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Public Address System

A public address system (PA system) is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to speak to a large public, for example for announcements of movements at large and noisy air and rail terminals or at a sports stadium or amplify other audio content, such as recorded music or the live sound of a band.

Public Address System

The term is also used for systems which may additionally have a mixing console, and amplifiers and loudspeakers suitable for music as well as speech, used to reinforce a sound source, such as recorded music or a person giving a speech or distributing the sound throughout a venue, building or area. Simple PA systems are often used in small venues such as school auditoriums, churches, and small bars.

Devices of PA Systems

Amplifiers

Amplifiers

Mixers

Mixers

Microphones

Microphones

Speakers

Speakers

Counter communication systems

Counter communication systems