What is XLR?
XLR refers to a type of electrical connector used in professional audio, video, and stage lighting equipment. The term originally stood for "X Series with Latch and Rubber," a reference to the physical characteristics of the connector. Over time, however, the term has come to be associated with a specific type of balanced audio interconnect used in professional applications.
History of XLR
The XLR connector was invented by James H. Cannon, founder of Cannon Electric in Los Angeles, California (now part of ITT Corporation), and for this reason, it was sometimes colloquially known as a Cannon plug or Cannon connector. Originally, the XLR connector was intended for use in film projectors, but it quickly found its way into many other applications as its reliability and robustness became recognized.
Over the years, the design and functionality of the XLR connector have evolved, leading to the creation of several different versions. Today, the most common type of XLR connector is the three-pin version, which is used for transmitting balanced audio signals. However, other versions with more pins are also available for more complex applications.
Design and functionality of XLR
The XLR connector is designed to transmit balanced audio signals, which are less susceptible to noise and interference than unbalanced signals. The connector has three pins: one for the ground (pin 1), one for the positive phase (pin 2), and one for the negative phase (pin 3). This configuration allows the signal to be sent over long distances without degradation.
The XLR connector also features a locking mechanism, which ensures a secure connection and prevents accidental disconnection. The connector's metal construction provides robustness and durability, making it suitable for use in demanding professional environments.
Uses of XLR in music
In the music industry, the XLR connector is used in a wide range of applications. It is commonly used to connect microphones to audio interfaces or mixers, and to connect line-level devices such as keyboards and synthesizers to mixers. It is also used to connect speakers to amplifiers in PA systems.
The XLR connector's ability to transmit balanced audio signals over long distances without degradation makes it an ideal choice for these applications. Furthermore, its robustness and reliability make it suitable for use in demanding professional environments, where equipment is often subjected to rough handling and extreme conditions.
