What Are the Different Types of Home Theater Components?

"Home theater" is a professional multi-channel surround sound theater equipment developed in the late 1970s using modern electronic technology. It is a simplified home product. It is an audio-visual (A / V) system product. , A / V program source (such as DVD, LD player, etc.), A / V power amplifier (also known as surround sound power amplifier for home theater) and a group of speakers. Home theater is an audio / video playback system, which enables You experience the visual and auditory effects that can only be experienced in the theater at home. Building a home theater can be as simple as adding a surround sound system to the TV in the room, or as complicated as building a dedicated listening room. Equipped with carefully designed recessed speakers, high power amplifier and a large screen projection TV system.

Home theater set

"Home theater" is a professional multi-channel surround sound theater equipment developed in the late 1970s using modern electronic technology. It is a simplified home product. It is an audio-visual (A / V) system product. , A / V program source (such as DVD, LD player, etc.), A / V power amplifier (also known as surround sound power amplifier for home theater) and a group of speakers. Home theater is an audio / video playback system, which enables You experience the visual and auditory effects that can only be experienced in the theater at home. Building a home theater can be as simple as adding a surround sound system to the TV in the room, or as complicated as building a dedicated listening room. Equipped with carefully designed recessed speakers, high power amplifier and a large screen projection TV system.

Chinese name

Home theater set

Nature

Professional multi-channel surround sound cinema equipment

Main brand

Jumbo, etc.

Technology used

modern electronic technology

Setting up your own home theater equipment requires some expertise.

Most home theater packages are not complicated, but the price varies. Regardless of the configuration, the "Home Theater System Suite" is a practical and sound solution. Many people think that the package sound

There are many home theater sets on the market

Clean contacts every six months

Soon after the metal is exposed to the air, the surface will oxidize. Even if the surface of the signal cable plug is gold-plated and in close contact with the body plug, over time, there will still be a certain degree of oxidation leading to poor contact, so it must be cleaned at most every six months. As long as the contacts are coated with cotton and alcohol, the contacts will be restored to the best contact after the heavy work, and the sound will be clear and transparent.

Try to avoid stacking machines

As far as possible, the most important CD source and sound reinforcement should be placed independently, because overlapping placement will cause resonance and affect the machine. When the speaker is playing music, the vibration of the air causes the equipment to follow the vibration, and the two machines will harmonize with each other when they are stacked, making the subtle information in the music blurred, and disturbing the transmission of various frequency bands, causing a sound pollution For example, if one of them is a CD player, the continuous rotation of the motor during the playback of the disc intensifies the amplitude of the harmonic vibration, and the impact is even greater. Therefore, the equipment should be placed on a stable rack independently.

Less interference, more beautiful sound

Household appliances and computers in the room should avoid sharing a set of power with the audio, and even if they are put together, they should get power from elsewhere. Secondly, tangling the wires will also cause the wires to absorb noise from each other and damage the sound quality. Regardless of equipment or connection lines, they should be kept free from interference from other electrical appliances or power lines.

Speaker placement

The placement of the speakers is an important part of the use of the audio. If not placed properly, the playback effect will be greatly reduced. How to find the best placement in the room is quite difficult. In addition to constantly listening to the effects of different placements, you can also ask relevant experts to give guidance.

Dim environment helps listening

Turning off the lights and listening to music is a habitual problem, but it has nothing to do with playback, but in a dark environment, the ears will be particularly sensitive, and it will reduce visual obstacles, reorganize the sound picture and the sense of position of the instrument It will feel particularly clear and clear, the atmosphere is far better than when it is turned on, and some other dim lights can be used to create a listening atmosphere.

Sound absorption should be appropriate

In general home environment, furniture and sundries are already good sound-absorbing materials. You don't need to make the sound absorption too complicated, and a carpet can basically enhance the sound-absorbing effect. In addition, the advantage of the carpet is that it can reduce the reflected sound of the floor and avoid mixing the sound from the front to cause turbidity. When the speaker is too close to the back wall, you can also consider adding a tapestry to increase the sound absorption effect, but you should not be too large, otherwise you may suck even the ultra high frequency. In addition, the glass and mirrors in the room will have a strong reflection of the sound, which needs to be covered with curtains to solve the problem. Friends with high requirements may wish to do more sound absorption at the corners and indoor sound reflection points, but pay attention to the sound absorption should not be excessive, the appropriate amount of reflected sound will help the sound lively.

The mainstream of audio decoding is digital surround sound format with DVD and even HTPC as the core. The latest system also supports THX SURROUND EX and dts es decoded by Dolby Digital EX 6.1, and multi-channel digital audio DVD-Audio and SACD. As for multi-channel The playback system is technically the same, the difference is mainly in the grade. Moreover, as a system, the audio system is composed of various equipment. When buying, you must not only consider the whole, but also consider each component:

Speaker

The speaker is the terminal for audio playback and the most overlooked part of a home theater system. A good speaker involves the disciplines of acoustics, electromagnetics, mechanics, materials, etc., and is the key to affecting the audio playback effect. It's not just six wooden boards and a few speakers that can be called a speaker.

In the X.1 AV speaker system, the subwoofer is the most important. The subwoofer can enhance the bass effect, and the most powerful subwoofer can perform the bass below 100Hz.

In addition, ideal home theater speakers, in addition to the subwoofer, it is best to strive for consistency in each channel-the main speakers on the left and right sides have the highest requirements for sound quality reproduction, and the center speakers and surround speakers on the rear can be smaller than the main speakers. But it must match the tone of the main speaker.

Good diffusion speakers are more practical, you should listen more and compare more during the purchase process. It should also be noted that most speakers do not take into account both dynamic and detailed sound quality. Speakers suitable for music appreciation are often more delicate and less dynamic; multi-channel AV speakers specially designed for home theater are often bland. . If both are taken into account, it is sky-high. So you have to find the one that suits you best. Consumers with no listening experience are better off using the same brand.

In addition, there are many devices on the market that can virtualize the effect of surround sound through two speakers, but this virtual surround sound is essentially different from the surround sound reproduced by multiple speakers, so you want to feel full of dynamic and surround For the cinema effect, 5.1 speaker system is already the lowest configuration.

AV amplifier

AV amplifier is the center of audio playback, which is characterized by multi-channel sound playback. When it comes to multi-channel playback, the standard of surround sound is inseparable. The current popular surround sound standards are: 1. Dolby prologic surround sound. 2. Dolby Digital surround sound. 3. DTS surround sound. 4. THX Surround EX surround sound (7.1-channel). 5. DTS-ES Discrete surround sound (6.1 channels). A home AV amplifier must have at least the Dolby Digital surround sound decoding and playback function, because Dolby Digital is the mandatory sound standard for PAL video discs specified by the DVD Alliance in December 1997. It is the user's responsibility whether the AV amplifier has this function. Selection of basic points. But other mainstream sound effects are best.

In addition, it is recommended to choose a combined AV amplifier with a built-in decoder. The factors that need to be considered during selection are the sound quality and color of the amplifier. Because the sound is subjective and varies from person to person, it is best to connect the speaker to the amplifier for actual audition.

Audio source

Currently, mainstream audio and video media that can provide 5.1 surround sound include DVD, EVD, Blu-ray DVD, HTPC, mainstream game consoles and even MP4. For music appreciation, in addition to the most basic CD, the sound quality specifications of other audio sources are beyond CD, and support for multi-channel, can all become the standard audio source architecture, comprehensive consideration when selecting the type of audio and video source.

At this stage, DVD players are still the most suitable as home theater audio and video sources. In addition, Blu-ray DVD players with large capacity, high definition and perfect sound quality (including PS3 game consoles using Blu-ray DVD, etc.), HTPC or true SD / A high-definition digital TV system is also a good choice.