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Thread: DDJ-RB freezing

  1. #11
    MDD Supporter Nakatomi's Avatar
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    It's possible that ground based noise is causing problems with USB. What this means is your controller might be earthed via usb through your laptop & then it's connected to your pa & grounded through the amp/speakers. If there's a ground loop you can end up with noise (which you might not even be able to hear) that's mucking up usb communications sometimes.

    Try running the laptop on battery & see if it stops the problem. If it does, maybe using a usb isolator will help. Mind then, so might disconnecting the ground wires in the xlrs at the speaker/amp end. Nb this is safe to do & IS NOT akin to disconnecting the mains earth from your laptop, controller or PA!

  2. #12
    Dinosaur Excalibur's Avatar
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    Quote Originally Posted by Nakatomi View Post

    Try running the laptop on battery & see if it stops the problem. If it does, maybe using a usb isolator will help. Mind then, so might disconnecting the ground wires in the xlrs at the speaker/amp end. Nb this is safe to do & IS NOT akin to disconnecting the mains earth from your laptop, controller or PA!
    Justin, would that be like using the ground lift switch fitted on many amps/ active speakers?
    I've known occasions where using that has cleared nasty noises for me.
    Excalibur. Older than the average DJ.

    www.excaliburmobiledisco.co.uk


  3. #13
    MDD Supporter Nakatomi's Avatar
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    Quote Originally Posted by Excalibur View Post
    Justin, would that be like using the ground lift switch fitted on many amps/ active speakers?
    I've known occasions where using that has cleared nasty noises for me.
    Yep it'll do the same thing. I think my speakers have them too. Not that I've ever had cause to use them.

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