H9 hum

Home Forums Products Stompboxes H9 hum

  • This topic is empty.
Viewing 10 reply threads
  • Author
    Posts
    • #111663

      My H9 hums when powered.  Is this normal?  It's really loud on power up but there is still a hum coming from inside the pedal.  Its not in my guitar amp chain, it's the pedal itself… just sitting powered on making a slight hum.

    • #126027
      gkellum
      Participant

        No, that's not normal.  You're powering it with the Eventide power supply?  Does it sound like it could be a ground loop?  

      • #126028

        Powered with the eventide supply.  That is the only thing plugged in.  No guitar or amp.  It makes a hum noise like you would expect a tube amp's transformer to make.  It works fine but something internal in the pedal is making the noise.

      • #126029

        Using the supplied eventide wall wart.  That is the only thing plugged in.  No guitar or amp.  Its something internally in the pedal humming.  Like a transformer would hum.

      • #136746
        AAgnello
        Moderator
        Eventide Staff

          Hum is usually a ground loop. If the H9  supply and amp are plugged into different power strips or outlets and the grounds aren't solid you could hear hum.

        • #126030
          AAgnello
          Moderator
          Eventide Staff

            We haven't run into this before. If the pedal itself is humming please send an email to support@eventide.com

          • #136749
            nickrose
            Moderator
            Eventide Staff

              Is the USB plugged in ?

            • #136753

              No, just the power plug, no usb, no 1/4 in plugs to guitar or amp, nothing else plugged in to the power strip.  On power up it's a loud hum followed by a click and then a less noticeable hum.

            • #136756
              nickrose
              Moderator
              Eventide Staff

                I think we all misread your posts, and figured that the hum was heard at the amp, whereas you are saying that the pedal ITSELF is humming.

                This must be a hardware problem, probably in the internal power circuitry, so you should contact support@eventide.com. Sorry.

              • #136854
                doombie22
                Participant

                  i get it sometimes with my usb plugged in

                • #136856
                  nickrose
                  Moderator
                  Eventide Staff

                    doombie22:

                    i get it sometimes with my usb plugged in

                    This will be a different thing, probably a ground loop. Try and make sure that everything connected to your H9 (including your computer and monitor) are plugged into the same power outlet.

                Viewing 10 reply threads
                • You must be logged in to reply to this topic.