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high pitch

Forum discussion tagged with high pitch.
  1. A

    High pitched hum from speakers

    Hey guys, I'm having a wierd issue with my speakers (Klipsch Promedia 2.1). They begin to emit a high pitched hum after they've been on for sometime. Its a really annoying like nails on a chalkboard. It is not like static. Heres a couple of things I tried 1) Change power socket - did not work...