The purpose of paging systems is to deliver audio announcements with clarity and at proper levels to people working within the organizations making them easily understood. There are two common ways to accomplish this. They are either to us a 70V centralized amplifier system with passive speakers or a system which utilizes 24V self amplified speakers with external 24V dc power supplies.
Centralized amplifiers offer features that enhance voice and music reproduction and can simplify system expansion. These low current systems allow longer runs of cable and can power a large number of speakers.
One Source Technologies designs paging systems for customers that are easy to use and allow for on the fly adjustment of speaker paging levels.