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post #1 of 7 (permalink) Old 03-02-2014, 08:01 AM Thread Starter
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Static from Aftermarket Headunit?

I just installed an "older" aftermarket headunit in my bro's cobalt, I dont know the model number but its one with an external "brain" that has to be placed under the seat and its a flip out james bond screen style. The only thing is at low volume on radio and on Aux in theirs a static sound, it'll only go away if you turn the radio up to about half volume+ or completely off, but at low volume that static is driving him nuts (I understand)

Anyone know what would be causing this? His stock headunit didn't do it.

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post #2 of 7 (permalink) Old 03-02-2014, 08:05 AM
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Mine does the same thing in my ls if I have an aux cord plugged in to phone or something and no music playing I get a whining lime sound that gets louder as I go faster

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post #3 of 7 (permalink) Old 03-09-2014, 12:48 AM
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I get that same thing too with the aux. It's irritating.
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post #4 of 7 (permalink) Old 03-09-2014, 09:14 AM
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My blazer did that. It was a loose ground I do believe..it was a wire goinfrom the radio bolted to the metal of the car. Maybe check your wires. Also your speaker wires can pic up noise if not set up correctly I'm pretty sure

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post #5 of 7 (permalink) Old 03-09-2014, 09:37 AM
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Ground loop isolator might help.

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post #6 of 7 (permalink) Old 03-09-2014, 10:03 AM
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elaborate... please

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2008 Victory Red HHR SS - Stock
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2007 Sunburst Orange Metallic LS Coupe - Sold
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post #7 of 7 (permalink) Old 03-09-2014, 11:24 PM
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Yup sound like a good old alternator noise, bad RCA cable, ground
Try your grounds that will kill two birds with one stone(and check the alternator out it might be going, but doubt it) then check to see if any speaker wires are near any power wires...
I'd have to hear it to really tell ya...
Whine is usually ground or alternator noise gets louder\faster wiss sound the faster you drive..
if all else fails do the noise filter blocker...
But static is usually bad wires..or knobs on the stereo itself..

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