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Public Address System Prank

  1. Sep 26, 2016 #1
    I know relatively little about electricity so this might sound kind of elementary. Say you have a public address system installed in a building, and someone is trying to do a prank that involves playing audio over the loudspeakers. Each loudspeaker has a signal (positive) wire and a ground (negative) wire. If you disconnected one of the speakers and attached the stripped ends of the two wires to the plug of an aux cord connected to a phone or other device, would you be able to use the device to play audio over the whole PA system? From what I understand, a PA system usually has to have an amplifier on the input end to boost the signal from the input; if you were to use just a phone/iPod on a large system, would the signal not be strong enough? I guess what I'm asking is whether you could hypothetically use one of the outputs of an audio system as an input.
     
  2. jcsd
  3. Sep 26, 2016 #2

    berkeman

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    Thread closed temporarily for Moderation...
     
  4. Sep 26, 2016 #3

    berkeman

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    Thread will remain closed for now.

    Why don't you just ask your science teacher about this at your high school? :wink:
     
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