A friend who has a home theater in the home will definitely install a subwoofer. Its perfect sound quality can't stop, but sometimes it will cause some trouble. Hey, I just said that someone knocked at the door. It must be protesting that my son watched the movie last night and turned the sound high. There must be many friends who have the same experience as me. Here is a good idea for you to install a home theater. When buying a subwoofer, you must also count the cost of soundproofing. Otherwise, don't buy it, because you can't use it if you buy it. Your family and neighbors will have opinions about you. Unless it is ready for sound insulation. The first measure: door and window soundproofing We know that the general door and window sound insulation effect is not high, we often hear the sound coming in from outside, and the low-frequency sound travels far away, and the interference effect is more significant. So what should I do? You can make the window double-layer, that is, add another layer to the existing window. Of course, the window should have a good sealing. This is the least expensive and effective method. For the sound insulation treatment of the door, a hollow double-layered door with a cavity can be adopted, the panel is made of plywood, and the sound-absorbing cotton is laid in the middle. If the door panel is a multi-layer composite sandwich door, the door seam should be made into a slanted opening, plus a blanket or rubber strip seal, so that there is already a relatively effective effect! The second measure: the first method of sound insulation on the wall is to remove the original wallboard, add gray cardboard on both sides, and stuff it with polyester fiber sound absorbing cotton. This kind of scheme will have a good effect. The second method is to retain the original partition wall, and add a few columns to form a sound insulation wall with ester fiber sound absorbing cotton inside. If you want to be simple, evenly apply a layer of cement to both sides of the brick wall you have built. Increasing its areal density is the most effective and economical way to increase the sound insulation. The gaps and holes in the leaking sound also have an effect on the sound insulation of the room, especially for the sound insulation of the intermediate frequency part, which must be sealed. In the case of a lightweight wall, a low-density gypsum board or a cement fiber pressure plate can be added to the inside. The third measure: laying a layer of high-density glass wool damping cushion on the sound-insulating structural floor of the floor and then making 40mm thick concrete floor, the weighted impact sound pressure level can be less than 60dB. Some suggest that the ground be paved with river stone + sand, then grind 3cm of cement on top, and then lay the floor. Of course, if the wooden floor is nailed into a cavity, it will have a good absorption capacity below 100 Hz, and the low frequency effect of the sound will be very good. And laying pebbles under the floor can just fill the gap that easily causes standing waves and co-seismic, and even the drawbacks of the hollow wooden floor can be overcome. The fourth measure: the sound insulation of the ceiling, many people want to make a ceiling when decorating, but the ceiling material is relatively thin, especially the three-ply board is more likely to cause resonance. Nowadays, the general person's treatment method is to use the light gypsum to make the uneven surface of the tortuous plate on the top of the ceiling, so that it is not easy to cause reflection, and does not reduce the actual height of the room, and is more economical. When the floor height exceeds 3 meters, it can be constructed by evenly drilled lightweight gypsum board (a special perforated sound-absorbing sheet) and gypsum inlay with uneven surface, which is both beautiful and sound-proof. Some friends also made a flat ceiling through the keel, ultra-fine glass, and splint, and also became a thin-plate resonant sound-absorbing device to meet the sound-building effect. However, the author thinks that, in general, the ceiling is also best for both sound absorption and sound insulation. And for better sound insulation, it is best to use a professional sound insulation material to make a special soundproof ceiling. The fifth measure: the sound source is the subwoofer's sound insulation treatment is to give the subwoofer pad a granite plate with a thickness of 4CM or more, because the mass inertia of the granite plate can absorb part of the vibration energy of the subwoofer, and then the flexibility between the granite plate and the floor. The buffer layer is rubber/carpet, etc., so that the subwoofer can be directly coupled to the floor, and the bass can be effectively transmitted to the downstairs, which will greatly reduce the impact on the residents downstairs. At the same time, the granite plate on the subwoofer pad helps to improve the sound quality. Commonly used sound insulation materials: The acoustic felt has the following advantages: 2, polyester fiber sound absorbing panels It is an ideal indoor sound insulation material. Its raw material is 100% polyester fiber, which has sound absorption, environmental protection, flame retardant, heat insulation, heat preservation, moisture proof, mildew resistance, easy dust removal, easy cutting, can be parquet, simple construction, good stability, good impact resistance and independence. Good character, high cost performance, etc., a variety of colors to choose from, to meet the needs of different styles and levels of sound-absorbing decoration. Mainly used in theaters, concert halls, museums, exhibition halls, libraries, interrogation rooms, galleries, auction halls, gymnasiums, lecture halls, multi-purpose halls, hotel lobbies, hospitals, shopping malls, schools, piano rooms, conference rooms, studios , recording studios, KTV rooms, bars, industrial plants, machine rooms, home noise reduction and other places that require high acoustic environment and high-end decoration. 3. The indoor soundproofing material of the wave-absorbing sound-absorbing sponge wave sound-absorbing sponge, which is a kind of sponge which is specially treated to form a concave-convex wave shape, and the inside thereof is filled with fine voids and a semi-opening structure, and can absorb a large amount of incident sound wave energy, The sound wave acts as an attenuation, reducing the interference and reverberation of the reflected sound in the room and improving the purity of the sound. (PS: Please don't use it. If you use a wave sound-absorbing sponge to spread the room, the consequences are very serious...) The main performance characteristics are: Note on the purchase of soundproof materials: 2, soundproof door purchase Look at the weight: the sound insulation formula and the density of the material is directly related, so the density of the sound insulation is relatively good, the molded door is relatively light, which is the root cause of the poor sound insulation of the molded door. But note: the soundproof cotton in the middle of the flat hollow door will be more soundproof than the solid wood door. SC To LC Fiber Optic Patch Cord
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1. Soundproof felt The soundproof felt is a good room soundproofing material on the market. It is mainly used in combination with gypsum board for wall sound insulation and ceiling sound insulation, as well as for sound insulation and damping of pipes and mechanical equipment. The soundproof felt is not felt, it looks completely different in appearance, the felt is light and soft, and the soundproof felt is thin and heavy.
The soundproof felt is made of odorless EPDM rubber and a dozen kinds of organic minerals in a certain proportion. The product is black, environmentally friendly and has no odor. It has a good sound insulation material for low frequency and high frequency sound, which can effectively suppress various kinds. The vibration spread, the thickness of the material is 1mm, 2mm, 3mm. According to the National Building Materials Bureau, the weighted sound insulation Rw is 23dB, 27dB, 30dB, and the flexibility of the material is also very good. It can be bent and cut freely. Very convenient and fireproof soundproofing material.
1). The material is light and ultra-thin;
2). Soft, strong tensile strength;
3). Environmental protection, no pollution to the environment;
4). suppress the propagation of low-frequency sound waves; excellent flame retardant performance;
5). Convenient construction.
1. High sound absorption rate 2. Good heat insulation 3. Difficult combustion grade B1 grade 4. Tight structure, stable shape 5. Light weight, safe and convenient construction 6. Harmless to the human body, no pollution to the environment, no odor 7. Water resistant, strong drainage after water immersion, sound absorption performance does not decrease, the shape is unchanged 8, can be used twice, easy to destroy, no secondary pollution to the environment
1, the soundproof window purchase See material: including aluminum profiles, glass, hardware, color is consistent, hardware assembly is complete.
Look at processing: high-quality aluminum alloy window, fine processing, smooth tangent, uniform angle (the main frame is usually 45 degrees or 90 degrees), there should be no obvious gaps in the stitching process, the switch is smooth.
Look at the glass: see if it is hollow glass, there is no coating, and the composite film is generally resistant to corrosion, abrasion and high gloss.
Look at the size: check if the window size is correct.
Look at the thickness: the thicker the surface layer, the better the sound insulation effect. The general laminate of the wooden door should be 8mm thick. The thickness of the surface layer is also good, but the cost is increased. However: the iron surface of the iron plate fire door is 3mm thick, and the sound insulation effect is also good.
Look at the flatness: the flatter the wooden door, the better the combination with the door cover, regardless of the structure. As long as the deformation of the wooden door is not soundproof.
Tips for selecting soundproof doors: The sound insulation of the door mainly depends on the quality of the door panel, mainly depending on the filling of the core of the door. Generally, the core of the molded soundproof door is filled with a paper base of a honeycomb structure, and the closed air layer formed by the core can provide good sound insulation.