Tips for selecting speakers

With the increasingly important role of entertainment functions in computers, a good sound system is very important when buying a computer. However, a good computer audio system is not enough to rely on the sound card. You must have a suitable set of speakers to match it to achieve good results. Some people may say, "I listen with my ears? I will buy it when I am satisfied."

It is true that listening is very important when buying speakers. However, the computer market is different from the speaker stores. The computer market has a large flow of people, and there is no special listening room. In such an environment, your hearing depends on your hearing. It is difficult to distinguish between good and bad speakers. Therefore, we may choose to buy computer speakers through three methods: seeing, hearing, and hand model.

See

For the purchase of computer speakers, we first need to look through the eyes, and this look includes two aspects: look at the technical performance indicators, look at the appearance of the speaker.

1. Technical performance index

Power: It determines the maximum sound intensity that the speaker can emit. There are currently two ways to label speaker power: rated power and peak power. The former refers to the power value that can work normally for a long time; the latter refers to the maximum value that can be reached in an instant. Although the power is greater, the better, but it should be within the limits. Generally, you should buy according to the size of the room, such as 20 square In a room with a height of 2 meters, a speaker with a power of 2 × 30W is sufficient.

Distortion: Distortion is a very important indicator in the purchase of speakers, generally expressed as a percentage, the smaller the better. It directly affects the degree of restoration of sound quality and timbre.

Frequency range: It refers to the range between the lowest effective playback frequency and the highest effective playback frequency of the speaker. The unit is Hertz (Hz). Generally speaking, the high frequency part of the current speaker is higher, and the low frequency is slightly inferior. The requirements are relatively high, it is recommended to match a subwoofer.

Frequency response: It refers to the change in the relationship between the sound pressure and phase generated by the speaker and the frequency, in decibels (dB). The smaller the decibel value, the lower the distortion and the higher the performance.

Signal-to-noise ratio: As with sound cards, the signal-to-noise ratio is also a very important indicator in the purchase of speakers. If the signal-to-noise ratio is too low, the noise is serious and will seriously affect the sound quality. Generally speaking, the signal-to-noise ratio of the speaker cannot be lower than 80 dB, and the signal-to-noise ratio of the subwoofer cannot be lower than 70 dB.

2. The appearance quality of the speaker

For the majority of ordinary users, this is a more intuitive judgment method than technical performance indicators.

Box material: The current speaker materials are divided into plastic and wood. At first, it was generally believed that wooden speakers were better than plastic speakers, but this idea is currently not perfect. The sound quality of some well-made plastic speakers is far better than the rough-made wooden speakers. Therefore, when selecting speakers, weighing components is a very important step. If a large wooden speaker is very light, then its performance will not be better.

Diaphragm material: The diaphragm material refers to the manufacturing material of the speaker diaphragm. Among them, the diaphragm material of the tweeter is plastic film, silk film and metal film; the diaphragm material of the woofer is paper basin, polyethylene basin, wool basin, aluminum magnesium alloy basin, bulletproof cloth basin. These materials have different performances, and the prices are high and low. It is difficult to say who is superior and who is inferior. The principle that should be mastered when buying is "Non-hard, not soft, rather than soft".

Speaker unit caliber: The speaker unit caliber (bass part) is generally between 2 and 6 inches. Within this range, the larger the caliber, the higher the sensitivity and the better the low frequency response.

The appearance of the speaker: Many current computer speakers have got rid of the traditional cuboid shape, and have adopted some unique, more beautiful and fashionable shapes. There is no difference between appearance and styling. The purchase is entirely the user ’s own personal preference, but it should be pointed out that the essence of the speaker is still its sound quality. If the sound quality is not good, then the beautiful appearance is useless. .

Ear listening

1. Preparation stage

Before on-site audiovisual, some preparations should be made first, and several targeted CDs should be selected for testing.

Suggestions are as follows: testing the treble is recommended to use violin music or erhu music; testing the midrange (vocal) can choose a CD of folk songs, recommend that you can use "Cai Qin", this CD is high and bright, sullen, very suitable for midrange vocal testing ; Cello music should be used as a bass test; it is more appropriate to use fast-paced disco music for dynamic testing.

After the test CD is selected, the CD should be listened to several times before the comparison can be identified.
2. On-site audiovisual

After arriving at the scene, you can take out your CD for on-site testing after the initial selection of your favorite speakers. Do n’t turn the volume to the maximum when listening, basically turn it to two-thirds without distortion. Too. Of course, the specific feelings at the scene cannot be expressed in words, and users must use their ears to identify them. At the same time, it should be noted that different sound cards are used, and the effects are also different. Therefore, when listening to the sound, you should also understand what sound card is provided by the merchant in order to locate it correctly.

Hand touch

In fact, "hand touching" is not a separate purchase step, it is carried out in conjunction with "seeing" and "ear listening".

First, you should weigh the weight of the speaker by hand. A good speaker should be very heavy.

Second, we can understand the workmanship of the speakers by touching the speakers. Plastic speakers should touch whether the seams of the stamping mold are tight and polished; if it is a wooden speaker (many are not wood, but MDF used), you should touch the surface to see if the skin is smooth. Is there any protrusion at the seam? Although these will not affect the quality of the speaker, but it represents the attitude and technological level of the manufacturer.

Third, we should touch the speakers with our hands during the listening test, especially during the dynamic test. Some speakers will vibrate at fast rhythm and high volume, resulting in blurry sounds, so if you feel the cabinet If the vibration is very strong, do not buy this speaker.

It should be pointed out that although the sound card and the speaker are two parts, they are indeed a whole. Therefore, they must be considered at the same time when purchasing, and the price must also be uniform, and not biased. At the same time, we must pay attention to the matching of the output interface of the sound card and the input interface of the speaker. Do not buy the 5.1 speaker before you realize that the sound card does not support 5.1 output. var check_allow = "/d/Api/iscantalk.html"; var add_url = '/ d / article / write /'; function CheckLogin () {now_uid = ''; var ElecfansApi_checklogin = '/ webapi / passport / checklogin'; var logout_url = "{: U ('Login / logout')}"; var logout_url = 'http://bbs.elecfans.com/member.php?mod=logging&action=logout&refer=front'; $ .get (ElecfansApi_checklogin, function (data, textStatus) {if (data! = "") {EchoLoginInfo (data); CheckEmailInfo (data); data = $ .parseJSON (data); now_uid = data.uid; / * var login_content = 'write an article