H90 squeal when usb plugged in

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  • This topic has 2 replies, 2 voices, and was last updated 1 month, 1 week ago by joecozzi
    Eventide Staff
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    • #167881
      Lorpal
      Participant

      As soon as I plug in the usb to my Mac and h90 control – huge squeal noise comes through to the amp. Anyone else seeing this? Ground loop?

    • #167891
      Lorpal
      Participant

      ok – did some trouble shooting.

      no squeal when its just my laptop plugged in.

      Squeal if my laptop is also plugged into my hub which allows me to connect to many other things – including my 32″ screen and charges my computer…

      No squeal if I plug the usb into the hub instead of directly to my laptop. So maybe a weird charging/ground loop squeal (sounds a lot like when you use non isolated power supplies and mix analogue and digital stomp boxes on them -like daisy chaining)

    • #167892
      joecozzi
      Moderator
      Eventide Staff

      You guessed it. Ground loops are definitely a challenge in most studios. Experimentation is the only way to find out the problem areas. Thanks for reporting back.

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