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» Termpro Audio Forum » Installer's Corner » Troubleshooting » Alternator Whine!

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Author Topic: Alternator Whine!
DarkAcura
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Member # 343

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I have the most annoying problem I have ever encountered. I have a noticeable alt. whine in my front stage.

When the car is on without the engine running, there is no problem. When I start the engine I hear a faint whine.

The Whine gets louder when I use the power windows or turn on the A/C.

I know it can't be the ground for the amp because I have change the position of the ground from the amp three times, one of which I changed the entire wire.

Every time I change the ground, the sound goes away for a little while, but as soon as I turn on the A/C or use the Power windows the sound comes back.

I also made sure that the speaker wires are not near power wires, and went so far as to cover them with a layer of electric tape. Please HELP!

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The one with the most toys when he dies, WINS!

http://homepages.go.com/~darkacura/index2.html


Posts: 305 | From: Brooklyn, New York, USA | Registered: Aug 1999  |  IP: Logged | Report this post to a Moderator
ZpaCam
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Ive had problems with whine 3-4 times and every single time it was due to noise induction from the RCA's. Either the actual interconnects, the headunit's preamp signal, or the amplifier's RCA input. Try changing RCA's or wiggling them at the amplifier a little and see if it helps. Otherwise the problem could be that the solder connection inside the amplifier is loose.

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Posts: 1019 | From: Southern California | Registered: Jun 2000  |  IP: Logged | Report this post to a Moderator
STACKHOUSE1
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Member # 2542

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Disconnect the RCA output from the head unit that goes to the amp. Take a small piece of wire and touch the center pin of the RCA to the shield or outer part of the RCA cord. Do this for both connectors (left and right). Is the noise there? If the noise is there, then its possible that the noise is being induced to the RCA cords, but if the noise is gone then we need to look at the head unit next. If the noise is still there after you jump the RCA's then do the same thing at the amp. Is the noise still there? If the noise goes away then its definetly coming in on the RCA's, but if the noise is still there then it a problem with the amp and should be bench checked.

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Be one with the music!
MECP certified.


Posts: 26 | Registered: Aug 2000  |  IP: Logged | Report this post to a Moderator
   

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