Question Testing a PA horn

Discussion in 'General Tech & Gadget Forums' started by weldaar, Apr 28, 2016.

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  1. weldaar

    weldaar
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    I have an old set of PA cabinets (Yamaha S4115H) in my studio. The horns stopped working after a loud squeal. Not sure what caused it, but either way I would like to find out why? The speakers are working fine, but no horns on either cabinet. Is it possible to blow both coils (and or diaphragms) at the same time? Not even sure if they have diaphragms. How do I go about checking this? Not very well experienced with this. I do have a meter if that helps. Thank you all in advance for your help with this.

    Jeff
     
  2. rousetafarian

    rousetafarian
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    Welcome to AV Forums!
     
  3. weldaar

    weldaar
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    I just found out how to test the coils. I check across them with my Multi Meter and they are indeed bad. I got an OL reading. I will get new ones, but I would like to ask about installing circuit breakers to avoid this problem in the future. Any recommendations?
     
  4. Bbos37

    Bbos37
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    From what I know there's no such beaker available for speakers.Protection has to be done from the power amp side.
     
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    Joe Fernand
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