Weak current College】 【mixer of use --- Power By】 【China power house network.

When you first contact a mixer (especially the simulations of the desk), can easily be it panel presenters, a large number of knob and push rod swindle, in practice, however, per the significance of the push rod and knob is the same, so you only need to focus on understanding a channel operation method you can acquire a mixer of overall use.

Fewer branches of mixer with 4-channel and 8-way, way up in a 96-channel even more. A mixer for a per control consists of a master and secondary control of two parts. Auxiliary signals has a separate output can be realized in the same sound mixer can also output two sets or more mix signal.

Each channel has one or more specifications of signal input used to connect the system's sound recorder, audio sources, sampler or synthesizer, audio output, or plug in the circle, capacitor microphone, etc.

And these inputs of the next-door is usually a knob, we call it gain knob (trim), is used to adjust the amount of the input signal, that is, when the signal is too strong when it cuts, too weak when you upgrade to their (sometimes gain knob will be an attenuation of the button instead of the "pad", when the button is pressed or when the input signal up is to do a certain amplitude attenuation). Gain knob is as sound input mixer of the first gate, adjusting the fit, to guarantee the sound mixer next level of processing circuit can receive a full and "clean" signal.

When the gain knob set up later, you can use the channel volume faders (or volume knob, usually located at the bottom of the Mixer Panel) to determine the channel signal is sent to the size of the volume. Volume faders is actually a attenuator for on the channel output signal attenuation. When the bottom-most faders (or volume knob located on the left-most), signal attenuation is infinite, then the channel no signal output.

In volume faders of the above, you can find a sound like (PAN) knob, which is used to adjust the channel signal between the left and right speaker stereo position.

Some table in volume faders and sound like a knob design also between two buttons: mute sound (MUTE) and solo (SOLO) button. Mute sound button can be dynamic volume faders to the mix bus in the channel's signal to shut down. When the channel output volume has been fine-tuned and don't want to touch it again, this feature is very useful. When the solo button is pressed, then the other solo button was not pressed by the channel does not make any noise.

The vast majority of mixer provides a certain channel Equalizer function. A lot is not very professional mixer provides are segmented balanced function, reflected on a mixer is labeled "treble" and "bass" two knobs, when adjusting the two knobs at higher and lower than the manufacturer intended frequency of the signal that is being promoted or attenuation. The above is also commonly referred to as a two-stage balanced, and the third paragraph is more of a balance on the frequency bands (mid) to upgrade or attenuation knob. Other mixer also adds a select intermediate frequency point of knobs, we call it a semi-parametric equalization, and all intermediate frequency parameters if balance not only to selected Central frequency but also can select a frequency range to improve or attenuation.

General sound mixer for each channel are designed for 2-6 aux send (SEND, also called effect send) button. These knobs to control the channel signal is sent to the secondary output (AuxSEND) semaphore, several channels of signals can be supplemented by secondary dial out to a secondary port. When the auxiliary outlet connections after the effects, from auxiliary port output signals through effects processing, the effects of the output returned to the secondary return input mixer (AuxRETURN), and then blend with bus signals.

Control the amount of auxiliary signal returns knob General are arranged in a mixer control section on the right side of the bus. In live recordings, the auxiliary outlets can also be used to connect headphone amplifier for multiple listens to music while the singer.

For multitrack recording system designed for large-scale mixer each channel has a tape/line (Tape/Line) switch. This switch can determine each channel input source is microphone/line input source or multiple Rails machine's rail-independent output. When a multitrack audio recording, this switch should be placed in the line input status; sound recording is complete, on-rail signals contraction mixed, the switch should be placed in the tape input state, then the channel faders is actually the regulation more rail-rail signal output to the stereo bus semaphore.

The mixer has its channel in addition to the above mentioned enter the estuary, there is also a breakpoint insert (INSERT), used to connect l/4 \ "stereo plug (divided into head-Tip, ring-Ring, sleeve-Sleeve of three parts). When the mouth is no plug, the channel signal according to the above process with a mixer sections are processed; when there is a plug, the channel of input signal is disconnected, the plug Tip parts sent to external effects, treated by the Ring part back to the channel, and then gain, balance, sound like, volume, adjust the final output to a mixer's stereo bus. Like actuators, compressors, etc generally use this way to connect with a mixer. This way you can make the effect is only a certain channel signal processing without having to use effect send and return control.

Ultimately, the channel output signals mixed together, and then enter the stereo bus. Bus control part usually have control left/right channel of two (or a) master volume faders, adjust the effect returns quantity control knob, Headphone volume control knob, the output of the secondary output volume control knob (secondary output output signal is part or all of the channel's mixed-signal). On the secondary output of various flexible use, no space to do more to explain.

A mixer will typically have two or more VU (VolumeUnit abbreviation, which means the volume indicates) indicator. Some indicatorsThat kind of old-fashioned pointer table, the LED (light emitting diode) level table. Some sound mixer you can switch on indicator displayed with a different bus and channel level; some are designed for each channel and the bus has its own VU meter.