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Thread: 3 months of fiddling around and NOTHING!!HELPP!!!

  1. #81
    FLAC
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    The laptop DC to DC powersupplies are cheapies with nothing to cut out noise issues. I would say its a large possibility that the power cable is the issue. Good luck finding one to replace it though...

    I would still try grounding the laptop battery ground to the chassis of the car. I would also grab a cheap radio shack female 12v adapter and hard wire that to the battery or power flow system. It may be cleaner and provide a ground of less resistance.

  2. #82
    Newbie outdidya's Avatar
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    Quote Originally Posted by Will Albers
    I would still try grounding the laptop battery ground to the chassis of the car. I would also grab a cheap radio shack female 12v adapter and hard wire that to the battery or power flow system. It may be cleaner and provide a ground of less resistance.
    tryed grounding the laptop, helps out a bit but no totally. What 12v adapter from radio shack are you talking about? Doesnt sound like something i tried b4 so tell me more.

    Thanks again

  3. #83
    And then I was mod. Tidder's Avatar
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    He's talking about a cigarette lighter recepticle. You can get them at radioshack. What I did was got a cigarette lighter extension and cut off the end and wired it to my battery. Hope that helps a little more, and it sounds like a good idea.
    Tidder

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  4. #84
    Low Bitrate wonderworm's Avatar
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    Since you have a laptop, you may just have to buy a USB sound card and it may help you. If it doesn't work just take it back to the store.

    If you go back to my post on page 4, I had the same issues. Grounding my PC did not help for me.

    What did help is this:

    I Installed a PCI sound card to bypass my onboard sound.
    Results:
    1. This immediately fixed my buzzing problem that no amount of grounding would eliminate. (The onboard sound sucked arse!)

    2. A. The sound card also had a "no gain amplified" line out as well as a headphone out. My onboard sound only had a headphone out jack which amplified my music signal, exponentially increasing distortion and causing my wave volume level to be at almost zero in order for the sound not to be defeaning.

    B. The PCI sound card with line out sends a cleaner, non-amplified signal and let's my quality amps do the amplifying. The result was no buzzing and a perfectly balanced sound level with no distortion.

  5. #85
    Newbie outdidya's Avatar
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    Quote Originally Posted by wonderworm
    Since you have a laptop, you may just have to buy a USB sound card and it may help you. If it doesn't work just take it back to the store.
    i bought one already, it didnt help but i kept it anywayz cause the sound is much better then it use to be. once the usb is plugged in , it creates a buzzin. its horrible, havent found any solutions yet.

  6. #86
    Low Bitrate wonderworm's Avatar
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    When you use the laptop in the house with headphones. Turn off the volume all the way and see if you can detect the buzzing sound very faintly in one ear. Then, if you can't detect anything, output the headphone jack to your stereo and turn the volume down and see if you can hear any buzzing. Even put your ear next to the speaker to see.

    If you detect no whirring or buzzing, then you can probably eliminate the laptop itself as the source of your noise. Then it's back to the mystery of your car somewhere.

    I would suggest then connecting each component one by one to try to see when you start getting the noise.

  7. #87
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    Ok m8,


    You can check for 2 things.

    1. Check if your USB or VIDEO cable is running close to your audio cables (they are likely to generate noise)

    2. Disconnect them and see if noise still there

    3. Power cable from the battery should be at least 12" away from audio run

    4.Do you still have the noise if you let the laptop run only on battery?

    5. Best to go to local AUDIO store and pay 15 bucks and get a noise filter for your audio line (not power noise filter, just a regular RCA one)

    Let me know if any of this worked

  8. #88
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    Sorry that was 5 things lol (I got carried away)

  9. #89
    Variable Bitrate PaCMaYNE's Avatar
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    holy,, i havent been to this thread and dont feel like reading 2x more posts since mine,, but have you tried grounding your VGA shielding?? that took away over 75 percent of my noise
    throw a moon

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  10. #90
    And then I was mod. Tidder's Avatar
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    Wow, good call Pacmayne, never even thought of that. Strange how the weirdest things effect noise eh?
    Tidder

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