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Mixing console

A mixing console or mixing desk is an electronic device for mixing audio signals, used in sound recording and reproduction and sound reinforcement systems. Inputs to the console include microphones, signals from electric or electronic instruments, or recorded sounds. Mixers may control analog or digital signals. The modified signals are summed to produce the combined output signals, which can then be broadcast, amplified through a sound reinforcement system or recorded.

"Audio mixer" redirects here. For the film profession, see Production sound mixer and Re-recording mixer. For the music profession, see Live sound mixing and Audio engineer.

Mixing consoles are used for applications including recording studios, public address systems, sound reinforcement systems, nightclubs, broadcasting, and post-production. A typical, simple application combines signals from microphones on stage into an amplifier that drives one set of loudspeakers for the audience. A DJ mixer may have only two channels, for mixing two record players. A coffeehouse's tiny stage might only have a six-channel mixer, enough for two singer-guitarists and a percussionist. A nightclub stage's mixer for rock music shows may have 24 channels for mixing the signals from a rhythm section, lead guitar and several vocalists. A mixing console in a professional recording studio may have as many as 96 channels.[1] Consoles used for live sound can go even higher, with some having up to 384 input channels.[2]


In practice, mixers do more than simply mix signals. They can provide phantom power for condenser microphones; pan control, which changes a sound's apparent position in the stereo soundfield; filtering and equalization, which enables sound engineers to boost or cut selected frequencies to improve the sound; dynamic range compression, which allows engineers to increase the overall gain of the system or channel without exceeding the dynamic limits of the system; routing facilities, to send the signal from the mixer to another device, such as a sound recording system or a control room; and monitoring facilities, whereby one of a number of sources can be routed to loudspeakers or headphones for listening, often without affecting the mixer's main output.[3] Some mixers have onboard electronic effects, such as reverb. Some mixers intended for small venue live performance applications may include an integrated power amplifier.

Terminology[edit]

A mixing console is also known as an audio mixer, audio console, mixing desk, sound mixer, soundboard, or simply as a board or mixer.

Input jacks

Microphone preamplifiers

Equalization

Dynamics processing (e.g. , gating), if supported

dynamic range compression

Routing, including direct outs, , panning control, and subgroup assignments

auxiliary-sends

Level-control (on small mixers, these may be rotary knobs to save space and cost)

faders

use monaural signals to produce simulated stereo sound through .

panning

provide required by condenser microphones.

phantom power

BBC Local Radio Mark III radio mixing desk

BBC Local Radio Mark III radio mixing desk

Allen & Heath Mixing desk for live performance

Allen & Heath Mixing desk for live performance

Mackie CR1604-VLZ mixing console in a home studio

Mackie CR1604-VLZ mixing console in a home studio

Focusrite Console 72 in 48 out with GML Fader Automation

Focusrite Console 72 in 48 out with GML Fader Automation

Harrison SeriesTEN

Harrison SeriesTEN

Gecko Exodus Odyssey MXR 5204L

Gecko Exodus Odyssey MXR 5204L

Aux-send

Board mix

Electronic mixer

Mix automation

Pan law

 – Video version of a mixing console

Vision mixer

Mixer how-to