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Concept
Audio multicore cable
Summary
An audio multicore cable (often colloquially referred to as a multicore, snake cable or snake) is a thick cable which usually contains 4–64 individual audio cables inside a common, sturdy outer jacket. Audio multicore cables are used to convey many audio signals between two locations, such as in audio recording, sound reinforcement, PA systems and broadcasting. Multicores often route many signals from microphones or musical instruments to a mixing console, and can also carry signals from a mixing console back to speakers.
In audio engineering, the term multicore may refer to the several things:
an unterminated length of multicore cable intended for analog audio signals (a type of cable harness)
a terminated cable, with a multipin connector or many individual connectors
the entire assembly of a terminated multicore cable and stage box
Multicores usually create a link between the stage and sound desk, or live room and control room. When used in sound reinforcement, the multicore cable runs from the stage box or microphone splitter to the front-of-house sound desk, where it connects to a mixing console. Portable multicore cables, stored loose or on a drum, enable sound systems to be set up at temporary outdoor locations such as music festivals. Permanent installations, especially recording studios, use stage boxes mounted in the floor or walls, with the multicore cable running through the ceiling or false floor.
Without a snake, a rock band performing onstage, for example, would require 20 or more individual microphone cables running from the stage to the mixing console (typically located at the rear of a venue). This would be harder to set up, would cause tangled cables, and it would be difficult to identify each cable.
Different termination methods can be used on each end to suit the application. When individual connectors are used, three pin XLR connectors are most common, although phone connectors are occasionally used. An end with many individual connectors fanning out is sometimes called a tail or fanout, and generally connects directly to a mixing console.
Official source
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