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Thread: Engine Noise when using DC charger and Aux port with DROID

  1. Droid
    Monshroud's Avatar
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    56823
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    Apr 2010
    Location
    Colorado
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    Phone
    Motorola Droid Maxx
    #1

    Engine Noise when using DC charger and Aux port with DROID

    When I hook my DROID up in my car using just the headphone jack to my cars AUX jack things work fine. Once I also connect the vehicle charger I start to hear engine noise. The noise increases in frequency as I rev the engine.

    How do I resolve this issue? Is this a grounding issue in the car? If so, how would I get them to fix it since the car is under full warranty.

    Do I get a DC power filter, a different brand car charger, a audio cable with a Ferrite core? I love using my DROID to play music using either the built-in MP3 player or Pandora, but on long car trips this becomes an issue.

    I am open to suggestions and look forward to your responses.

    Thank you in advance!
    Monshroud
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  3. Senior Droid
    srothkin's Avatar
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    6448
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    Nov 2009
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    Ossining, NY
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    103
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    HTC Thunderbolt (Verizon)
    #2
    Ground loop -- a ground loop isolator will fix it. I forget where I got mine, but it says PAC Model SNI-1/3.5 on the front of it. Maybe google mp3 player ground loop isolator.
  4. Droid
    Monshroud's Avatar
    Member #
    56823
    Join Date
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    Colorado
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    Motorola Droid Maxx
    #3

    Issue Resolved

    So I was told by one car audio store that the issue was my Car Charger, and I needed to get one with a noise filter. To make a long story short, the person who told me this was quite wrong.

    I went to another Car Audio store and got the right answer. I purchased a new 3.5 audio cable to go from my DROID's headphone jack to the AUX port on my car. This one though has a Ferrite Core which is filtering the engine noise off the line.

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