Question 2: What parameters does a good speaker mainly look at? First, the rated impedance. Common rated impedances of speakers are 4, 6, 8 and 16. At present, speakers are all driven by transistors or integrated circuit power amplifiers, and generally do not use output transformers. Therefore, the impedance of the connection speaker is mostly in the range of 4- 16 ohms, and the impedance of the speaker should be selected according to the requirements of the power amplifier.
Second, the effective frequency range. The wider the sound pressure frequency range, the better the frequency characteristics. The effective frequency range of speakers is strictly stipulated in the standards of the International Electrotechnical Commission. Now some manufacturers have marked the frequency response range of speakers, but they have not marked the effective range. For example, one pair of speakers is marked with a frequency response range of 20Hz-20kHz, and the other pair of speakers is marked with a frequency response range of 30 Hz-17 kHz. Compared with the latter, the frequency response of the latter pair of speakers seems to be not as wide as the former, but in fact, the frequency response curve of the latter pair of speakers shows that it only changes within 3dB, so the latter is better than the former.
Third, the frequency divider. Generally speaking, the performance of tri-band speakers should be better than that of dual-band speakers. Because the three-frequency division adds an intermediate frequency speaker unit, the intermediate frequency can be more rounded. But also reduces the power shared by the three speakers, so that the whole speaker can bear more power and output more volume. Of course, the three-way speaker has a midrange unit and a frequency divider, which is more expensive than the two-way speaker of the same grade.
Fourth, sensitivity. Generally speaking, 90d sensitivity speakers are enough to meet the needs of home audio.
Five, the diameter of the speaker. The diameter of the woofer is generally 20-38cm, and there are also super-large diameters of 60cm or 72cm; The diameter of tweeters is generally 2-6cm, and some are more than 9cm. For woofers, the larger the aperture, the better. Because the larger the caliber, the easier it is for the paper basin to deform when it vibrates, resulting in divided vibration, thus causing distortion.
Six, the speaker net weight. Generally speaking, the heavier the speaker, the better the quality. Because the heavier the speaker, the larger the magnetic steel or the thicker the plate used for the speaker, both of which will make the sound quality better.
Question 3: What do you think of the speaker parameters? General speakers will have these signs: 1 power. The higher the power, the louder the sound. Left and right channels 10W, bass 30W. 2 Frequency response, representing the sound Ding Fan of the loudspeaker. It is best to reach the hearing range of people. The hearing range of ordinary people is 20HZ~20KHZ. But multimedia speakers are difficult to realize, except for those high-priced products. Generally, 50HZ~ 18KHZ is fine. But quite a few of them are moist, especially some miscellaneous brands. 3 sensitive. In minutes. The higher the sensitivity, the louder the sound at the same power. Generally 80~90dB, there are also many chaotic images. The average is about 86dB, and those above 90 can be basically ignored. These are three basic parameters. Others are measured by professional instruments. Another point is that the weight of the speaker is very important. Because multimedia audio is made of power amplifier and subwoofer, and the transformer and speaker in the box are relatively heavy, and most of them are light with water. Try to choose a larger speaker size, and don't be afraid to take up space, especially the bass part. When you choose, you should give priority to listening. It's best to bring your familiar music discs, choose the most expensive one first, and then choose your favorite one, and you will know the difference by comparison. Try to listen to the audition in a quiet environment, and it is best to bring a good pair of headphones to listen first. The appearance and workmanship are up to you. The thickness of the box should focus on the top and try to avoid cardboard. Generally, you should choose wooden boards, and if you have money, you should choose aluminum alloys. The diaphragm of the loudspeaker also has many materials. Generally, paper is more common, and wool is a good choice for listening to songs. Trust your ears and eyes anyway.
Question 4: What do you think of the speaker parameters? General speakers will have these signs: 1 power. The higher the power, the louder the sound. Left and right channels 10W, bass 30W. 2 frequency response, representing the range of the speaker. It is best to reach the hearing range of people. The hearing range of ordinary people is 20HZ~20KHZ. But multimedia speakers are difficult to realize, except for those high-priced products. Generally, 50HZ~ 18KHZ is fine. But quite a few of them are moist, especially some miscellaneous brands. 3 sensitive. In minutes. The higher the sensitivity, the louder the sound at the same power. Generally 80~90dB, there are also many chaotic images. The average is about 86dB, and those above 90 can be basically ignored. These are three basic parameters. Others are measured by professional instruments. Another point is that the weight of the speaker is very important. Because multimedia audio is made of power amplifier and subwoofer, and the transformer and speaker in the box are relatively heavy, and most of them are light with water. Try to choose a larger speaker size, and don't be afraid to take up space, especially the bass part. When you choose, you should give priority to listening. It's best to bring your familiar music discs, choose the most expensive one first, and then choose your favorite one, and you will know the difference by comparison. Try to listen to the audition in a quiet environment, and it is best to bring a good pair of headphones to listen first. The appearance and workmanship are up to you. The thickness of the box should focus on the top and try to avoid cardboard. Generally, you should choose wooden boards, and if you have money, you should choose aluminum alloys. The diaphragm of the loudspeaker also has many materials. Generally, paper is more common, and wool is a good choice for listening to songs. Trust your ears and eyes anyway.
Question 5: What is a HiFi speaker and what is a monitor speaker? Can you tell from the parameters that it is a HiFi speaker? 1, HIFI means high fidelity. Hifi speakers are naturally high-fidelity speakers. Monitoring is for the purpose, which means that this speaker is suitable for monitoring the sound playback effect. Because there is no strict parameter index, generally speaking, the main difference between the two speakers is that HIFI belongs to appreciation and monitoring belongs to production.
2. The monitor speaker is not good. This logic is like pure water is not good to drink. Nothing is right, only that there is some truth. The truest voice is not necessarily pleasing to the ear. The official design of the monitoring equipment is to find the defects in the sound, so there is nothing wrong with saying that it is not good.
3. Most parameters of audio equipment are measured in the laboratory, and all parameters are for reference only. Moreover, compared with the actual hearing, the parameters of audio equipment are too few, and many things cannot be quantified into parameters, so parameters can never replace people's actual feelings. No matter how beautiful the parameters are, no one will buy them, and no one will run away with audio equipment. It's like describing a person's appearance. We can say how tall, how heavy and how wide he is, and even know how big his eyes are and how high his nose is, but if we really know what this person looks like, we have to actually see it.
Question 6: What do you think of the various parameters of the stereo? There are various brands of stereos. I don't know what your brand is But generally speaking, you can preliminarily judge the sound quality according to these main parameters.
First, the frequency response should reach the range of 20 Hz ~ 20 Hz, and the non-uniformity of the whole frequency band should be ≤1.5 db;
Second, the hunger-to-noise ratio should be ≥90db, and the higher the ratio, the better. Good voice can reach ≥≥100 db; ;
Third, the dynamic range should be ≥90db, the higher the better; Good voice can reach ≥≥140 db; ;
The fourth is motivation, depending on the specific situation. General household, such as a 6.5-inch bookcase, needs at least 30W effective power, and the larger the power reserve, the better. Of course, this is difficult to quantify here.
The short answer is as above.
Question 7: What do you think of the audio? How to tell the difference between buying a good stereo and not expensive, just the right one.
The following are some misunderstandings in purchasing audio for your reference.
Myth 1: Is the sound quality of expensive speakers necessarily good?
Generally speaking, the sound quality of speakers is determined by the price, but the price is not the only criterion for purchasing high-quality speakers. What matters is the sound quality of the speaker, because the price is not necessarily proportional to the sound quality, that is to say, if you pay twice the price, you will enjoy twice the sound quality. Even the CPU is the same Paying twice the price may not necessarily buy a CPU with double frequency. Even if the frequency is doubled, its performance may not be doubled.
This principle is even more obvious when applied to speakers. Personally, the so-called "excellent sound quality" has always been the patent of those "enthusiasts". It is difficult for the author to understand the description of sound quality by those fever masters, but some speakers are not very fancy in appearance, but the sound quality can make the author intoxicated and the price is not expensive!
Myth 2: You can't just look at advertisements when buying speakers, but also look at the actual effect.
Nowadays, there are many brands of multimedia speakers on the market, and it is inevitable that too many products will be mixed. It is inevitable that there will be overwhelming advertisements and some conceptual hype. Some manufacturers are trying to emphasize the differentiation of their own brands, and the shape design is also changing. In fact, it is often old wine in new bottles, and many places are not satisfactory.
Not long ago, I saw several brands of speakers, and the functions introduced in the promotional materials all looked very attractive, but after the trial, I found many problems, which were far from what was said in the promotional materials! A power is not enough, and the volume is distorted when it is adjusted to half; The other screw fixing the speaker has damage marks. It can be seen that it was not installed by the machine, but manually screwed on, so don't blindly trust the propaganda speaker to avoid making mistakes, and it will be too late to regret it!
Of course, everyone's auditory experience of speakers is different, so when choosing speakers, it is better to give priority to personal feelings, so that the speakers you buy can meet your personal taste, and the ones recommended by friends and businesses may not suit your own style.
Myth 3: the sound-absorbing cotton in the speaker does not represent the level of the grade.
Many consumers think that speakers without sound-absorbing cotton are low-grade speakers. Experts say this statement is not very scientific. Sound absorbing materials only play two roles in the sound box. One is to eliminate some resonance and contamination of the speaker; The second is to appropriately reduce the volume of the speaker, which has nothing to do with the grade of the speaker. Some people think that adding fillers to speakers is a panacea, which is all wet.
As long as the box body of the sound box is designed reasonably, has no obvious resonance and is large enough, a high-quality sound box can be made without filling materials. There are many successful examples in the field of speaker production all over the world. This is beneficial to the transient characteristics of the speaker box without the need for filling materials.
After careful design and processing, the speaker has basically reached the ideal state when it leaves the factory. In this case, changing the presence or absence of filling materials in the speaker at will have a lot of effects on the playback of the speaker, and most of these effects are negative. Too much filling will cause dull sound, poor transient characteristics and weak speakers.
Myth 4: Are wooden speakers good?
When I enter the electronic market, I will always meet enthusiastic sales ladies to recommend me, what kind of wood is a certain brand of speakers, how to ensure the quality and so on. Buying speakers is not buying furniture. If you buy furniture, good wooden furniture can be used as an important standard to measure the quality of products, because good wooden materials mean durability and even highlight the owner's taste.
But it doesn't matter much to the speaker, because the original board has the nature of resonance. When the speaker works, the wood itself will produce sound, which will affect the sound quality performance of the speaker. So it is unfounded to say that wooden speakers are good speakers.
Myth 5: Don't judge a book by its cover, it's important to look at the details.
The most important thing for us to buy a speaker is to look at the manufacturing process of the speaker, the material of the box, the tightness of the box, the caliber and quality of the speaker, and even the frequency divider can be seen from the inverted hole. First look at the outer layer of the speaker, whether there are obvious bubbles, scratches, warping and other phenomena, whether the seams are neat, and whether some plastic products in the box are rough, such as whether the wall of the frequency converter is thick and whether the surface is smooth. From these nuances, we can often see the quality orientation of the whole box.
In addition, carefully distinguish the box material and panel seam of the speaker.
Question 8: How to see the parameter quality of the speaker? Look at the place you want to listen to, how big the living room and room are, and then decide how big the amplifier you want and how much power the speaker can withstand. Look at the specifications you said (provided that the manufacturer does not inject water), such a speaker can be used in the space below 10 square meter. Signal-to-noise ratio is an important parameter to determine the quality of amplifier, which is slightly worse than ≥7590dB. But it can't be said to be an excellent power amplifier. General manufacturers will not say the sound parameters of speakers or speakers (some don't know how to say it, some refuse to say it). Even if there is, ordinary consumers don't understand. These are all electrical parameters, so it is difficult to see whether the sound quality is good or not intuitively. Therefore, the most important thing to buy a speaker is to listen more and compare more and listen to the same song. If possible, it is easiest to compare them with MP3 players and play a song they often listen to. Expensive speakers are not necessarily good speakers.
Question 9: How to treat the quality of famous brand speakers? You can know the quality of the speaker by looking at its parameters.
1. For example, the frequency response range of a loudspeaker is 55HZ-2 1KHZ(+/-3DB). This speaker has a minimum frequency of 55 Hz and a maximum frequency of 2 1 kHz.
General bookcases have this 55HZ bass, so the bass situation is very general.
However, the parameter (+/-3DB) shows that the speaker has high resolution, good sound quality and relatively expensive price. Because the bass is defective, it is not the best speaker.
This speaker is not as good as the following speaker, mainly because the bass is much worse.
2. The frequency response range of the other speaker is 38HZ-20KHZ(+/-3DB).
This speaker has a minimum frequency of 38 Hz subwoofer and a treble of 20 kHz. The frequencies above 20 kHz are inaudible to the human ear. Therefore, 2 1KHZ 25KHZ and 25KHZ are deceptive ultrasonic waves, and people's ears can't hear them at all.
The most valuable speaker is bass, and 38HZ is subwoofer. Generally, only floor speakers have this bass. If the bookcase is an advanced HiFi speaker, the price is more expensive, and it is a real advanced monitor speaker.
This speaker is much better than 1. Speakers, mainly bass, are much better, and they are broadband HiFi speakers.
If there is no (+/-3DB) parameter, the resolution of the speaker is not very good, the sound quality is almost poor, and the bass may not have a 38Hz subwoofer-plus or minus 3DB is the loudness error parameter of the frequency, and the error is only 3dB, indicating that the frequency response curve is smooth, there are no peaks and valleys, and the resolution is very high; If it is plus or minus 10 decibel, the loudness error will be large, and 38 Hz will be weak and almost inaudible. So the parameter (+/-3DB) is very important-the frequency response range is plus or minus 3DB, and you can hear the lowest frequency of 38HZ.
The quality of many imported brand-name low-grade speakers on the Internet is not very good (the frequency parameters are not good). Because it is a famous brand, the price has been raised a lot by the merchants. People who don't know the sound parameters don't know how the speaker sounds. When you say that the speaker parameters are not good, the speaker merchant will fool you-buying a speaker is not buying parameters, and the speaker depends on the ear to receive the goods. If you are a novice speaker, your ears can't tell whether the bass of the speaker is 38 Hz or 55 Hz.
If you buy a speaker with bad parameters and find that the sound is not good, they will continue to fool you-the speaker is not good now, but you haven't cooked the chicken yet. You've cooked the chicken for months, but the perch still doesn't work. You can't return it.
The parameters of famous brand speakers may be fake, so there is no reference value at all. The parameters of famous brand speakers are all genuine.
Speakers with 35-40 Hz parameters have excellent sound. If possible, you can compare the speakers with poor bass parameters, and you will understand what the parameters mean-this kind of ear reception is more reliable-you are not afraid of not knowing the goods, but you are afraid of comparing them.
If you listen to a speaker alone, ordinary ears can't accurately identify the parameters of the speaker.
You can ask if you don't understand anything.
Learn to look at the parameters of the speaker, and you won't buy expensive speakers with bad sound in the future.