Amplifier PLOP/POP SOUND

Discussion in 'General Electronics Chat' started by @android, May 24, 2012.

  1. @android

    Thread Starter Member

    Dec 15, 2011
    178
    10
    What causes plop sound in amplifiers? Means turning ON/OFF discharges some noise signal through speakers. What is the root?
    How can we avoid it? Or reduce it?
     
  2. nigelwright7557

    AAC Fanatic!

    May 10, 2008
    527
    74
    It can be casued by the mains being switched. Putting a small capacitor across the switch can help.
    Also the amplifier simply powering up can make a pop until the voltages become stable.
     
  3. #12

    Expert

    Nov 30, 2010
    18,078
    9,617
    Finding the exact answer requires a complete schematic, and then some communication.
     
  4. Audioguru

    Expert

    Dec 20, 2007
    10,506
    1,168
    Half-decent amplifiers use a relay that connects the speaker only when the amplifier is powered-up and is stable.
     
  5. @android

    Thread Starter Member

    Dec 15, 2011
    178
    10
    Yes. But how does switching of mains cause this noise?? I'm still not clear on that.
     
  6. @android

    Thread Starter Member

    Dec 15, 2011
    178
    10
    I don't want to find SOLUTION for a system. I need your knowledge on this topic. I figured solution to reduce it. By simply putting mute mechanism at pre-amp stage. Still don't know how & what causes that discharge in to speakers! :confused:
     
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