The development history of audio technology can be divided into four stages: electron tube, transistor, integrated circuit and field effect tube. 1906, American deforest invented the vacuum triode, which pioneered the electro-acoustic technology of human beings. 1927 After Bell Laboratories invented negative feedback technology, the development of audio technology entered a new era. Representative amplifiers such as "Williamson" successfully applied negative feedback technology, which greatly reduced the distortion of the amplifier. In the 1950s, the development of tube amplifiers reached a climax, and various tube amplifiers emerged one after another. Electron tube power amplifier is still the first choice for enthusiasts because of its sweet and mellow tone. The appearance of transistors in the 1960s made audio enthusiasts enter a broader audio world. Transistor amplifier has the characteristics of exquisite tone, low distortion, wide frequency response and large dynamic range. In the early 1960s, the United States first introduced a new member of audio technology-integrated circuit. In the early 1970s, integrated circuits were gradually recognized by the audio industry because of their high quality, low price, small size and many functions. So far, thick film audio integrated circuits and operational amplifier integrated circuits have been widely used in audio circuits. In the mid-1970s, Japan produced the first field effect power tube. Because the field effect power tube has the pure thickness and sweet timbre of the electron tube, the dynamic range reaches 90dB, THD.
2. What is high fidelity?
What kind of audio equipment is Hi-Fi? Hi-Fi is the abbreviation of English High-Fidelity, which literally translates as "high fidelity", and its definition is: playback sound that is highly similar to the original sound. So what kind of audio equipment plays Hi-Fi? Professionals in the audio industry use various instruments and means to detect various indicators to determine the Hi-Fi degree of equipment, while audio lovers often judge whether the equipment reaches their own Hi-Fi through their own ears. Judging the high fidelity of reproduced sound requires not only excellent equipment and software, but also a good listening environment. Therefore, there are differences between objective testing and subjective evaluation on how to correctly measure the high fidelity of audio equipment.
3. The main technical indicators of the sound system.
The performance of the overall technical indicators of the sound system depends on the performance of each unit. If the technical indicators of each unit in the system are high, then the overall technical indicators of the system are very good. Its technical indicators mainly include frequency response, signal-to-noise ratio, dynamic range, distortion, transient response, stereo separation and stereo balance.
1. frequency response: the so-called frequency response refers to the frequency range of audio equipment when playing and the relationship between the amplitude and frequency of sound waves. Generally, this index is detected based on the frequency amplitude of 1000Hz, and the frequency amplitude is expressed by logarithm, and the unit is decibel (dB). Theoretically, the overall frequency response of the sound system is required to be 20~20000Hz. In practical use, it is often impossible to meet this requirement because of the circuit structure and the quality of components, but generally it must reach at least 32~ 18000Hz.
2. Signal-to-noise ratio: The so-called signal-to-noise ratio refers to the ratio between the reproduction of sound source software by the sound system and the new noise generated by the whole system, mainly including thermal noise, AC noise and mechanical noise. This index is generally expressed by the logarithmic ratio (dB) of the rated output power of the playback signal to the output power of the system noise when there is no signal input. The signal-to-noise ratio of general sound system should be above 85dB.
3. Dynamic range: Dynamic range refers to the logarithmic value of the ratio of the maximum undistorted output power of the audio system to the noise output power of the static system during playback, and the unit is decibel (dB). The dynamic range of a sound system with good performance is above 100(dB).
4. Distortion: Distortion refers to some parts of the original audio signal (waveform, frequency, etc.). ) changed after the audio system played the audio signal. The distortion of the sound system mainly includes the following types: 1. Harmonic distortion: The so-called harmonic distortion means that the sound reproduced by the sound system has many additional harmonic components than the original signal source. This extra harmonic component signal is the frequency multiplication or frequency division of the signal source frequency, which is caused by the nonlinear characteristics of the negative feedback network or amplifier. The harmonic distortion of high fidelity system should be less than 65438 0%. 2. Intermodulation distortion: Intermodulation distortion is also a kind of nonlinear distortion. It mixes more than two frequency components in a certain proportion, and the frequency signals are modulated with each other. After passing through the playback device, a new nonlinear signal is generated, which includes a sum signal and a difference signal between each signal. 3. Transient distortion: Transient distortion, also known as transient response, is mainly due to the slow response of the amplifier when a large transient signal is suddenly added to the amplifier, thus distorting the signal. Generally, whether the envelope waveform of the amplifier output signal is similar to the input square wave waveform after the input square wave signal passes through the playback device indicates the amplifier's ability to follow the transient signal.
Stereo separation: Stereo separation indicates the isolation between the left and right channels in a stereo system, and actually reflects the crosstalk between the left and right channels. If the crosstalk between the two channels is large, the stereoscopic impression of the reproduced sound will be weakened.
Stereo balance: Stereo balance indicates the gain difference between the left and right channels in a stereo playback system. If the imbalance is too large, the sound image positioning of the reproduced stereo will be offset. Generally speaking, the stereo balance of a high-quality sound system should be less than 1dB.
4. How is the range and audio range of the sound reproduced by the sound system divided? What is the performance of each frequency band in music?
Generally speaking, the range of sound reproduction in a sound system can be divided into eight ranges: subwoofer, bass, midrange, alto, tenor, tenor, tenor and tenor. Generally, the audio frequency range can be divided into four frequency bands, namely, the low frequency band (30 ~150hz); In your frequency band (150 ~ 500 Hz); Medium and high frequency band (500 ~ 5000 Hz); High frequency band (5000 ~ 20000 Hz). Among them, 30~ 150Hz frequency band: can express the low-frequency components of music, so that viewers feel a strong sense of movement. 150~500Hz frequency band: it can express the expressive force of a single percussion instrument in music, and it is the part of low-frequency expression of strength. 500~5000Hz frequency band: it mainly shows the clarity of the singer's language and the expressive force of strings. 5000~20000Hz frequency band: mainly expresses the brightness of music, but too much will break the sound.
What parts does the speaker consist of?
There are all kinds of speakers in the market, but no matter which one, it is composed of two basic parts: speaker unit (called speaker unit) and box. In addition, most speakers use at least two or more speaker units to realize the so-called multi-channel partial sound playback, so the frequency divider is also an indispensable part of the telegram. Of course, there may be other components in the speaker, such as sound-absorbing cotton, inverter tube, folded "labyrinth tube", reinforcing plate/baffle, etc. However, these components are not necessary for any speaker. There are only three basic components of a speaker: speaker unit, cabinet and frequency divider.
Why do some speakers use two speaker units, some use three speakers, and some use four or five speakers? Is it okay to use a speaker?
The speaker unit plays the role of electroacoustic energy conversion, and converts the electric signal sent by the power amplifier into sound output, which is the most critical part of the speaker. The performance index and sound quality of the loudspeaker depend on the performance of the loudspeaker unit to a great extent. Therefore, the premise of making a good speaker is to choose a speaker unit with excellent performance. To sum up, the performance requirements of the horn unit mainly include high load power, low distortion, wide frequency response, good transient response and high sensitivity. However, it is very difficult to give consideration to distortion, transient and power at the same time in such a wide full frequency band range from 20 Hz to 20 Hz. Just like the road police, if you are too wide, you will definitely not see anything, and everyone in charge will be much more relaxed. The same is true for the horn unit, and the most effective solution is. For this reason, the horn factory has produced different types of units, some of which are only responsible for playing bass, called bass units, those playing alto are called alto units, and those playing treble units are only responsible for playing treble. In this way, targeted design can be adopted to make the performance of each unit better.
Therefore, although full-band speakers can be used to design speakers, based on the above reasons, the design method of covering the entire audio frequency band with multiple units still accounts for the vast majority. How many units are used depends on the frequency division of the audio range. It is enough to simply divide the treble and bass (or mid-bass) speakers. If it is a three-band speaker with high, medium and low sections, then at least three units are needed. Now the design method of two low-frequency units working in parallel is also very popular, so the total number of units may reach four; The frequency bands of some large speakers are more finely divided, and if the design of parallel operation of units is adopted, the total number of speaker units will be more. There is usually an "X-channel X-unit" scheme in the information or instruction manual of the speaker, which is a concrete description of the number of frequency division channels and the total number of units used in the speaker. For example, "three channels and four units" means that this is a three-frequency design speaker, with a total of four speaker units, and so on.
Debugging comments: This is Mr. Ye Xinhai's famous introductory work. In the top speaker, there is only one full-band unit. In fact, if the full-frequency unit can really do well, many of its advantages are not comparable to those of multi-unit speakers. However, full-range speakers are indeed hundreds of dollars everywhere, tens of thousands or even hundreds of thousands, but even thousands of dollars are difficult to do, even more difficult to do well. So we rarely see it.
What is the frequency divider for?
Because almost all the existing speakers adopt the design mode of multi-unit and multi-band playback, there must be a device that can divide the full-band music signal sent by the power amplifier into treble and bass output or treble, midrange and bass output according to needs before it can be connected with the corresponding speaker unit. Frequency divider is such a device. If the full-band signal is directly sent to the high, medium and low frequency units without distribution, the "redundant signal" outside the frequency response range of the unit will adversely affect the signal recovery in the normal frequency band, and may even damage the high and intermediate frequency units. In terms of circuit structure, the frequency divider is essentially an LC filter network composed of capacitors and inductors. The treble channel is a high-pass filter, which only allows high-frequency signals to pass and blocks this low-frequency signal. Bass channel is just the opposite, it only lets bass pass and blocks this high frequency signal; The midrange channel is a band-pass filter, except that the frequencies between the two intersections, one low and one high, can pass, and the high frequency and low frequency components will be blocked. In the actual frequency divider, in order to balance the sensitivity difference of high and low frequency units, attenuation resistors are sometimes added. In addition, some frequency dividers also add an impedance compensation network composed of resistors and capacitors, in order to make the impedance curve of the speaker psychologically flat and facilitate the driving of the power amplifier.
7. What should I pay attention to when connecting audio equipment?
More importantly, connect audio devices at all levels. Improper connection will not only affect the playback effect of the device, but even damage the device.
1. Basic requirements for equipment connection:
(1) signal level matching: When connecting audio devices, we must pay attention to the difference of input and output signal levels between devices. If the input signal level of the previous equipment is too high, it will produce nonlinear distortion, otherwise it will reduce the signal-to-noise ratio of the playback system and even fail to drive the amplifier of the next equipment. Therefore, it should be noted that the level difference between devices should not be too large. If the signal level does not match in actual use, the input signal level must be lowered by the attenuation circuit or raised by the amplification circuit. For the general dynamic microphone, the output voltage is several millivolts, so it is necessary to set up a first-stage amplifier circuit to amplify the signal and send it to the preamplifier circuit. For recording stand, CD player and LD player, the output signal level is above 0.755~ 1V, which can be directly sent to the preamplifier.
(2) Impedance matching: In Hi-Fi audio equipment, the output impedance of transistor power amplifier is low, while the output impedance of electron tube power amplifier is high. If they are connected to the loudspeaker with mismatched impedance, the output power of the amplifier will be unevenly distributed, or the transient characteristics of the loudspeaker will be deteriorated due to excessive damping. There are generally two kinds of impedance matching connections: balanced and unbalanced. The so-called balanced type means that the impedance of the signal transmitted by the two-core shielded wires to the ground is equal. The so-called unbalanced type means that one of the two-core shielded wires is grounded. When the balanced output is connected with the unbalanced input, it must be matched by adding a matching transformer.
2. Connector connection mode: In Hi-Fi audio equipment, the connection of the equipment depends on various connectors, and the commonly used connectors are as follows.
(1) Dual-core plug: it is mainly used for transmitting signals between various devices and as an input plug for microphone input signals. According to its diameter, it can be divided into three types: 2.5mm, 3.5mm and 6.5 mm.
(2) Lotus plug: it is mainly used as the input and output plug of the line between audio equipment and video equipment.
(3) Canon plug (XLR): it is mainly used to connect the microphone and the power amplifier.
(4) Five-core socket (DIN): It is mainly used to connect the cassette recorder with the power amplifier, which can concentrate the stereo input and output signals on one socket.
(5)RCA plug: RCA plug is mainly used for the transmission of video signals in equipment.
(6)F and M plugs: mainly used for the input and output of RF signals in audio-visual equipment.
As the terminal equipment of audio, speaker, like human voice, largely determines the quality of a set of audio. It is no exaggeration to say that choosing a pair of good speakers is the key to the success of a set of audio, and there is no room for carelessness. However, in today's audio market, there are hundreds of finished speaker brands, among which there are many internationally renowned brands, such as BOSE (Doctor), JBL, INFINITY (Swallow Lee), Westlake Audio (West Lake), PolkAudio (Sound of Music), ATC (King Brand) and B & W, T annoy, MonitorAudio, KEF, Chu Qing after the rain: Danish (Crown) DYNAUD 10 (Dana), Dali (Danny), Jamo (Zunbao): German Heco (ELAC) and Maagnat. French Voice of Dreams (VIS 10NACOUSTIQUE) and JMLab (Jin Lang): Domestic products include Voice of God series, Jin Lang, hivi, Xindeke, Gospel, Little Cyclone and so on. The quality is uneven and the price varies greatly. Even speakers of the same brand and series often have a higher sound quality, and the price will rise several times in the geometric product. This is precisely because the speaker is the slowest progress and the weakest technology since the invention of electronic audio engineering. According to the British "Fever Book", Rogersls 3/5 is an ancient English evergreen phonograph, which has been famous for many years. It was introduced in the 1960s and sold well for nearly forty years. Its pure and elegant timbre is still regarded as a hot commodity by many senior hi-fi enthusiasts. Today, with the high development of audio technology, it is really puzzling. So don't underestimate the speaker's creation. Don't think that speakers are just a few speakers and a few Hi-Fi or Hi-END boxes. The speaker's knowledge is too great to write, and schools have different opinions. However, for consumers, we just need to learn how to identify and choose. So for most inexperienced consumers, is there a popular and simple way for them to learn to judge the quality of a pair of speakers by listening to the following "seven points", rather than by expensive prices or luck:
1. Preliminary understanding of the speaker before the audition
A preliminary understanding of a pair of speakers can be identified by the steps of "observing, weighing, tapping and identifying": observing the process, weighing, tapping the box and identifying the nameplate.
Appearance technology is to judge the quality of the speaker from the first image of its appearance: the speaker made of natural logs is of course the best, and there are many world-famous supreme speakers, including Italian Chario (Li Zhuo) and Guarneri honest (famous piano), but such a good box will never be promoted everywhere because of environmental protection, lack of resources, difficult processing technology, long time and other factors, and the price will certainly not be low. Therefore, the common speakers are decorated with a thin layer of wood veneer on the surface of MDF medium density fiberboard: solid wood veneer, beautifully decorated speakers, especially rare wood veneers such as rosewood, sparrow eye, pear wood, walnut and red oak, which have excellent natural wood grain visual effect and smooth and comfortable feel. Especially those pianos polished with symmetrical butterfly pattern solid wood skin after multi-layer coating can be regarded as high-end boutique speakers, and there are very few counterfeit products. Boxes covered with PVC plastic belong to daily necessities. Although the workmanship is fine, it can only be regarded as low-grade goods at best. However, although the box decorated with this kind of paper veneer looks extreme, it is more important to pay attention to whether the sewing behind the box and the digging process of the horn installation position are accurate. Fake and shoddy products generally don't pay attention to these details, and they can be judged correctly with a little care.
In fact, even on hi-fi, we can hardly see the real log box. Because the wood that can meet the requirements of manufacturing speakers is extremely scarce, for example, the wood used by Chario in many top products is the top Italian red oak that has grown for more than 40 years. According to the Italian environmental protection law, the buyer must replant 10 similar saplings in addition to paying the wood price for each such tree species cut down.
Second, weighing: Good speakers mostly use 18 ~ 25mm high-quality MDF particle board, while high-end flagship speakers use overweight solid wood such as rosewood and yellow pomelo or multi-layer composite plywood, which is amazing in weight. Usually, the net weight of a pair of speakers reaches 50 or 60 kilograms. Most middle and low-grade customers eat soft particleboard, while fake and inferior products use inferior paper rubber board, so the weight is generally light. There is often a saying in the audio industry that "experts look at quality, laymen weigh it", and heavy speakers are definitely better than light speakers. However, it is necessary to be wary of unscrupulous merchants pouring sand and cement at the bottom of the sound body to gain weight and deceive consumers.
The third is to knock on the box: knock on the front, back, left and right baffles of the box with your knuckles, and all sides of the box will be heavy and slightly brittle. It feels that the plate is hard and thick, supported by many reinforcing ribs inside, the box structure is reasonable and firm, and various sound insulation and standing wave prevention measures are adopted. This kind of box has high processing cost and great difficulty, and there are few fake and shoddy products. If you hit the box with your knuckles, it will make a "poof, poof" empty sound, indicating that the plate is too thin, the material is too poor and the structure is unreasonable. And there is no sound absorption material or reinforcement inside, which leads to a large number of diffuse reflection and standing waves in the box. You will never get a good playback effect if you buy this kind of speaker.
The fourth is to identify the nameplate: the really good speakers have well-made gold-plated or chrome-plated nameplate signs, and the nameplate is generally engraved with distinctive trademarks, companies, names, places of origin and corresponding indicators. Imported boxes are in English, such as xxx manufacturing or manufacturing, corresponding trademarks, speaker indicator lights, etc. If only the design ... (XX design) or only a country name is vaguely marked, even apart from a few simple and extremely imprecise basic indicators, neither the place of origin nor the manufacturer can be seen, and the trademark has no registration mark. Most of these three products are suspected of counterfeiting. Brand-name speakers attach great importance to brand image and corporate visibility, so the attached nameplate logo is very standardized and exquisite, with all indicators, corporate names and places of origin available. Some nameplates are even thin metal plated with 24K real gold, and the fonts on them are still uneven. The product not only has the date of manufacture and production serial number, but also has the matching serial number and the ID card attached to the packaging box. For this kind of speakers, as long as the price is reasonable, you can generally choose with confidence.
2. Judging the speaker from the technical indicators.
As mentioned above, a technical label is usually attached to the back of the finished speaker: the content is nothing more than the frequency range, sensitivity, carrying power and impedance of the speaker. Sensitivity is the most important indicator of the speaker, which largely determines what kind of power amplifier the box should be equipped with, how much power it needs to push, and so on. The sensitivity of most audio-visual home speakers is between 86 and 92 decibels. For the same power amplifier, at the same volume (for example, the volume is adjusted to 10), the higher the sensitivity means that the louder the sound, the lower the power requirements and requirements of the speaker for the power amplifier. This is what people often say: speakers are easier to push. The sensitivity of professional speakers used in many commercial OK halls exceeds 100dB, so it's no wonder that many people think that singing karaoke in OK halls is very pleasant, and you can get a great volume with no effort. But don't think that the higher the sensitivity, the better. In fact, speakers with sensitivity over 92dB are all thin metal pots and PP pots, which will destroy the control of speakers, resulting in thin, beautiful, exaggerated and tough sound quality, and lack of many musical details and charm. Not suitable for high-fidelity listening. However, many famous mouths with rich and soft voices and full of music are usually less sensitive. For example, the sensitivity of top speakers such as Emperor ATC, Italian piano and Li Zhuo is only 82dB. This kind of speaker is often extremely difficult to serve, and it needs a giant power amplifier with a large output current to make it work in the ideal linear region, and the cost will never be small.
Most multimedia speakers use high-sensitivity speakers. In fact, a very important reason is that low-sensitivity units need high-power power amplifiers to push them, so the increased cost of power amplifiers is not a fraction of a dollar.
Another most important indicator is the frequency range. For example, the frequency range of the bookcase is 60Hz ~ 20 kHz 2.5 dB, and 60Hz represents the extension value of the speaker in the low frequency direction. The lower this number is, the better the low-frequency response of the speaker is: 20KHz represents the high-frequency spread that the speaker can achieve. The higher the number, the better the audio characteristics. The suffix +/- 2.5dB indicates the distortion of the above frequency range, and the smaller the distortion, the flatter the frequency response curve will be. The distortion of some speaker labels is 3dB, and its frequency range should be wider. Some speakers do not indicate this indicator, and the frequency expansion range will become very wide. For example, if the above compass box 1 does not indicate that the distortion is controlled within the range of plus or minus 2.5 dB, the frequency range can be marked as 40 Hz ~ 23 kHz. It should be pointed out that it is meaningless not to mark the frequency range of distortion. If manufacturers knowingly commit crimes, they can only suspect that they have ulterior motives and deliberately deceive consumers. At the same time, it also shows that the speaker indicators are not standardized, manufacturers lack confidence in their products, and it is difficult for people to buy with confidence.
Bearing power is a reference index of speakers, expressed in watts. This index does not explain the quality of the speaker, but only provides a reference for selecting the power amplifier. For example, the bearing power of a pair of speakers is marked as 10 ~ 200W, which means that the power amplifier needed to drive the speakers must have at least 10~200W output power, but it is forbidden to use the power amplifier above 200W for full power output. Otherwise, there may be concerns about burning boxes. Generally speaking, home speakers will never be pushed, only the problem of pushing well and pushing badly. The carrying power below 200 watts is much more than that of ordinary families, and it is not deliberately pursued too high.
Another indicator of the loudspeaker is the impedance value, which is generally 8 Ω as its nominal value. The impedance value of most dual-frequency bookcases is 8 Ω, and multi-unit multi-frequency floor speakers also have 6 Ω and 4 Ω. The smaller the impedance value, the greater the current to be driven and the higher the power amplifier required. In my opinion, it's best to choose a home speaker with a good 8 Ω impedance and a power amplifier.
A good speaker should have obvious personality.
In modern audio equipment, speakers are the oldest and most magical members. Some people say that it has "spirituality" and "life", and it is the precipitation of a country's national style, history and culture. Indeed, as far as brand speakers are concerned, speakers made in different countries and nationalities are branded with the cultural literacy, natural endowment and personality traits of the nationals of the producing countries. Especially for speakers with higher quality and higher grade, this personality will be more obvious. Secondly, for users, the same excellent speakers with different personalities still have a taste, and they like a certain style. As the saying goes, "turnips and cabbages have their own tastes", some people like graceful and passionate demeanor, some like gentle and gentle hermit personality, some like grand symphony, heavy metal percussion and rock music, and some prefer small-scale pastoral classical music, elegant and graceful solo and sweet and heavy vocal reproduction ... Of course, you can choose the ideal speaker according to your own taste. If you don't understand the truth, you will be disappointed to choose the right speaker with your own taste! After all, this investment is not cheap. So I suggest that you might as well know more, listen more, run more authentic audio products, listen to the opinions of friends and experts before buying. Meanwhile, what style do you like? I might as well ask myself a few more times, what did I buy this speaker for? Listen to music? Watch DVD? Sing OK? or ...
As far as the style of the speaker itself is concerned, the so-called beautiful sound, British sound, European sound and so on are popular in the audio industry. Americans pay attention to great strength and great motivation, especially those produced in the western United States, such as JBL, BOSE, Genesis and so on. It often shows a free and easy, rough and generous timbre personality. This may be related to the heroic temperament of cowboys galloping in the grasslands of North America in the western United States. The United States has a vast territory, with mountains and rivers, dense forests, clear blue sky and rich products on the west coast. Coupled with the wild and unruly character of the cowboy in the west and the infiltration of Hollywood culture and art, the speakers produced in the west have bright and beautiful timbre, clean and neat sound, wide opening and closing, and a kind of confidence and confidence are revealed in the rough and unrestrained. The surplus of each index is very large, especially suitable for rock, jazz and heavy metal percussion, professional OK hall and other occasions. However, in violin solos and classical strings, the music is a little light. The speakers produced in the eastern United States are more influenced by British and European civilizations because of geographical factors. In addition, the famous Philadelphia Symphony Orchestra advocates classical symphonies and influences regional culture with a large number of performances every year. Therefore, the speakers produced in the eastern region, such as INFINITY and Westlake, have both soft and delicate styles and broad and bright styles. No matter from the analytical power, sense of speed, sound stage positioning and fragrance, it is obviously different from western speakers, and it is very popular in Europe and the Far East.
British speaker is a typical European royal lineage, with soft and sweet timbre, dignified and elegant shape, flashy but not bright, and natural wood bark reveals gentle aristocratic gentleman style. Several world-class classic car speakers-Rogers (Jazz), Spando (Spanda) and Chu Qing (After Rain) were born here. Coupled with the glory of the former empire and the subtle influence of medieval civilization, as well as the humid and foggy geographical environment of London and the idyllic pastoral like a small bridge, the English sound is gentle, sweet, delicate, steady and gentle. It occupies a very high position in the field of family Hi-Fi and even Hi-END, and is most suitable for the performance of classical strings and the reproduction of human voices. Unfortunately, it is not effective in expressing large dynamic explosion scenes and low frequency sense.
German-speaking people fully embody the meticulous, rigorous and self-disciplined professional spirit of the Germanic nation. The timbre is natural, neutral and peaceful, clean and refreshing. Especially in the industry, it is famous for its exquisite workmanship, which is amazing. But strictly speaking, the timbre of German box is slightly tough in Leng Yan, which is more suitable for the playback of pop music.
Other European voices, such as France, Denmark, Italy, Sweden, Norway, etc., are full of French wit and romance and Italian Renaissance art. Nordic people are lively, cheerful and extremely exquisite traditional handicrafts: the timbre is pure and natural, the middle and high frequencies are slightly exaggerated, but they are very musical. And good compatibility, it is the best choice for family Hi-Fi/AV.
As for domestic high-quality speakers, there should also be a saying of "China's good voice". Recently, many experts and scholars are also writing articles to speculate. It's a pity that China's audio industry started late, including most manufacturers who are already famous in the Hi-Fi fever circle. It was not until the mid-1990s that they began to set foot in real hi-fi sound. At present, if the initial capital accumulation stage of "theory and practice" has not been completed, it is difficult to form its own unique style with any "voice". However, in just a few years, domestic boutique speakers have made a qualitative leap. The author thinks that a few fine speakers in China have formed their own style embryonic form, but they can only be said to be similar to a famous brand in a certain country, such as hivi, which is quite similar to the voice of the United States, while the voice of God of War series, the classic series of Sundeco and the compass series are more reminiscent of the British voice (but perhaps the explosion point and speed are slightly stronger than the authentic British goods). However, the small whirlwind and Jin Lang are more or less contaminated with European customs: only the bookcase "Canghai Longtong" carefully brewed by Mr. Zhang Bailiang has a unique flavor, with a mild and neutral tone, exquisite elegance, gentle and unrestrained appearance, and its appearance has been polished many times by China traditional earth paint, which is antique and natural, which really makes people feel a little "China sound". It is believed that based on the 5,000-year history of Chinese civilization, the ancient rhyme of the flat bell and Gong Yanxiong's muddy music from Xia, Shang and Tang Dynasties, as well as the unique implication, connotation and colorful feelings of China people, as well as the traditional cultural essence of Confucianism, Buddhism and Taoism, such as "moderation", "combining two into one" and "inaction", it is believed that in the near future, there will be a world-recognized "China Sound" application.
4. A good speaker should be very tolerant of listening.
I don't know if you have ever experienced it. When you turn on the stereo and enjoy music with great interest, at first you feel that the timbre is good and the sound is strong enough, especially the middle and high frequencies are bright and moving, and the low frequencies are also satisfactory. But after listening for a while, I felt uncomfortable. I was so tired that I had to turn off my cell phone and go. This kind of "tired" speaker can't keep the guests, because it makes people feel "noisy" and annoying. A "noisy" speaker means that the box is distorted and uncomfortable to listen to. Certainly not a good speaker.
Listening to a good speaker with good quality is like tasting a 30-year-old flower carving daughter line buried deep underground. The owner feels sweet and refreshing and drinks beer back.