Knowledge about wiring of hydropower transformation home theater

The line connection of the home theater is centered on the AV Power Amplifier. Its input end is connected to signal sources such as DVDs, CDs, and satellite receivers through a signal line. Its output end is connected to speakers, televisions, and projectors.

Currently, the speaker system of the home theater system is generally dominated by 5.1. The connection diagram is as follows:

As shown in, the two main speakers of the 5.1 speaker, one central speaker, and the superwoofer speaker are all placed in the front of the audio-visual space, they are generally connected to the corresponding terminal of the power amplifier through the active speaker connection line, without pre-wiring. The surround speaker is located at the back of the audio-visual space. Generally, it is located at the right and right sides of the wall on the front of the TV wall. You need to consider the surround sound box line during decoration. Therefore, the cabling of the home theater is actually the wiring of two surround speakers.

It is generally recommended to deploy the line around the speaker.

Note:

1. on the TV wall behind the power amplifier and on the sides of the sofa, place a wall around the location of the Speaker. Each speaker has a socket. The front is surrounded by four digits, and the rear is surrounded by two digits. Theoretically, the more links from the power amplifier to the speaker, the more the effect will be reduced. Because there are more links, the signal attenuation and distortion will also increase. However, in the AV system, the deterioration of sound quality in sockets, plug-ins, and connection lines is far from serious in pure music systems. In particular, AV systems used in general homes do not have to worry about this. After adding a socket, You can effectively protect the dark line, especially the end Of the surround speaker. Because most families are decorated first and then equipped with a home theater. During the decoration and wiring, there is no decision on what kind of surround speaker will be used in the future. If the outlet is not added, it is difficult to determine the position of the outlet and how many wires are reserved. After adding a socket, you only need to connect the purchased surround speaker and outlet with the active speaker connection line, and there is more room for adjustment of the speaker placement)

2. From the four-digit speaker outlet to the two-digit speaker outlet on the left and right sides of the rear side, respectively, discharge the surround audio cable. The length of the sound boxes on both sides must be basically the same, and the length should be as short as possible to minimize the signal loss and balance the left and right sound channels. It is generally recommended to arrange the pipe line, that is, the pipe line is discharged from the midpoint of the TV wall along the midline backward, to the back of the wall and then to the left and right sides.

3. The height of the surround speaker outlet is generally 30-35 cm from the floor.

4. Placement of surround speakers. A common problem is that the speaker is hung high in the corner. We do not recommend that you do this because it will seriously damage the sound reproduction and positioning. The correct placement of the surround speaker should be in the special term "Emperor bit" fever, the best listening position, the emperor bit and the front of the two main speakers at three points into an equi triangle relationship) the two sides are placed slightly behind and symmetric, and the distance between the left and right is about the same as that between the two main speakers; the height is 75 to 100 cm from the center of the speaker on the floor ), generally, it should be the ears of the person sitting on the sofa. We recommend the placement of speakers. One is hanging on the wall. You can pre-embed a suitable pendant During the decoration, or fix it with expanded silk. The other is to use a tripod. The third is embedded, in the appropriate position to dig the wall hole is generally 30-width 40-height 20-depth), install the speaker panel, for the future use of the speaker around a home. This method not only saves space, but also effectively protects the speaker without affecting the audio effect. It is worth considering.

5. The selection of the sound box line, generally use 99.99%-high purity 4N, that is, purity) Oxygen Free copper wire. For surround speakers, it is unnecessary to use high-price and high-quality sound boxes.

The audio transmission line transmits the audio signal from the audio source device to the Power Amplifier. the purple line in the figure shows the audio frequency line. Starting from the integrated distribution box or the AV distributor in the living room, connect to the position of the embedded power amplifier hidden box.

The audio cable is a dual-strand shielded coaxial cable.

Appendix: 7.1 speaker system configuration Diagram

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