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Thread: speaker pop question

  1. #1
    Newbie barometer's Avatar
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    speaker pop question

    Ok i have a epia m10000, carnetix psu not head unit and speakers powered by a 300 watt amp. I get a speaker pop right when windows starts. My amp is already powered up but I get the pop right before it goes to the desktop...any suggestions? Other than that my setup works great the sound is unbelievable.

  2. #2
    FLAC djmickyg's Avatar
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    its cus thre is no siganl to the amp b4 windows starts.. thats when the audio card starts up..

    normaly with car amps.. the head deak will switch on and there is a second delay b4 they amp turns on..

    to prevent this from happening u need to some how delay the starting of ur amp untill windows has started.. maybe u could use a signal from one of the ports..?

  3. #3
    Newbie barometer's Avatar
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    well the amp is already on delay by the power supply it will start up the pc then the amp

  4. #4
    FLAC
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    Barometer,

    What sound card are you using? Is it internal or external? If external, how is it powered?
    MikeH

  5. #5
    Newbie barometer's Avatar
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    i'm using a Creative mp3+ its external and its usb powered

  6. #6
    FLAC
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    Hmmm...sounds like Windows is initializing the sound card and this is causing the pop. Do me a favor, and count the seconds between when you see power applied to your CarPC and when you hear the pop.

    The only other thing I can think of is that your USB port is being powered after Windows starts. Are you using the USB port on the M10000, or are you powering the sound card from some external source?
    MikeH

  7. #7
    Newbie barometer's Avatar
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    ok i'll count the secs and yes I'm using the usb port on the board itself

  8. #8
    Banned eatyummypuppies's Avatar
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    I have the same problem. I've been wondering if setting the BIOS to "Non-plug&play OS" might fix this. That setting allegedly controls whether plug&play devices are initialized by the BIOS or OS. Setting it to "Non-plug&play OS" should force the USB ports to be initialized at boot which may make the pop happen at that time instead of when Windows starts. But, I doubt this will work because the pop probably happens when the sound card is activated, not when the USB port is initialized. It's worth a try though.

  9. #9
    FLAC
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    I've been wondering if setting the BIOS to "Non-plug&play OS" might fix this
    Very good idea and worth a try. I'll try changing this and see what happens in my setup.
    MikeH

  10. #10
    Newbie barometer's Avatar
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    I tried the plug and play bios thing and it doesn't work...i found out it pops when the sound blaster mp3+ is started up by windows...

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