How do PA systems work?

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  1. #assist
  2. #which
  3. #systems
  4. #public
  5. #begin
  6. #transmission
  7. #microphones
  8. #microphone
  9. #device
  10. #group
  11. #source
  12. #transmit
  13. #address
  14. #system
  15. #audio
  16. #volume
  17. #condensers
  18. #usually
  19. #communication
  20. #dynamic
  21. #provide
  22. #magnifying