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hissing noise from speakers when ignition is on

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Old 05-23-2003, 03:28 PM
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Default hissing noise from speakers when ignition is on

I put in an amp and speakers for the back. Everything worked fine for 4 months then one day I hear a hissing sound. This happens only when the car is running. Does anyone know anything about this?
Old 05-23-2003, 03:35 PM
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Default interference...when you rev the engine is it worse?-

you may need to seperate the battery cable and audio hookup cables? where do you have them running now?
Old 05-23-2003, 03:59 PM
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bad ground or Rh interference filter needed
Old 05-24-2003, 10:11 PM
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Default Re: interference...when you rev the engine is it worse?-

no, it only hisses when the engine is running. I ran the power cable at the driver's side. The thing I don't get is why didn't it hiss before. I checked all the wires, they are all in the same place.
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