Make your own cinema cabling well

There are more and more equipment in the home theater, and some are no longer simply composed of a large color TV and a set of high-definition audios. If you place all kinds of lines in one place at will, it will undoubtedly compromise the entire family environment and easily lead to unnecessary accidents due to bumps.

For users who are preparing for decoration, which ones should be preinstalled for cabling and which ones can be laid out? In an interview with reporters, Zhang Zhiqiang, an engineer of Beijing languang audio and video Technology Co., Ltd., gave a detailed introduction to the video lines, audio lines, and audio boxes in the home theater, and gave suggestions on wire purchasing.

Prepare video lines in advance

As the name suggests, a video line is used to transmit video signals. It is used to connect traditional CRT Color TV sets, flat-panel color TV sets, projectors, DVD machines, and HTPC (Home Entertainment Media Center. If you want the home audio and video system to support all the display devices and media players during the decoration, you can deploy three video lines in advance: the color difference line for transmitting analog signals, the vgaline, And the dviline for transmitting digital signals.

Currently, the main video lines connected to various audio and video devices include the AV line, s terminal line, color difference line, vgaline, and DVI line. Among them, the color difference line and the vgaline are the video lines with better analog signal transmission. These interfaces are available for new DVD machines, new color TVs, and home projectors. VGA interfaces are most common in computers, almost all flat-panel color TVs and projectors also have VGA interfaces. Dvi uses non-compression technology to transmit all digital signals, featuring high speed and good signal quality. Currently, flat-panel color TV sets, projectors, HTPC (Home Entertainment Media Center), and many other manufacturers support digital video signal lines.

Zhang Zhiqiang said that if you only use a color TV as a display device, you do not need to consider deploying a video line during the decoration. However, if you want to connect various devices, the distance is too far. It is best to deploy these three video lines. For example, if the computer is in the study room and you want to use the living room to play videos on the computer and other program content, deploying vga will make this idea a reality. The video lines are relatively rough and it is difficult to expose them to the outside. At the same time, because of the large amount of signal loaded by the color difference line and the DVI line, there is a high requirement on the quality of the wire. People should pay attention to the quality of the wire when purchasing it.

You can configure the audio cable later.

The audio cable is used to connect the audio source device and the Power Amplifier. Because the two are often placed together, the wire is short and can be configured later. With the rise of wireless microphones, if it is not for special reasons, you can also leave the phone line alone when wiring.

Zhang Zhiqiang said: at present, sound lines with good quality on the market are mainly made of gold-plated, silver-plated, and oxygen-free copper. In addition, imported cables with a high amount of non-metallic carbon are mostly used, however, it is expensive and generally requires several hundred yuan. For general popular audio equipment, there is no need to deliberately pursue the high quality of the wire, as long as the general section of the larger copper core signal line can be used. For good home theater audio equipment, you can consider the use of high-quality audio lines, such as in the DVD and AC-3 decoder have optical fiber output, input interface, if the use of optical fiber transmission line, it can play a significant role in improving the tone.

The audio box line is the focus of cabling

A set of 5.1-channel audio equipment has as many as six speakers. During room decoration, the audio cable of the home theater is the focus of wiring. Because the opening line is messy, the placement is not scientific, and the listening effect is also affected.

When a home theater speaker is used to play a movie, the main purpose is to reproduce the surround sound effect of the movie, which gives people an immersive feeling. In the case of a sound box, color TV and audio should be placed scientifically. Note that the height of the main speaker should be the same as that of the sitting human ears. The surround speaker installed on the wall on both sides of the sofa is about 60-90 cm higher than that of the human ears. The low speaker has no direction due to the low bass, it is usually placed next to the power amplifier, without the need to overlay the hidden line.

The sound box line is used to connect the power amplifier and the speaker. The current signal in circulation is much greater than that in the video line and audio frequency line. Because of the large signal range, the material requirements of the sound box line are also high, for example, you need to select a wire with a large cross-sectional area or multiple stranded wires. At present, the market is more popular with the oxygen-free copper special line, which has good conductivity and low resistivity. The sound color will increase a lot during Sound Replay.

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