100v Public Address Basics
Installing a PA System
Audio Principles & Theory
Miscellaneous
Introduction to 100v Public Address Systems
Here is a simple system used for announcements in many locations:
This typically comprises of a desk paging microphone, a mixer amplifier and a horn loudspeaker. When the press to talk switch is operated on the microphone, an announcement can be made to the loudspeaker via the amplifier.
In a simple one or two speaker system, standard low impedance speakers can be wired back to an amplifier without too much difficulty, providing the cable distances are not very long.