xlr interface, also known as Cannon plug or Cannon terminal, is an audio equipment interface; the initial terminal was the "Cannon X" series, and later versions added a spring lock to become the "Cannon XL" series, and then the terminal contact The surface is covered with rubber, which became the source of its abbreviation XLR.
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Based on the original producer is James H. Cannon (Cannon Electronics, Los Angeles, California Founder of the company, which is now owned by ITT Corporation), XLR terminals are often commonly known as Cannon plugs or Cannon terminals. Initially, the terminals were of the "Cannon In addition to basically three pins, the XLR terminal can also have a larger number of pins.
XLR—Cannon Completely different, the Balanced Analog Audio interface uses two channels to transmit signals with the same signal and opposite phase. The receiving end device subtracts these two sets of signals, and the interference signal is canceled out, thereby obtaining a high-quality analog signal. This kind of joint is composed of three contacts, namely 1--Ground; 2--hot end (level); 3--cold end (-level). Of course, some equipment stipulates that 3 is the hot end (level). ); 2 is the cold end (-level). You should read the equipment manual clearly for this.
Benefits
XLR connector is the most widely used type of connector in professional audio systems. It can be used to transmit various audio signals in the audio system. Generally, balanced input and output terminals are connected using XLR connectors. In a sense, the use of XLR connectors is also one of the characteristics that distinguishes professional audio systems from civilian audio systems. The benefits are:
a. Using balanced transmission methods, they have stronger ability to resist external interference. , conducive to long-distance transmission (not more than 100 meters).
b. It has a spring locking device, which makes the connection reliable and not easy to pull off.
c. The connector specifies the signal flow direction to prevent connection errors.
XLR plugs are divided into male plugs and female plugs, and sockets are also divided into male sockets and female sockets. The contacts of a male plug are pins, while the contacts of a female plug are sockets. According to common international practice, the male plug or socket is used as the signal output terminal; the female plug or socket is used as the signal input terminal.
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