How to set the feedback suppressor in professional audio system?

　　The main function of the feedback suppressor in the professional audio system equipment is to prevent the system from generating feedback and protect the speaker equipment. Here are some problems and troubleshooting that need to be paid attention to when adjusting the electronic frequency divider:

　　1. When using microphones to suppress feedback points, it is best to find a few microphones that are often used, and constantly change the position of the microphones during adjustment. You can also put a little background music or speak some words into the microphone during adjustment. This can make the sound field more active, which is more conducive to finding the acoustic feedback frequency accurately and quickly.

　　2. If there is a compressor in the system, pay attention to connecting the compressor directly, and then restore it after adjustment. And other audio processing equipment in the system, such as mixer, equalizer, exciter, frequency divider, effector, etc., should be adjusted to normal working condition.

　　3. Pay attention to detecting the resolution of the feedback suppressor used in the system to the music signal and the microphone feedback signal. The detection method is: turn off all the microphones, connect the feedback suppressor in series with any channel with music signals, and the most It is good to play a disco music, and continuously increase the volume of this channel. If you find that the feedback suppressor starts to work and seriously affects the sound quality, it proves that the feedback suppressor is not perfect.

　　4. One thing that needs special attention: If you have adjusted the feedback suppressor, do not press the Reset button during the live performance, because this will clear all the parameters you have set before, and the feedback suppressor will be reset. It has become the original state of the factory, which is very dangerous. The system is likely to have a strong whistle, and even damage the equipment in severe cases.

　　5. Some feedback suppressors have automatic and manual working modes to choose from. If you think that your adjustment is perfect and the system will not generate acoustic feedback, then you can put the feedback suppressor in manual or locked working mode, so that It not only retains the original parameters in the device, but also does not change the adjusted parameters due to the device's misdetection and mis-start.

　　6. Another point: the feedback suppressor cannot both suppress the acoustic feedback and adjust the sound field. To adjust the sound field, a special analog multi-band room equalizer or professional digital parametric equalizer is required.

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When buying a stage audio amplifier, pay attention to these points so as not to suffer a loss.