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Background noise issue with PC speakers

Shogunzen1983 -  
georges97 Posted messages 14640 Registration date   Status Contributor Last intervention   -

Hello,

I have a 2.1 FOCAL XS PC speaker set and I've been experiencing some unwanted noise, a sort of buzzing sound, when I'm not listening to music. There is a persistent background noise and I would like to know what the causes might be?

Thank you very much,

Shog


4 answers

  2.
    georges97 Posted messages 14640 Registration date   Status Contributor Last intervention   2 952
     

    Hello,

    A buzzing sound (different from background noise, hiss affecting any sound amplifier) can have:

    - either an internal cause in the amplifier (malfunction of the power supply due to a failure of a filtering capacitor for example)

    - or external causes (proximity of a refrigerator, starter circuits for lighting, proximity of inadequately protected power supply from another device).

    This type of buzzing is called hum by electronics experts and indicates an unwanted passage of the 50 hertz mains signal onto the audio circuits.

    In the first case, only a service by authorized technical departments can resolve the issue.

    Suggestions:

    - compare USB and cinch/RCA connections

    - check that the phenomenon occurs with multiple sources (turntable-tuner, etc.).

    - identify a device emitting interference.

    - change the location of the setup.

    - place ferrites on the cinch/RCA connection cords.

    https://enceintesetmusiques.com/forum/fer-it-or-not-1915

    https://couleur-science.eu/?d=6489ce--quoi-servent-les-ferrites-sur-les-cables-dordinateur

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    1. Shogunzen1983
       

      Hello,

      The speakers are unfortunately no longer under warranty.

      Thank you all for your explanatory and helpful messages.

      I will try doing some tests, otherwise it will be an opportunity to get some new ones :)

      Have a great weekend everyone!

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      1. Castor Posted messages 17881 Registration date   Status Moderator Last intervention   170 > Shogunzen1983
         

        If the problem is an issue of electromagnetic interference, changing your speakers probably won't solve your humming issue.

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      2. georges97 Posted messages 14640 Registration date   Status Contributor Last intervention   2 952 > Castor Posted messages 17881 Registration date   Status Moderator Last intervention  
         

        Good evening,

        Completely agree. This is not what was suggested, let alone the replacement of the speakers.

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  3. Castor Posted messages 17881 Registration date   Status Moderator Last intervention   170
     

    Just so you know, I have exactly the same problem since I changed my screen.
    The panel is closer to the speakers, and depending on what is displayed, I get a more or less pronounced buzzing (it clearly depends on the display and therefore the LED scanning of the panel).

    The problem is clearly a shielding issue given the quality of my monitoring speakers.

    Follow Georges's advice and also try slightly moving your speakers (sometimes just a few centimeters make all the difference).

    .Ô      Beaver
    (_)___ Rodent

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  4. TimSteve Posted messages 6 Status Member 2
     

    Electronic devices or nearby cables can cause electromagnetic interference (EMI) that affects the audio signal. Try to keep your speakers away from other devices such as routers, mobile phones, or wireless devices to see if the buzzing decreases. Poorly shielded or damaged cables, loose connections, or faulty connectors can introduce noise into the audio signal. Check all cables connecting your speakers to the computer or audio source and ensure they are properly connected. You might also try replacing the cables to see if the crackling noise disappears. If that doesn't help, there may be a problem with the speakers themselves, such as a faulty component like a speaker cone or a damaged amplifier.

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