What is Public Address System (PA System)?
A public address system (PA system) is an electronic system that includes a microphone, amplifier, speakers, and related equipment.
The perceived volume of vocals, musical instruments, other sound sources, or recorded sounds or music is increased with this public address system. The sound amplification system can be utilised in public areas where performers, announcers, etc. need to be heard in a far-off or big region. Sports fields, public transportation and infrastructure, live or recorded music venues, and events are examples of typical applications. Multiple microphones or other sources, a mixer to combine and switch between sources, and numerous amplifiers and speakers for increased loudness or wider distribution are all possible components of a PA system.
Simple public address systems are frequently utilised in little spaces such little bars, churches, and classrooms. Presentations in public, institutional, and commercial structures and locations, such as schools, stadiums, cruise ships, and aeroplanes, frequently use acoustic reinforcement systems with numerous speakers. There are microphones in many rooms and intercom systems installed in many buildings, allowing occupants to respond to notifications. Emergency communications systems frequently employ public speaker and intercom systems.
The 67 series, 77 series, and 78 series of ITC IP PA intercom are available. One of three series, the 67 series is the earliest IP product from ITC and is also the least expensive. The most affordable of the three is the 77 series. One of the three most expensive and high-end series is the 78 series, but it has the most features.
| Item | 67 Series | 77 Series | 78 Series |
| Operating System | Windows | Windows | Linux |
| System Architecture | C/S Architecture |
C/S Architecture B/S Architecture(New) |
B/S Architecture |
| Software Control |
Need Software, Nonsupport Web Control |
Both support software and web control |
web control |