sound problem

Discussion in 'Lasershow Designer BEYOND' started by blackterror, Jul 24, 2014.

  1. blackterror

    blackterror Member

    big hum in speaker as soon I plug in the fb3 in the computer
  2. Aaron@Pangolin

    Aaron@Pangolin Staff Member

    Can you advise if the FB3 is connected to a laser projector or is it just by itself?
  3. dennisthemenace

    dennisthemenace Well-Known Member

    i had the same when i checked my projectors today, turned out to be a grounding problem inside one of the projectors.

    Open up your projector and see if the ground has a good connection to the laser box.

    Mine is solved now :)
  4. Pangolin

    Pangolin Staff Member

    Yes, for sure this has nothing to do with our software or hardware.

    When using sound with the computer, you should be using something called a "DI box".

    The most valuable feature that the DI box provides is isolation. That eliminates ground problems mentioned by Dennis.