Matters needing attention in decoration of private home theater
The price level of private home theater
1, 40,000-60,000 recommended level. Affordable, effective and cost-effective? 6-65438+ million? Major? Moderate price, good audio-visual effect and high cost performance? .
2、? 10-200,000 is a BMW class. ? Positioning high-end, pursuing the best presentation of audio-visual effects.
More than 3.2 million? This is a fever level. ? Enthusiast paradise, fever-level equipment, the pursuit of the perfect combination of details and the whole.
Tips: The above price includes: audio-visual equipment and acoustic design fees.
Reference of main equipment and acoustic decoration cost in home theater decoration
1, projector 1-30,000
This refers to 2D projection, and generally 2D can get a good audio-visual experience. The price of 3D is 30,000-80,000, and 3D projection can get a better viewing experience.
2. speakers? 2-65438+ million
Speaker is the largest investment in all equipment, which directly determines the audio-visual effect. The price of speakers varies greatly, ranging from tens of thousands to hundreds of thousands. Generally, 20,000-50,000 speakers can have a good effect.
3, power amplifier 0.5-20 thousand
Power amplifier is the hub of audio-visual system, and different speakers of the same power amplifier can give full play to the maximum potential of audio-visual system.
4. Projection screen 0.5- 1 10,000?
Different levels of projection screens have different ability to restore video signals. A good projection screen can optimize inferior video signals, while a poor projection screen is a waste of video signals.
5, other equipment 0.5- 1 ten thousand
Such as: players, wires, discs, etc. , all within 1 10000.
6, acoustic design and decoration 0.5-20 thousand.
Acoustic design is related to the audio-visual environment, and the specific cost can only be worked out after the engineer investigates. Generally, it depends on the room area and construction difficulty. The larger the area, the more acoustic materials are needed, the longer the construction period and the higher the cost. It mainly includes: THX acoustic design fee, material fee and construction fee.
Decoration layout of private home theater
The so-called "three-point equipment, seven-point environment", in fact, in order to obtain good audio-visual effects, in addition to good equipment, there must be a good audio-visual environment. If the acoustic and optical conditions of the living room and room are poor, it will not help if the equipment is no matter how good and expensive, so we must transform our listening environment.
1, choose a house scientifically.
Domestic consumers mostly use the living room as an audio-visual room, and there are not a few people who can use one room alone for audio-visual. The room area of the audio-visual room should not be too small, and the clearance area should be above 10 square meter. If the audio-visual effect is too small, there will be an unnatural sense of oppression, and the equipment placement and viewing distance are unreasonable. When placing large speakers in a room, the height of the room should be not less than 2.8m, but not more than 4m, because the ceiling will reflect sound. Too high a space is easy to be inaccurate because of the long arrival time of reflected sound.
The ideal audio-visual room should be rectangular, and the ratio of length, width and height of the room also has certain requirements, depending on whether the ratio of the three conforms to the golden section law, such as 1:1.25:1.6,1:2.5 or/kloc. Never choose a square or a room with one side just twice the size of the other, because the sound will make the sound effect very bad.
However, rooms that meet the golden ratio are often available in ready-made houses, but this is not without remedies. Many friends use wooden cabinets or wooden boards to build compartments, transforming the ratio of length, width and height of the audio-visual room into an ideal state. If it is really difficult to find such an ideal ratio in reality, generally speaking, as long as the height, width and length are not divided by integers.
2, power supply processing
In general, the audio-visual room has high requirements for power supply, so it is best to pull a few wires directly from the home line. The wiring in the power box of the electric classroom should be separated from the incoming and outgoing wires, separated by direction and current, fixed into a rectangle, and clamped by wires respectively. There are still a few points to remind you: first, whether you plan to install central air conditioning in your audio-visual room, and second, whether you will install wireless remote control lighting adjustment system on the wall.
If there are these plans, they should be taken into account when planning in advance. In order to make the audio-visual room clean and beautiful, and facilitate the installation and operation in the future, it is very necessary to embed pipes and ports on six walls during decoration. When the line is embedded, the special signal line should be wrapped with PVC pipe and separated from the lines of air conditioner, refrigerator and telephone to avoid mutual influence. The quality of all kinds of wires should be excellent, with normal use for 20 years as the bottom line, so as to avoid "opening the belly" of walls or floors because of wire quality problems in the future. In order to ensure the purity of power supply, it is best to use professional plug-ins and filters.
3, door and window treatment
Pay attention to the treatment of doors and windows when decorating, with the purpose of sound insulation, sound absorption and dust prevention. A lot of noise enters the room through doors and windows. A good wooden door, after locking, can reduce the indoor noise level 10-20db. If the door frame is covered with sealing strips, the noise level can be reduced by 14- 18db. If the outdoor sound is noisy, it is recommended to install double windows. Generally, the width of the window sill of the living room is about 12- 15cm, and a layer of glass window can be installed at the edge of the window sill to play the role of dust prevention, sound insulation and warmth. Double glazing can reduce outdoor noise14-18db; If the sealing strip is covered again, 18-20dB can be reduced. If possible, aluminum alloy windows can be installed and made into push-pull type, which saves space, is convenient to use, is not easy to deform, has good sealing performance and is superior to steel windows.
If air conditioning has been installed at home, the air conditioning duct is both an air inlet and a noise inlet; If the TV outdoor antenna is installed, the antenna entrance is also a noise entrance. These pipes and their interfaces should be muted. Curtains, hanging curtains and tapestries are important sound absorbers, but also more exquisite and luxurious decorations. Using velvet and velveteen as hanging curtains and curtains can reduce the reflection of sound waves and the vibration of glass windows. The sound absorption coefficient of velveteen curtain is 0.3 1-0.47, the sound absorption coefficient of medium-long fiber curtain is 0. 15-0.27, and the sound absorption coefficient of double-layer velvet curtain is the largest, reaching 0.69-0.82.
4, metope, floor smallpox treatment
After the doors and windows are processed, the smallpox treatment of each wall and floor is carried out. Generally speaking, our four walls are mostly brick walls. This kind of wall has strong reflection on high, medium and low frequencies, especially high frequencies. Therefore, "appropriate" sound absorption has become the primary task. By appropriate, I mean not to go too far. If you suck the sound dry and have no lasting appeal, it will be counterproductive. ? (1) Side wall treatment
In the end, how to absorb these four walls is appropriate? Let's start with two side walls. What we need to deal with here is the first reflected sound of the speaker. Why do you want to suck the first reflected sound? If there are too many reflected sounds for the first time, the positioning will be unclear and the sound will sound too noisy. Be sure to suck. How to smoke? You don't have to absorb sound on the whole wall, just about half way between the speaker and the listening position.
This sound-absorbing area should be at least 1- 1.5 meters wide and the wall height should be two thirds. Common sound-absorbing materials are mineral wool, glass wool and polyester sound-absorbing cotton. Polyester sound-absorbing cotton is the best and can be made into soft bags. But please be careful, don't think that the nailed board can absorb sound, and the surface of the board is flat, just like the original wall. The board itself is very hard, no different from the wall. It won't have the function of sound absorption.
5, horn back wall treatment
The back wall of the horn must be strong and hard, so as not to absorb low frequencies and double the power of the amplifier. If the cavity is nailed to the back wall of the horn, no matter how thick a board or thin plate is used, it will definitely have a negative effect but no positive effect. The most common negative effects are empty sound, insufficient low-frequency sense, not strong and unclean. The so-called suction is not to create a cavity, but to suck like a side wall. Please note that if you think the positioning is accurate and the sound will not be very noisy after the sound absorption on both sides, then the back wall of the horn can not absorb sound. On the other hand, if the sound is still too noisy and the positioning is not accurate, then the rear wall of the horn should be sound-absorbing to ensure that the sound on the wall will change after suction.
6, corner back wall corner processing
Any corner is the place where the standing wave is strongest. If you can treat it a little, it will definitely help the voice. If left untreated, it won't actually cause much harm. The most natural and inexpensive way to deal with it is to design the corner into a bookshelf, CD rack or decorative rack. Someone will seal that right angle with a board and make it an oblique angle instead of a right angle. This is useful, but there is still a risk that the angled cavity will absorb low frequencies. Someone made that right angle into an arc, and the arc has the function of spreading sound waves. Listening position Generally speaking, the chair is at least half a meter away from the back wall, so the sound will be cleaner. The wall behind the listening position can actually suck or spread. The suction is afraid of being too close to the back wall and the reflected sound is too strong; Diffusion is used because it is far from the back wall. Diffusion can make the sound more natural. The best way is to use sound-absorbing materials on the surface of diffusion modeling, so that the benefits of absorption and diffusion can be achieved at the same time, which is the most perfect.
7. Floor layout
The floor at home is probably marble, tile or wooden floor. For example, some people like to spread granite and marble slabs on the living room floor, which are hard in texture and very bright in surface, and look luxurious and rich. However, from the acoustic point of view, this floor has a strong reflection on sound, which will not only destroy the sound image positioning, but also easily produce annoying standing wave interference. In order to reduce the low frequency reflected by the floor, we also need to lay a movable thick carpet between the speaker and the listening position. Please pay attention to the thick carpet, not the ordinary South Asian thin carpet.
Why do you need a thick carpet? Because the sound absorption effect of thick carpet is enough, if only a small piece of thin carpet is used, it will only have decorative effect and will not have substantial sound absorption effect. However, if the wooden board is directly laid on the cement floor, the effect is not very good, and its acoustic effect is similar to that of the tile floor; If the wooden floor is nailed into a cavity, it will have a good absorption capacity for frequencies below 100Hz, and the low-frequency effect of sound will be very good. If pebbles can be laid under the floor, it can just fill the gap that is easy to cause standing waves and earthquakes, and even overcome the disadvantages of hollow wood floors.
8. Treatment of ceiling
Generally speaking, it is best for the ceiling to have both sound absorption and diffusion, so that the sound will be the best. If there is only diffusion, the high-frequency reflection sound from the ceiling will be too strong. There are several treatments for smallpox:
Light steel skeleton mineral fiberboard
This is the simplest ceiling treatment and the most economical. Although this kind of ceiling only absorbs high frequency and has no diffusion function, it will be very effective for suppressing noisy high frequency and indoor long echo.
Seaweed well plus central area sound absorption
The so-called caisson is a lattice with upward ceilings, which can often be seen on the ceilings of old buildings in China, and has been treated in Shanghai and Beijing concert halls. The function of algae well diffusion lies in the step of inward contraction layer by layer, and its absorption function is placed in the middle. What are the disadvantages of algae wells? First, it is quite expensive to hire a carpenter to do it; Second, the cavity of the algae well itself will absorb the middle and low frequencies. But if you don't have enough sound absorption and diffusion, and you like the beauty of algae wells, I'm afraid algae wells are still a good choice.
Aperture Gabor diffuser
Orifice plate is the kind of thin plate covered with small holes that building materials companies can buy. Cut the orifice plate into two-foot square pieces, then spread foam or sound-absorbing cotton on the upward side of the orifice plate, and then put it on the light steel frame. Only half of the perforated plate is needed in the whole ceiling, and the remaining half of the light steel frame is put together with the Polly diffuser. In this way, the orifice plate can absorb sound, the Polly diffuser plate can diffuse, and the whole ceiling is not ugly to match.
9. Laying sound-absorbing and amplifying materials
If you consider choosing some materials with certain sound-absorbing function when decorating the room, such as non-woven wallpaper and wallpaper with embossed patterns, it is best to choose sound-absorbing materials reasonably. But we should also pay attention to avoid laying too many sound-absorbing materials, otherwise it will make the sound dry, lack a mellow and pleasant sense of space, and lose the charm of music.
If the living room conditions are limited and it is impossible to set up a home theater or a listening room separately, then it is the best choice to put a set of stereo in the living room as a home theater or listening environment. If the study or bedroom is used as a home theater or listening environment, its effect may be greatly affected. If there is a cement wall on one side and a large cabinet furniture on the other, it is necessary to hang one or two decorative paintings or tapestries of sound-absorbing cloth on one side of the cement wall and make some acoustic compensation to make the acoustic performance of the two sides of the main speaker as close as possible.
If you want to save trouble, you can also use floor-to-ceiling curtains and carpets to obtain a certain sound absorption effect. This can effectively reduce part of the reflected sound and improve the clarity of the sound, thus improving the listening effect.
10, the channel position should be reasonable.
Placement of subwoofer
Let's take a look at the placement of the subwoofer. Because people's ears are not sensitive to the directivity of bass, they can be placed in the corner. But at this time, we must pay attention to two points: ① The subwoofer must never be placed on an object that is easy to resonate, such as a portable computer desk. Once this is done, the table will vibrate when the subwoofer works, which has a great influence on the sound quality; (2) The back of the subwoofer shall not be attached to the wall. This is because many subwoofers are designed in reverse. But if there is no certain distance behind the inverted hole, the bass can't be played. So, at least there should be some distance from the wall.
Placement of satellite box
Now let's look at how to deal with satellite speakers. Let's talk about the front speaker, preferably at an angle of 45 -60 degrees with the ear, in which the distance between the left and right speakers is determined by the position of the listener, that is, the distance between the listener and the display. Generally speaking, the front speaker can be placed at the same height as parallel to the listener.
Center speaker position
There is only one principle for the center speaker-the setting must be in front, that is, on the middle vertical line of the left and right speakers. Although the distance between front and back doesn't matter, it should be as moderate as possible. As for the surround speaker, it should be placed face to face with the front speaker or at a 60-degree angle with the human ear, and the most? It's best to hang it on the back, 60 cm -90 cm above the head.
In a word, the well-located 5. 1 system should be clearly located and there should be no faults. Just like a bullet flying through the sky, it is necessary to have a complete sense of position change. If you don't feel this way or feel unclear, you need to adjust the position of your speaker. And the audio conversation should start from the middle, and feel that the speaker is in front of you. In low frequency, 5. 1 system pays attention to vibration, so it should have a good contrast with dynamic scenes. 5. 1 The higher the sound quality of the system, the more powerful and imposing the bass should be.
Remind everyone of the following bad practices: put the equipment in the cabinet. Some friends put the equipment in the cupboard for decoration or protection, but it is thankless. Because the resonance inside the box will make the sound of the speaker turbid, and the power amplifier will overheat and age because of poor air circulation. Of course, it is not good to embed the speaker into the wall, which will make the sound stiff. Stack devices together: Many people like to stack DVD players, amplifiers, tuners, digital-to-analog converters, etc. , will cause mutual interference, especially between DVD player and power amplifier, which will lead to stiff timbre and a sense of oppression.
The correct way: put the equipment on a layered audio stand or theater platform. Using marble or glass bearing equipment, marble has low density and high resonance, which will affect the acoustic effect; The density of glass is higher than that of marble, but it is not thick, and the resonance is more serious; It is ideal to use granite handling equipment, but the thickness is preferably above 3cm. Adapt the original furniture to the audio position: Some people will arrange the audio position because they already have other furniture indoors. The correct way is to rearrange the furniture so that everyone can see the screen and hear all the speakers.
1 1, wire placement
Many people leave the wires behind as soon as they pick up the equipment, and often the wires behind the equipment are intertwined and messy. Also tidy up first and try not to touch the wires. If necessary, try to separate the power line from the signal line, because alternating current may produce alternating sound. In addition, if the wire is propped up without touching the surface or the back wall, it will also have a good effect. The contact between the horn line and the ground is the most unsanitary, so it should be propped up. After support, the improvement effect is quite remarkable. You can start from this line, and the spring has the best effect. You might as well try.
12, other small details
Imitate the style of the cinema: some spotlights can be installed in front of the audio-visual room, and some seats similar to the cinema can be installed, just like the studio of Universal TV. In addition, the installation of remote lighting system can change the lighting system of audio-visual room to remote control, and create the lighting and atmosphere when watching movies and listening to music at will. Indoor furniture should be placed with ease of use and elegant rooms. When decorating furniture, try not to take symmetry to prevent sound dyeing.
Do not place objects that cause vibration indoors, such as metal paintings and exhibits with thin shells. Their vibration will affect the playback effect. Generally, the bedroom can't be equipped with perforated plate resonant cavity, which is inconvenient to absorb low frequency. This shortcoming can be overcome after placing the wardrobe. In addition, dark furniture such as tables and chairs, mattresses and sofas can adjust sound transmission, which can be used as acoustic treatment and a good helper to absorb residual light. A set of furniture adopts dark earthy tones as a whole, which belongs to the "stable" color system, and can well suppress the reflected light.
In fact, home, decorations, ornaments, picture frames, etc. There must be harmonious colors, so as not to grab the eyes of red and green colors. Use glass and reflective materials carefully in bright places.
Finally, the arrangement of white furniture should be minimized optically, and direct light should not be installed on the front of the projection screen in the hall to prevent visual pollution caused by light leakage on the back of the lampshade. Moreover, in the environment of concentrated light source for a long time, eyes are easy to get tired. At this time, you need auxiliary light sources, such as vertical lights and book lights, to adjust the indoor light and make you feel bright and comfortable.
After reading such detailed things you should know about the decoration of private home theater, have you found that it is not a simple matter to build your own private home theater? Many people will give up or give it all to the decoration company, but Bunny thinks that since you are building your own private cinema, you should participate in many things yourself. Only in this way can we achieve perfection in our hearts.
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