Can The Coaxial Cable Be Used As An Audio Cable?

Audio coaxial cable: its connectors are divided into RCA and BNC. Coaxial audio is an audio interface with both input and output functions. Unlike previous audio interfaces, it integrates a microphone (input interface) interface with a headset or audio (output interface) interface. Digital coaxial is an interface that outputs digital audio using the S/PDIF interface. A coaxial cable has two concentric conductors, the conductor and the shield are coaxial.

Coaxial cable is a copper conductor separated by an insulating material with an impedance of 75 ohms. Outside the inner insulating material is another ring conductor and its insulator. The whole cable is sheathed by PVC or teflon material. Around a circle. Coaxial cable has the advantages of stable impedance, high transmission bandwidth and audio quality.

Although the standard connector for coaxial digital lines is the BNC connector, most coaxial digital lines in the market use RCA connectors. Digital coaxial interface uses coaxial cable with impedance of 75 ω as transmission medium. Its advantages are constant impedance, wide transmission band, high-quality coaxial cable bandwidth up to hundreds of MHz. Standard connectors for coaxial digital transmission lines are BNC connectors with 75 ω impedance. When matched with 75 ω coaxial cable, impedance can remain unchanged and signal transmission is correct. In other words, 75 ohm coaxial cable suitable for transmission of high frequency digital signals should be used as the matching standard in the transmission cable matching.