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Thread: What is causing this noise from my sub? (Clip included)

  1. #1
    Raw Wave tbird2340's Avatar
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    What is causing this noise from my sub? (Clip included)

    I have a strange noise that comes out of my sub but it's not all the time.. It's also not every day.. I had thought it may be my phone but if that was the case I would think it would be more consistent as I always have my phone with me and it's always syncing..

    Anyone have any ideas what could be causing this?

    http://www.youtube.com/v/Q0apEdRC6-0
    Current Vehicle: 2007 Dodge Nitro

    Second Vehicle: Sold it :( 2005 Dodge Ram 1500 Quad Cab

    First Vehicle: 2003 Ford Ranger

  2. #2
    Variable Bitrate djvillar's Avatar
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    Throw in a different sub and see if it still occurs.

  3. #3
    Raw Wave tbird2340's Avatar
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    Could that be it? I don't have another sub to try...
    Current Vehicle: 2007 Dodge Nitro

    Second Vehicle: Sold it :( 2005 Dodge Ram 1500 Quad Cab

    First Vehicle: 2003 Ford Ranger

  4. #4
    FLAC Machinehead's Avatar
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    It almost sounds like the noise a ported sub makes when the port is sized too small.

  5. #5
    Raw Wave tbird2340's Avatar
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    No I don't think it's anything with the port. It's definately a sound from the sub. Almost like Morris code.
    Current Vehicle: 2007 Dodge Nitro

    Second Vehicle: Sold it :( 2005 Dodge Ram 1500 Quad Cab

    First Vehicle: 2003 Ford Ranger

  6. #6
    FLAC SNOtwistR's Avatar
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    sounds like feedback from microphone. have you muted line in and mic just to see? just my 2 cents SNO

  7. #7
    Mod - all of it.
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    What kind of cross over and amp are you using. It is a higher pitch sound than a cross over should allow to even get to the sub, so it is either on the output of the crossover or the amplifier, or interference in the power supply cabling to either. Do you have another amp you can try with the sub and crossover. If it is still there, then it would be the crossover. If it is not then it would be your amp.
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  8. #8
    Who am I? HiJackZX1's Avatar
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    Quote Originally Posted by SNOtwistR View Post
    sounds like feedback from microphone. have you muted line in and mic just to see? just my 2 cents SNO
    Thats what it sounds like to me too...... Lie the mic is too close to a speaker and causing feedback. Have you checked to see if you mic input is muted or not?
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  9. #9
    Raw Wave
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    FYI - that voltmeter fluctuates a lot, and gets over 14.4V etc.
    What is it monitoring?

    If it's ignition or dash, make sure your ground connections (chassis-engine-battery-) are properly connected and sized - especially if the alternator is sensing battery voltage!

  10. #10
    Maximum Bitrate david69leonard's Avatar
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    Does it make a "pop" when you turn the volume all the way to zero or turn off the HU? It almost sounds like your HD is causing the interference, the frequency is pretty high, do you have the amp set to full, highpass or lowpass, you might be able to eliminate that sound with your amp if you set it to lowpass and adjust the frequency to 50hz or lower

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