China Home Theater Network (): Although everyone knows that it will not be rewarded without paying, but in the purchase of home theater, it is never worse than the input and output than hope. People who are too high, then how to buy a home theater correctly, maybe the following questions and answers can give you some inspiration. To be precise, most of the users who want to buy a home theater are not hardcore enthusiasts. In general, the most like questions to the editorial department are often small white users. In the editorial department, we often receive phone calls about purchasing the various components of the home theater. So, we made such a Q&A highlight today, and posted some of the questions we usually collected and our answers here. I believe that for more readers, he will also have a reference role. Q: I want to buy a satellite-based home theater with a budget of 6,000 yuan and a use area of ​​20 square meters. I went to the local business office for advice. They said that the small box is still not as good as the floor box. I suggest that I buy a floor box. How do I choose? A: If the small box of the satellite speaker, watching a movie must be worse than the floor speaker, this is obviously an unprofessional answer. In fact, the effect of a home theater is very good, and it has a lot to do with the incompleteness of the home theater system. 6,000 yuan to buy the floor-standing speakers, basically no budget to buy a subwoofer. Moreover, the entry-level floor-standing speakers of all major brands, the units used are relatively cheap, so the sound quality will not be very good. In terms of this price and area of ​​use, I would recommend that you purchase a satellite speaker system, which will not only get the standard 5.1-channel speaker, but also have a beautiful appearance, and the requirements for the amplifier are not high, and often get better use. . Q: I think the subwoofer is not strong. The merchant recommended me a 21-inch subwoofer called NUX. The price is 30,000 yuan. I would like to ask how this subwoofer? A: We sent Baidu and Google. We really can't find a subwoofer called NUX, and sell 30,000 yuan in 21 inches. However, we have some words to say to you - first of all, the size and size of the subwoofer does not mean that he can produce good results in your home. If your audio-visual room is only 20 square meters, then you buy a 21-inch subwoofer and you are asking for it. I promise you will hear the thundering bass. Secondly, if you have a budget of 30,000, I would recommend you to buy two subwoofers of 12 inches and 15,000 yuan, and then ask the professional debugging personnel to go to the door to debug, so that you can get good results. Finally, this does not know what brand sells 30,000 things, you can not directly consider it, it is obviously the business of your money. Anthem amplifier's own sound field correction function can help users completely set everything from speaker to subwoofer. Q: I am currently using the Jieshi RF-62 set speaker. I am currently using it. I feel that the center sound is not thick enough. I want to upgrade the mid-range to RC-64II. I wonder if this upgrade is appropriate? A: Replacing the mid-range and subwoofer is indeed two shortcuts to improve the sound performance of home theaters, but these two shortcuts are not suitable for anyone to go. The original mid-range of the RF-62 is the RC-62, and the RC-64II is used with the RF-7II, RF-83 and RF63. This combination is for a reason. The first three voice information is best consistent, in order to get a perfect front sound field performance, so the RC-64II five-unit large center is also equipped with a large floor box. If you put the RC-64II upright, you will find that it is not much shorter than the floor-standing speaker RF-62. In fact, the RF-64II slave unit magnet, unit material, crossover, and wooden box materials are completely different from the RF-62. Their sounds are different. If you give the RF-62 with the RC-64II, this is a relatively malformed configuration - the price of the center one has exceeded one pair of RF-62, and his sound density and information volume far exceed the main box. It is not appropriate for a theater configuration that speaks harmoniously for each channel. At the same time, a set of amplifiers that can drive the RF-62 home theater is 100% incapable of pushing the RC-64II. The RC-64II, which is not good, sounds like a thunder, so if you don't plan to upgrade the amplifier, or if you don't plan to upgrade the main box in the future, then it is recommended that RC-64II also give up. Q: Is the crossover point of the subwoofer set to 80HZ? A: This depends on the actual speaker used, but in general, the crossover point of the subwoofer is preferably set to 120Hz, because Dolby audio coding is mixed with information below 120Hz in the LFE signal. If the subwoofer's crossover point is set at 80Hz, it will mean that the LEF signal of the 80Hz~120Hz segment is lost. In addition, if your speaker is a small satellite speaker system, the subwoofer's crossover point may be set to about 150Hz. Because the lower limit of the main box of the small satellite speaker is very high, the low frequency part should also be supplemented by the subwoofer. At the same time, it is precisely because of this. You will see that the original subwoofers of small satellite speakers are mostly 8 to 12 inches, because subwoofers below 12 inches have no way to broadcast the sound of the 120Hz to 200Hz band. Q: Is it better to buy a high-gain screen for 3D? The merchant recommends 1.5 gain to me. Is this gain enough? A: Whether to use a high-gain screen will be determined by the projector you choose and the size of the screen you want to deliver. If you choose a model with superior light output capability, such as Epson's CH-TW9200, you only project a 100-inch screen and choose a 1.5-gain screen, so I am sure you will encounter some problems in use. Because the high-brightness projector is originally designed for large screens, if your screen is not too big, then the general problem of 3D is not big, but when watching 2D movies, it will show bright because the light output is too strong. A dazzling picture. At the same time, the black level of the picture will be greatly affected. So, this is why you will see a lot of high-end curtains, there will be a gain configuration of about 0.8 on the gain of 80 ~ 120 inches. So, instead of watching 3D movies, you must have a high-gain screen. If you use Epson's CH-TW9200, even if you are 150 inches, you can get a satisfactory result with a 1.0-gain screen. Q: Watching movies, is it good to choose a THX-certified speaker? Does the THX speaker represent a high-end? A: The answer to the first question is yes. Watching movies, choosing a THX-certified speaker can be seen as a guarantee of quality. But the premise is that there is a good acoustic environment and use THX certified amplifiers. But THX speakers don't all represent high-end. In fact, THX's speakers are the cheapest at around RMB 20,000. Most THX-certified products are concentrated in the range of less than RMB 100,000. As far as the price distribution of speaker products is concerned, such speakers can only be regarded as mid-range products at most. If you analyze each brand of THX certified products, you will find a set of THX speakers, which is just the price of a pair of their reference speakers. However, THX speakers also have special high-end products, such as JBL's Synthesis, that is the nobles in THX. So, to be precise, THX speakers don't represent high-end products, but THX speakers do have high-end products. Q: The budget for my purchase of the curtain is 3,000 yuan. I value the quality of the audio and video. Some people recommend me to buy the sound curtain. The size I need is 120 inches. What do you think about this question? A: A good sound-transparent screen can indeed add a lot of color to the home theater! Because the sound-transmitting screen can make the dialogue accurately from the middle of the screen. A good sound-transparent screen gives the viewers a very good experience. Looking at the most expensive products of the famous screen brand, it must be a sound-screening. However, this does not mean that when you buy a low-priced screen, the sound screen is suitable for everyone. If you are a friend who is more concerned about the quality of audio and video, we will never recommend him to buy a 3,000 yuan cast. In general, the 120-inch non-transparent screen that you bought at 3,000 yuan will not be a very good product. And with this money to buy through the sound curtain, for those who demand high, that is the feeling of spending money to buy sin. Because of this super-priced translucent screen, the loss of brightness, color, sharpness and contrast will be more obvious. At the same time, you will find that the speakers are placed behind the curtains, which will become dull and not clear enough. This is because the sound transmission rate of the curtain does not meet the standard. This is why high-end translucent screens are certified by THX and ISF. These two certifications ensure that the sound-transmitting screen you use has less impact on sound and picture. Q: I recently wanted to purchase an amplifier with a budget of 15,000 yuan. The forum asked the netizens and got two suggestions. One is to buy a high-end amplifier directly, like the Tianlong 4520; another suggestion is to spend 6,000 yuan to buy low-end products, and 9000 yuan to buy a multi-channel post-level. Please comment on the pros and cons of these two options! A: These two programs do have their own characteristics. I think which solution to choose is directly related to the speakers you use. Tianlong 4520 has a wealth of functions, decoding power is very powerful, the sound is delicate and impactful. But if you use the floor-standing speakers that drive multiple units to eat current, then the dynamics of low frequencies and sounds may fall. The purchase of the combined amplifier and the latter stage can get a much stronger speaker drive capability than the first one, and drive the speaker more calmly. However, the merger machine is not a professional predecessor, so the sound refinement and decoding ability of this combination is not as good as the Denon 4520. If your speaker is a better-driven speaker, then I think the first solution is suitable. If your speaker is a speaker that is not very good, then the second option is more appropriate. Q: I have a subwoofer that I bought 10 years ago. The price I bought was about 15,000 yuan. At present, the cell suspension of this subwoofer has been powdered and can be replaced locally, asking for 800 yuan. A friend said that my subwoofer is not as good as the current 6000 yuan product. This surprised me. I want to know now, is it better to repair a subwoofer or buy a new 6000 yuan? A: A lot of things happen in 10 years, including changes in the style of home theater speakers. Many products from 10 years ago, from today's point of view, have not met the current requirements. The next generation of audio tracks has a powerful amount of data, which greatly increases the dynamics and resolution of the sound. This puts new demands on the dynamics and sound pressure of the subwoofer. The subwoofer 10 years ago, the suspension of the unit is generally soft, and the impact of the gun is not strong. Now, the subwoofer is not comparable to the old subwoofer in terms of dynamics, volume, and dive. No matter the unit, the box, the structure and the power amplifier of the gun, there have been obvious progress. Therefore, I suggest you not to fix it. Throw a new one, it will be happier. To sum up: Buying a home theater is to satisfy your own needs. It is the so-called one-dollar and one-off goods. It is a big loss for greed, a big loss, a life, a taste of life, why bother to care about the price? Of course, don't stick to the equipment, get deeper and deeper, you can not have a fever, and pursue your own happiness with a normal heart. 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