Phono Connector - also called RCA or CINCH/AV connector What is a Phono connector?A phono plug, also called an RCA jack or CINCH/AV connector, is a type of electronic signal connector typically used for hooking up audio/video equipment. The name "RCA" original comes from the Radio Corportation of America, who introduced the design in the 1930s to connect up a phonograph player (or turntable) and an amplifier. The word phono is an abbreviation of the word phonograph, because the connector was originally developed to allow the connection of a Phonograph turntable to a Radio Receiver, using the Radio as an amplifier. What is a phono lead used for? Phono leads are still most commonly used for carrying audio signals, for example for connecting a CD player to an amplifier, or for connecting a games console to an amplifier. Although original developed for carrying audio signals the phono plug has been adopted for many other uses, including as a power connector, an RF connector, and as a connector for speaker cables. The phono plug is widely used as a connector for composite video signals, despite the fact that it provides poor impedance matching. Phono connectors and cable are also used to carry SPDIF-formatted digital audio signals, with orange coloured plugs to differentiate them from other signal connections. Common Phone Connector Colours
Below is a table of common signals with their colour coding when used with phono connecters: | Analog audio | Left | White | | | Right | Red | | | Center | Green | | | Left surround | Blue | | | Right surround | Gray | | | Left back surround | Brown | | | Right back surround | Tan | | | Subwoofer | Purple | | | Digital audio | S/PDIF
| Orange | | | Composite video | | Yellow | | | Component video | Y | Green | | | Pb | Blue | | | Pr | Red | |
Note: sometimes black is used instead of white.
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