1. In the professional audio system, pay attention to the order of power on and power off. When the power is turned on, the power amplifier shall be turned on after the pre equipment such as sound source; when the power is turned off, the power amplifier shall be turned off before the pre equipment such as sound source. If there is a volume knob on the audio equipment, it is better to turn the volume knob to the minimum before starting and shutting down. The purpose of this is to reduce the impact on the speaker when starting and shutting down.
2. It is forbidden to unplug or plug in the signal plug with electricity. In order to avoid damage to the machine or speaker due to the impact.
3. When it is necessary to use professional audio equipment, first turn on the machine correctly according to the requirements, and then play music, and observe whether the indicator light of power amplifier is working normally. After playing for a period of time, touch the amplifier with your hand to see if it is overheated.
4. In case of any abnormal sound during the operation of the sound reinforcement equipment, the power supply shall be cut off immediately and the equipment shall be stopped. And please have experienced qualified maintenance personnel for maintenance. Do not open the machine without permission, so as to avoid greater damage to the machine or electric shock accidents.