Callidus Design Consulting Engineers

Designers, engineers, consultants and technical specialists covering a wide range of building and process services.

Public Address (PA) Systems

A Public Address system is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers. In many installations a mixing station is added to allow background music to be distributed via the speakers. many large systems are sub divided into zones to allow announcements to be targeted to certain areas of the building only.