With the improvement of the quality of life, people’s pursuit of the quality of life is getting higher and higher, and home theater has gradually entered everyone’s life circle. Home theater is not only a manifestation of a good leisure life, but also a symbol of quality life, which can better show the owner’s life taste and personal charm. The design of home theater includes many aspects. All audio-visual equipment is not a simple installation and matching, but a perfect audio-visual project. Home theater system Home theater audio system purchase and installation guide to help you move the theater home.
What is home theater food
In general, home theater can be understood from a combination of two concepts, which are “home theater standards” and “home theater standards” and “home theater”. playback system”. The “Home Theater Standard” consists of two specifications, “General Specification for Surround Sound Amplifiers for Home Theater” and “General Specification for Combined Speaker System for Home Theater”. The playback system mainly consists of three parts, namely audio and video player, AV amplifier, and speaker system. All three lack any playback system that can’t be called a home theater.
Home theater decoration preparation
Use occasions:The choice of home theater places has different requirements for equipment. The independent space can be carefully arranged, and the environment with good shading can be used for large-screen projection, and a 16:9 home projector can be selected.
Size: The size of the audio-visual area is closely related to how the equipment is selected and matched. Generally, an enclosed space of more than 18 square meters can be projected, and an audio-visual room of more than 50 square meters not only needs to spend a lot of money to purchase equipment, but also has good acoustic treatment.
Space, Acoustic Treatment: If you have sufficient funds, it is better to choose an audio-visual consulting company. Insufficient funds, do not have too many or too large glass windows, cabinets, and bookcases that are too thin. Carpets, sofas, coffee tables, hanging paintings, curtains, etc. are all good props for tuning.
How much and proportion of investment: The proportion of investment is about 50,000-100,000 yuan, signal source: video: audio: accessories (wires, racks, etc.) are 1: The ratio of 3:4:1 should be generally more appropriate. But this is not absolute, and it is necessary to “adjust measures to local conditions” flexibly.
Tips for matching: High brightness projector with low gain screen, low sensitivity speakers with high power amplifier, these are the basic matching rules. Each piece of equipment has its own style and personality. To be integrated as a whole, you can go to the audio city and specialty stores to listen and compare.
Process of setting up a home theater
Consider use: A complete home theater can be used for singing, watching movies, or both. If you only want a single function, there is no need to spend a lot of money to take care of both, but you still need to do your homework in advance and ask people from some professional audio-visual companies to avoid being scammed into spending a lot of money.
Learn about the checklist: What does a home theater package include? What equipment are there? In this way, be aware of it and avoid omissions. The audio part includes speakers, amplifiers, and players; the video part includes TVs, projectors, and screens.
Professional design: It is not easy to install a home theater, you must fully consider the spatial acoustics, otherwise even if your own equipment is obviously better than other people’s, the effect is much worse, not as good as others Yes, this involves the principle of architectural acoustics, so we still look for professional home theater technicians to design and decorate.
Home theater design points
Audio layout: The main speaker layout scheme has a 317 ratio and a 331 ratio. 317 means that the speakers are placed in one-third of the length of the room. In one place, the distance between the two speakers is 0.7 times the length of two-thirds of the room. On the other hand, 331 places the main speakers at the intersection of the first equal length and width. These two solutions are suitable for most families. In addition, there are screw hole pendulum method and triangle pendulum method. [Home theater audio system purchase and installation guide>>]
Projection screen: The principle of screen height processing is to meet the height requirements of most people, so that people can look comfortable, Do not look up or down, to ensure that the human body can maintain a comfortable posture during the long-term viewing process. The height of the curtain should be determined according to the height of the sofa and seat.
Acoustic treatment and layout: Different audio-visual environments, including the size of the space, the shape of the house, acoustic treatment, etc., all have different effects on the effect. However, it is certain that the basic requirements of home theater for the environment are “black, empty, and quiet”, and the good design of the theater’s environment is directly related to the final effect.
Renovation and wiring: The total number of wires for home theater equipment adds up to a lot, and wiring is very important for the overall aesthetics. The wiring of users who are ready to decorate is relatively simple, and the home theater has been set up before, but the user who chooses the display device is not a projector but a digital TV, then they will face the problem of rewiring.
Home theater equipment configuration projector
Projector: According to the home environment, the size of the living room, to determine the type of projector to buy, as well as brightness and contrast. The higher the resolution, the sharper the projector’s image, but the higher the price. Ask about bulb life and the cost of replacing bulbs.
Projector
Home Speakers: Calculate the speaker power of how much power to use according to factors such as space size, listening requirements and the decorative characteristics of the space. The size of the box should be coordinated with the space. Choose speakers with wide frequency response, moderate power, standard impedance, large dynamic range, heavy and sturdy cabinets, strong analytical power and high fidelity. The impedance of the matched power amplifier should be consistent with that of the speaker.
Projector
Amplifier: The smaller the distortion of the amplifier, the better the sound quality; generally, the integrated AV amplifier with built-in decoder should be selected, at least with Dolby Digital and DTS dual Decoder to ensure that enough audio and video resources are suitable for playback. The rated output power of the AV amplifier should be determined according to the driving power required by the speaker.
Projector
Home theater cables: We need to use HDMI cable, digital optical cable, digital coaxial cable, analog audio cable, Component Video component/component cable, S-Video Cables such as S-sub cable, Composite Video composite video cable, etc. The wire needs to have good contact, good durability, low transmission loss, and good shielding performance.
Projector
Video switcher: Try to choose an HDMI switcher that supports 4K and 3D; infrared smart remote control is indispensable; HDMI switcher with Micro USB backup power port is recommended Adapter; optional HDMI splitter with gold-plated interface.
Home theater installation wiring
Home theater wiring generally considers three parts: video, audio, and power. The best time for cinema wiring is to arrange and pre-embed it according to the environment and design before decoration, which can get better results. If you can’t do “pre-embedded” families with open wiring, first determine the placement of the speakers, and then determine the location, direction, exit, and length of the wiring.
Reserve sockets
After determining the sound position, you need to reserve enough wall sockets. If the quality of the audio and video equipment is high enough, you should also consider pulling a power supply directly from the meter box for its exclusive use, so as to reduce the interference to it during the use of other electrical appliances.
Power wiring
Because both the projector and the TV need 220V power supply, both weak and strong currents need to be arranged during decoration, and the lines must have a certain bearing capacity.
(1)Powerful Electric
Home theater equipment has higher requirements on power supply, so it is best to connect it directly from the household line Pull a few wires individually. The wiring in the power box of the audio-visual room should be separated from the incoming wire and the outgoing wire, separated according to the direction and current size, fixed in a rectangle, and secured with line cards respectively.
(2)Weak electricity
Including telephone line, network line, cable TV line, audio line, video line, audio line Etc., the arrangement method is almost the same as that of strong electricity. It is necessary to wear PVC pipes, and it is better that the cross-section of the line does not exceed 40% of the cross-section of the PVC pipe. Do not wear too much, and the distance between strong and weak electricity is at least 20 cm.
Speaker wiring
Speaker wiring is the top priority of cinema wiring, and the layout is quite complicated. Generally, the speakers of home theaters use 5.1 channels, and some families have 7.1 channel theaters. When the wire is not selected correctly, the placement position is unscientific, which will affect the effect.
Home theater soundproofing
Flooring: Home floors are mostly marble, tile, or wood, requiring a removable thick carpet in the area between the speakers and the listening position , so that the sound absorption effect is enough.
Ceiling: The ceiling should preferably have both sound absorption and diffusion, and can use light steel frame plus mineral fiber board method, well-sinking plus central area sound absorption method, and hole board plus Poly Diffusion plate method.
Door: The sound insulation effect of plywood doors in general collective apartments and simple home decoration is average, and now the increasing number of double-layer security doors have good sound insulation properties.
Window: The window can be double-layered. The interval between the two windows should be 20cm-30cm. It is better to take some sound-absorbing measures in this interval.
Walls: Use steel pan concrete or solid brick for better sound insulation. If the light hollow brick or gray glue cardboard wall is used, the original wall can be removed to create a new soundproof wall; or the original wall can be retained and an additional soundproof wall can be added. In addition, if you consider choosing a sound insulation board, although the sound insulation effect is good, it is much more expensive than the previous two solutions.
Attention when using home theater
The equipment should be placed on top of each other: Putting some DVD players, amplifiers, tuners, digital-to-analog converters and other machines on top of each other will cause mutual interference , the correct way is to put the equipment on the sound rack designed by the manufacturer.
Plug is positive and negative: Some users think that the sound effect is the same regardless of the positive or negative plug. In fact, it is not the case. The system with the positive and negative handling of the power plug has a clear tone and is natural and smooth. If the positive and negative are inconsistent, the sound will be hard and rough.
Place the audio in the cabinet: Putting the audio equipment in a custom-made cabinet will make the audio equipment prone to overheating and aging. Because the space in the cabinet is limited, there is not enough air circulation, which will cause resonance to muddy the sound, power amplifiers and other equipment.
Improper handling of wiring: There is a lot of knowledge in wiring. For example, when wiring, do not tie the power cable and the signal cable together, neither the signal cable nor the speaker cable is knotted, the signal If the wire or speaker wire is too long, it should be shortened, and the direction of the signal wire can be wrong.
Blindly imitating the balance: Blindly imitating others to improve the sound is not rational. It is necessary to start from the actual situation and find the most suitable solution in order to achieve better results.
Place the equipment at will: There are strict requirements on the position of the equipment, and even what kind of table is placed on it is also very particular, such as placing it on a marble table, the sound quality will be greatly affected buckle; the resonance vibration caused by the thin glass table is more serious, and the ideal bearing equipment is granite with a thickness of more than 3CM.
Speaker placement error: Speaker placement is a method that does not require money but can be adjusted to achieve a very good effect, but many people place the speakers randomly, and the sound quality The placement can be three-three-one, three-one-seven, screw hole pendulum and regular triangle placement.
Furniture placement: For the furniture in the theater, try not to take the symmetrical shape as much as possible to prevent sound coloration, and do not place objects that cause vibration, such as metal paintings, in the room. , thin and light-weight exhibits, etc. Combined cabinets, bedroom cabinets, large sofas, etc. have obvious sound absorption effects. [More>>]
Home theater equipment maintenance
Home theater equipment has a sequence of switching on and off, the boot sequence: first turn on the DVD player, tuner, record player, equalizer, effect, karaoke machine , mixer, power amplifier front stage, and finally open the power amplifier. Shutdown sequence: Just the opposite of the boot sequence, turn off the power amplifier and DVD player first, then turn off the speakers, and avoid cutting off all power at the same time. Do not turn on the amplifier to connect speakers and plug in audio source equipment. All wiring and input sockets and unplugging should be done in a shutdown state to avoid damage to the equipment. In addition, the maintenance of various equipment also needs attention.
1. Speaker maintenance
Turn the volume potentiometer of the power amplifier to the minimum before switching, and the function keys must be reset after use. The normal working temperature should be 18℃-45℃, avoid high temperature and direct sunlight, clean it every six months, and avoid bearing heavy objects.
Second, maintenance of the power amplifier
Master the correct use method, and place it in a dry, ventilated, safe, stable, and not easy to fall countertop or cabinet Use, avoid working in environments with severe humidity, high temperature, oil fume, chemical agents, and electromagnetic interference.
Three, Projector Maintenance
Protect against impact, extrusion and vibration, the environment should be dust-proof and ventilated for heat dissipation, and it is strictly forbidden to plug and unplug the cable under power. [Projector User Guide>>]
Four. DVD player maintenance
Heat-proof, moisture-proof, shock-proof, avoid heavy pressure, when receiving TV When broadcasting, first turn off the DVD player to prevent interference, and wipe it with a dry cloth regularly. When connecting or removing any connections, turn off the power first and take care of the cables.
Home theater Q&A
1. What is a real private home theater?
An independent space of suitable size, a set of reasonable audio-visual equipment, scientific acoustic design, and personalized aesthetic decoration can build a truly private home theater.
2. How much does it cost to make a private home theater?
Different grades have different prices, roughly 30,000 to 60,000 for entry; 60,000 to 100,000 for mid-range; 100,000 to 200,000 for mid-range and high-end;
3. What kind of room is suitable for home theater?
Not less than 20㎡ or larger, such as basements, private garages, small storage rooms, and other independent spaces are all good choices.
4. Does home theater decoration have to be carried out at the same time as home decoration?
Preferably, but not necessarily both. It is more convenient to do it at the same time, and not to do it at the same time just increases the difficulty of wiring.
5. Why don’t you find a home improvement company to do home theater?
The acoustic design that the home improvement company hardly understands, and the price of the goods is much higher than that of the professional audio-visual company, the effect is poor, the rework rate is high, and the after-sales service is not guaranteed.
6.Why does home theater have to do acoustic design?
Excellent acoustic design can make home theater get the best listening environment and sound field effect, which is the top priority of home theater design.
7.Why does home theater have to be aesthetically designed?
The aesthetic design will bring us unparalleled visual enjoyment and enhance our movie viewing experience.
8. How long does a home theater project take?
It is usually completed in about a month, but in practice, due to the need to coordinate the construction, the construction period will be extended due to some uncertain factors.
