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Audio whine/ pop

Old 01-24-2013, 12:57 PM
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Audio whine/ pop

I'm hoping some of you audio guru's can help me. Recently, my stereo started having a whining noise. It's a Kenwood deck running through an amp to all the speakers. It's a high pitched whine, only audible with the stereo on and varies with engine speed. It's had a whine, but only when I was on an AM radio station. Now it's doing it all the time, regardless of if it's on radio, cd, or aux.. My sub would also pop when I turn the car on/off. Any idea's on how to fix this? I know next to nothing about audio equipment so any help is appreciated.
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Old 01-24-2013, 01:33 PM
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Ground Loop. Check your grounds behind the deck and at the amps and make sure they're solid. Check the solder joints on your wire harness (if it's crimped, solder them). Make sure your connectors aren't loose and how did you ground your amps? Make sure that you sanded down paint to bare metal.

Since you're amped, you may want to route your RCA's differently to keep them away from power wires, or even upgraded your RCAs and then reroute.
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Old 01-24-2013, 01:36 PM
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Your ground has probably come loose. You are throwing stray power around and it is being picked up by your speakers.
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Old 01-24-2013, 02:38 PM
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Thanks guys. I will check the grounds and update.
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Old 01-24-2013, 02:39 PM
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either your ground is loose, or what was doing it in my buddies car was he had the power and rca running down the same side in his car. we ran one down the passanger side, one down the driver and problem is gone.
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Old 01-24-2013, 03:50 PM
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i'll take a look at that too. i'm not sure how it's routed, but if i can't move it, is there anything i could use to insulate it?
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Old 01-25-2013, 06:04 PM
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This is where the amps were grounded. I think I need to find a new ground point because both surfaces are painted. Thoughts or suggestions?

Audio whine/ pop-forumrunner_20130125_170035.jpg
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Old 01-25-2013, 06:25 PM
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I learned the long way that what you're showing is NOT an effective ground. As others have already said it needs to be on UNPAINTED metal.

So you could still bolt it to the same place as shown. Just remove that black plate and get some sandpaper right near the bolthole. Sand it down to bare metal. Attach the grounds and then the metal bracket on top (hope it fits)

Last edited by CHESTON; 01-25-2013 at 06:28 PM.
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Old 01-25-2013, 07:03 PM
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Originally Posted by CHESTON
Sand it down to bare metal. Attach the grounds and then the metal bracket on top (hope it fits)
Did that and hooked everything back up. Gonna test it out over the weekend.
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Old 01-25-2013, 09:49 PM
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REdo your grounds, make sure your RCA's are not ran near grounds or power.

The sub poppying is normal unless its a huge one where it hurts your ears.
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