Why is the current speaker small in size and good in sound quality?

I have been playing stereo for more than 30 years. From the "brick" single channel to the current 7? 1 Channel Home Theater. Realize that sound is endless. Horn is the sound terminal of audio, so it is the key link of a set of audio quality. Generally speaking, the investment of speakers (speakers) should be 3 to 5 times that of power amplifiers. As far as common sense is concerned, the bigger the speaker, the better the sound reproduction effect. The smaller the speaker size, the worse the sound reproduction. There is a saying in the sound industry that "there is no big disappointment" and "one inch is bigger and one inch is stronger". Those who brag about the good trumpet sound are either manufacturers advertising. Either the player has insufficient funds to comfort himself. Give a popular example. Let a child sing bel canto opera, no matter how good it is, it is better than an adult to stand out. His voice is beautiful, but compared with other children. For another example, a mobile phone with thousands of dollars can make sound, but it is not as good as a small radio with dozens or hundreds. The reason lies in the size of the horn.

Of course, I advocate doing what you can. Your living area is only a dozen square meters. If you set up a set of tens of thousands, hundreds of thousands and hundreds of thousands of stereos, you will not be able to produce good sound because of the limited listening environment. Moreover, if you live in a bungalow and there is no soundproof listening room, as long as you turn on the stereo, your neighbors will knock on the sewer and warm the air pipe, and you are not in the mood to listen to good voices. Good sound must have enough sound pressure, sound field, etc.

As far as good sound is concerned, it must be that large-size speakers sound better than small-size speakers. Of course, the price is high. Today's small speakers are well-made because of the progress of materials, and the sound is really good. But only relative to the same level. Can't be compared with large-size speakers.

So before you ask this question, have you really heard and compared the bass effect and real sound quality of speakers with large speakers and large-caliber bass units?

What is good sound quality, what is general sound quality, what is acceptable sound quality, and what is your concept of distinction?

At present, you can see the small speakers on the market, although the sound is ok (for most people who don't know the sound), it can only be said that business people sell according to the demand, not the sound quality.

Most of the small speakers sold in the market have the advantages of small floor space and low price, which are suitable for the public who have no professional needs and take a fancy to it, so the sales volume is good ... But due to their small size, these speakers lack the frequency response range in the low frequency part, and the loudness and power are not strong enough. Therefore, the sale of small speakers does not mean that the sound quality of small speakers will be better than that of large speakers, but only represents people who really understand sound in the market. (In the same way, most people choose to buy smart phones around 1000 yuan, and few people buy mobile phones with 2000 yuan, 3000 yuan and 4000 yuan. This does not mean that 1000 yuan mobile phone performance is better than 3000 yuan mobile phone. It's the same phenomenon, but most people think it's unnecessary to use such a high-performance mobile phone. )

The speakers with really good sound quality are all large-caliber speakers (the bass unit should be at least 6.5 inches, not the small speakers as big as the palm of your hand), and only a small group of enthusiasts can buy them, not just a few thousand. At the same time, they will not go to supermarkets or computer cities to buy low-grade goods, but go to a special fever video store for audition, audition, payment debugging and setting after they come back. ...

See how you feel. A sommelier can taste hundreds of different wines. Can ordinary people do it? Technology is improving, and now some small speakers may have better sound quality than some big speakers before. It can't be said that small speakers can also achieve the sound effect of large speakers. According to my personal experience, the size of household speakers should be at least 17, 8 cm in order to have a good sound effect. You don't have to spend a lot of money to buy a good speaker. As a low-income group, people generally don't spend thousands of dollars on so-called good stereos unless they have special needs. As long as you carefully screen, the stereo you spend hundreds of dollars on may not be worse than the stereo you spend 1000 dollars on. It depends on what you mainly use it for. If it is mainly used for listening to songs, Bluetooth speakers are preferred. Because only by listening to songs online can you choose as you please. It is also the most convenient to play songs on your mobile phone, so choose a Bluetooth speaker. Never buy a square stereo. Because the design of square acoustics is different from that of room acoustics. It is not effective to use square stereo as indoor stereo. However, if you buy a square stereo, it is ok to use it instead of a TV speaker. All kinds of stereos have their own characteristics. Some have better sound and sound quality by Bluetooth connection, and some have more advantages by wired connection. So treat it differently.

1 Excellent design of speakers: Some Bluetooth speaker manufacturers choose very cheap speakers in order to cut corners, and the effect will naturally not be too good. However, the speakers of Bluetooth audio in large factories are generally produced or customized by themselves; The effect is calculated in advance; The final effect will of course be good! Excellent cabinet design: Generally, brand-name Bluetooth speakers are directly attached to the mesh or semi-closed cabinet (air leakage). Big brands of Bluetooth speakers will have a plastic shell (sound cavity) inside, which can absorb sound and shock. The sound cavity is separated from the circuit board; The wire entrance will be sealed with glue. 3. Enhance bass: Generally, Bluetooth stereos of big factories use empty pots (fake speakers) and guide holes (air outlets) to enhance bass, but their design is very reasonable; A famous brand Bluetooth audio also generally uses empty pots (fake speakers) and guide holes (air outlets) to enhance bass; But their designs are messy. 4 Tuning: Big-name Bluetooth speakers are generally tuned by miscellaneous goods.

The concept of sound quality is actually quite broad. Everyone's standards are different. However, there are still some * * * features that are generally recognized. For example, the high notes are not harsh and the low notes are elastic.

In the circle of enthusiasts, in fact, there is still a considerable market for small-caliber bookshelf speakers. It is generally believed that such a speaker has high fidelity, true sound reproduction and comfortable sound. Especially for some professional applications, such as monitoring occasions. In this respect, many foreign classic products have done quite well. So the so-called British accent, Swedish accent and other stories that people talk about are formed.

For most people who are keen on listening to shocking music. The so-called good speakers praised by enthusiasts have a bad reputation, that is, the so-called listening is not up to standard. It is also difficult to adjust.

The speaker units used in good speakers are all technical. For example, the diaphragm basins of bass speakers are mostly paper basins. Although it is only a small paper basin, there is still a lot of knowledge in it. Such as material, formula and technology. Each manufacturer has its own unique technology. Hearing, enthusiasts can't stop.

Sound system, acoustics is actually quite complicated. Everyone's standards are different. However, the process of groping is also very interesting.

The sound quality of small-sized speakers is not necessarily good, is it? It's just that the sound source is getting better and better. The tape used to sound good, but it still sounds good? Mp3 used to sound good, but now I can't listen to it. How can I listen to mp3? You want to listen to the whole full frequency band. The speaker size requires a tweeter, a midrange speaker and a large-size woofer, which is physically limited or technically limited. Unlike headphones, headphones can be made very small and reflect good sound quality. Small-sized speakers cannot emit heavy bass. I could still hear the four speakers in my car. I didn't know my original car speaker 4 until I added a subwoofer. 5-inch speakers can't produce deep bass at all, so the sound quality of small-sized speakers is good, which is simply that your requirements are low.

Now the size of the horn is small, but the sound quality is good? After reading all the answers here, most of them are comments from audio lovers, and the truth is correct. It should be said that the speakers produced by the same material and the same technical level are large in size and high in power, which is undoubtedly much better in sound effect. The sound effects of big speakers and small speakers are not the same, especially in the low frequency range. Generally, small-sized speakers are difficult to display. Therefore, enthusiasts who like to enjoy audio can't believe that a small speaker can show the music quality of the audio system.

But the theme of the question here may have another meaning, that is, why some small speakers can give satisfactory sound effects now? You can use a smaller speaker to give a satisfactory effect!

In this way, from the perspective of the technological progress of speakers, it is true that small-sized speakers can produce effects that large-sized speakers could not produce in the past!

First, the sensitivity is greatly improved. With the same power, you can have a relatively large sound output, two or three watts of power, and you can have five or six watts of sound effects. This is because the sensitivity of the speaker is improved now.

The key to affect the sensitivity of the horn is the moving coil magnetic field. At present, the performance of permanent magnets used to manufacture horns has been improved a lot. Due to the development of permanent magnet materials in China, small-sized speakers can achieve greater power output, so the acoustic effect of small-sized speakers has improved.

Secondly, the moving coil material and structure of the horn have been greatly improved, and the range of the small-sized horn can also be greatly improved.

Of course, the size and structure of the sound are also important. A good speaker structure can improve the response in low frequency range, and the auditory effect will be very different.

So with these advances, the sound effect of small-sized speakers is much better than that of previous speakers. Does this answer conform to the original intention of the main question?

I'll throw some cold water on you. The idea that small speakers sound good is not comprehensive. If the sound requirement is not high, it is suitable for you. Speaker is an important throat to express sound, and small speaker has a good midrange frequency. The most difficult thing for speakers is the low frequency, which sets off the music atmosphere. No matter how you make a speaker, the reflected energy on the back of the speaker is limited, and the lower frequencies will also be limited. The fundamental problem is that the sound pressure generated by small speakers is limited. Can not meet the needs of the home environment like the sound pressure of a speaker above 8 inches. Small speakers have a narrow range and are prone to megaphone effect. Listening to songs and strings is ok, but big dynamic music is difficult to do.

If the small-sized speaker refers to the portable speaker now, there is still a big gap between the sound quality and the big speaker (bookcase, floor box). It's just that the technology has really improved, mainly in bass. Nowadays, many portable speakers use radiation pots, which can enhance a lot of bass and reduce a lot of volume. Plus the current digital power amplifier (high efficiency, low heat) and digital decoding technology. Make the portable speaker powerful and can also be driven by battery. Now the sound quality of digital power amplifier has also made great progress. But in any case, there is still a big gap compared with the traditional power amplifier and big stereo. Specifically, the portable speaker is not transparent enough, the bass is dull, and the degree of separation is not ideal. Radiation basin requires high adjustment technology. Nowadays, many portable speakers of Harman Kardon and JBL use radiation pots, but compared with the traditional guide type, the labyrinth type is still not ideal. Why is there a market? The main reason is that it is small in size, easy to carry, does not occupy space, and meets the needs of most people. Real enthusiasts still like the sound quality of traditional loudspeakers.

The question asked by the landlord feels that there is a deviation in the understanding of hifi. Who does the questioner mean by low audio? The landlord may be talking about Bluetooth stereo. The modern small stereo owner feels good, so it is estimated that the landlord has never been exposed to hifi stereo. If you have time to listen to hifi audio, you will find a qualitative difference.