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I have a kenwood kac not sure of the # year is 93 it keeps blowing fuses during power up goes to protect mode makes a hiss sound from the switch on device that usualy makes the hiss for only a short second..I tryed unwiring and powering still the same even alternative power sources..please help me by explaining what this might be..I also before this ran my left sub bakwards (neg n pos bakwards) I found this out because my bass was not powerful so I hooked it up right then the fuses blew n what I described started to happen ( there wasn't any problems until I hooked the wires properly up)

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You have a short circuit some where in you system. Trace your power wire from the fuse that always blown and you will find your problem. Goodluck.

Posted on Apr 26, 2008

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2 Answers

Kenwood kac-9104d stopped working was in car music loud amp stoped worked I stop to change fuse it wasn't blown popped hood that amp was blown don't know what's wrong with it


Turn your gain below half. Make sure you have a solid ground, not a seat belt bolt. The fuse blew to protect the vehicle because there was too much power being pulled by the amp, possibly from overheating.

Sep 19, 2011 | Car Speakers & Subwoofers

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I have a kenwood amp. The fan is running but no power is running my subs. I have changed all fuses and checked all connections but it still will not turn on how do i solve thus problem?


Check your subs. Make sure they are not toast. Sounds like the amp is on, but it seems like its not working, when it could be your subs burned up. Push on them, and if they don't move and are rock hard you cooked your subs.

Other things it could be.
  • Bad RCA cables.
  • Incorrectly wired subs.
  • Amp in protection mode(must disconnect power to amp for a minute to reset)

Aug 08, 2011 | Kenwood Car Speakers & Subwoofers

1 Answer

Kenwood kac-749s amp power indicator flashing red. what does this mean and what can fix it?


Either there is a short in the in the amp or hopefully just the speakers or wires going to the amp. disconnect any speaker input output and turn your amp back on(you will only have power, ground, and remote wires plugged in at this time) and if the red protect light goes away, then there is a problem with the input/output speaker wires, this includes your RCA's. If it's still flashing red then there may be a stray wire shorting to the amp in the speaker outs, other than that your amp may be fried. By the way, if it works without any speakers connected, including RCA's try connecting one component speaker at a time starting with your RCA's(if using them), speaker in, then speaker outs. If it turns into protect mode, note which speaker/RCA it was and replace or repair the short.

Jul 11, 2011 | Kenwood Car Speakers & Subwoofers

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I have a 1800 watt kenwood amplifier an the red light on it blinks when i turn my volume up but i have no sound coming out of my subs an it did this while driving today an all the wiring is fine so idk...


sounds like wiring. could be two much sub for the amp. your sub max power should be less than amp max. from your description its trying to go into protect mode. trace wires, cheking for breaks , loose connections and such. also make sure your fuses are in all the way.

Jan 13, 2011 | Car Speakers & Subwoofers

1 Answer

Keep blowing fuse for radio what is colr of constant wire


The constant 12 volt wire is yellow. The accessory ( switched 12 volt wire) is red. The blue (power antenna) and blue/white (remote amp turn on) are also switched 12 volt wires. Make sure that they are not being grounded.

Oct 10, 2010 | Kenwood Car Speakers & Subwoofers

1 Answer

Kenwood KAC-X1R and one 12" Kenwood KFC-XW1222D at 1 ohm blow out.Why is that happening?


You may have a high resistance in your positive or negative power supply. with your amp you need to use at least a 2 gauge power cable. Is your fuse blowing? if so then a short circuit to ground may be causing that.
Good luck

Aug 01, 2008 | Kenwood Car Speakers & Subwoofers

1 Answer

Have a kenwood kac849 600w amp keep blowing fuse on amp as soon as power is too it power wire got wet and now this can i bypass that fuse some how


It would be very dangerous to bypass a fuse. If it keeps blowing, bypassing the fuse will only create lots of internal damage and maybe a fire as well. The fuse is blowing for a reason, the amplifier is not going to somehow start working because you bypassed the fuse. You also need to stop trying to turn it on, every time it blows the fuse, it keeps stressing the components inside. You have a shorted power supply, probably water damage as well since the power wire got wet.

I repair car amplifiers for a living, and can tell you with all honesty that bypassing the fuse would be a terrible mistake to make, the amplifier would end up being un-fixable with holes burned right into the board.

Please, just take it in for service or get a new amplifier. That is the only sensible thing to do. The amp will not start working bypassing the fuse, it will only start smoking.

Jul 10, 2008 | Kenwood Car Speakers & Subwoofers

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Ok i basically have a kenwood kac-6404 amp and its a 2/3/4 channel i was wondering how i can alter them or switch it from 2 to 3 to 4


i guess there is no switch. its how you wire the outputs together to create 1 channel from 2 channels. consult the wiring guide that goes with your amp

May 15, 2008 | Kenwood Car Speakers & Subwoofers

3 Answers

When i turn my radio up all the way my speakers cut out and then come back on


Yes it is probably too powerful for those speakers. Or the speakers could be defective.

Jan 13, 2007 | Swiss Audio SW12 Car Subwoofer

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