Commissioning method of professional stage sound system: 

The input channel parameter balance lifting and decay amount of the professional stage sound system mixer is in the 0dB state, and both the input pusher and the master control pusher are in the lower position. 

(1) Pressure controller: noise door valve is closed, input gain 0dB, compression valve is in 0dB, compression ratio 2:1, start time 10ms, reply time 500ms, output gain 0dB. 

(2) (Room) equalizer: the output gain is 0dB, each scale frequency point is on 0dB, and the decay range is ±12dB, the low cut key pops up. 

(3) Delyser: it is in the direct-through state. 

(4) Feedback suppressor: in bypass state, the cutting level at 2 position.

(5) Incenator: the excitation level button is up, the tuning knob is at 12 points, the mixing ratio is rotated to a lower position, and the bass compensation is off. 

(6) Electronic frequency divider: a large number of each frequency band is placed at 9 points, the low-end intersection frequency is placed at 800Hz, the high-quality intersection frequency is placed on 2kHz, and the input level is adjusted at 0dB. 

(7) Power amplifier: put the left and right sound channel input level adjustment on 2 / 3 of the full scale, so that the power amplifier has a reserve. 

(8) Effects machine: placed in the bypass state. 

Start the system, first power the mixer, then the surrounding power, and finally the power amplifier (power amplifier).Platform input channel push to 2 / 3, input channel gain to 4 / 5, the master control push to listen to 0dB, listen to the sound system static noise, if the total static noise is larger, open the pressure device noise door, until the noise can be heard, pull down the master push, input sound signal, the left and right channel master control push again, play sound. 

"Listen to the good voice and gather positive energy!"Guangdong Wanchang Technology Industrial Co., Ltd. is a collection of product research and development, production, sales, engineering projects in one of the modern audio enterprise, its jazz dragon sound for 14 consecutive years won the top ten professional sound expansion system (national) brand title.Adhering to 18 years of industry experience to provide users with quality products and intimate service, the company was awarded the high-tech enterprise unit and municipal technology research and development center certificate by Guangdong Provincial Department of Science and Technology.Market-oriented and project-centered, the company's product business involves professional sound, lighting and stage design, educational equipment, intelligent broadcasting, square dance sound, home theater and other fields.