PUBLIC ADDRESS SYSTEM AND PUBLIC ADDRESS OPERATING METHOD

摘要

According to the present invention, a public address system comprises: a sound source input unit to which a sound source is input; a sound source amplification unit including one or more power amplifiers to amplify the sound source input to the sound source input unit; a sound source output unit including one or more speakers for transmitting the sound source corresponding to a plurality of channels individually assigned to the power amplifier; a main control unit including a control module for setting a maximum allowable output amount per channel allocated to the power amplifier; and a broadcast line control unit including a broadcast short circuit protection module which is controlled by the control module and blocks a circuit of the corresponding channel when a real-time output amount of an arbitrary channel exceeds the maximum allowable output amount set by the control module.;COPYRIGHT KIPO 2020