how pa systems work
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 address a large public, for example for announcements of movements at large and noisy air and rail terminals or at a sports stadium.
Simple PA systems are often used in small venues such as school auditoriums, churches, and small bars. PA systems with many speakers are widely used to make announcements in public, institutional and commercial buildings and locations. Intercom systems, installed in many buildings, have microphones in many rooms allowing the occupants to respond to announcements.
Grainger carries PA system speakers that use an electro-acoustic transducer to produce sound in response to an electrical audio signal input. Shop here for wireless speaker systems, UHF and VHF radio receiver systems that connect to existing wired PA speaker systems, a magnetic-mount UHF/VHF antenna and more. For high-quality sound production for your public address system, check out the PA system speakers at Grainger.