What Is a Speaker Terminal?

RCA terminal ( RCA jack , or RCA connector ), commonly known as plum head , lotus head , is a widely used terminal, which can be used in applications including analog video / audio (eg, AV terminal (three-color cable)), digital audio (Eg: S / PDIF) and color difference components (eg: color difference terminal).

For the most common use, there is a standard plug at both ends of the wire, and there is a male connector in the center, surrounded by a ring, which is sometimes discarded for flexibility. The device is equipped with a socket , and there is a small hole in the center surrounded by a metal inner ring. The outer ring diameter of the socket is smaller than that of the plug to allow the plug to be firmly inserted. Between the inner and outer rings on the socket

One disadvantage of RCA is that whenever an independent signal is required, an independent cable is required. There are many cables. On the one hand, it causes difficulties in wiring. In addition, after connecting the cables, the messy cables also affect the appearance.

In order to get rid of the annoying cables, there have been countless terminals launched, hoping to be able to transmit audio and video at the same time, but it is difficult to become an international standard-notably-in Europe,

RCA terminal is also called "phono connector", which is literally translated as "

• American Radio Corporation (RCA)