Home theater system purchase comprehensive analysis, help you to form a perfect private video room

[Home Theater Network HDAV.com.cn] For those who have independent dedicated audio-visual rooms, it is undoubtedly the happiest, because they have the most important equipment in the private home theater - room. Whether it is ISF or THX, it emphasizes the importance of the environment. Without a good audio-visual environment, even the best peripheral equipment will be greatly reduced.

First, black is the most ideal

If it is a 100% pure audio-visual room, all black can bring the best picture quality. Now you don't have to worry about the interference of the ceiling and side walls on the projection screen, and you don't have to worry about the interference from the outside light, and the all-black environment makes it easier to put into the picture and sound effects. If you feel that the black is too depressed, you can use a darker color such as gray to minimize the secondary reflection of light.

Second, try to set the equipment next to

Digital amplifiers, Blu-ray players, CDs and other equipment will emit annoying lights in the black environment, affecting the line of sight, and setting the equipment rack on the side or behind can effectively avoid this problem.

Player selection

The source of the program usually comes from DVDs and Blu-ray discs, as well as high-definition sources from the Internet, and HDTVs in some places.

1, DVD is still the mainstream.

For the vast majority of consumers, DVD is still the mainstream, easy to buy, and cost-effective. Below the 50-inch screen, the quality of the DVD is also quite good, and some excellent DVDs, the sound effects are also directly in HD format, if you do not compare AB, it is difficult to find the difference. If you buy a DVD now, be sure to choose HDMI with multiplier output. And some mid-to-high-end DVDs that are still in service are also valuable, because the current Blu-ray players are not perfect for watching DVDs.

2, Blu-ray is a new thing.

Some friends who are more advanced or who are looking for the best sound quality have already noticed Blu-ray. In the second half of the year, the domestic Blu-ray opportunities below 2,000 yuan will appear one after another. Because the blue light itself has super high sound quality, the entry-level model effect is also very good, and the initial contact is very shocking. These entry-level Blu-ray players are output via source code, allowing HD amplifiers to be decoded, which further ensures audio effects.

3. Online download is in line with national conditions.

At present, high-definition enthusiasts are still mainly based on online downloads. There are two types of devices to play: HTPC and HD player. Unless you are proficient in PCs and are familiar with the relevant playback software, it is best not to use HTPC. Although the HD player has a lot of small problems, it is closer to the general public and closer to the operation of the traditional disc player.

4, HDTV HD TV is the trend.

With the opening of HDTV channels such as CCTV-HD and Shanghai Wenguang, HDTV services have been opened in some regions, and a steady stream of high-definition sources can be received through set-top boxes. Limited to broadband, HDTV's picture quality exceeds DVD, but it is worse than Blu-ray; sound also has 5.1 sound, but the code stream is too low, far below the level of DVD.

Speaker selection

The first place to set up a private home theater is to buy speakers. Since the speakers are analog devices, the technology is relatively mature and relatively valuable, so many people spend most of their budget here. A good set of speakers laid the foundation for a good sound, and it really can't be sloppy.

1, 5.1 or 7.1?

In the DVD era, 5.1 was the standard configuration, and when it came to the era of Blu-ray, it suddenly became 7.1. In the end, is it 5.1 or 7.1? It depends on the audio-visual environment. As mentioned above, if you sit behind the wall and there is not enough diffusion distance, 5.1 is better than 7.1. Don’t be greedy, the speakers are not necessarily It is a good thing.

2, sound orientation.

Speakers designed and produced in different regions will have different sound styles. Generally speaking, the American brand's home theater audio is the most popular, which can bring the most exciting cinema experience; the British brand continues the characteristics of Hi-Fi speakers, relatively soft, listening to music is more musical. Therefore, before buying, be sure to listen to the effects of several brands to see which sound style is more suitable for you.

3, bookshelf + subwoofer.

For multi-channel cinema use, combined with the domestic living environment, it is easier to achieve good results by using a bookshelf (satellite box) plus a subwoofer. The THX standard is to give the low frequency below 80Hz to the subwoofer. The main box is only responsible for the frequency band above 80Hz. The advantage of this is that it can reduce the burden of the power amplifier, because the low frequency consumes the most power; another advantage is that low frequency management can be implemented, and the low frequency Unified delivery to the subwoofer makes it easier to get high quality low frequency effects.

Large floor-standing boxes are not bad, but it is not easy to play the floor-box in a small space. As a result, the budget investment of the power amplifier has to be increased a lot. Secondly, controlling the low frequency of many floor-standing boxes is also difficult for novices.

4, the central can not be ignored.

Most of the movie dialogues are issued by the center speaker, so the center can not be ignored, it is best to ensure that the first three speakers are the same model, which is conducive to the uniform sound field.

5, the subwoofer is the soul.

In the sound standards such as Dolby and DTS, the subwoofer is indispensable. Some extremely low frequencies below 40 Hz, the general bookshelf and the floor box are not competent, and must be handed over to the subwoofer. A high-quality subwoofer can quickly improve the momentum of the overall system, playing the role of finishing touch.

6, THX certified multi-channel speaker system.

There are a number of multi-channel speaker system kits available for private home theater development and THX certification. These kits feature 5.1 or 7.1 consisting of a main box and a subwoofer. The main box and surround are responsible for the frequency band above 80 Hz, and the subwoofer is responsible for the transmission below 80 Hz. The first three speakers are usually the same for consistency. The surround speakers use dipole or three-way sounding for better surround diffusivity.

Audio sound reinforcement

Private home theaters entered the era of Blu-ray, and home theater amplifiers not only have decoding formats such as Dolby TrueHD and DTS-HD MA, but video processing has also received increasing attention and has become a media center for managing many devices.

1, with high-definition decoding.

Blu-ray brings us high-definition audio formats such as Dolby TrueHD and DTS-HD MA. Only the amplifiers with HD decoding capability can enjoy the charm of HD audio in the next era.

2, HDMI 1.3

Now buy a home theater amplifier, you must choose the HDMI1.3 standard, in addition to high-definition audio source transmission, you can also transfer 1080/24p/50p/60p image format.

3, automatic setting function and automatic EQ should be used.

Most of the current home theater amplifiers come with a microphone, which can be automatically set, such as the number of speakers, distance, crossover point and EQ correction. For beginners, this automatic setting is simple and simple, and has certain practical significance. But each audio-visual environment and equipment are unique. Automatic setting and automatic EQ are not omnipotent. In many cases, it is a help, such as excessive attenuation of low frequency and high frequency, suppressing dynamic output. Therefore, it is best for the old player to bring his own sound pressure meter, re-check the basic settings, and make adjustments based on the actual listening feeling.

4, the distance of the subwoofer.

After the automatic setting, the error between the main box distance and the actual distance is usually not large, but the subwoofer tends to have a large difference, which is normal, because the power amplifier will try to make the low frequency and other frequency bands reach the audiovisual position together, the distance of the power amplifier. It is the delay, so you don't have to set the actual subwoofer distance hard, but use the way of listening, adjust or adjust the distance to see which distance has a better degree of integration, and the subwoofer "disappears".

5, pay attention to the crossover point.

It is generally recommended to use 80Hz as the crossover point, which can effectively reduce the burden of the amplifier. Especially for some entry-level amplifiers, the power itself is not large. It is not good to use some floor-standing boxes. The control effect is not good enough, causing sound distortion.

6, make good use of DSP mode.

Today's HD amplifiers have more or less DSP or THX modes. Most of these modes are developed for general home improvement environments. For example, some THX modes will compensate for high frequency and low frequency, and cater to the living room theater users. In an environment with acoustic processing, it is best not to use these DSP modes, so that you can get the most abundant sound details, dynamic without compression, more direct sound, and less modification.

7, big horse car.

The effect of private home theater should be based on control and instantaneous dynamics. The power amplifier does not have sufficient energy reserves and margins. Therefore, senior players will use the gameplay of the front and rear stages to implement the big horse-drawn car. Try to use the high-power post-stage power amplifier. In exchange for more control and instant dynamics.

8, the front and rear levels are the final destination.

Just getting started, it is recommended to use a merger machine, which is a general AV amplifier, which is simple and convenient to use, and the effect is not bad. For experienced and demanding players, the front and rear level is the final destination, there will be more fun to play, and secondly, there will be more powerful effects, of course, the price is not cheap.

9, THX certification standards.

At present, most of the high-end AV amplifiers have passed the THX certification standard and have certain qualities. The latest THX Ultra2 Plus certification incorporates THX Loudness Plus technology, which corrects the mastering of the film to give enough dynamics and detail at a low volume in a normal environment for a softer, more natural listening experience.

In the past, when people talked about setting up a private home theater, they first thought of a speaker amplifier, and often ignored the display terminal. With the advent of large-screen flat-panel TVs and home theater projectors, the more important the display device, the large sound field must be combined with a large enough screen to create a feeling of being on the scene.

Video part

1. Is it good to buy LCD, DLP or LCoS (Sony SXRD, JVC D-ILA) home theater projector?

The technology of home projectors is developing rapidly and is updated once a year. Each of the three technologies has its own advantages and disadvantages. It cannot be said in general terms which technology is good, and the technology is not good. The key is to look at the product grade. In general, the LCD color is brighter and richer, and the cost performance is higher. DLP has low-end to ultra-high-end, featuring high contrast and natural color. LCoS is a reflective liquid crystal technology that draws on the characteristics of LCD and DLP and is currently concentrated in the mid to high end.

2. The lens shifting device of the projector.

Home projectors with Lens Shift lens shifts provide convenient installation, while models with motorized focus and zoom are more convenient.

3. Reasonable viewing distance.

At present, flat-panel TVs and home projectors are almost all full-HD. With the 1080 source, it is not easy to find the defects of the screen at close range. In theory, the 1.7-fold or 33-degree vision of the screen width is the best viewing distance. Such as 100 inch 16:9 best viewing distance of about 3.76 meters.

4, hanging curtain (ground curtain) or frame curtain?

From the perspective of the flatness of the curtain, the frame curtain is the first choice, and it can achieve the effect of being flat as a mirror, but it occupies a place and is generally used for a dedicated audio-visual room. Hanging curtains (ground curtains) are more space-saving, can be collected without using them, but the flatness is relatively poor.

5. Is the white screen still a gray screen?

For private home theaters, especially living room home theaters, the curtains are still susceptible to ambient light interference. The use of light gray screens can enhance the black level, and the color purity is slightly worse than the white screen. In a black environment, the white screen effect is the best and provides the best color performance.

6, the screen brightness also has a standard.

The screen brightness of a movie theater is usually 12-22fL, and the home is usually 12-16fL. Only when it is close to or close to the brightness standard can the latest viewing effect be obtained.

7. Do you need to use a screen with gain?

The key is to look at the size of the projection to see if it meets the above brightness criteria. The mainstream 1000 lumens home theater projector, projecting more than 120 inches, it is best to use a screen with gain.

8. The difference between different gain screens.

The 1.0 gain is the standard. Below this standard is called the negative gain. The common negative gain in the market is 0.8. Above this standard is called high gain, which is usually at 1.3 or 1.5. The negative gain screen makes the picture look thicker and the black is more stable. It is not easy to make a high-gain screen. The high-gain screen usually has a HOT DOT hot spot and it is easy to see noise.

I hope that I can help you set up the best fever audio and private home theater for you. More fresh and fun home theater information, please pay attention to home theater network http:// (WeChat: cnhifi), the country's most influential home theater audio player interactive media website.

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