How can we understand the quality of a speaker? Xiaobian here suggests not to over-reliance on the data provided by the manufacturer. In addition to the evaluation of professional websites, we must pay special attention to the following points:
1. Initial understanding of the speaker before audition
For the initial understanding of a pair of speakers, you can use the " view, slap, knock, recognize " steps to identify: that is, a process, two weights, three knocking boxes, four recognized nameplates.
First, the appearance process is to judge the quality and quality of the first part of the appearance of the speaker: the speaker made of natural logs is of course the best, many world-class brand-name supreme speakers, including Italy's Chario ( Zhuoli ) , Guarneri Homage (famous piano), etc., but such good boxes are not popular because of the environmentally-friendly, resource-poor processing technology, long time and other factors, will never be as popular as the " rejoice " shampoo everywhere , the price is certainly not low . Therefore, the common speakers are decorated with a thin layer of veneer on the surface of MDF medium-density fiberboard: speakers with real veneer exterior, especially such as rosewood, bird's eye, rosewood, walnut, æ¡¢æ¥ , red oak. The rare wood veneer has a natural wood grain visual effect and is smooth and comfortable. Especially the symmetrical butterfly pattern real veneer is multi-layer coated and polished piano lacquer, most of them can be regarded as high-end boutique speakers, with few counterfeit products. Boxes with PVC plastic skins are large road goods, although the workmanship is fine, it is best to only consider the middle and low-end goods. However, the box decorated with the embossed paper should look at the skin seam and the horn mounting process behind the box. Counterfeit and shoddy products generally do not pay attention to these details, so they can be judged with a little care.
DEBUG comment: In fact, the real log box is almost impossible to see even on the Hi-Fi box. Because it is extremely rare to meet the requirements of the speaker, such as Chario 's wood used in many top products, it is the top Italian red oak that has been grown for more than 40 years. According to Italian environmental laws, every time you cut down such a tree, the purchaser must In addition to the price of wood, 10 other similar seedlings were replanted.
Second, the weight of the 掂: good speakers are mostly made of high-quality MDF particle board of 18 ~ 25mm , high-grade flagship speakers are made of super heavy solid wood or multi-layer composite plywood such as red sandalwood, yellow pomelo, so the weight is very amazing. Often a pair of speakers has a net weight of fifty or sixty kilograms. Most of the medium and low-end goods are made of soft particleboard, and counterfeit and shoddy products are made of poor quality paperboard, so the weight is generally lighter. Audio industry often "experts see quality, lay weigh weight," said the weight of the speaker is certainly better than the lighter speakers. However, it is necessary to be wary of bad merchants filling sand and gravel cement at the bottom of the sound body to deceive consumers.
DEBUG comment: Here are some wooden speaker products that use curved box design. Although the curved box looks good and is good for acoustic design, the wood used in these boxes is not as solid as the pure square. The structure of the product comes strong. This is quite a bit of a dilemma.
The third is to knock the box: use the knuckles to strike the upper and lower left and right baffles of the box. The sides of the box are solid and slightly brittle. The board material is hard and thick, and there are many reinforcing ribs inside. The box structure Reasonable and strong, with a variety of sound insulation and anti-standing wave measures. This type of box is costly and difficult to process, so there are few counterfeit and shoddy products. If you use the knuckles to tap the box to make a " å™—, å™— " sound, the board is too thin, the material quality is too poor, and the structure is unreasonable. There is no sound absorbing material or ribs inside, which results in a large amount of diffuse reflection and standing wave formation in the box. When you buy this kind of speaker, you can never get a good playback effect.
The fourth is to recognize the nameplate: really good speakers have a well-made gold-plated or chrome-plated nameplate mark, the nameplate generally has a distinctive trademark, company, name, origin, and corresponding indicators. Imported boxes are available in English such as: Made in xxx or Manufacture and corresponding trademarks, speaker indicators, etc. If only XX design or ambiguity is to mark only one country name, even in addition to simple and extremely imperfect basic indicators, neither the origin nor the manufacturer can be seen, nor the trademark is registered. Most of these three non-products are suspected of counterfeiting and counterfeiting. Brand-name speakers pay great attention to brand image and corporate reputation. Therefore, the label on the nameplate is very standardized and exquisite, and all indicators and company names and places of origin are readily available. Some nameplates are even made of thin metal plated 24K gold, and the upper font has a bumpy feel. The product not only has the date of manufacture, the serial number of the production, and even the matching serial number and the ID card. For such speakers, as long as the price is reasonable, you can generally choose.
2. From the technical indicators to judge the pros and cons of the speaker
As mentioned above, there is usually a technical label on the back of the finished speaker: the content is nothing more than the frequency range, sensitivity, carrying power and impedance of the speaker. The sensitivity rate is the most important indicator of the speaker, which determines to a large extent what kind of power amplifier should be selected for the box, how much power to push and so on. The sensitivity of most audio- visual home speakers is between 86-92dB . For the same amplifier, at the same volume (such as the volume is turned to 10 o'clock), the higher the sensitivity, the greater the sound, the speaker pair The power requirements and requirements of the amplifier will be lower. This is what people often say: this is a good push for the speakers. OK hall with many commercial professional speaker sensitivity of more than 100dB, no wonder many people feel OK hall to sing karaoke OK sound very pretty, and effortlessly get great volume. But don't think that the higher the sensitivity, the better. In fact, speakers with a sensitivity of more than 92dB are lighter, thinner metal basins, PP basins, etc., which can cause damage to the control of the horn. It leads to thin sound, partiality, exaggeration, and toughness, and lacks the details and charm of many music. Not suitable for Hi-Fi detection. Many brand-name speakers with thick and soft sounds are usually less sensitive. For example , the top speakers such as the British ATC , the Italian famous piano, and the Zhuoli are only 82dB . These types of speakers are often extremely difficult to service, and require a giant power amplifier with a large output current to operate in an ideal linear region at a cost that is not small.
DEBUG comment: Most of the multimedia speakers use very high-sensitivity speakers. In fact, an important reason is that low-sensitivity units require higher-power amplifiers to push, and the added cost on the amplifiers is not one-and-a-half-point.
Another most important indicator is the frequency range. For example, the frequency range of a bookshelf is 60Hz ~ 20KHz ± 2.5dB , 60Hz indicates the extension of the speaker in the low frequency direction. The lower the number, the better the low frequency response of the speaker : 20KHz represents the high frequency extension that the speaker can achieve. The higher the number, the better the audio characteristics. The ±2.5dB suffix indicates the distortion of the frequency range of the above segment. The smaller the distortion, the flatter the frequency response curve. Some speakers are marked with a distortion of ±3dB and their frequency range should be wider. Some speakers do not indicate this indicator, and the frequency extension range becomes very wide. For example, if the above compass one box does not indicate that the distortion is controlled within plus or minus 2.5 decibels, the frequency range can be marked as 40 Hz to 23 kHz . It should be pointed out that the frequency range without the distortion is meaningless. If the manufacturer knows what to do, it can only be suspected of being bad-hearted and deliberately deceiving consumers. At the same time, it also indicates that the speaker index is not standardized, and the manufacturer lacks confidence in its own products, making it difficult for people to buy with confidence.
The carrying power is a reference indicator of the speaker. It is expressed by how many watts. This indicator does not indicate the quality of the speaker. It only provides a reference for the optional power amplifier: for example, the bearing power of a pair of speakers is marked as 10 ~ 200W. That is to say, the power amplifier required to drive the speaker must have at least 10W of output power, but avoid using an amplifier with more than 200W for full power output. Otherwise there may be concerns about burning. Generally speaking, the home speakers will never be pushed. Only the good pushes and the pushes are pushed. The load power below 200 watts is more than enough for the average family. It is not deliberately pursued too high. .
Another indicator of the speaker is the impedance value, which is generally 8Ω . The impedance of most of the two-way bookshelf is 8Ω , and the multi-unit multi-frequency floor speaker also has 6Ω and 4Ω . The smaller the impedance value, the larger the current that needs to be pushed, and the required power of the power amplifier is correspondingly higher. In terms of the author's opinion, it is better to choose a 8Ω impedance for the home speaker .
3. A good speaker should have a distinct personality
In modern audio equipment, the speaker is the oldest and most amazing member. Some people say that it has " spirituality " and " life " , saying that it is a national national style and a sediment of history and culture. Indeed, in terms of brand-name speakers, speakers made by different countries and different nationalities are all branded with the cultural literacy, natural endurance and character of the nationals of the producing countries. In particular, the higher the quality, the higher the grade of the speaker, the more distinctive this personality feature will be. Secondly, for the user, the same excellent but different personality speakers, there are still problems with the taste, not like a certain style. The so-called " radish cabbage, each has its own love " , some people like the wind and fire, passionate and unrestrained grandeur style, some people love the gentle, elegant and bleak hermit character: some people like the scene of grand symphony, heavy metal percussion, rock music: some people are happy The idyllic classical music, the solo music of the elegant and elegant, and the sweet and heavy vocal replay ... It is a beautiful thing to choose the ideal speaker according to your own taste. If you don't understand it, it's very disappointing to choose a speaker that matches your taste. After all, this investment is expensive. Therefore, I suggest that you may wish to know more, listen more, run more authentic audio boutiques, listen to friends' opinions, and listen to expert opinions before purchasing. At the same time, we must also know what style we like? I might as well ask myself a few times, what do you buy for this speaker? listen to music? Watching a video? Sing OK ? Still ...
As far as the style of the speaker itself is concerned, the so-called American sound, British sound, European sound, etc. are popular in the audio industry. American speakers focus on strong strength and huge dynamics, especially those produced in the western United States: JBL , BOSE , Genesis ( Genesis ) and so on. It often shows a kind of free-spirited, rough and generous tone personality. This may be related to the heroic temperament of the western American cowboys running wild in the North American grasslands. The United States has a vast territory, with mountains and rivers on the west coast, lush forests, blue sky and rich products. Coupled with the wild and unrestrained character of the western cowboys and the infiltration of Hollywood culture and art, the sounds of the speakers produced in the West are bright and beautiful, the voices are clean and sleek, and the boldness and sturdiness reveals a kind of weightless alcoholism and self-confidence. The various types of indicators are very large, especially suitable for rock, jazz and heavy metal percussion, professional OK Hall and other occasions. However, the music is slightly lighter in violin solo and classical strings. However, speakers produced in the eastern United States are more influenced by British and European civilizations due to geographical factors. Together with the famous Philadelphia Symphony Orchestra, which advocates classical symphony, it affects regional culture with a large number of performances every year. Therefore, speakers produced in the eastern region, such as INFINITY and Westlake Audio , have a soft, delicate and broad and bright style. No matter the resolution, speed, sound field positioning and loose fragrance of music, it is obviously different from Western speakers and is favored in Europe and the Far East.
The British speaker has a typical European royal lineage, the tone is soft and sweet, the style is dignified and elegant, and the Chinese is not beautiful. The natural veneer reveals a gentle gentleman gentlemanly style. Several world-class vintage car speakers --Rogers (jazz music), Spendor (think BOND), HARBETH (Daybreak) was born here. Coupled with the glory of the past and the subtle influence of the medieval civilization, and the dense and foggy geographical environment of London and the idyllic pastoral songs of the bridges, the British voice is gentle, sweet, delicate, steady, and Sven. It is very high in the home Hi-Fi and even Hi-END field, and is most suitable for classical string and vocal playback. It is a pity that it is less effective in the performance of the big dynamic burst scene and the low frequency sense.
German speakers fully reflect the professionalism of the Germanic people, meticulous and self-disciplined. The tone is natural and neutral, clean and fresh. Especially known for its exquisite workmanship, it is amazing. But strictly speaking, the German box sound is slightly cold and tough, more suitable for the playback of popular music.
Other European sounds such as France, Denmark, Italy, Sweden, Norway, etc., are ubiquitously infiltrated by the French people's wit and romance, the Italian Renaissance art atmosphere, the Nordic people's lively and cheerful and extremely beautiful traditional craftsmanship: pure natural sound The medium and high frequency is slightly exaggerated, but it is very musical. And has a very good compatibility, is the top choice for the home Hi-Fi / AV dual-use type.
As for the domestically produced boutique speakers, there should also be a " Chinese sound " . Recently, many experts and scholars have also written hype. Unfortunately, China's audio industry started late, including most of the manufacturers that have some reputation in the Hi-Fi fever circle. They also started to intervene in the real high-fidelity sound in the mid-1990s. If the " theory and practice " is not completed , At the stage of capital accumulation, it is difficult to use what " sound " to form its own unique style. However, in just a few years, the domestically produced boutique speakers have made a qualitative leap. The author has thought that a very small number of domestically produced fine products have formed their own styles, but they can only be used in a similar brand name. For example, Huiwei is quite similar to American sound. And the VOA God of War series and the New Dirk classic series, the compass series makes people think of the British sound (but maybe the bursting and speed part is slightly stronger than the British authentic goods). The small whirlwind and the golden cymbal have more or less dyed the European style: only the " Canghai Longyu " bookshelf carefully brewed by Mr. Zhang Bailiang has a unique flavor, the tone is neutral and neutral, delicate and elegant, gentle and bold, and the appearance is more It is based on the traditional Chinese clay paint, which is multi-layered, antique and natural, and it really makes people feel a bit " Chinese sound " . I believe that with the history of civilization in China for five thousand years, there is also the ancient rhyme of the flat bells of Xia Shang to the prosperous Tang Dynasty and the Gong Yan music of the giant articles. It is also the implicit, intrinsic, colorful feelings and Confucianism and Buddhism unique to the Chinese. The essence of traditional culture such as "The Doctrine of the Mean " , " Combined with One " and " Doing Nothing for the Rule " is the essence of traditional culture. I believe that in the near future, there will be a world-recognized " Chinese sound " application.
4. Good speakers should be very resistant
I don't know if you have experienced this kind of experience: When you open the sound and enjoy the music with great interest, the first sound is good, the sound is powerful, especially the mid-high frequency is bright and moving, and the low frequency is also satisfactory. But I felt uncomfortable after listening for a while. The special " tired " person had to shut down. This kind of speaker that makes people feel " tired " is not a guest, because it makes people feel " very noisy " and annoying . The speaker " noisy " person indicates that the box has a large distortion and is not resistant to hearing. Definitely not a good speaker.
Listening to the good quality speakers, it seems that the owner of the flower carving daughter line of the deep-buried 30-year-old Chen feels sweet and refreshing, and the beer is long. The kind of " sweet " and " warm " music will make you forget the time, space, and even forget your own existence and revel in the ocean of music, no matter how long you listen.
Good speaker distortion is extremely low. So regardless of the volume, it will make you sound very good. Even if the volume is turned to full power, the speaker will be shocking, and the low frequency rolling like a midsummer will only make you feel the natural and even horrible shock, but it will never make a sound that will make you escape. .
In general: thin sound, sound cool rigid, over-speed "fast" is not resistant to listen to speakers. It can be affirmed that they are all caused by the thin sound of the cabinet, the inefficient processing of the sound absorption, the simplification of the frequency divider, and the low grade of the speaker. Naturally can not be called a good speaker. The good speaker is very resistant, it not only keeps the guests, but the longer the listening time, the more familiar it is, the more the sound is in the ear. It's no wonder that so many audio enthusiasts are happy to be obsessed with the high fever!
5. A good speaker can hear the most subtle messages in the music background.
The expression level of the speaker on the music details determines the resolution of the speaker. A high-resolution box can contain a huge amount of music information, especially the amount of information on the music background. So that people can not hear more music details, harmonic afterglow and multi-angle, multi-faceted, diversified, multi-level music sound field through the theme unit. Listen to the first " Forgotten Time " recorded by Taiwan's "People's Songs" (Picture No. DJCD-96108 ). The first few sentences are a cappella. " Who is pounding my window, who is swaying the strings, The forgotten time of that period gradually rose back to my heart ..." Good speakers are singing, but the details are not monotonous, 3 seconds, 9 seconds, 12 seconds, 17 The ventilating sound between the seconds, the tooth tone of the lips and the reverberation of the vocals, clearly as if Tsai Chin sang quietly to you in your ear. The high-resolution speakers can even let you hear the subtle sounds of the band's footsteps on the ground when the band plays. Don't think that the author is blowing in God, as long as the CD is recorded well, and the replayed equipment is good enough, everything is possible.
DEBUG comment: Look at it in two, at least on the multimedia speakers, the products with particularly clear teeth are actually cross-frequency processing problems ...
A good speaker can faithfully reflect and reproduce various signal sources recorded on the disc, which can explode to a colorful color, and can also be slender to the air in a trembling or invisible shape. Therefore, before choosing a speaker, prepare a CD with a large amount of music information and familiarity on a regular basis . For example, Zhu Zheqin’s "Yang Jinma" (number YT-84 ) recorded on a Taiwanese UFO record is an amazing amount of music information. Test machine disc. Listening to the disc, you can distinguish the snow in the background by the singer of Zhu Zheqin's crystal clear singer. The Himalayas push the firewood and start the day's work in the fresh snow that sizzles in the morning. It is even possible to hear the Tibetan Northern Wind Valley paintings of Sahuan in the distance. Speakers with poor resolution are unlikely to provide such a rich music dinner.
Of course, when listening to the resolution of the speaker, you should use a special burst of signal sources, such as the explosive electronic film of artificial electronic synthesis, the heavy metal rock music, percussion, etc., which can leave a deep feeling. Often accepted, but the loud loudness will mask many innate shortcomings of the equipment. At the same time, don't let the volume go to the deafening, because the human ear has a strict limit on the loudness of the sound. Once the sound exceeds the limit, the suction becomes dull and even unbearable. There is simply no way to judge the details of the music.
6. A good speaker allows you to hear accurate sound image localization
The so-called sound image localization refers to the position of each instrument in the performance. For example, a large symphony club, sound-located speakers will make you feel the orchestra display as shown below: the first violin and the second violin group are generally located on the left side of the stage, the piano and harp are on the left, and the right side of the stage is generally It is a cello array, and later it is a double bass. The center of the stage is the viola, flute, oboe, garden, big pipe, trombone, trumpet, percussion and timpani.
A good speaker can reproduce the well-defined sound field positioning with great precision. Even if you are not an enthusiast, you can hear the sounds of various instruments from the front and rear of the virtual stage in front of you. It is just a mixed melody of various sounds emitted from two speaker point sources. Better speakers, audition in a professional acoustic chamber with strict acoustics and moderate size, you can even feel the unique spatial stereo and live feeling of the music concert!
Of course, as far as the average consumer is concerned, it is impossible to have such a good professional audition room for you to listen to. You can only choose the speaker in the harsh acoustic environment where the audio shop is free to play. But that does not matter, know in advance to bring a few bits of CD music is placed, as played by the Czech Radio Symphony Orchestra, conductor Adrian Lippe of Yin piano concerto "Yellow River": Playing live recording from the stage to see the face: piano It is placed in the front of the stage in the middle of the center, the right side is the cello, the right is the double bass, the middle is the wind music, the left is the violin group and so on. If you are sitting in front of the speaker to replay the recording, you should also feel the sound field positioning effect very close to the court. That is, the piano sound is absolutely in the middle to the left. A good speaker should be able to hear that when the piano is solo, the high part of the piano is on the left and the bass is centered. At the same time, Yin Chengzong's hands are fluttering back and forth on the left and right sides of the piano to produce a beautiful sound image movement. A poor speaker may hear a piano on both sides of the speaker at the same time, or the double bass that should have belonged to the right speaker becomes a middle or left sound, causing a chaotic sound field. The professional statement of this kind of speaker is called poor phase characteristics or phase disorder, which is definitely not desirable.
When you try to listen to a CD vocal disc, the vocals are sent from the left and right speakers, but the actual feeling for you is that the singer is standing in the middle of the speaker and actually sings at the position where there is no speaker. This phenomenon is called the spatial sound source image. A good speaker, such a sound source image can be felt by almost everyone. The best speaker allows you to feel that the person is singing right in front of you when you close your eyes, and even let you feel the height of the character and the size of the mouth. This is also the so-called " positioning " , it sounds like some " mysterious " , in fact, the speaker that can hear the correct " positioning " of the sound source is a highly fidelity speaker, of course, it is a good speaker.
7. Hi-Fi speakers and AV speakers do not conflict, but there are some emphasis
As home theaters continue to heat up, many friends often call to consult the author when they buy speakers. They say that there are many speakers on the market that are specially designed for the production of " home theaters " . Some even world famous manufacturers specialize in China's " home theater " is tailor-made. So what are the new technologies and new technologies used in these specially designed AV speakers? Are they different from the traditional Hi-Fi music box? What is the difference between the two? Many of my friends have indicated that their choice of speakers should be not only music, but also look at large, but also occasionally play karaoke OK, a fish to eat three! So I can't decide whether I choose a dedicated AV speaker, or choose a Hi-Fi speaker. Except for a few outstanding characters, most of them have very good acoustic reduction ability, which is absolutely good for " home theater " . Various sound effects. Even a small bookshelf such as the Warrior 700 , although limited by the low frequency of the unit, but with an active subwoofer can still be extremely explosive! The only difference is that the so-called home theater box is only a little magnetically shielded on the speaker to prevent it from being too close to the TV (usually within 35 cm) to magnetize the screen. Then it is intended to exaggerate the low-frequency end of the crossover to enhance the bass effect. The horn of the horn should also use light, thin and rigid materials to achieve faster speed and higher sensitivity. The quality of most AV speakers is not high, and the distortion is often large. However, when used to watch European and American action movies, the volume is often louder, and there are many exciting and intense shots that attract your attention and are distracted to pay attention to the performance of the sound. This subtly masks many congenital deficiencies and distortions that do not meet the requirements of true home theater speakers. Real home theater boxes require higher resolution and good sound field reduction, and they must not be noisy. These requirements are at the same time as Hi-Fi speakers. A really good speaker is impossible to reject a home theater. But the so-called dedicated AV box that can only be used in home theater is definitely not a good box. Generally speaking, in the international audio exhibition held in Las Vegas every year, many of the five-star speakers on the list have never had a " home theater " special box. In fact, the home theater box for the Chinese market is a popular low-cost product derived from the popular VCD needs in China . The reason why today has a long position with Hi-Fi speakers is mostly due to the hype of manufacturers and misleading advertisements. Therefore, when you are paired with a home theater, I remind you to give priority to a pair of high-performance Hi-Fi speakers as the main box. The rest of the center, surround, should also strictly follow the above requirements for audition selection, it is best to buy the brand-name products produced by regular Hi-Fi manufacturers. By the way: for it is necessary to appreciate the large, prefer to play Kara OK friends, choose a pair of three-way floor boxes without having to bother with subwoofer can also be removed from the fear of burning consider tweeter, you May pay more attention.
If you are confused when purchasing a home theater, you can add QQ or WeChat: cnhifi to consult us, to solve your practical problems is our driving force!
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