SRE#7 + INFO - Apakah Itu PA System

WHAT IS A PA SYSTEM??

A public address system or PA system is a combination of a set of audio equipment that allows broadcasts over a designated area. Often found in schools, shopping complex and office buildings, PA systems can be used for announcements or emergency information and provide a simple way to get information out quickly. PA systems can be basic or advanced, and can be adapted to fit a variety of need

Basic PA systems are comprised of loudspeakers placed in convenient locations around the broadcasting area, an amplifier to increase the sound, and a mixer, which allows variation in sound levels. The user speaks into a microphone, and the sound is transmitted through connected cables to the area surrounding the speakers. Some systems also include microphones or intercoms near the speaker locations, allowing the listener to reply to the central location, although not to the entire system.

PA SYSTEM LAYOUT

COMPLETE BASIC PA SYSTEM

Large-scale PA systems are used to amplify sound for concerts or theater productions. Often called sound reinforcement or SR systems, these versions are much more complex than the simple ones found in schools and offices. SR systems frequently use a dual broadcast system, projecting the sound from the stage into the audience, and also into backstage monitors that keep any off-stage personel informed of what is happening on stage. These systems may have dozens of microphones feeding into them, and may need several technicians to operate correctly.

A simple and portable PA system is still far from inexpensive, typically beginning at around RM1500 - RM3000. This type of public announcement system will provide you with extremely limited broadcasting range, often only a single speaker. More advanced versions increase in price considerably, with RM5000 - RM15000 easily within the normal range for a basic system, especially when considering the necessary cords and adaptors. Clearly, purchasing a PA system is a serious investment, and you should consider doing a lot of comparison shopping before deciding what to purchase.