4.PEAK: Peak peak indicator lights to alert the user input signal within the channel too strong. Peak lights when found, and let this situation continues, the mixer, the mixer will start self-protection, cut off audio output. Therefore, technical debugging mixer, you should adjust the input volume, otherwise, the type and function of the mixer, the mixer of the audio output will be automatically cut off. Control can be used include: Line -20 DB, reduce Gain, low attenuator, generally to reduce Gain appropriate. 3.LINE -20DB: attenuation of 20 db can press this button to input level attenuation 20 db. Generally noisy environment, both digital and analog mixer, noisy equipment level or the level too high when using this button. All frequencies using this key will attenuate the audio input signal, in order to achieve the smaller volume of noise or electrical noise filtered out purposes. Sometimes the input signal level is too high the phenomenon, as without attenuation, the attenuator control will be greatly reduced, only to slide within a small area, causing the volume output control is difficult to operate. At this point you should press this button to increase the effective control attenuator. Mixer, Wuhan Jiuhua video, audio mixer of the system core is provided by Wuhan Engineering Co., Ltd. Jiuhua video. Mixer, Wuhan Jiuhua video, audio mixer of the core of the system is the video Jiuhua Wuhan Engineering Co., Ltd. (www.jowa-tech.com) this year introduced a new upgrade, the above picture is for reference only, please dial this page Phone or pictures on obtain the latest information, contact: Mr. Lu.