Question about Kenwood KAC-9152D Car Audio Amplifier

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Kenwood KAC-8401 light goes from blue to red when turned on

I just got this system hooked up yesterday a 1000 watt amp to a single 12" sub it worked great from a couple hours. Now when ever i turn it on the light goes from blue to red and nothing comes out of the sub. All of the fuses are fine and connection too. if anyone can help please

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Either the amp is ad or the sub got shorted? You can check itby disconnecting the Sub and seeing if the amp comes on blue then. If yes, then the sub is shorted. If no, then the amp is shorted. Also chck the voltage AT THE AMP. Make sure that it is above 12 Volts.

Larry T
Winona Lake, IN
http://www.cybersoundsaudio.com/cybersounds/vehiclepics.html

Posted on Jan 28, 2009

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My kenwood KAC-7204--- the wiring is hooked up right, I just got a 2000 watt max sub 1000 watt rms, i was running the amp in bridge mode and it ran for 1 day than it turned off. I checked it and the fuse...


when i was running my sub off bridge mode this kept happening to me. I ended up just running two subs and for some reason the fuse stopped blowing. i think there is something wrong with these amps.

Jun 04, 2011 | Kenwood KAC-7204 Car Audio Amplifier

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Can i run just 2 subs on this 1200 watt kenwood 5-4-3 and if so what way will i get the most power, i mean do i bridge it or pute the speaker wires in other ports


you can run 2 subs given that you dont go over 2 ohms of resistance and that the subs are rated at 1000 watt max each around 4 or 500 watt rms. if your not sure about ohms dont bridge it and get single voice coil subs. this amp is capable of about 700watts constant power 1200 max spike if the voltage stays at 12 or higher.

Feb 05, 2010 | Kenwood KAC-X650D Car Audio Amplifier

1 Answer

Blown amp possibly?


i have the same amp with the same problem.....your best bet is to do what i did get a better amp(audio pipe,spx,kicker,punch,etc) do not get pioneer amp or sony anything

Jun 20, 2009 | Kenwood KAC-X501F Car Audio Amplifier

1 Answer

Works perfect but then turns off


Be sure to have a good ground. If that is not the problem it could be the speaker or sub are hooked up to pull a certain ohm off amp and the amp is not rated to run at that ohm it will cause the amp to go into protect mode. Check how many ohms your speakers and amp are rated. Rewire speakers to specs.

Dec 02, 2008 | Kenwood KAC-8401 Car Audio Amplifier

1 Answer

Need help


It should be better to use the Pioneer GM-7200M Amp with your subs.

For 8 ohm setup hook up this way:
Amp out+ to Sub1 +
Sub1 - to Sub 2 +
Amp out - to Sub2 -

For 2 ohm setup hook up this way:
Amp + to Sub1 +
Sub1 + to Sub2 +
Amp - to Sub1 -
Sub1 - to Sub2 -

Nov 09, 2007 | Kenwood KAC 6201 Car Audio Amplifier

1 Answer

KAC-8401 Shuts off Blue light still lit


HI RLF,

You might want to turn your Gain setting down a little. Also Look to be sure you have enough air flow around the amp. If it cannot breath, the heat from the amp will build until it wigs out. Use your Ingenuity to get more air to the AMp.

Nov 05, 2007 | Kenwood KAC-8401 Car Audio Amplifier

1 Answer

Amp not powering up correctly.


check transistor of the unit 1 or 2 tans. bad use a tester. the unit is overload protected. replace the deffecteve parts

Sep 17, 2007 | Kenwood KAC-8401 Car Audio Amplifier

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