Question about AudioBahn A2800E Car Audio Amplifier

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Red over light is on

What does the red over light mean. the amp turns on and fan starts running but when you hook it up to any sub it will not push the sub or subs???????

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I believe you have a short in your RCA jacks. Try unplugging both RCA's and see if the red light goes off. Your amplifier is in what they call protection. Meaning something is causing the circuitry to fail.

Posted on Feb 11, 2009

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Are you sure everything is correctly connected. If you are running the amplifier in bridge mode then take note that the load to the amplifier can be no lower than 4OHM. dreamsystems

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2 12" subs + 600W amp. Turn on, goes boom once, then red light


Is your gain all the way up? If it done this before, sounds like your over working the amp. Make sure your subs ohm load is capable with the amp load to. If they are 1 ohm and your amp is only 2 ohm stable, it would beat for a lil bit then go into protection mode to. Check your wires too.

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My subs/amp are not working


when you car is running, it charges the battery somewhat. So the voltage problem is not a problem. The red light means the amp is going into ''Protect Mode". This usually happens when something is wrong with the amp. Usually the amp is getting hot. Check all of you connectiong and check the final impedance of the subs. Make sure the amp can handle the impedance of the subs. If you need anymore help, message me.

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My subs don't bump to the beat, they just go THUMP THUMP THUMP...


It sounds like you need to ask for pro help mate, mybe the amp just needs setting properly, Is the amp on bypass for bass, or does the amp run the complete system

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Amp runs but then will just turn off and red light comes on


you may have fried the amp pre outs in the head deck, try the amps on another stereo

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Red Light


that means you probably have a shorted speaker wire, a bad speaker or the amp itself is bad, try disconnecting the speakers one at a time and see if it turns on or not. if the red light stays on with no speakers hooked up it means the amp is bad

May 30, 2009 | Kenwood KAC-7252 Car Audio Amplifier

1 Answer

Kenwood kac-7202


Nope it's not a high-to-low level converter problem, it's most likely a problem with one of two things. 1) either you've blown the output stage in the amplifier, or 2) you've hooked up your subs wrong and your amp is seeing to low of an impedance. The amp is supposed to be 1ohm stable, but we had the same problem. When the indicator light goes red it means that the amp has gone into protection mode, now you have to figure out why. If something in the amp goes bad or just disconnects from the board it will cause power protection mode. If you fry something on the board because you are running the amp to hard or at the wrong impedance it will go into thermal protection mode, however there's no simple way to figure out which has happened.

Have you tried hooking up some different subs to see if the problem remains? try this. If the problem no longer happens then you know it's your subs, if it does still happen then you'll know it's an internal problem.

Years ago I had a Kenwood KAC-821; long story short, I melted the main power wire right off of the board, everytime I turned the system up the amp would shut down.

Take you amp to an authorized dealer and have them bench test it for you.

Let me know what you find out.

Jul 14, 2008 | Kenwood KAC-7202 Car Audio Amplifier

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