Ground loop issue

Discussion in 'DJ's, MC's & Turntablism' started by leodido, Jul 20, 2010.

  1. leodido

    leodido New Member

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    I have a ground loop issue with my setup, everything works fine but I decided I wanted to record a set, so I took my GF laptop and plugged it on my mixer output through her mic input (she does not have anything else) and then as soon as I made this connection I started having a nice hum in my speakers.

    A friend of mine told me I should physically cut the ground of the laptop and that it would solve the problem, which is probably true but with my limited electricity knowledge I'm not sure that this is the best thing to do security wise.

    How would you fix this problem correctly?
     
  2. cbfb

    cbfb New Member

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    Maybe try a DI box if you have one handy?

    Not sure cutting your laptop's ground is such a great idea...
     
  3. leodido

    leodido New Member

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    Ok thank you I'll look into a DI box, it looks quite expensive tho
     
  4. cbfb

    cbfb New Member

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    Hey, I was assuming you meant the speakers on the laptop are humming, do you mean the monitors your mixer is connected to instead?

    Have you tried removing the power supply (for the laptop) so it's just running on battery?
     
  5. leodido

    leodido New Member

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    Yeah, no it's not the laptop speaker, it's my monitors that are humming :( and no I did not try with the battery but just to give it a shot, I taped the ground of my laptop and the humming went away... I'm not sure if this is a viable option
     
  6. Gloxxy

    Gloxxy I SNORT COAL

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    All you have to do is unplug the power supply from the laptop and it will instantly stop. The reason you get hum when you plug the power lead into your laptop is because the power transformer is located so close to the audio chip on the laptop's motheboard.

    Just make sure the battery is fully charged before you start recording your mix.
     
  7. RUSSLA

    RUSSLA DNBF Monarch

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    ^^ Exactly what i was guna say. this has been brought up before - Search first people!
     
  8. cbfb

    cbfb New Member

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    Not a good plan, it's there for a reason!