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Old 08-29-2011, 05:09 PM
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Default alternator noise / whine

i got an 2006 dodge caravan with a whine /noise comming from the speakers at no volume as the dial goes up ,the noise goes away it is a kenwood hu but tried all of the obvious problems tried grounding rca to hu same tried 3 sets rca same thing tried regrounding hu same tried differnt amp the same all i narrowed this down to is alternator because i unplug rca from hu and leave only remote wire for amp then plug rca in amp on the channel that speakers are on and the noise is there so basicly only on end of the rca's are connected and problem is present if i turn car off no problem. i spke to tech suppoet from my amp and was told its either the ignition or just bad alt. any one have any ideas how to solve this issue?
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Old 08-29-2011, 11:33 PM
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let me start with saying this fixed my problem and i have no idea if it will fix yours.

i to had a big problem with alt whine. i hooked up alot of cooling fans for a box that i built over the amps so i could have some cargo space in my suburban. once the fans had been hooked up i got a horrible whine. i solved my problem with running the amp activation wire from the head unit into a relay power directly off of the batteries for the amps and the whine completely went away. not saying this will fix your problem but for a $5 relay and about $5 worth of wire and maybe 20min of work its worth attempting imo.
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Old 08-29-2011, 11:50 PM
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Try a test lead{small piece of wire} between the RCA ground ring {outside metal connection} and the ground of the chassis. Kenwoods are known for their RCA based issues.

[as are Pioneers]
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Old 08-30-2011, 12:03 AM
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i have a dodge durango and spent a day trying to fix the alternator whine. i have a kenwood hu. i re grounded the hu instead of using the factory ground wire just add a new one. then i grounded the rcas to the chassis of the hu and it disapeared. goodluck it was stressful trying to find the issue
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Old 08-30-2011, 07:42 AM
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Quote:
Originally Posted by slowpoke View Post
let me start with saying this fixed my problem and i have no idea if it will fix yours.

i to had a big problem with alt whine. i hooked up alot of cooling fans for a box that i built over the amps so i could have some cargo space in my suburban. once the fans had been hooked up i got a horrible whine. i solved my problem with running the amp activation wire from the head unit into a relay power directly off of the batteries for the amps and the whine completely went away. not saying this will fix your problem but for a $5 relay and about $5 worth of wire and maybe 20min of work its worth attempting imo.
i can try this but im certain the noise is not from h u because if i unplug the trcas from the radio and leave pluged into the amp only the noise is present unless its going thru the remote wire i will try your suggestion thanks for the input.
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Old 08-30-2011, 07:45 AM
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Quote:
Originally Posted by iamsonic View Post
Try a test lead{small piece of wire} between the RCA ground ring {outside metal connection} and the ground of the chassis. Kenwoods are known for their RCA based issues.

[as are Pioneers]
i already tried this and at the same time i reground the radio to a diffrent source no luck. what gets me is if i remove the rcas from the radio and leave them pluged into the amp the noise is present if it was the h u it should go away correct?
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Old 08-30-2011, 07:46 AM
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Quote:
Originally Posted by yotabass1 View Post
i have a dodge durango and spent a day trying to fix the alternator whine. i have a kenwood hu. i re grounded the hu instead of using the factory ground wire just add a new one. then i grounded the rcas to the chassis of the hu and it disapeared. goodluck it was stressful trying to find the issue
i already tried this any other ideas ?
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