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Getting a whistling noise through back speakers with RCA hookups.
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<blockquote data-quote="Lasherž" data-source="post: 8706106" data-attributes="member: 679555"><p>Usually this is an RCA issue caused by alternator whine caused by power being run close to (especially coiled) near the RCA cables (especially coiled). Does it still occur with the car turned off? One thing I would suggest trying is getting a 3.5mm to RCA adapter and using your phone to play music through it. If the whine is gone then expect RCAs or the source (Active noise canceling module for example?) to be the culprit and if the whine remains then expect an internal issue with the amp or grounding.</p><p></p><p>If I were you and that ended up getting rid of the problem, I would use the same source for all 4 outputs. The loss will be your fader no longer working forward/backwards on the head unit, but provided the signal source to the speakers has good range on it it will sound better with less complication.</p></blockquote><p></p>
[QUOTE="Lasherž, post: 8706106, member: 679555"] Usually this is an RCA issue caused by alternator whine caused by power being run close to (especially coiled) near the RCA cables (especially coiled). Does it still occur with the car turned off? One thing I would suggest trying is getting a 3.5mm to RCA adapter and using your phone to play music through it. If the whine is gone then expect RCAs or the source (Active noise canceling module for example?) to be the culprit and if the whine remains then expect an internal issue with the amp or grounding. If I were you and that ended up getting rid of the problem, I would use the same source for all 4 outputs. The loss will be your fader no longer working forward/backwards on the head unit, but provided the signal source to the speakers has good range on it it will sound better with less complication. [/QUOTE]
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Getting a whistling noise through back speakers with RCA hookups.
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