Phase adjustment of the field sound expansion system of professional stage sound:

If the combination of ultra-low frequency and full frequency is used simultaneously, due to the existence of the frequency division system and the installation position, there may be phase problems caused by cross-frequency interference or different delay time, so the phase adjustment is needed. The pink noise generator receives the input channel of the mixer, adjusts the level to the normal position, and the phasing test microphone is placed in the middle of the field and placed in an equilateral triangle with the speaker. Push the mixer output pusher, and check whether the spectrometer screen appears in the spectrum band near the frequency of full and ultra-low frequency speakers. If any, raise the equalizer corresponding frequency band, if it cannot be raised, there is a phase problem. Phase problems can directly affect the sound quality, and with the equalizer. To solve the phase problem, you need to adjust the phase angle of the frequency divider or the delay time between the speakers. Adjust, pay attention to see the spectrometer display, first adjust the phase Angle of low frequency division, see if there is any improvement, if you improve, determine the best value to adjust the delay time, delay time adjustment depends on the scene, if low frequency speakers near seat, you need to bass delay adjustment, also see the spectrometer screen, adjust the delay time to make the curve as flat as possible. Minimize the phase interference.

As for the frequency equilibrium, after completing the above adjustment, the next step is to adjust the frequency response curve of the system. Put the test microphone of the spectrometer somewhere in the seat area, play the pink noise source, watch the spectrometer display, and correct the defects with the equalizer. Put the test microphone in different places, change several more positions, and repeatedly adjust the balance to make the frequency sound curve of each area as straight as possible. 

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 upgrading and other links to form a professional service mode. Its independent 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 the good voice, gather positive energy", and strive to create infinite space in the sound world.