In the audio industry, in addition to paying attention to power amplifiers, speakers, sound sources and other equipment, the signal connection wires are also very particular. The price of each line is in the high price of one hundred yuan to one thousand yuan or even ten thousand yuan. Some people say nothing about this. It is believed that investing money and energy on wire in order to improve sound quality is a great waste. The improvement of sound quality by wire is very small, and it is seriously unbalanced compared to its price. So how much does the signal line affect the sound quality? I'm not an audiophile, so I don't have a fanatical fascination with wires, but I also deny the uselessness of wires. I will discuss my views on audio wires with a pragmatic attitude.
Any transmission cable can be equivalent to a distributed system composed of resistance, capacitance and inductance. Due to the presence of capacitance and inductance, the transmission cable has its special frequency characteristics, that is, different delays for signals of different frequencies (also That is, so-called different transmission rates) and different impedances. Obviously, this will cause some distortion of the signal. In addition, the resistance of the cable will also cause loss of the signal, but because the audio signal connection line is usually relatively short, this loss can be ignored. However, the speaker cable cannot be ignored because the cable between the amplifier and the speaker is long and the power transmitted is large. The resistance of the cable will directly affect the output stage of the amplifier (the load impedance becomes larger). Another important parameter of the transmission line is the characteristic impedance. Although the small signal in the audio electronic circuit is connected, the impedance matching is not as particular as the high-frequency circuit or the large-signal circuit, but if the difference is too large, it will affect the timbre of the playback. .
The sound sources of the audio amplifier are roughly: radio head, tape head, CD player, record player, etc. The output impedance of these sound sources is different, so the characteristic impedance of the wire should be close to the output impedance of the sound source equipment when mating.
We can divide the signal line into strong signal line, weak signal line and standard signal line to discuss separately:
1. The strong signal line refers to the connecting line between the speaker and the power amplifier. This type of wire often does not have a shielding layer. For this type of wire, the key is to reduce its resistance. Because the output resistance of the modern power amplifier is very low, The requirements also increase, such as the use of large cross-sectional area or multiple stranded wire. The wires are available from pure copper to silver wires. A relatively expensive speaker wire is a dedicated wire for oxygen-free copper speakers. Its main characteristics are good conductivity and low resistivity. When it is used, the sound tone does not increase when replaying the sound. less. Because the transmission line has different impedances to signals of different frequencies, this characteristic appears to be blurred in the reproduction of sound. For this reason, people have produced a high-end speaker connection line called an intelligent signal line. The characteristics of this line The signal is divided into two channels according to the frequency level. The outer layer of a certain thickness passes the signal above 5KHZ, and the signal below 5KHZ is transmitted through the inner layer of the line. This greatly improves the frequency characteristics of the transmission line and makes the replay The sound is clear and transparent. However, if your amplifier output power is small or the speaker cable is short, do n’t spend the money on this expensive wire. In this case, the effect is not outstanding.
2. The weak signal line refers to the connection between the microphone and the preamplifier, which is usually a shielded line.
3. The standard level signal line refers to the connection line between the sound source and the power amplifier. Its transmission level is about 1V, and it is also a shielded transmission line. This kind of wire is the most widely used in the audio industry. What is interesting is that wires made of different insulating media and metal materials have a subtle effect on the sound quality. For this reason, manufacturers have produced various types of wires to meet people ’s Different levels of music appreciation. The high-end finished wire is made of nylon braid coated with anti-static layer as the outer layer, lined with metal shielding sleeve and then oxygen-free pure copper as the core wire, and then equipped with a gold-plated plug to prevent the plug from contacting and generating noise. Brands of standard-level signal wires are: American MONSTER STANDRDINTERLINK (monster), AUDIO0UEST (line sage), SUPRA (tortoise), M0NITERPC (magic), SPACE & TIME (time-out space), MISSION (Baisheng), PATRDNICS (Bai Li) and many more. Japan's MAKURAWA (Mellow), DENK0 (Climb), PATRD N I C S (Bai Li) and so on.
Japan's MAKURAWA (Mellow), DENK0 (Ascend), 0SONIC (Osonic), PC 0 CC (Furukawa), ACROTEC (Japan Mining), HISAGO (Sansha), Lux, Golden Throat, etc., and Europe PHILIPS (Netherlands-Philips), VDH (Netherlands-Wandenhall), IXOS (United Kingdom-Aethos), 0RT0F0N (Denmark-high wind), etc., these lines are all through the use of different production materials and processes To achieve the purpose of changing the frequency characteristics to improve the sound quality of the playback, at best it only plays a role in improving the expressiveness of the music.
If you are not a music fan or your power amplifier is too low, you should not spend money to buy these expensive audio cables, because if your amplifier is inherently inadequate for music performance, use ordinary cables and expensive Price wire effect is the same. According to one of my audiophile enthusiasts, if your amplifier price does not exceed 20,000 yuan, the use of expensive cables will not show any effect on improving the sound quality.
In summary, for a set of audio system, the selection of standard level signal wires only has an auxiliary effect on the sound quality. Expensive audio wires can only love the expensive amplifiers. According to the size of the output power to choose the right speaker cable is the most practical.
Any transmission cable can be equivalent to a distributed system composed of resistance, capacitance and inductance. Due to the presence of capacitance and inductance, the transmission cable has its special frequency characteristics, that is, different delays for signals of different frequencies (also That is, so-called different transmission rates) and different impedances. Obviously, this will cause some distortion of the signal. In addition, the resistance of the cable will also cause loss of the signal, but because the audio signal connection line is usually relatively short, this loss can be ignored. However, the speaker cable cannot be ignored because the cable between the amplifier and the speaker is long and the power transmitted is large. The resistance of the cable will directly affect the output stage of the amplifier (the load impedance becomes larger). Another important parameter of the transmission line is the characteristic impedance. Although the small signal in the audio electronic circuit is connected, the impedance matching is not as particular as the high-frequency circuit or the large-signal circuit, but if the difference is too large, it will affect the timbre of the playback. .
The sound sources of the audio amplifier are roughly: radio head, tape head, CD player, record player, etc. The output impedance of these sound sources is different, so the characteristic impedance of the wire should be close to the output impedance of the sound source equipment when mating.
We can divide the signal line into strong signal line, weak signal line and standard signal line to discuss separately:
1. The strong signal line refers to the connecting line between the speaker and the power amplifier. This type of wire often does not have a shielding layer. For this type of wire, the key is to reduce its resistance. Because the output resistance of the modern power amplifier is very low, The requirements also increase, such as the use of large cross-sectional area or multiple stranded wire. The wires are available from pure copper to silver wires. A relatively expensive speaker wire is a dedicated wire for oxygen-free copper speakers. Its main characteristics are good conductivity and low resistivity. When it is used, the sound tone does not increase when replaying the sound. less. Because the transmission line has different impedances to signals of different frequencies, this characteristic appears to be blurred in the reproduction of sound. For this reason, people have produced a high-end speaker connection line called an intelligent signal line. The characteristics of this line The signal is divided into two channels according to the frequency level. The outer layer of a certain thickness passes the signal above 5KHZ, and the signal below 5KHZ is transmitted through the inner layer of the line. This greatly improves the frequency characteristics of the transmission line and makes the replay The sound is clear and transparent. However, if your amplifier output power is small or the speaker cable is short, do n’t spend the money on this expensive wire. In this case, the effect is not outstanding.
2. The weak signal line refers to the connection between the microphone and the preamplifier, which is usually a shielded line.
3. The standard level signal line refers to the connection line between the sound source and the power amplifier. Its transmission level is about 1V, and it is also a shielded transmission line. This kind of wire is the most widely used in the audio industry. What is interesting is that wires made of different insulating media and metal materials have a subtle effect on the sound quality. For this reason, manufacturers have produced various types of wires to meet people ’s Different levels of music appreciation. The high-end finished wire is made of nylon braid coated with anti-static layer as the outer layer, lined with metal shielding sleeve and then oxygen-free pure copper as the core wire, and then equipped with a gold-plated plug to prevent the plug from contacting and generating noise. Brands of standard-level signal wires are: American MONSTER STANDRDINTERLINK (monster), AUDIO0UEST (line sage), SUPRA (tortoise), M0NITERPC (magic), SPACE & TIME (time-out space), MISSION (Baisheng), PATRDNICS (Bai Li) and many more. Japan's MAKURAWA (Mellow), DENK0 (Climb), PATRD N I C S (Bai Li) and so on.
Japan's MAKURAWA (Mellow), DENK0 (Ascend), 0SONIC (Osonic), PC 0 CC (Furukawa), ACROTEC (Japan Mining), HISAGO (Sansha), Lux, Golden Throat, etc., and Europe PHILIPS (Netherlands-Philips), VDH (Netherlands-Wandenhall), IXOS (United Kingdom-Aethos), 0RT0F0N (Denmark-high wind), etc., these lines are all through the use of different production materials and processes To achieve the purpose of changing the frequency characteristics to improve the sound quality of the playback, at best it only plays a role in improving the expressiveness of the music.
If you are not a music fan or your power amplifier is too low, you should not spend money to buy these expensive audio cables, because if your amplifier is inherently inadequate for music performance, use ordinary cables and expensive Price wire effect is the same. According to one of my audiophile enthusiasts, if your amplifier price does not exceed 20,000 yuan, the use of expensive cables will not show any effect on improving the sound quality.
In summary, for a set of audio system, the selection of standard level signal wires only has an auxiliary effect on the sound quality. Expensive audio wires can only love the expensive amplifiers. According to the size of the output power to choose the right speaker cable is the most practical.
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