EMI and getting rid of it

Discussion in 'Microphones (live or studio)' started by bubacka, Sep 20, 2004.

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  1. bubacka

    bubacka Guest

    I have a problem with EMI in my studio, it seems that it gets in the recorded audio signal, although I use very quality cables in my studio which are mogami finest cables, I still cant get rid of it, and I have noticed that whenever I turn off my computer screens the interference is gone.
    Maybe it is grom my graphics but I dont think so.
    Any sugesstions???
    Thank You.
  2. jonyoung

    jonyoung Well-Known Member

    Dec 31, 2003
    Are you using a dedicated circuit for your audio gear?. Make sure your gear is all on one circuit, including the comuter. It's not that unusal that outlets within one room are on different breakers at the main panel. The circuit you're on now probably shares grounding with other service, ie; lighting. Are there any dimmers in the house? They're a common source of noise. A power conditioner (like a Furman) will help.
  3. heyman

    heyman Guest

    Another thing to look into is Isolated ground connections....

    They shield you from just about anything.
  4. dustbro

    dustbro Guest

    This means that your monitors are not shielded. Most monitors were not ment to be placed right next to a computer screen. You'll either have to move your screen away from your monitors, or purchased "shielded" monitors. Most companies shield their monitors for this exact reason. what kind are you using right now?
  5. RecorderMan

    RecorderMan Distinguished Member

    Mar 28, 2001
    ...or get a flat-screen (non CRT) monitor.
  6. LittleDogAudio

    LittleDogAudio Active Member

    Sep 24, 2004
    Yep, get a Flat screen.

    If you sit in front of a CRT with a Stratocaster you will certainly know what a CRT can do to the noise-floor.

    Also, CRT's can effect any part of a circuit that is unshielded. Even if you have one little piece of a connection not protected, you're going to get EMI.

    EMI is very tricky stuff to contend with. I keep around a few sheets of copper shielding and Mu-Metal and have used both to tape over single coil pick-ups to physically shield them.

    Good luck and buy a flat-screen.


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