How is Hi-Fi different from AV
1. Actual use:
HiFi equipment has a long history, mature circuits and diversified circuit programs. There are both stone machines and amplifiers. The main purpose is to perform high-quality playback of two channels. It is a relatively traditional product.
AV has been developed in the past ten years, and its main purpose is to use mathematical technology to achieve multi-channel high-quality playback as much as possible. Although imported flagship AV, despite adopting various technical measures, it is still difficult to match HiFi. It The advantage lies in the presence and envelopment of the real analog movie theater. The current format is constantly being updated and has not yet reached the point of maturity. The development of multi-functional and high-spec is the future trend.
Second, the difference between circuits and materials
The concept of HiFi fever is to adopt extreme technical means to obtain close to the true playback quality, so it is often cost-effective in terms of materials. Such as the use of large-scale cattle, giant ponds, exaggerated radiators, the best components and components are doing their best to have a fever.
Due to space constraints and many digital input and output circuits, decoding, audio and video switching functions, plus radio, remote control, screen display and other circuits, the materials are far inferior to the above, so I have to use enough principles to compromise to sacrifice some These indicators and performance are compromised at the cost. Moreover, because there are a large number of digital circuits in the machine (the digital circuits are most afraid of electromagnetic interference, and at the same time they are greatly interfering with other circuits). Why are the higher-end digital circuits more separate the audio and video circuits. This is the reason, in The materials can only be used with limited fever components to meet the basic requirements.
3. Differences in technical indicators (differences in several main technical indicators)
Hi-Fi: AV:
â‘ Power can be from tens of W to hundreds of W or even thousands of W â‘ Maximum at 200W / 8 Euro is also excellent â‘¡Frequency response can be from 0-100KHZ or more â‘¡Generally at 10-30KHZ
â‘¢The degree of distortion, from a few ten thousandths to one hundred thousandths â‘¢Most are within a few ten thousandths â‘£Signal-to-noise ratio: up to 110DB or more is very common â‘£95DB is very good
Fourth, the actual difference:
â‘ HiFi circuits are diverse in types A, A, B ... D. There are quality tubes and electronic tubes (tube amplifiers) ... field effect tubes (bile flavor), pursuing the ultimate ability.
â‘¡Most of the tubes use multiple tubes in parallel for compound push-pull, trying to improve the output power, damping coefficient, enhance the transient response, reduce multiple distortions, and maximize the effect of bursting the shed.
â‘¢Multi-style, multi-level, multi-price, and multi-variety, there are many different kinds of products, suitable for the needs of different grades, focusing on playback sound quality.
â‘£Easy to use and operate, even three-year-old dolls can be used, sometimes only two switches and one knob.
AV then:
â‘ The form of AV circuit is relatively simple, basically it is Class A and Class B, but in order to broaden the frequency response and reduce the loss, some new technologies are adopted to deal with it in order to seek interference from HiFi *.
â‘¡Because it is multi-channel playback, considering the size and power consumption, only single-ended push-pull form can be used (that is, only one pair of high-power discharge tubes per channel can be used, (except for very few front and rear AV amplifiers) The power is limited, and the use of a transformer is also very stingy, which is just enough to use (because the transformer is the main source of electromagnetic interference).
â‘¢The operation is complicated, especially the English screen display, the program setting is quite troublesome, the more high-end and the more complicated, often the adjustment is not good and the expected effect is not obtained.
â‘£ The only advantage is multi-function, and realize multi-channel playback, and produce the effect of the theater
Five, simple example comparison
Shanghai Kesong Vbi (produced two years ago) Japan Onkyo DS-939 (the flagship AV amplifier of the year)
1. Transformer capacity: 2 × 600VA = 1200VA 1 × 650VA = 650VA
2. Filter capacitor: 8 × 8200u = 65,000 microfarads 2 × 12000u = 24,000 microfarads
3. Power tube: 2 × 4 pairs = 8 pairs (two channels) 5 × 1 pair = 5 pairs (five channels)
4. Large professional radiator × 2 special-shaped radiator × 1 + cooling fan
5. The protection relay can move freely during large dynamic operation.
6. The ratio of internal fever components is that the amount of fever components is limited
7. Reference price 5000 yuan Reference price 15000 yuan
From the above comparison, on the two-channel playback, Vbi is undoubtedly better than DS-939, in addition to DS-939's multi-function digital decoding, digital input and output, audio and video switching, multi-channel playback, radio ... etc. The function makes Vbi stare at the side, and it is precisely the one-by-one mechanism that is everything to worry about.
6. Summary:
HiFi is the last position that hardcore enthusiasts insist on. For a long time, they have been confined by traditional thoughts. They do n’t want to and do n’t want to jump out of this circle. Feeling the powerful shock brought by the super dynamic, the spirit is greatly satisfied and sublimated, and the price paid for this is thousands of yuan, ten thousand yuan, ... until one million yuan and can not stop.
Compared with HiFi, AV is a new generation product, the format is constantly innovating, multi-channel playback has shown the trend of singularity, sweeping to every corner of the earth, its multi-function and digital circuits are rapidly developing to higher levels, and even the most The weak audio part is closely following HiFi's footsteps at a very fast speed, and will never be overwhelmed. For example, Onkyo's broadband technology, Panasonic, Suwon, Pioneer ... and other optimized audio technologies are rooted in AV. With a new attitude, people have to re-understand. The world's major audio brand companies have already noticed this irreversible trend, and have launched HiFi-compatible amplifiers and speakers. The gradual flow seems to make people have no time to think about who's advantages, so people here and there.
From the perspective of audio quality playback, the future AV and HiFi share the same path, and eventually will be no different.
(2) Selection of HiFi and AV
First of all, the following point of view is only a general phenomenon. High fanatics and big riches are not in this range. In the previous article, HiFi and AV have been compared briefly, but the first buddies are still making difficult choices and even confused. The choice is affected by factors such as personal well-being, listening environment, and financial resources. Of course, the first is financial resources. If there is money, everything can be done easily. The sound is now self-blowing, with a lot of carriers, as small as MP3, DVD, audio, etc., as well as giant speakers and Big Mac amplifiers, how to choose?
1. Choose from listening environment
â‘ Personal study room (including computer room), because the area is less than ten square feet, it is recommended to choose general Hi-Fi amplifier and bookshelf box.
② The bedroom (commonly known as the second audio room), with an area of ​​15-20 square meters, the recommended configuration is the same as above.
â‘¢ The living room is the main activity area with a large area, which is also the focus of ordinary people's home decoration. It is the place that can show the personality and the most conspicuous, but the subdivision can be divided into small living room and large living room.
The small living room generally has an area of ​​18-25 square meters, and the privacy is relatively strong. It is generally used for receiving important guests. The interior is relatively simple and generous, suitable for conversation and leisure. It is recommended to equip a slightly luxurious HiFi for the stereo. Proper. The large living room is often larger, from 25-60 square meters, there are two ways to choose:
1. HiFi combination:
Imported brands: suitable for better economic conditions, and higher requirements for sound reproduction.
Domestic brands: The new class of workers has high requirements on sound quality, and they are affordable and optional. In general, I push to choose domestic brands.
2. AV combination: imported brands:
â‘ Fanatical pursuit of fashion has a strong impact on visual requirements, projection is essential, and there are certain requirements for sound playback. You can choose to import high-end to flagship level.
â‘¡ Focus on fashion, but the silver bullet is insufficient, so I have to compromise. At the expense of some sound quality, I can choose a mid-range imported brand in exchange for a sense of presence and envelopment.
â‘¢ Being shy in the bag, but unable to sleep without playing the sound, and wanting to get acquainted, had to retreat to the domestic ground of the domestic AV. But it can also play the effect of falling apart and shaking.
Two or five groups of enthusiasts
1. Play HiFi to enjoy more orthodox classical music, which is more subtle and more rational to enjoy the true meaning of music. The interest and ideological spirit of life have been sublimated, and there are many things in spring and winter.
2. Also play HiFi, for the purpose of bursting the tent, to feel with the body, to pursue the dynamic effects and the ultimate music, let the music heal the wounds in the heart, and resonate with the joy of victory with music, which is also a high fever.
3. HiFi of Puduo, taste all kinds of music, also taste OK effect, increase the fun and quality of life. But I also look forward to the possession of high-end HiFi equipment and roaming in the audio circle for a long time. It is a buddy and the largest group in the audio industry.
4. Play AV, there is no lack of flaunting things, extreme publicity, irrational fever, pursuit of fashion: explosions on bang, booing of bullets, skimming of airplanes, sports cars forgive. He was addicted to the golden drums of 5 or 7 speakers, and was amazed by the hairlessness on the big screen. He was an AV enthusiast.
5. I also play AV, which is slightly more convergent than the above, but I also pursue the effect of audio and video, and I also have to decorate the facade. I also get 5-7 speakers in the same way. I can usually ridicule AV one, two, three. AV enthusiasts.
3. Several points of construction:
AV part
1. If the listening area is limited, do not choose AV as much as possible, because it is very inconvenient to use 5-7 speakers, and the points of sound are too close to the human ear, and the surround effect is often unsatisfactory.
2. Buying AV power amplifiers, it is strongly recommended to buy mid-range or higher products. Low-end AV can only be regarded as a chicken threat in terms of sound quality, which is uncomfortable. It is a pity that it can only leave a good-looking case in the end. Low-end AV is the main money-making machine of foreign companies, otherwise it is better to buy a domestic HiFi amplifier (referring to the same price).
3. For some review articles that are value-for-money and cost-effective, do n’t believe in being sober, the monster audio equipment is a penny, and there is no free lunch. Why the first import of high-end AV:
â‘ Because the current matching video equipment is greatly reduced in price, such as large color TV plasma TVs and back projectors, it will be cool to match them in the future.
â‘¡It is more versatile, except 5.1 or 7.1 channels for multi-format playback, such as radio, tone, audio and video switching, etc. are more practical. At the same time, the sound quality is reasonable, and is actively moving towards HiFi *.
â‘¢It has a stylish appearance, large screen display, rich information, and all with remote control function, especially suitable for young fans.
â‘£Although domestic AV amplifiers have made great progress at present, the power is generally made larger (this is much stronger than imported AV), but in terms of digital circuits and circuit design, they are still not comparable to imported brands, and there are even no small ones. difference.
HiFi part (circuit analysis and application of new technologies are omitted)
â‘ The domestic HiFi amplifier is quite mature at present, and the design has quite a personality. Among them, the components are almost all imported, and the design level and performance indicators are no less than imported brands. Among them, the production is relatively good, such as Shanghai Kesong, Beijing Tsinghua, Guangdong Shengya, Sichuan Xindeke ... Here I advocate domestic products.
â‘¡ But there are some immature domestic products, such as less sophisticated processing technology, less personalized appearance, and slow replacement. For example, the famous Ke Song Vbi and V8i have been put on the market for a few years. The color will not be changed. I am going to make some suggestions to Ke Song Zou Gong. Although the quality of the product is remarkable, the panel should be redesigned if possible, at least in terms of color, such as black and silver matte panels. Foreign brands have to be replaced almost every six months. The society is developing and the times are progressing. How can domestic audio stick to the rules. By the way: Audio products black is an eternal theme.
4. Summary
As for how to determine whether it is HiFi or AV, the most important factor is the orientation of personal hobbies. Between them, it is impossible to say which one is better than the other. As the saying goes, everyone loves radish and greens, and different tastes will affect the choice of the object. If It is a person with money, who is both lovely and beautiful. It is never an exaggeration to bring all HiFi and AV home, let them coexist peacefully, do their duties and enjoy themselves endlessly.
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