Nowadays, many people like to buy home audio and video. With it, we can enjoy the shock of audiovisual feast at home. As an important part of home audio and video—audio, its sound quality plays a decisive role. However, in the face of the various audio brands on the market, how should we choose? Today, let Xiaobian take you to understand the speaker selection skills and speaker placement methods.
Speaker purchase skills
First, pay attention to whether the sound color of the speaker output is uniform. Since the sound source of multimedia music is mainly games and general music, the proportion of treble is relatively large, and the proportion of bass is relatively small.
Second, pay attention to the localization capability of the sound field. The ability of speaker positioning is directly related to the on-site effect of users playing games and watching DVD movies.
Third, attention should be paid to the dynamic amplification limit of the speaker frequency domain, that is, when the user increases the volume of the speaker and exceeds a certain limit, whether the speaker can still maintain a uniform and clear sound source signal amplification capability in the full range.
Fourth, pay special attention to whether the speaker cabinet has resonance. Generally speaking, a speaker with a thin cabinet or a plastic enclosure will resonate when outputting at a low frequency and high volume below 200 Hz. The presence of cabinet resonance will seriously affect the output sound quality, so users should try their best to choose speakers with wooden enclosures when choosing speakers.
Fifth, pay attention to whether the case is anti-magnetic. Since the display is very sensitive to the surrounding magnetic field, if the magnetic field of the speaker is large, the image on the screen will be affected, and even the life of the display will be reduced, so you must pay special attention when choosing.
Sixth, pay attention to the airtightness of the speaker cabinet. Because the better the airtightness of the speaker, the better the output sound quality. The airtightness inspection method is very simple. The user can put his hand outside the inverted hole of the speaker. If there is obvious air rushing out or sucking in, it means that the airtight performance of the speaker is good.
Speaker placement method
1. Center channel
The front center speaker is generally placed as close to the center of the image screen as possible. The center channel speaker has the greatest impact on the sound quality of the movie dialogue. In order to ensure that the dialogue is accurately positioned in the center of the screen and the sound is clear, a dedicated center channel should be used. Design a separate speaker, instead of using ordinary bookshelf speakers or speakers inside the TV to replace.
2. Left and right channel
The placement of these two speakers has a certain relationship with the position of the center channel speaker. In order to ensure the smoothness of the left and right movement of the sound image, they should be placed on both sides of the center channel speaker, and the three speakers should be kept at an equal distance from the position of the best listener in front of the screen. Generally speaking, the position of the center speaker should be set back a certain distance from the left and right speakers until the sound fields of the two can be completely combined to create a truly unified sound image positioning. The retreat distance is related to the size of the space, the listening position and the speakers used, and can be determined through experiments.
3. Surround channel
The placement of the loop line speakers should vary depending on the listening environment (room conditions) and the type of loop line speakers. For the left and right surround speakers, the sound diffusion should be more important than the directionality, which is conducive to creating richness. Surrounding atmosphere. When placing dipole speakers, two factors should be considered: resonance and self-attenuation. The best position for anti-resonance is at a height of 20% of the indoor space from the ceiling (or the ground) (for example, the indoor height is 2.5m, the best position is 50cm above and below). In order to make the frequency response smoother, a new device called a low-frequency "trap" (absorption of low-frequency audio) can be added to eliminate the reflections that cause the sound to decay.
After reading this article on speaker selection techniques and speaker placement methods, do you have a certain understanding of it? I hope it will help you.