Question about Kenwood KAC-8401 Car Audio Amplifier

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Works perfect but then turns off

Every time i turn my stereo on the amp turns on perfectly but then the amp turns off and when i checked the amp it the red light turned on

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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.

Posted on Dec 04, 2008

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Posted on Jan 02, 2017

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The stereo, some times is turn off, and some times work perfectly. I guess than problem is conected a wire with 10 amps. The stereo have a fuse 15 amps. Could you help me. please. sorry my english nots...


No, its ok. Try to check the wire connection in the power supply. Check the fuse if the spring that pushes to contact is still working. The problem is on that area.

Nov 10, 2010 | Alpine CDA-9811 CD Player

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I have my amp hooked up perfectly, but why won't it work? is there a re-set or somthing? i checked fuses and everything


Unlike the stereo unit, amps doesn't have a reset button.

Check the fuse in your hood.
Check all wiring, especially the ground to chassis.
Check for voltages, remote turn on should have 12V to ground and power cable should have around 12 to 14 volts.

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Saturn 2002 VUE Turn Signal not working properly.


You need to check your left side turn/park lamp bulbs for correct part # & installation.If that checks out you deffinetely have a ground problem.When you have other lights blinking with you turn signals you have either a bulb incorrect or a bad/poor ground.If bulbs check out check your forward lamp harness ground.Hope this helps

May 15, 2009 | 2002 Saturn VUE

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When volume turned up subs pop then immediatly produce no sound


u might have to turned your amp so u can play both subs your amp might be to small to run both subs at the same time an u gotta play around with the settings on your cd player so when u blasted your subs it has that nice bass to it not that poping sound.

Apr 04, 2009 | Jl Audio 13W7 Car Subwoofer

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Whats is the perfect amp?


I have 2 of these 12" running in a Large slot ported box with an:
"Ultra Linear UL2402"
600RMS X 2 @ 4Ohm (Stereo) 1200RMS X 2 @ 2Ohm (Stereo) 2400RMS X 1 @ 2Ohm (Mono)
Can be run in Tri-mode with 3 8Ohm subs, which these subs are. I have not tried this mode. This is
600RMS X 2 @ 4Ohm = Max RMS of your subs. You should run the max of your subs, less wear on the amp you are using , and i doubt you will ever need to turn it up far before it blows out your trunk or window :P
1200RMS X 2 @ 2Ohm = Blown Subs!
Has 4 x 25amp fuses, most will tell you this only has an RMS of around 845, an "ultra linear circuit" produces twice the output power over Modern amps.
Can had on Ebay for around $100. I bought mine for $101.
This Amp pounds, i could quickly tell a difference going from 300RMS X 2 @ 4Ohm with a Kenwood amp. I Had to turn all my settings down on the new amp to have a better balance in sound.

Jan 29, 2008 | Volfenhag ZX-4712 Car Subwoofer

2 Answers

LIGHTS ON BUT NO BASS


Is the master/slave switch set to master? Have you tried feeding the signal into a different amp to make sure that there is signal reaching the amp?

Sep 18, 2007 | Car Audio & Video

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