A type of cable whose characteristics have been specifically optimized for transmitting an audio signal. Audio signals are transmitted electronically in the same frequency range as the sounds in real life. That is, the frequency response range of analog audio equipment coincides with the range of sounds perceived by the human ear. (20 - 20 000 Hz) or only slightly exceeds it. The sound quality is also affected by the properties of the insulation materials used. For cables intended for audio purposes, the shielding stocking material is always made of copper-based material. LC-OFC* copper is used in mid-range cables, and silver is often used in more expensive types. Most cables also have a directional effect due to the production technology made by pulling, so in higher quality models an arrow is indicated to indicate the correct connection direction. If there is no arrow, consider the direction of the inscription running on the cable. (amplifier to speaker - in case of speaker cable).
* LC-OFC (Long Chrystal-Oxygen Free Copper) - Long crystalline oxygen-free copper.
Hitachi's patented technology, announced in 1975, for oxygen-free copper cables manufactured in noble gas. During production, a cold drawing process is used, with the help of which the molecules forming the crystal structure in the wire will be significantly longer than in conventional conductors.
Oxygen-free copper cable:
A copper cable produced by a manufacturing process based on Hitachi's patented technology. This process results in a raw material with much more favorable properties for the transmission of signals. The effect of purity and crystal structure on conductivity can not only be seen and heard, but can also be measured with appropriate instruments. A percentage is used to give the purity of the metal. Copper that is 99,999 percent pure is called "five-nines" pure, which is the limit of OFC certification. They also produce six- and seven-nine-purity versions.
A cable that connects two consumer electronics devices to each other. Interconnect cables, unlike speaker cables, carry a signal with low current and relatively low voltage, so it is important to protect them from interference.
A type of connector for transmitting a two-channel stereo analog audio signal. The most common method of sound transmission of various equipment at the moment, which is most often transmitted through a pair of cables with an RCA connector. On portable equipment, the so-called "Jack" connector is also often used.
Symmetrical signal transmission:
A sound transmission system in which two sound signals that change exactly in counterphase to each other are transmitted simultaneously. For its transmission, three wire conductors (two conductors and one zero-point) and the so-called "XLR" connector are used. It can be found mainly on professional or high-quality home systems. It is mechanically more resistant and protected against noise and environmental disturbances than an asymmetrical signal cable with RCA connector.