First of all, attention should be paid to the acoustic characteristics of the indoor space to ensure that the acoustic performance of the left and right sides of the speaker is symmetrical, and the sound absorption and reflection characteristics of the left and right sides are consistent. For example, on both sides of a room is a wall, we can place the sound in a bilaterally symmetrical position, but this does not guarantee the consistency of its acoustic characteristics. For example, if one side of the room is a brick wall and one side is a glass window, if the window is closed, the acoustic performance of the two sides is similar; but if one side of the window is opened, the acoustic characteristics of the two sides are asymmetrical, and the window is opened. One side will have a lost voice.
Similarly, if one side of the room is a brick wall and one side is a wooden wall, the acoustic characteristics are asymmetrical, and there will be a loss of sound on the side of the window. Similarly, if one side of the room is a brick wall and one side is a wooden wall, the sound absorption characteristics of the wooden wall are stronger, and the effect is similar when opening the window. At this time, the sound absorption coefficient of one side of the brick wall should be increased, and the sound absorbing material can be laid on the brick wall to balance the acoustic characteristics of the two sides as much as possible.
The main speaker plays the main music and the picture effect sound signal, which is used to highlight the main atmosphere of the picture and the background sound effect of the scene. The left and right speakers with the same characteristics such as rated power, frequency response bandwidth and smoothness should be selected. Keep the acoustic characteristics consistent when placed, so that the left and right main channels are well balanced and matched.
The center speaker is used to transmit the dialogue of the character. Its rated power, bandwidth response bandwidth, smoothness and other characteristics should be consistent with the main speaker, and its rated power can be slightly smaller than the main speaker. The center speaker can be placed above or below the TV. Because it is close to the TV, the center speaker must be anti-magnetic, otherwise the picture tube will be magnetized. The front speakers should remain in line with the center speaker, or before it, never place the front speakers behind the center speakers.
The surround sound box provides an ambient sound to create a uniformly diffused closed surround sound field with a narrow band around the speaker and a lower power rating than the main speakers. Depending on the conditions of the indoor space, the surround sound box can be placed in a variety of ways, such as being placed in front of the listener, behind the side, slightly above the head of the listener, and the two surround sound boxes must be placed symmetrically. The common method is that both speakers are facing the listener, or both speakers are facing the wall, passing through the reflection of the wall to the listener, or both speakers are facing the ceiling, and the reflection from the ceiling is transmitted to the listener. .
Subwoofers are used to create powerful bass effects for unique sound effects such as dull cannons, explosions, and more. A subwoofer can usually be placed between the front left and center speakers.
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