I have a Kenwood DDX7019, with an Earthquake Sound XTREME 900W.5 channel amp. I was leaving work and it was like 100 degrees outside, and I add a humming noise I tracked it down to the amp, and found it to be the exhaust fan. I asked a couple of my friends and they say that the amp should not be doing this. They suggested that the remote wire was hooked up wrong. So I tested the cables, and the remote wire is fine. The hot and ground is fine. Any other ideas why the fan on the amp turns on when the car.
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Re: Fan on Amp turns off with everything off.
Yes , it is normal for the fan on the amp to turn on when the internal tempature reaches 110 degrees the amplifier is not an intellegent device, all it knows is the temp threshold has been reached and its themostat will close the relay and try to exhaust the heat from the amplifier....I have this same amp, and I live in florida...thank goodness it is a very minimal draw,,,btw if it was a 100 outside it was well above 100 inside your car and even hotter inside the amp ,,the heatsink will conduct heat inside the unit when the unit is off....so the unit is behaving normally...Congratulations for buying a high quality piece of electronics
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here is what you would do. the next time that your speakers cut out. leave everything running goto the speaker and slightly push on it. if the speaker starts to work again you have blown the coils loose and they are not making contact all of the time. you need to replace your speakers, or they could do more damage to your amp or head unit
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If you have an aftermarket stereo, the hook up is fairly simple. On your amp there should be a minimum of 5 terminals and an audio input. one is for remote which is connected to the blue wire on your stereo. Second is your ground which is your negative connection. it should be connected to the body of the car close to the frame. Third is your hotwire which is the positive lead, it should go straight to your battery. The fourth and fifth are speaker wires, you may have 2 or more of these that have + and - signs above or below them. When wiring the speakers make sure to match the positive and negative connections on the speakers. If your rewiring all of the door speakers to your new amp then the colors that you see once you have them out are the colors you route to the appropriate locations on your amp. If this is for a sub then you just the connect th positive terminal on the sub which is red to the + on the amp and the black terminal on the sub the the - location on the amp.
Lastley there should be an audio input that runs from your stereo to your amplifier. This wire should be ran as far away from the positive wire as possible to avoid engine noise coming through your speakers.
Assuming you've already checked all your wiring, it sounds like a problem in the amp circuitry. Would you say it happens when the amp heats up? I'm guessing an input opamp circuit is messing up when the amp gets hot. If you are electronically inclined you could open it up and look for a poor solder joint. Other than that you will likely have to get it professionally serviced.
In most recivers or amps yes if there is a short in one channel all the amps go into shutdown or into the protect mode. Now if you know how an amp works then you should be able with a schematic to find out what amp is causing the over load simply by see in the schematic where the speaker output is on the curcuit and then measure for a DC B+ . Thats the amp you would disconnect to conferm that all the others were ok as an output on an amp curcuit shouldnt have more then .3 to .8 volts dc unless its unbalanced.. Seek a pro to assit you if you dont have the equipment to test the amp and for sure get a service manual or schematic diagram. Good Luck