【 Weak current College 】 ignored home theater wiring

Now we have home theater is familiar, almost every urban family with your own home theater, there are also some low-end to high-end. While in the process of configuring home theater, many consumers are walking into a common misconception is that the home theater is actually a screen TV plus a set of advanced phonograph and the corresponding power amplifier, so these accessories is our choice of the most attention. Although this view are not completely wrong, but it ignores another important aspects — wiring.

For home theater, all of these video and audio equipment is not a simple combinations and permutations, but rather an audiovisual work is the overall layout of the audiovisual space and various audio system the combined effect of systems engineering. To a home theater display in the living room, both need to make the entire home theater and home environment mutual match, but also allows these devices to play the maximum of effect, it must first consider the movie's wiring, preferably in the housing before have answers. So what have home theater wiring and need to be aware of? and how different environment? here will solve these mysteries.

Elementary: a rainy day

Maybe a lot of friends have such experience, when a friend's house party, find someone else's home cinema not only effective, but also and ornament can also be a good match, can't find a trace of silk and wire connections. Then looking at your own home theater, audio connector on the back of many, have a significant impact on the entire theater. Even more incredible is that although its own complete set of equipment than a friend's House but upscale, but results are not satisfactory, it is buy fake and shoddy products? of course not, this is because you do not pay attention to the consequences of wiring, cabling for a home theater, how important it is.

For cinema distribution, the best time is before the renovation. Depending on the living environment, which is expected to be in a position to complete the installation of audio-visual equipment, design of good speakers of a substantial, select suitable wire, hidden power outlet, preconfiguration mounting holes, etc. The decoration of the wire embedding, we commonly referred to as "embedded", decorated after you can follow the design before purchase and display sound box, then the entire route is more convenient and perfect. But not every household will be considered to be so thoughtful, most families in home theater when decoration, not possible for this refurbished, these families, the need to solve the problem is: how should an existing device to play the best effect?

Theater wiring first need to resolve the first question is, how the living room or a room in any one place theater, design speaker placed in position with a view to the best effect. The next step is to design a good speaker, decide the location of the routing, line of trend and export, how many wires laid and the length of the wire. Once again is in accordance with their own plan to configure the equipment, determine what standard wire laying. The following is a response to these issues.

Environment: local conditions

To have the sound play to best effect, space conditions, equipment collocation, speaker set-up, and fine tune, and so on four counts of the user. While the speaker set-up is not necessary to spend money, but also allows the sound to play out the best way, some people say that speaker set-up in home theater in occupies 50% of the importance, I believe that is not too much, as long as we own experiment, it will slowly realize. Some theater enthusiasts know that the sound quality is good or bad and space, speaker set-up, listening position are closely related, the key is to find the best interactive. For ordinary consumers to distinguish which adjusts itself subtle differences is very difficult, we'll explain some of the practical approach. Need to remember that first establishedthe speaker set-up, the next step is to determine the routing.

Main speaker set-up, the most common is three a seven scale, that is, the length of the room are divided into three equal division, speaker at one-third of the length of the interval between the two speakers to room two-thirds of the length of 0.7 times, for a larger size, proportion uniform space can be balanced sound and the sound field and depth. The second is three percentage, length of the room are divided into three equal division, width also are divided into three equal division, speaker at length and width of the first partition on the point of intersection, and the first similar, different is the second main speaker between is narrow, you can according to their own living conditions of different length and width to be selected. Both methods are we in the wiring of the preferred, most families living room are suitable, but there are many family's sitting room layout are special, or audio-visual room layout theater, you can use the following methods.
Main speaker set-up directly affects the quality of performance

For special living room space, the author recommended screw pendulum, the main speakers in the room one third to one half the length between the two speakers, and then try to rely on the wall, two speakers of inward projection angle is greater than 45 °. Listening position to the intersection of the projection of intersection to 1 m after 0.5. If the living space is smaller, or audio-visual room arrangement of cinema, you can put method, the master of regular sound box to leave the back wall with at least 1 meter above the side wall, and also to have 0.5 meters above the sea level, the two main speaker and the listening position to form an equilateral triangle, the speaker of the projection angle is greater than the inside of 45 °, the formation of a triangle can be, we can adjust the size difference.

Thus, different cinema environment speaker set-up have different requirements. This also shows that many consumers for different wiring space, in a pot-side approach is erroneous. Established the speaker set-up, we can thus determine the lines where opening should be, how should the trend line. Then there is the wiring, follow the line category, General cinema can be divided in videos laid wire cables, audio cables and speaker line three categoriesCoupled with the power cord, following introduction of the classification.

Speaker cables: priority

Speaker cord is theater of wiring. General home theater speaker are adopting ways 5.1 channel, several speakers placed down, go open wire seems gibberish, what's more, if the living room or audio-visual room large enough, is equipped with professional devices and even some home decorating 7.1 channel cinema, where speaker line layout is much more complicated. But in a room decorated embedded line, wire to select No, substantial and unscientific, will affect the final sound effects.

The main body of the loudspeaker as a theater, the set-up of the importance and methods, and wiring of principles already stated above, will not be repeated here, we focus on several other speakers. Most of the families of the amplifier and drive are located below the TV, and configure the landing or Bookshelf speaker as the main speaker, as a result of the speaker cables to the installed sound when placement. If the amplifier and drive location of your TV. You will need to reset the lines in the layout, the layout, audio/video cables are laid in advance, the drive and the TV, amplifier and the connection between the TV also embedded in advance. The low bass sound for non-directional, placed in the PA wire connection next to you directly, if distant, depending on the situation by dark lines.

Then there is the surround speakers, 5.1 channel cinema has two surround speakers and 7.1 channel cinema surround sound up to four. In either type of cinema, the speaker is used to play the movie, the main purpose is to reproduce the film surround sound effect, a feeling of being there, so surround speaker wiring become particularly important. Wrapping box location according to the specific situation of the sofa wall, there are two ways.

The first is linked to the wall, will wrap box hanging on either side of the wall in the sofa, at which point you need to be aware of the main speaker height should be sitting ear height, installing wall surround speakers on the ear than 60 to 90 cm high, the effect is too high, too low to meet easily, so the wiring opening height to match; the second is the ground-mounted bracket, placed directly on either side of the sofa, the wiring of openings based on the circumstances, in short, try to avoid passing by. For best results, surround speakers should be the primary speaker form rectangle, of course, specific circumstances in a slightly trapezoidal.

Because of the speaker cable used to connect to a power amplifier and speaker system, speaker line of current signal in circulation than video cable and audio cable, which is great because of signal amplitude, the speaker cord is relatively high, these lines are often not shield, the key is to reduce their resistance, use of or sectional area of stranded wires. Quality better audio line, mainly gold, silver, copper and other materials. Currently more popular is oxygen-free copper-only lanes, its electrical conductivity, resistivity, import line-metallic carbon content is high, but the price is too expensive. The General standard of audio equipment, no need for the pursuit of high quality wire rod, so long as the use of General section larger point of copper core signal cable.

Video cable and audio cable articles

Video cables are AV cable, S-terminal line, color line, VGA cable, DVI cable, HDMI cable several to choose from, considering that now uses and future upgrades, and picture effects, etc., I propose a DVI cable, HDMI cable, both of which are digital transmission, the HDMI cable is the future of digital signal interface development trend. Color line is the best in the analog signal of the video lines, if the TV has no DVI and HDMI interface, you can consider, taking into account and are connected to the computer, or multiple embedded a VGA cable.

Arrangement of video lines, generally at least three lines, including HDMI cable, color line and DVI cables. Although popular in digital transmission, analog line now has a feeling of being eliminated, but the color line is currently the best in analog lines, and it supports high definition standards, in 5 to 10 years there is a big space for development. VGA cable is a little belong to the "chicken", the current mainstream video cards are configured with a DVI interface, if we think not reassuring, VGA or plus. No matter which type of video cable, it is recommended that the video cable from the ground or the walls of a suitable position openings, because like chromatic aberration and DVI video cable is very rough, exposed to the outside affect beauty.

Compared to the speaker cable, audio cable wiring is relatively simple. Audio line is used to connect to the audio source device and power amplifier wiring basics, regardless, because the audio source device and power amplifier usually put together, later configuration. Wire, audio cable, coaxial cable and fiber-optic cable, audio cable is often divided into two, two-channel around, using Lotus head; coaxial cable for transferring the multichannel signal, the signal output is large with the connector and cable are slightly higher than ordinary audio line; fiber-optic cable or coarse for multi-channel signal transmission, and coaxial lines of transmission carrier, then two lines are used to connect a DVD player and amplifier.

Power articles and notes

Power on the movie sound effects also can't ignore that many audio junkie habits that power is the "root of all evil", so you cansee its importance. Determine the approximate placing audio visual equipment, will be reserved after the location of a sufficient number of wall sockets. If the audio device power consumption is relatively high, taking into account the direct way from the meter case lira for its dedicated power supply, which would effectively reduce the other electrical appliances in use on it. If you have already completed the renovation of the user, as far as possible all power plug directly into a wall outlet, it is best not to do not use a power strip, even if you want to use, you should select the quality high, low quality power strip on the impact of the sound quality is considerable. If you are enthusiasts, socket number isn't enough, consider using a dedicated power supply filter, they are able to filter out the commercial power of impurities and noise.

Last remind everyone in wiring needs to pay attention to details. We have seen from the front, while routingVarious types of lines, to avoid confusion, in the embedded thread is marked to install is to distinguish which routes, respectively, to which the device or what box. And in embedding, whether in the floor plane hang or wall chisels Groove, with plastic casing or huangla tube will line set, instead of directly sealed with cement.

Many people in the embedded, wiring length is the length according to the actual alignment, which led to the final in cinema installation, find the length of the line, so in General, when you need to be embedded in the PA Office to reserve 50 cm to 1 metre wall around the line set aside for about 20 cm, with floor around the bracket from the ground to set aside about 2 meters, stay a little bit does not matter, in short they might encounter.