What is a PA System?
A public address or PA system is a combination of a set of audio equipment that allows broadcasts over a designated area. Often found in schools and office buildings, PA systems can be used for announcements or emergency information and provide a simple way to get information out quickly. PA systems can be basic or advanced, and can be adapted to fit a variety of needs. Basic PA systems are comprised of loudspeakers placed in convenient locations around the broadcasting area, an amplifier to increase the sound, and a mixer, which allows variation in sound levels. The user speaks into a microphone, and the sound is transmitted through connected cables to the area surrounding the speakers. Some systems also include microphones or intercoms near the speaker locations, allowing the listener to reply to the central location, although not to the entire system. In school settings, the PA system is often used to broadcast daily announcements about school activities. It is frequently used in Am
A Public Address system is anything that amplifies sound so more people can hear it. The most basic example might be a megaphone, or single microphone and speaker, used to make someone s voice louder. These days most PA systems are used for music too. Prices vary widely, anywhere from several hundred dollars for a little karaoke set up to several thousand dollars for just one of Bruce Springsteen s concert speakers.
