Audio cable, also known as speaker cable, is mainly used for the connection of power amplifiers and main speakers and surround speakers in home theaters, that is, for connecting power amplifiers and speakers. Compared with video lines and audio lines, its circulating current signal is relatively large, and due to the large signal amplitude, audio lines are often without shielding. For this kind of wire, the key is to reduce its resistance, because the output resistance of modern power amplifiers is very low, so the requirements for speaker wires are also increased, such as the selection of large cross-sectional area or multi-stranded stranded wire. So how exactly do you distinguish between an audio cable and an audio cable?
1. Audio cable, audio cable:
The audio line directly passes through the power signal, because the passing current is large, usually the copper core of the wire will be relatively thick, in order to ensure the high frequency passage and reduce the resistance attenuation, most of them are silver-plated, gold-plated or oxygen-free copper wire. Audio cable, generally divided into copper-plated audio cable and oxygen-free copper audio cable.
Generally, oxygen-free copper is the positive electrode, and tinned copper is the negative electrode. The color of the double skin is red, both sides are brass, oxygen-free copper core, and the positive side is marked by a red line. The audio cable is composed of the corresponding number of copper cores, generally the more copper cores, the better the effect, the higher the price, of course, but if it is a home cable or ordinary speaker cable, in fact, 200 to 300 pieces are enough.
Audio line is used to transmit electroacoustic signals or data lines, through small current and small power signals, high impedance, easy to be interfered, so generally shielded wire, wire diameter is generally relatively thin. The types of audio cables can be divided into two categories, audio electrical signal cables" and "audio optical signal cables."
2. The difference between audio cable and audio cable:
The audio line mainly transmits the power signal, so the speaker line is required to have excellent conductivity and high-quality transmission ability. At present, oxygen-free copper audio wires, the so-called gold and silver wires, are more mainstream and have less resistance. Audio gold and silver wires are usually unshielded, because the current signal circulating in them is larger than the audio line and video line, and the amplitude of the signal is large. The most important thing is to reduce the resistance of the line, the impedance of the power amplifier when it is transmitted is very low.
The audio line passes through a signal of low power and low current, and the impedance is high and easy to be interfered with, so it is generally a shielded line, and the line is relatively thin. Audio lines are usually shielded, but audio lines are often unshielded, and the key is to reduce resistance. In the deep blue avenue audio line, the more expensive is the oxygen-free copper speaker special line, the main feature is good conductivity, low resistivity.
Audio electrical signal cable can be used for mobile phones, CD players, MP3 music output signal equipment connected to the power amplifier between the connection line. Speaker cables are mainly used in various types of speakers, PA engineering, home theater connections, and public space broadcasting systems.
