1. In the professional sound system, pay attention to the order of startup and shutdown. When starting, turn on the front equipment such as sound source and then the power amplifier. When ending, close the power amplifier and then the front equipment such as sound source. If the sound equipment has a volume rotation, it is best to turn the volume rotation button to the minimum before boot and shutdown.The purpose of doing this is to reduce the impact on the sound box when the boot and shutdown. 

   
   

     2. Do not pull and plug the signal. Avoid damage to the machine or speaker box from the resulting impact.

     3. When you need to use professional sound equipment, first turn on the machine correctly according to the requirements. After opening, play music and observe whether the power amplifier tone his indicator light is working normally. After playing for a period of time, touch whether the power amplifier is overheating. 

    4. If an abnormal sound is emitted during the operation of the sound expansion equipment, turn off the power supply immediately and stop the use. And ask the experienced qualified maintenance personnel to repair.Do not turn on the machine without authorization, so as not to make the machine suffer more damage or cause electric shock accident. 

Guangdong Wanchang Technology Industrial Co., Ltd. has 18 years of industry experience and perfect service system, from product consulting, engineering design, guidance and debugging, user training, maintenance, system upgrade and other links to form a professional service mode.Its own brand jsl Jazz Dragon Sound has won the top ten professional sound expansion system (national) brands for 14 consecutive years. In the future, it will continue to focus on quality and innovation, inherit and carry forward the brand concept of "listen to a good voice, gather positive energy", and strive to create infinite space in the sound world.