DynAudio DBM50 Monitor Speaker - loud hissing noise

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  • dicky96
    Sun Seeker
    • Mar 2017
    • 1825
    • Spain
    #1

    DynAudio DBM50 Monitor Speaker - loud hissing noise

    Hi guys
    I have a DynAudio DBM50 here - it makes a loud hissing noise.

    It sounds just like an FM radio with no antenna (or tuned off-station). The volume of the hissing fades up and down, sometimes drops to almost nothing then comes back loud. It occasionally makes a loud bump noise too.

    It does this even with nothing connected to the audio input XLR

    Any suggestions?
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    • madan1
      Badcaps Veteran
      • Nov 2016
      • 726
      • Bulgaria
      #2
      Re: DynAudio DBM50 Monitor Speaker - loud hissing noise

      If it is not constant, I would put my money on bad solder joints and/or connectors.
      Other thing could be failing capacitors.. they tend to change parameters with temperature change.

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