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PA Systems

PA System Image A public address or “PA” system is an electronic amplification system with a mixer, amplifier and loudspeaker, used to reinforce a given sound, e.g., a person making a speech, prerecorded music or message, and distributing that sound to the general public around a building.

Simple PA systems are often used in small venues such as schools, auditoriums, churches, and small bars. PA systems with larger numbers of speakers are widely used in institutional and commercial buildings to read announcements or declare states of emergency. Intercom systems, which are often used in schools, also have microphones in each room so that the occupants can reply to a central office.

There is disagreement over whether to call these audio systems “Sound Reinforcement” systems or “PA” systems. Some audio engineers distinguish between the two by technology and capability, while others may go by intended use.


The VoiceArrest™ Sound Masking System is measurably the most effective sound masking system available. This new advanced technology provides several benefits for almost any workplace. It helps to reduce distractions and protect confidential conversations in virtually any workplace environment. It combines the latest innovations in speaker technology with a highly-targeted frequency spectrum to provide the most effective sound masking technology to date. Contact us to find out what the VoiceArrest Sound Masking System can do for your facility!

Here are a few questions to consider during planning: