When located at the lower end of the fader (or the volume knob at the far left), the functional effect effect mixer, signal attenuation is infinite. Then, with the mixer on stage, the channel does not signal output. -∞ ~ +6 DB adjustment range, generally pushed to the 0 appropriate, over 0 will sound a certain degree of distortion. If we want to raise the level signals conference hall of the mixer, the general approach appropriate increase Gain, attenuator will not lift more than 0. Because music is a continuous input, and voice input is interrupted, so there is a certain difference in the operation. To turn a small gain when using high level input. Gain knob as a sound mixer input gateway, properly adjusted, it can ensure that the audience tuning processing circuit level can receive adequate and "clean" signal. 6.HIGH, MIDDLE, LOW: three-band equalizer knobs High, Middle, Low, respectively, can be high, medium, low frequency boost or cut, the control range is plus or minus 15 dB. IF control is particularly useful when voice revenues, mixer, can be very accurately modified performer's voice. Bass: 20 Hz ~ 500 Hz, when appropriate, proper relaxation bass sound plump and soft. Mixer | Wuhan sound engineering | Entertainment DJ mixer used by the Wuhan Engineering Co., Ltd. Jiuhua video. Mixer | Wuhan sound engineering | Entertainment DJ mixer with video Jiuhua Wuhan Engineering Co., Ltd. (www.jowa-tech.com) this year introduced a new upgrade, the above picture is for reference only, please call this page or Tel picture on to obtain the latest information, contact: Mr. Lu.