RCA input and output of car amplifier

RCA input and output is the main audio input and output interface of car power amplifier, of course, there are other interfaces such as binding posts. In order to achieve better results, car power amplifiers will also do special treatment on the interface, such as using large screw terminals, or using gold-plated ports to reduce signal noise.

    RCA is not specifically designed for which kind of interface. It can be used for audio and ordinary video signals. It is also a socket for DVD component (YCrCb), but the number is three.

    This is by far the most common type of audio/video terminal. This two-wire connection terminal was invented by the RCA recording company as early as the era when the radio appeared. There is also an older and stranger called the call terminal. "Turntable" connector. The RCA terminal adopts the method of coaxial transmission of signals. The central axis is used to transmit signals, and the contact layer on the outer edge is used for grounding, which can be used to transmit digital audio signals and analog video signals. RCA audio terminals are generally marked in pairs in different colors: the right channel is red (or the letter "R" for "right"); the left channel is black or white. Sometimes, the center and surround channel cables will be marked with other colors to facilitate the distinction when wiring, but all the RCA connectors in the entire system are the same in terms of electrical performance. Generally speaking, the RCA stereo audio cable is a set of left and right channels, and each channel is a line in appearance.

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