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1. Signal distribution problem: In the case of several sets of speakers in the sound field, a balancer is often used to distribute signals to multiple amplifier propulsion speakers. But at the same time, it may be that the power amplifiers and speakers of different brands are mixed together, so that the signal distribution brings many problems, whether the impedance can be matched, whether the level distribution can be balanced, whether the power obtained by the speaker can be normal, and the balance is very good. It is difficult to adjust the frequency characteristics of the sound field and the speaker.

2. The frequency point adjustment problem of the illustrated balancer: There are three spectral waveforms of swallow type, mountain type and wave type. The above waveforms are all imagined by the tuner. In fact, they are not the waveforms required by the sound field practice. We know that the ideal sound field frequency characteristic curve should be relatively flat. If we artificially adjust the sound field frequency characteristic curve by imagination, the incredible result is counterproductive.

3. Pressure limiter adjustment problem: It is common to do the display basically does not work and the effect is excessively counterproductive. The former can make use of it, the latter will bring about a serious impact on the dynamics of the system, as the sound can not be emitted, the obvious performance is that the stronger the accompaniment sound, the natural weakening makes the singer feel at a loss.

4. System level problem: First, the power amplifier flexibility control switch is lacking, and the system does not make zero level adjustment. Sometimes the mixer channel pushes a little bit of output, which can affect the dynamics and distortion of the system.

5. Bass signal disposal: The first type does not do the electronic frequency division with the full frequency signal directly to the power amplifier to promote the speaker; the second does not know where to extract the bass signal from the system for disposal. Assume that the full-frequency signal is not used for the electronic crossover. The speaker is sounded and the speaker does not burn out the unit, but the low-frequency sound is incredible. However, if the signal is obtained from an inappropriate position in the system, it will be given. On-site control brings unnecessary trouble.

6. Effect loop disposal: The post signal of the fader should be taken to prevent the uncontrollable effect from causing the microphone to whistle, returning to conditionally occupy one channel, so that debugging is more convenient.

7. Line connection process: The common system communication interference sound is that the line connection process is not formed well, and there are certain imbalances in the system and unbalanced conversion and equalization must be connected according to the specifications. Also don't use inferior connectors.

8. Control problem: The mixer is the control center of the system. Sometimes the high, medium and low EQ balance on the mixer is equally enhanced or attenuated to clarify that the system is not adjusted. The system needs to be re-commissioned. Taiwan's EQ.