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A Public Address or PA system is a combination of audio equipment such as loudspeakers, amplifiers and mixers that allows broadcast or reinforce a sound source over a designated area. It is often seen on school grounds and installed on office buildings. Churches, bars, performance auditoriums and even department stores also use PA systems for various purposes.

PA systems are usually used for announcements, events, and for different entertainment purposes. Public Address systems are also very helpful in communicating during emergencies. In case of earthquake, fire, hurricane and other kinds of natural disasters, PA systems are a valuable tool for authorities to instruct students or employees on how to cope with the given incident.
There is an undying debate whether this combination of audio equipments fall under the term PA system or SR (sound reinforcement) system. Some audio engineers believe that the term sound reinforcement system only refers to audio equipments that are used for live music whereas public address systems are solely used for reproduction of recorded sounds such as speeches and other forms of music.

Types of PA Systems

• Small Systems - consists of a microphone, small and low-powered mixer amplifier and few units of loudspeakers. Small PA systems only provide 50-200 watts of power.
• Large Systems - used to cover big areas like industrial sites, school campus and athletic stadium.

What makes a good PA system provider?
Does your office or school want to have a good working PA system, or you just want to hire a PA system for an event? If you do, then here are some of the guidelines that you should consider when looking for good a PA system provider:

• Provides all your audio equipment necessity; it should be a one-stop PA system provider
• Offers modern and up-to-date audio equipments - This would guarantee you an effective use of PA system.
• Provides free or paid delivery services
• Offers free on-site installation and home repair services within a certain period
• Has strong customer service
• Accepts various modes of payment - cash, check, bank deposit, ATM and credit cards
• Gives warranty to brand-new products
• Offers pre-owned audio equipments for a lesser price
• Accepts trade-ins
• With knowledgeable and skilled crew