Intercom systems, installed in many buildings, have both speakers throughout a building, and microphones in many rooms so occupants can respond to announcements. PA systems with many speakers are widely used to make announcements in public, institutional and commercial buildings and locations-such as schools, stadiums, and passenger vessels and aircraft. Simple PA systems are often used in small venues such as school auditoriums, churches, and small bars. A PA system may include multiple microphones or other sound sources, a mixing console to combine and modify multiple sources, and multiple amplifiers and loudspeakers for louder volume or wider distribution. Typical applications include sports stadiums, public transportation vehicles and facilities, and live or recorded music venues and events. be sufficiently audible at a distance or over a large area. PA systems are used in any public venue that requires that an announcer, performer, etc. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music. Howard using a public address system to address the crew of USS Wasp (LHD-1) in 2009Ī public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. Navy Rear Admiral (lower half) Michelle J.

Connect microphone to speakers