The Simplest PA Systems

1. For message announcement only

• The length of line in PA system can be about thousands of meters. Signals are transmitted in the mode of high voltage & low current for reducing damping. So that, PA amplifier's output is rated with 70V/100V/150V/200V/250V. And, speakers are high impedance with 70V/100V/ 150V /200V/250V input terminals for adapting to the line voltage.
• This simplest PA system can just be used for message announcement. To release BGM, news, and recordings, then, CD player, Tuner, Cassette player and other program player should be linked with the PA amplifier. In this case, MIC input has the highest level of priority usually.

2. For message announcement, and, radio & record program transmitting


3. With timing function