Microphone Phase Verification Microphones used at the same time in an audio system should usually be in the same phase. Before the project is delivered, the phase of all microphones in the system should be corrected to be in phase. When individual microphones need reverse connection due to special needs, you can use the reverse switch on the console or insert a "reverse line". The method of testing microphone phase is very simple. If the two microphones are in phase, the volume will increase obviously when pointing to the same sound source. If the two microphones are in opposite phases, the volume will decrease when they are used at the same time. In the process of adjustment, you can choose any microphone as a benchmark, and use it to compare all microphones in the system. The ones with the same phase belong to one category, and those with different phases belong to another category. Phase adjustment can be achieved by adjusting several types of microphones, that is, inserting 2-pin and 3-pin connections and exchanging them.

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The room equalizer can be accurately adjusted by pink noise generator and real-time spectrometer. The room equalizer is mainly used to correct and compensate the room frequency characteristics.