Question about Kenwood KAC9105D Car Amp

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My Kenwood KAC-9105D amp quit working in the middle of a song. The music was loud, but I have had it louder before and it was fine. All the fuses on the amp and in the power cable are fine. The capacitor is still working. Their is still a small light under where it says "Kenwood" that turns on. The manual mentions a "protection function", but doesn't say anything about getting it out of protect mode. Please help.

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Protection mode engages when there is either a crossed/shorted speaker wire, an incompatible speaker or a blown speaker with fried voice coils.

check your wires for shorts and/or loose strands of wire, your speaker ohmage (should be single coil, 4 ohm) and your speaker's operation. if you push the speaker in about an inch or 2 and there is some resistance, like its sort of scratchy when it moves, then the speakers voice coils are fried. speakers should push in and out freely, with no scratchiness or resistance, until they bottom out at 1 to 2 1/2 inches.

if it is not the speaker or the wiring, then the amp is damaged.

Posted on Nov 07, 2010

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