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Getting feedback from too much power?

Discussion in 'Recording' started by elementary, Jun 3, 2007.

  1. elementary

    elementary Guest

    I was wondering if anyone can help me with a problem I've been having for a few weeks now.
    I am a DJ and frequently record sets using my laptop. Recently, I've purchased monitors which I didn't used to have. Upon hooking the monitors up to my mixer and then the mixer to the laptop for recording, I then get a static sound through the monitors, and it can be heard/seen in the recording.
    I experience this problem when my laptop is plugged in, however not when I use the battery for power, so it seems as if with everything connected I'm getting a surge of power somewhere that's causing the feedback. I've tried taking my laptop to other places with similar setups and experience the same problem. I've tried using a surge protector, chaning out power supplies, different mixers and monitors, always having the same problem, so I'm assuming it's something to do with the laptop.
    Does anyone know of a possible cure for this issue so I can record again, especially when I'm recording at gigs, this would be a great help.
    Any help would be greatly appreciated.
  2. sheet

    sheet Well-Known Member

    Two things.

    1. Feedback is not static sounding.
    2. A Surge could/would fry your computer and gear, and is not capable of causing feedback.

    You are doing something wrong somewhere.
  3. elementary

    elementary Guest

    The surge protector I've used is also a regulator... And I've taken my laptop to other's equipment and tested it with the same problem, as well, have brought their laptop to my setup with no static using their laptop.
    I'm sure it's not the way it's hooked up since I haven't had problems before getting monitors and this problem persist on other people's setups... Also, it doesn't happen if I am using the battery for power... only when I'm using my plug-in power supply.
  4. sheet

    sheet Well-Known Member

    What conditioner do you have?
  5. rockstardave

    rockstardave Active Member

    what kind of mixer? how's it hooked up?

    give us some detail on your setup if you can
  6. Boswell

    Boswell Moderator Distinguished Member

    I would be surprised if it's any of these things. I think your laptop has a poorly designed power supply with insufficient grounding. Try powering it from a good d.c. source (17V?) that is properly grounded and see whether you still get the problem.
  7. Doomith

    Doomith Guest

    Agreed, sounds like a grounding issue in your power supply!

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