For the public, the audio and video effects enjoyed in the home theater are not comparable to professional cinemas. What is the cause of the problem? First of all, the quality of the equipment certainly occupies a large part, and the environment and film source are As a result of the huge difference between cinemas and families, how can professional audio and video enthusiasts compare the effects of professional cinemas with professional audio systems? How to build a perfect digital audio-visual room in the quality of similar products? Departure for everyone to analyze one by one: Ordinary home sound systems can be divided into sound sources, power amplifiers and pronunciation units. As a household, the sound source can use a common disc player or a more professional laser disc player. Ordinary we do not advocate the use of MD player, although the sound quality of MD is not much different from CD, but the sound of MD is a product that is transcribed after tightening. The size of music is less than half of CD and small. Naturally, there will be losses, and the most original CD player and plastic disc player are still different. If you choose a DVD player, then the 5.1-channel jack on the back is absolutely essential. Don't support Dolby AC-3 decoding and DTS decoding. Don't choose a built-in amplifier. Environmental articles Run-in articles The demand for sound and running is step-by-step: the use of sound is the same as that of a car, and it also requires a break-in period, especially the newly purchased sound system. In the initial stage of use, don't use it as a karaoke speaker. Let's adjust the sound very loudly. We suggest that you use the initial volume to control the volume to about a quarter of the maximum output. After 72 hours of operation. , can properly increase the output to about one-half. Usually we don't recommend that you stop the volume by turning it to more than two-thirds. When the volume is too large, it will not only break through the rated output of the sounding unit. The excessive sound field is also not conducive to the positioning and performance of various sounds and instrument sounds. It sounds like a mess, except for the momentum of the earthquake. Nothing can be said about beauty. VEIIK Micko is one of the best flavor-rich, TPD-compliant disposable vape pens in the world. Its main features:
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Optional articles
The innate element is very important: when it comes to the sound of home, it is really "to rely on, use seven points to choose." After all, you are not the sound expert of DIY, more is to buy ready-made products, and the products are usually pre-manufactured and packaged by the manufacturer. Therefore, how to choose and configure a good sound of "congenital constitution" becomes our first. To do. 
The choice of power amplifier is important, but there is an important criterion for power amplifiers and speakers to try to achieve "power matching, impedance matching." Simply put, the power amplifier and the speaker are the relationship between the horse and the car. Whether it is a "big horse car" or a "small horse car" will seriously affect the efficiency of the system, and even damage the system components, so the first thing to do is to match the standard. of. Otherwise, the speaker system is not too weak, dry, or it seems to be exhausted.
In addition to pure music amplifiers, AV amplifiers are home amplifiers or home theaters that use more power amplifiers. However, since the amplifiers of all the speaker units are concentrated here, the performance in the high, medium and low sound ranges will be limited, depending on what kind of sound you value more. Ordinaryly, we recommend that the maximum output power of the amplifier is 1.5 times the rated power of the speaker, and the multiple of the bass local request is higher. However, with the sound to avoid using the amplifier to "find" the speaker, the speaker can be said to be the most important part of the sound, after all, the system of the "trick" in it, the texture of the difference will directly affect the final sound quality performance. Therefore, we prefer to pre-select the speaker and then set the amplifier.
At present, the speaker products on the market are mainly composed of two parts, a unit and a box, and are divided into a tweeter unit, a midrange unit, a woofer unit and a subwoofer unit according to the composition. The cabinet is the part of the speaker we first saw and touched. Technically speaking, the wooden cabinet is better than other materials, and the solid wood cabinet is the top grade in the wooden cabinet. At the time of selecting the box, we can feel the sound and texture of the box wood by tapping and moving. The normal sound is clean and bright, and the sound of the box is also better. The texture of the pronunciation unit depends on the skills of each manufacturer.
However, it is worth noting that the high-pitched localized silk film tweeter and the metal diaphragm tweeter have better performance, sound clarity, and good transient response, which can effectively enhance the transparency and penetration of high-pitched audio. As for the mid-woofer unit, a paper diaphragm or a canvas diaphragm can be used. Due to the large elasticity of the material, the sound is more thick and elastic. In the purchase of the mid-woofer unit, especially the woofer, pay attention to the flexible connection between the edge of the diaphragm and the bracket. The material is secondary. The key is to strike and touch to see if the diaphragm has enough on the bracket. Shake the space. Especially for the woofer, if the vibration amplitude is small, the diaphragm stroke is relatively small, and the strength and elasticity of the bass are greatly reduced.
Audition
I have to listen to the genuine disc: Many people think that the disc belongs to digital media. Even if it is pirated, the quality of the music will not be much lost, but the price is much lower. Therefore, the purchase of pirated discs to "enrich" my "fever" disc. Library.
In fact, pirated CDs are really something that can't be used. Since it is not copied from the master disk, the pirated disk usually has a situation of missing code and wrong code, and due to the rough manufacturing, the sound recovered from the sound is far less true than the genuine one. Some of the missing code application sound systems can be heard by the ear, obviously the middle part of the sound is pale, the high and low sound areas are rough and stiff, so that people can not only enjoy the enjoyment, but become more anxious. By the way, some people may ask: Then I buy a pirated disc to listen to the popular music assembly? This choice is still possible without worrying about the disc player or the player burning the head. In fact, Xiao Zhu feels that buying pirated music is not only a singer, but also does not get the original sound quality. At some level, it is not as easy as listening to MP3. 
The planning of the listening room: The listening room is the “song room†for home sounds. It is said to be the listening room. It is actually a room in our residence, but why should we call it the listening room? Because of it Unlike other rooms, special modifications are stopped to listen to the sound. First of all, the large space has great benefits for the spread and extension of sound, so we propose to choose the listening room in a room of more than 15 square meters. The height of the room should not be too large. The cost of the sound absorbing material is higher. Secondly, the sound diffuses in a higher space and easily constitutes a bad reverberation.
Secondly, the listening room should choose a position that is neither noisy nor disturbed by noise, and prevents noise from affecting the listening effect.
Again, the sound-absorbing material must be installed, usually thick curtains, tapestries, bookshelves can also play a sound-absorbing role. However, avoid excessive thick sound absorbing layers. If the sound absorbing layer is too thick, the reverberation effect will be seriously lowered. It is like listening to the sound in the prairie, and the sound is gone. Not only is the sound tedious, but the sound field positioning can have a very bad effect. Speaking of this, it is necessary to mention the role of tapestry. The tapestry is both a decoration and a sound absorbing layer. Not only beautiful and applicable, but also interchangeable according to the level of sound we feel.
In addition, the structure of the room and the internal arrangement should not be too symmetrical, otherwise it will easily form the standing wave and resonance of the local band sound in the room, destroying the balanced sound proportion in the sound field. Place the article - repeatedly trying to create a sound field. When the sound is moved back home, it is not a casual place to put a "POSE". For even the woofer, 5.1 channels and 6 speakers should have their own positions. The center speaker is usually the main force of the human voice, so its role can not be ignored. In general, the position of the center speaker in the visual center of the listening room is the best, for example, above the TV. However, due to the magnetic field of the horn magnetic cylinder and the television, as well as the interaction between the vibration of the speaker and the TV casing, direct placement usually produces a bad tone effect. Therefore, we propose that the center speaker can be placed on a separate stand slightly higher than the TV, and the position should not be too high. There are no front and rear restrictions on screens such as projection screens.
The position requirements of the left and right main speakers are symmetrically planned on both sides of the center speaker, and the spacing should not be too close. The front and rear spacing of the center speaker is preferably rounded with the listening position as the center. The up and down position is preferably 0.3 m above and below the center speaker in the center axis of the tweeter in the main speaker. Similar to directly on the ground or ceiling, the midrange position deviates from the optimal angle, making people feel that the sound field is disordered. If you are using a bookshelf speaker, it is better to have a stand in the absence of a speaker cabinet to ensure that the height of the speaker is moderate. The effect of the surround speakers is mostly to create the diffusivity and breadth of the sound field, so it is more suitable to settle at a position about half a meter from the top. The sound field requirements presented are based on your personal feeling that you stop adjusting. Due to the low directivity of the bass, there is usually no hard request for the placement of the woofer. If you are not a professional enthusiast, the position of the woofer need only be in the way. 
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