PC mobo speaker - speaker or buzzer?

Discussion in 'General Electronics Chat' started by majhi, Mar 4, 2015.

  1. majhi

    Thread Starter Member

    Jul 2, 2014
    49
    1
    Should be a fairly straightforward question. Is the mobo speaker (the one that beeps for POST codes) an actual speaker or just a simple buzzer? The reason I ask is that I have a device that has an output for an 8-ohm speaker. I need a speaker to play .wav files, not just a buzzer.
     
  2. #12

    Expert

    Nov 30, 2010
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    The beepers I have seen were all piezos (not speakers).
     
  3. BobTPH

    Active Member

    Jun 5, 2013
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    114
    I don't know about newer ones, but in the old days, they used to be speakers. I actually wrote some code that did PWM to it to produce some piss-poor audio. You could get understandable speech out of it though. This was in the days before PCs had any better audio capabilities.

    Bob
     
  4. #12

    Expert

    Nov 30, 2010
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    I just remembered...I have 32 boxes of salvaged computer parts and there is (1) one 2 inch speaker in there. Maybe the word, "piss-poor" jogged my memory. :D
     
  5. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Usually the ones on board are a simple buzzer, but most PC's now have a built in rear phono out jack alongside the mic socket instead.
    The older ones had a plug for a simple speaker to be attached to.
    Max.
     
  6. #12

    Expert

    Nov 30, 2010
    16,284
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    I think you misspelled, "phone".
     
  7. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Well technically on the MB it is described as 'Line in' 'Line out'.:confused:
    The RCA sockets usually state Phono for audio.
    Max.
     
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