3, current balance problem: normally if shortage of professional audio equipment in the volume, will be timely check the amplifiers and speakers line level Settings are correct, to know more about the second speaker wire connection is strong, and the phase of amplifiers and speakers are consistent, attenuation amplitude equalizer is in the normal range, the control level of pressure is limited to whether appropriate. It is power put sensitivity control switch to open inadequacy, 2 it is the system did not do zero level adjustment. Sometimes the mixer channel is pushed a little bit and the output is too large, which can affect the dynamics and distortion of the system.

4, signal allocation problem: in the sound field inside the case of a few groups of loudspeakers, often use an equalizer will signal allocation to many power put to promote the sound box. But the result that also may be different brand model and sound box are mixed at the same time use together, so allocation signal brings a lot of problems, impedance matches, current allocation is balanced, the power that sound box place obtains is normal, and the frequency characteristic that adjusts good sound field and sound box very hard with an equilibrium.

5. Abnormal pressure limiter: the starting time of the pressure limiter is too fast, slow down the starting time of the pressure limiter a little; Common furnishings have no effect at all and excessive effect is counterproductive. The former can be used, the latter will bring a serious impact on the dynamics of the system, as the voice can not come out, the obvious performance is that the stronger the accompanying voice is naturally weakened so that the singer is at a loss.

6. After the reverberation is added to the microphone, the sound is mixed: the low frequency of the reverberation is too much; Appropriate attenuation of the low frequency of the reverberation on the mixing table;

7, the sound system is always silent fault: professional stage sound equipment system silent fault, first of all, you have to determine that all the equipment has been opened, the volume adjustment to the appropriate position, the channel on the tuning table path switch is all connected, check whether the connection line is correctly connected. If still silent, need to check, can be checked from back to front, also can be checked from front to back. Until you find out the silent, you can judge whether the device has no output or there is a problem with the connection. In case of equipment failure, spare equipment should be replaced for emergency relief. If a peripheral device is faulty, you can skip the faulty peripheral device if there is no spare device.