Best placement: two small speakers are placed on both sides, and the subwoofer is placed between the two small speakers.
2. 1 Audio consists of a woofer (commonly known as a subwoofer) and a pair of full-range speakers (commonly known as satellite speakers) with weak bass. Several 2. 1 speaker satellite boxes will be divided into two frequencies.
"2" in "2. 1" refers to the standard dual channel (stereo); ".1" in "2. 1" refers to the "bass" channel whose output is generally below 100Hz. Generally speaking, 2. 1 speakers belong to the middle and low-grade products of speakers (not necessarily).
The aperture size of the satellite box tweeter unit is usually 1 inch, the bass unit is 3 inches, and the subwoofer unit is 5 inches or even 6.5 inches at this level, which should be a better product.
Ii. 2. 1 audio placement position, angle, height and precautions
1, placement location
(1) The placement of speakers is also a matter of distance. For the 2. 1 system, only two speakers need to be placed in front of the listener, about two meters apart. The connecting line of two speakers serves as the base of the triangle, and the listener serves as the apex of the triangle. People and two speakers can form an equilateral triangle.
(2) It should be specially reminded that the two speakers should not be too close to the human ear. If it is too close, the human ear only hears the direct sound field from the speaker, and there is no reflection from the surrounding space objects. The mixing effect of this reflection is called interactive reverberation. Only by relying on these changes can we judge the surrounding environment, and the human ear feels more real about this sound. Without reverberation, the sound will sound dry, even after some reflection. If the distance is too close, the diffracted sound will be covered up.
(3) Another special reminder, pay attention to the fact that the two speakers must not be against the wall, because most of the speakers in the 2. 1 bookshelf are placed behind the inverter hole. If the speaker is close to the back wall, the sound wave in the inverter hole cannot be completely released, and the sound field effect will be greatly reduced. 2. 1 The regular triangle formed by the bookshelf speaker and the listener can be large or small except for the same angle. If the room is small and the power of the rear stage of the speaker is not large, the triangle can be appropriately smaller; The regular triangle can be enlarged when the room is large and the back force is large.
2. Placement angle
The left and right speakers should be located in the center of the audience at an angle of 45 to 60 degrees. Generally speaking, it is best for the left and right speakers to form an included angle of about 45 with the human ear. If the speaker is too close to the listener, the range positioning is not accurate enough, and there is a phase difference between the high and low units, so the sound cannot be synchronized. If the distance is too far, the sound field will narrow and lose the sense of space and presence.
Combined with practical use. If it is mainly used to enjoy movies, it is suggested that the angle should be around 45, which is the angle used to monitor the film soundtrack mixing. If you mainly listen to music, you can get a larger listening angle by widening the distance between the left and right speakers to about 60.
3. Placement height
Another important question is which plane the speaker should be placed on. If the height of the speaker is not ideal, it will greatly affect the listening experience. For 2. 1 bookcase speakers, especially some high-end bookcase speakers, it is strongly recommended that you use the speaker bracket, which not only can obtain excellent sound quality, but also is very convenient for height adjustment.
As for the choice of location, according to a relatively consistent point of view, the tweeter unit of the bookshelf speaker is basically flush with the human ear. Note, however, that because people's ears have different sensitivity and positioning sense to sound, the performance of speakers is also different, so we can make fine adjustments in this principle to conform to our listening habits and give full play to the performance of speakers.
Generally speaking, the regular triangle placement method can keep the distance between the listener and the speaker at about two meters. Its biggest advantage is that it can reduce the excessive interference of the reflection of the wall on the speaker, and obtain a good sense of positioning and a wide and deep sound stage. If you want to simply enjoy music, then the triangular placement of 2. 1 speakers is undoubtedly the most direct and clear way to hear the most details.
3. Two points that should be paid attention to when installing the loudspeaker system
(1) The subwoofer should be kept at an equal distance from the wall. For example, if the room is 4 meters wide, it is best not to put the subwoofer 2 meters away from the wall on each side.
(2) Don't put the speaker near the corner or at the same distance from the side wall and the back wall, and the relationship between the speaker and the wall is not equal. For example, the distance to the side wall or back wall 1/3, 1/5 or 2/5. Because the low-frequency cross product is enhanced at this time, the bass will be richer and rounder. In short, the position of the bass box should make the bass sound rich, round, smooth and natural.