringing one of their supported dealers for more info.
Regards
Mike

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1 Answer

Wiggle the positive wire to get power and have to unplug subs to turn car off


Ok it sounds to me that your remote wire is not hooked up right casue if you trun your car off then your amp should power down an when you trun your car on it should power up

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1 Answer

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check your fuse up front first. some amps will turn the light on with only the remote wire (the 12 volt signal from the head unit). That may be your issue. If not you need to check your signal input. try hooking the rca's to a diffrent source, i.e. other radio your tv anything with Rca out put. If still you get nothing then pull your subs out and take a regular 9 volt battery and touch the leads to the positive and negative of the sub. Just for a moment though if the subs move when they come in contact with the charge from the battery then my last suggestion would be to take it to a store where you can have an authorized tech check out the equiptment. Good luck

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