How to choose the right speaker and amplifier

As is well known, as a speaker that converts an electrical signal into an acoustic signal so that the ear can hear the sound, it is the most important component of a home theater or stereo playback device, not only occupying a larger share of the total investment ratio, It is also the most difficult to purchase in audio and AV equipment. The reason is that the brand of the speaker is thousands of people, it seems that people are at a loss, and it is even more difficult to start. However, the speaker is by no means impossible to purchase. It is possible to judge the pros and cons by playing music, and choose a good speaker that is satisfactory and reasonably priced. As the saying goes: "It is Deng, you have to pull out!" The speakers have to be put out to listen to the speakers! Here we mainly introduce the purchase of speakers in the stereo and stereo systems. As for the front main speakers, center speakers, surround sound boxes and subwoofers for home theater, although there are other emphasis on the selection criteria, Still in line with the principle that any speaker that can reproduce good music will naturally perform well in replaying movie music.

First, the tone is naturally balanced

First of all, the sound reproduction of the speakers should be true. The vocal and instrumental sounds replayed should be as close as possible to the original sound and not too distorted. In this respect, perhaps the main criterion is that there should be a precise pitch balance. The sound you hear should be smooth and silent (should remember that most speakers will always drop in low frequency response), the strongest and weakest sounds (peaks and valleys) that are not heard. The mid-range and treble should not be too loud or squatting and cannot be opened. You can find some instrumental music (such as piano music) with a wide frequency range for recording. Pay attention to the changes in the tone when listening to low, medium and high scales. Speakers in the speaker cabinet are well-coordinated, and the cabinets and crossover networks are well designed and have good scattering characteristics. The sound effects are much better than those with some defective designs. For example, when you can always hear that the tweeter seems to be playing alone, you can be sure that this speaker has some problems. Welcome to China Home Theater Network

Second, the sound characteristics

Although the overall sound characteristics of the speakers are crucial, good speakers should also perform well in the following special occasions:

Frequency balance: You can listen to the sounds of different frequency bands in turn. The bass you hear should be compact, clear, and the tone is exact, not creaking, not dragging or confusing; while the midrange as the main part of the music is more important, the vocals and instrumental sounds should be natural, with details. Do not over-sound or muffle, nor too bright or too light, high-pitched should be open, airy and extensible, no screaming or fading.

Resolving power: Listen carefully to see if you can hear details in the music, such as the decline of arpeggios or piano sounds, the hall sounds in a concert hall or jazz club. If the details of the low level are not clear enough, the speaker lacks transparency. For true and satisfactory playback, the resolution at low levels is critical. This is also the difference between a good speaker and a lame speaker.

Transient response: The speaker should be able to reproduce transients in the music. The sound response when you just hit the string drum or just push the guitar is strong and sound, not to be "surprised", "excited" or "slow" and "slow". In addition, the natural fading sounds, such as the "tailing" of voices and voices, should gradually decay and should stop. Dynamic Range: Sound playback should be compared to low and high dynamics. Ideally, the speaker should be able to continuously reproduce from the lowest sound to the strongest orchestral field, without some inability to hear the silent part or the loud passage.

Sound image localization and sound field (stereo): Listen to the positioning of the sound image. Note that instrumental music or vocals are sent from the sound field of the space. The precondition is that the speakers have the correct position in the room. You can find some monophonic sound recordings to audition, and you can also focus on other performances of the speakers. The sound-located speakers will "disappear" in the sound field, so that the listener can't feel the beautiful melodious music from the pair of speakers in front. The music is coming, the singer seems to be standing in front. Somewhere in the middle position, it is screaming.

Scattering characteristics: Go to different locations in the room to listen. You can sit and stand to check the sound scattering in the vertical plane. At this point, the treble that is heard will inevitably change a lot. Some speakers have a "next position" that is limited to a narrow range, while some speakers provide good sound image localization over a wide range.

Third, acoustic dyeing

Some speakers have the drawback of "sounding" or sound reproduction, and they are imposed on the music being played back. Such as harsh sounds due to poor cabinet design, metal high-pitched sound, rough or uneven mid-range. If you can hear such a sound regardless of the type of recording, you can be sure that the speaker has added its inherent sound to the top of the playback music. Usually, it is better to miss some sounds during playback than to add some original sounds to the music. Some speakers intentionally add sound, such as aggravating some of the bass and making the treble brighter, although at first glance, such a speaker seems to be good, but after a long time, it will become bored and even fatigue, such a speaker will not Worth buying.

Fourth, the speaker's sound environment

If you listen to the speakers in an improperly placed audio store, you will most likely hear the full performance of the speakers. Because the speakers are very important in the room, even if you move the speakers a little centimeters forward or backward, This will cause a large change in the low frequency response of the speaker. When you place the speakers in a room that enhances or weakens the bass, the balance of the tones changes, or you can hear rich bass or no bass. Moreover, the speaker is not placed properly, and the sound of the sound image localization should not be available. It is not unfortunate that some audio stores have to place the speakers in rows and rows on the wall because of the small size of the store, so that the performance of the speakers cannot be fully utilized. What's more, even if the speakers are placed correctly in the store, they are still quite different from the listening environment in their home. Therefore, you should find the right place for the speaker at home, so that the speaker can fully display its power and show its talent. If you negotiate in advance, you can move the speaker home to try and listen before you buy it. It is best to leave it. If it is not suitable, return it or change it again. It is best.

5. Listen to familiar music.

Since the recording quality of CD recordings is very far-reaching, there are many times. Therefore, when you listen to and purchase speakers in the audio store, it is best to bring a few CDs that you usually read well. In this way, you can hear which ones are on the CD recording and which are held by the speakers. Because of the different levels of different sound recordings, some are stronger and weaker, so many different types of sound recordings must be used to try and listen more, in order to be able to compare the difference between the instrumental sound and the human voice and the real sound.

Six, pay attention to coordination and matching

The speakers also have to be coordinated and matched to the listening room, audio equipment and listening hobbies. If the room is small, it is not appropriate to have a large floor-standing speaker. Because it will make the room too loud and the bass will not be released. Conversely, if it is a large room, then using a pair of small speakers will feel the lack of sound and power.

The power amplifier that sells the speakers should be "powerful". The sensitivity of the speaker in dB is an indicator of this aspect. The higher the sensitivity, the louder the speaker will be when given the input power. However, sensitivity is only one aspect. The power output of the power amplifier, the size of the room, and how much volume you usually use to listen to music are also important factors. Generally speaking, when listening to music, the average output of the amplifier can be 10W, and for most home theaters, the amplifier can be 40W to 100W per channel (not counting the subwoofer channel). The power is enough.

As for the matching of speakers with other audio equipment, there is also a requirement for "door-to-door". If the original audio equipment is relatively high-grade, such as Hi-Fi audio equipment of 10,000 yuan or tens of thousands of dollars, then it is necessary and necessary to spend a few thousand or even 10,000 yuan to buy speakers. If the original audio equipment is only general equipment, then with high-end speakers can only be the dice to light - white effort.

Seven, should be heavy and not heavy

First of all, let's talk about the sound quality. Everyone knows that the bass is hard to find, so it should be more heavy and not heavy. It is better to be less. Too many basses with distortions seem to be very enjoyable for people who don't know how to do it, but the experts don't bother to look at them, because they will be tired and prone to fatigue. Therefore, such a speaker can not be bought.

Let me talk about the specific speakers. It should be borne in mind that the speakers are not the more expensive, the better, and the bigger the better, the better. Some small speakers that are carefully designed and made, because of the built-in high-quality speaker unit and device, the performance is more than some built-in. The high-end speakers of the low-end unit are better. Small speakers are similar to "point sound source", and the sound image positioning is more accurate, which is more suitable for use in small or small listening rooms.

In addition to the most common electric speakers, there are other types of speakers, each with its own characteristics, such as High-End flat-panel magnetic speakers, electrostatic speakers, band speakers and mixed-design speakers.

Eight, no hurry and would rather spend more time

Usually, a bite can't be eaten fat. It is even more difficult to pick a speaker, and it is almost impossible to determine the benefits of a pair of speakers within 3 to 5 minutes. It takes a lot of time to use a wide range of music to listen to as many different speakers as possible. It is both informative and increases the level of listening and commenting, which is good for choosing a good speaker. Bring a lady or invite a friend to listen, and it’s not a bad idea to come up with ideas, but you can’t listen to others without your own opinions.

Nine, compare at the same volume

Psychoacoustics shows that when people are listening to a speaker, most of them will mistakenly think that the louder speaker is a good speaker. Therefore, the test specifies that the comparison should be made at the same acoustic level. When listening to the audio store, you should also try to compare the sound level as much as possible. If necessary, you can even buy a sound pressure level meter to test. This kind of watch is a useful tool and will come in handy when debugging a complete set of speakers for home theater.

Ten, only buy it when you are obsessed

It is difficult to find a pair of bass feet, sound image positioning is good, and the sound reproduction effect is not bad, but it can still be done. I believe that according to the above terms, you will find such a speaker. The question is, is this really a speaker to buy? Is it a speaker that you will not regret it when you buy it? Have you used it for music for a long time? Be calm, keep in mind that only the speakers that really touch you, can excite you, let you listen to your heartbeat and make you fascinated, let you forget where the speakers are when listening to music and only have wonderful music. The fairy speaker is the speaker you should buy.

A good speaker is more than just a good sound reproduction. Its more important function is to pass on all the energy and enthusiasm in music and film music to your heart, so that you can fully experience and feel the joy of listening! You should buy such a pair of speakers!

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