XLRkontakter

XLR connectors, commonly referred to as XLRs, are a family of circular, locking electrical connectors used primarily for professional audio and related signals. They are robust metal-shell devices designed to ensure a reliable, balanced connection and to resist interference in live and studio environments. The term XLR originates from the Cannon Electric company, the original maker of the connector; the name has since become generic.

The most widely used variant is the 3-pin XLR, suitable for balanced microphone and line-level signals. Variants with more pins exist, including 4-pin XLRs (often used to carry DC power for cameras and other equipment) and 5-pin XLRs (notably for DMX512 lighting control data). Other pin counts are available for specialized purposes. XLR connectors are available in cable-mounted plugs (male) and panel-mounted receptacles (female), with a locking latch and a polarization key to prevent misalignment.

In the common 3-pin configuration, pin 1 is ground, pin 2 is hot (positive signal), and pin 3 is cold (negative signal). The balanced connection helps reject noise and interference over long runs. XLRs are widely used for microphones, line inputs, and interconnects in recording studios, broadcast, and live sound, as well as in some lighting installations.

Care and compatibility: XLRs are designed for repeated mating cycles and moderate power levels; they should be paired with appropriate cables and connectors and handled to avoid bent pins or damaged shells.