Some engineers like to use solid concrete structure as the base of the speaker, which has a good effect and can firmly fix the speaker on the front wall. But the cost of this method is relatively high. The floating embedded installation structure shown below is also a good choice. In this structure, the speaker is first placed on the rubber spring, which isolates the vibration of the box from the room structure. The significance of this is that all sound radiation comes from the box, not from the vibration of the walls, floors and ceilings around the box.
Detail drawing of embedded installation structure. Among them, the concrete wall is a concrete wall, the sandbag is a sandbag, and the amplifier is from.
The shell removes the power amplifier from the back plate of the box, and the vibration isolator f2-8Hz, which is a vibration isolator with a frequency of 2-8Hz, is made of rubber.
The washer is a rubber spring, that is, a vibration isolator, which is fixed on the panel.
Wall means to fill the gap between the box and the wall with a panel, and the gap is 50-100 mm. The concrete structure on the right is a concrete structure wall with multiple layers.
Wall (wood, concrete and brick) is a multi-layer wall structure, including formwork, concrete and brick.
Fight against the inherent acoustic defects in the room
Compared with the room with free near-field speakers, in the control room with embedded speakers, the inherent acoustic defects of the room, that is, standing waves, are more likely to be excited. The standing wave is characterized by maximum sound pressure level on the wall. As a loudspeaker integrated with the wall, it has the inherent advantage of exciting indoor longitudinal standing waves. From this point of view, in order to overcome the adverse effects of standing waves, it is necessary to install a large number of low-frequency sound absorption structures on the side walls, especially on the back walls. Practice has proved that this is the most effective method.
The side wall and the back wall are sound-absorbing structures, and the front wall is hard.
abstract
A well-designed embedded installation structure can solve many problems in the process of sound playback and make the playback more accurate and true. Embedded installation can also minimize the diffraction effect caused by the edge of the speaker, eliminate the reflection of the back wall and increase the output effect of the speaker.
Rate, eliminate the front baffle effect. When the speaker is embedded, it is necessary to carry out corresponding sound absorption treatment on the back wall.