Computer speaker equipment may have become a rigid need, or an indispensable peripheral in entertainment life, because with the continuous development of software and hardware technology, computers have become the needs and necessary equipment of the family or everyone, and computers are no longer just For office use, it has gradually become an important platform for multimedia entertainment. Then one of the most important equipment is the speaker, so Zifan will share with you how to buy a good enough speaker device through Zeshui today.
As the terminal equipment of audio frequency, the sound box is like a human voice, which determines the quality of a sound box to a large extent. It is no exaggeration to say: Choosing a good pair of speakers is the key to the success of a set of speakers, not to be sloppy. However, looking at today’s speaker market, there are no fewer than hundreds of finished speaker brands, with varying quality and price. Even the speakers of the same brand and the same series often have a slightly higher sound quality and the price will become a geometric product. rise. This is precisely because since mankind invented electronic audio engineering, only speakers have the slowest progress and the weakest technology.
1. Preliminary understanding and judgment of speakers
For the initial understanding of a pair of speakers, you can basically use the steps of "viewing, weighing, knocking, and acknowledgment", that is, firstly viewing the craftsmanship, secondly weighing, thirdly knocking on the cabinet, and four identifying the nameplate. Next, Zifan will share with you these four ideas!
1. View the craft
Appearance craftsmanship is to judge the quality of the product from the first appearance of the speaker. The speakers made of natural logs are of course the best, but such good boxes are environmentally friendly and lack of resources, the processing technology is difficult, and the time is long. Factors, will never be too popular and used by low-end speakers, so the price of general wooden speakers must not be too low. Therefore, the common speakers are decorated with a thin layer of wood veneer on the surface of MDF medium density fiberboard: speakers with real wood veneer and exquisite exterior decoration, especially such as rosewood, bird's eye, rosewood, walnut, nannan, red oak And other rare veneers, the natural wood grain visual effect is excellent, and the hand feels smooth and comfortable. Especially the piano lacquer with symmetrical butterfly pattern real wood veneer is coated and polished in multiple layers, most of them can be regarded as high-end quality speakers, and there are very few counterfeit products. Boxes with PVC plastic skins are of the general market. Although they are exquisite in workmanship, they are best considered low-to-medium-grade goods. Although the boxes decorated with this paper veneer look extremely, you should pay more attention to whether the leather joints on the back of the box body and the digging process of the speaker installation position are accurate. Counterfeit and inferior products generally don't pay attention to these details, so you can make a correct judgment with a little care.
2. Weigh the weight
Good speakers are mostly made of high-quality MDF particle boards with a size of 18-25mm, and high-end flagship speakers are made of super-heavy solid wood such as red sandalwood and yellow grapefruit or multi-layer composite plywood, so the weight is very amazing. Often the net weight of a pair of speakers is up to fifty or sixty kilograms. Most of the mid-to-low-end and large-scale goods use soft-textured particleboard, and the counterfeit and inferior products use inferior paper rubber sheets, so the weight is generally lighter. There is often a saying in the audio industry that "experts look at quality and laymen weigh weight". Heavy speakers are definitely better than light ones. But be wary of unscrupulous businesses pouring sand and gravel cement at the bottom of the sound body to increase weight to deceive consumers.
It should be noted that some wooden speaker products that use curved box design. Although the curved box looks good and is beneficial to acoustic design, due to the needs of processing technology, the wood used in these boxes is often not as solid as the pure square structure. The product is strong. This is quite embarrassing.
3. Knock on the box
Knock the top, bottom, left, and right baffles of the box with your knuckles. All sides of the box make a solid and slight crisp sound. It feels that the texture of the plate is hard and thick, and there are many reinforcing ribs inside. The box structure is reasonable and strong. This kind of sound insulation and anti-standing wave measures and other effects. This kind of cabinet is costly and difficult to process, so there are few counterfeit and inferior products. If you hit the box with the knuckles to make a "puff, puff" empty sound, it means that the plate is too thin, the quality of the material is too poor, and the structure is unreasonable. And there is no sound-absorbing material or reinforcing ribs to maintain the interior, which leads to the formation of a large number of diffuse reflections and standing waves in the box. Buying this kind of speakers will never get a good playback effect.
4. 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, place of origin, and corresponding indicators. Brand-name speakers attach great importance to brand image and corporate reputation, so the nameplate marks are very standardized and exquisite, and various indicators, corporate names, and origins are all available. Some nameplates are even made of thin metal plated with 24K real gold, and the fonts on them are bumpy. The product not only has the factory date, production serial number, and even the matching serial number and the ID card in the box. For this kind of speakers, as long as the price is reasonable, they can generally be used with confidence.
Second, the technical indicators of speakers to judge the pros and cons
A technical indicator label is usually attached to the back of the finished speaker. The content is nothing more than the speaker's frequency range, sensitivity, carrying power and impedance. Among them, the sensitivity rate is the most important indicator of the speaker, which determines to a large extent what kind of power amplifier the box should be equipped with, how much power is needed to push and so on. The sensitivity of most listening-grade home speakers is between 86-92dB. For the same power amplifier, at the same volume, the higher the sensitivity, the louder the sound, and the higher the power requirements and requirements of the power amplifier. low. This is what people often say that this pair of speakers is easier to push.
Many professional speakers used in commercial OK halls have a sensitivity of over 100dB. No wonder many people feel that when they go to OK halls to sing karaoke, the sound is very beautiful, and they can get a lot of volume without any effort. But don’t think that the higher the sensitivity, the better. In fact, speakers with a sensitivity of more than 92dB are lighter and thinner metal cones, PP cones, etc., which will damage the control of the power driving speakers, resulting in thinner sound quality. It is pretty, exaggerated, and tough. It lacks a lot of music details and flavor, and is not suitable for Hi-Fi listening. Many brand-name speakers with thick, soft sound and full of musical flavors usually have relatively low sensitivity. Such speakers are often extremely difficult to serve and require a giant power amplifier with a large output current to work in the ideal linear region. The price will never be small.
Most 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 increased cost of the amplifiers is not just a little bit.
The other most important indicator is the frequency range. For example, the frequency range of a speaker box is 60Hz～20KHz±2.5dB, and 60Hz represents the extension value 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 value that the speaker can achieve. The higher the number, the better the audio characteristics. The suffix ±2.5dB indicates the magnitude of the distortion in the above-mentioned frequency range. The smaller the distortion, the flatter the frequency response curve. Some speakers are marked with a distortion degree of ±3dB, and their frequency range should become wider. Some speakers do not indicate this index, the frequency extension range will become very wide. For example, if the No. 1 compass box does not indicate that the distortion is controlled within plus or minus 2.5 decibels, the frequency range can be marked as 40Hz～23KHz. It should be pointed out that it is meaningless not to mark the frequency range of the distortion degree. If the manufacturer knowingly commits the crime, it can only be suspected of having bad intentions and deliberately deceiving consumers. At the same time, it also shows that the speaker indicators are not standardized, and the manufacturer lacks confidence in their products, and it is difficult for people to buy with confidence.
Carrying power is a reference index of speakers. It is expressed in watts. This index does not indicate the quality of the speakers, but only provides a reference for the selection of power amplifiers: for example, the carrying 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 an output power of at least 10W, but do not use an amplifier greater than 200W for full power output. Otherwise, there may be concerns about burning the box. Generally speaking, home speakers will never have the fear of being unable to push it, only whether it is pushed well or pushed well or not. The carrying power of less than 200 watts is much more than the use of ordinary households, so do not deliberately pursue too high. .
Another indicator of the speaker is the impedance value, which is generally 8Ω as its nominal value. The impedance value of most two-way bookshelf boxes is 8Ω, and the multi-unit multi-frequency floor-standing speakers also have 6Ω and 4Ω. The smaller the impedance value, the greater the current that needs to be driven, and the required power amplifier power is correspondingly higher. In my opinion, it is better to choose a better amplifier with 8Ω impedance for home speakers.
Third, the sound speakers are good speakers
Good speakers have very low distortion. So no matter the volume, it will make you sound very ears. Even if the volume is turned to full power, the speakers burst into earth-shattering, low-frequency rolling like thunder in midsummer, it will only make you feel close to the natural lifelike or even terrifying shock, but it will never make you escape the sound .
Generally speaking, speakers with thin sound, colder and harder sound, and "fast" speakers are not tolerable. It is certain that they are all caused by the thin sound of the cabinet, poor sound absorption processing, over-simplification of the crossover, and low-grade speakers. Naturally, it is not a good speaker. A good speaker is very durable. It can not only retain the guests, but the longer the listening time and the more familiar it is, the more the sound will be heard. No wonder so many audio enthusiasts are so obsessed with it.
Fourth, a good speaker can accurately locate the sound image
A good speaker can accurately reproduce the hierarchical sound field positioning. Even if you are not an enthusiast, you can still hear the sounds of various musical instruments from different positions such as the front, back, left, and right sides of the virtual stage in front of you under the guidance of experts, but by no means It's just a mixed melody of various sounds from two point sound sources of speakers. Better speakers, listen in a professional audition room with strict acoustic treatment and a moderate size. You can even feel the unique spatial and liveness of the music concert!
to sum up
After organizing and sharing so much, Zifan is really confused because some places are too specialized. For ordinary users or consumers, the above methods are very unrealistic. After all, they are all now. In the Internet age, who would buy a speaker and go to a physical store? At least I don't know Zifan, so Zifan will give you the easiest, most direct and violent tips for choosing speakers. First of all, you must choose a well-known brand that is made of wood and has an exquisite appearance according to your budget.