Experts puzzle: about the upgrade of home theater

Q: The old projector has to be upgraded! The original Optoma HD72, which was bought at around 20000 yuan, was an unknown screen. It cost 1000 yuan! Please recommend a total budget of 15,000 yuan. Please recommend one. 120 yuan screen and projector! PS: Please elaborate on the method of choosing the curtain, and the budget is not enough!

Optoma HD72

Optoma HD72

A: Congratulations! From the 720p era, you can directly enter the era of 1080p third-generation 3D projectors. Since the Optoma used in the past, today we continue to recommend this brand of products to you. There are two options here, one half of the 15,000 yuan, half of the money to buy a curtain, half of the money to buy Optoma HD25; another way is to buy the Optoma HD50 with 11000, the rest of the money to buy the curtain. Both methods have their own benefits! Optoma HD25 is a cost-effective machine, listed for one year, the price has bottomed out. Optoma HD50 new machine, whether it is contrast, brightness, adjustment professional or actual effect, all wins HD25 (see the "Experience" column for details). The problem here is mainly the problem of purchasing ideas. In fact, the replacement speed of the projector will be greater than that of the curtain, and the curtain has a level difference of 4,000 yuan to 7500 yuan. The better the screen, the higher the fineness and contrast of the displayed screen. .

Moreover, the curtain is generally not replaced, and the projector is extremely expensive. Therefore, the choice of these two options should take into account that you are replacing the projector this time, whether you want to use it all the time, or change it in two years. If you change within two years, recommend the combination of HD25. If you plan to use it all the time, we recommend HD50. As for the curtain, at this price point, the price/performance ratio of Judi, Unicorn and Yili is relatively high. When choosing the counter, it is enough to consider the product with a gain of 1.0. If you have a negative gain, there will be some problems when you look at 3D. If the gain is used too high, such as 1.3 or higher, the 2D brightness of the two projectors will be out of control, and black level performance may be problematic. Of course, this premise is used under 120 inches. If you cast 150 inches or more, that's another story.

Q: Amplifier Yamaha RX-V367, speaker Japan Akai AK-806, center AK-806C, surround AK-806S, subwoofer Tianyi SUB-10TD, projector Mitsubishi HC77-10S, curtain 3M 110-inch electric gray screen, living room Computer Jietuo HTPC. I felt good at first, but now I think the main problem is that the central position seems to be insufficient. Because there is a subwoofer, sometimes I feel that the center is not clear enough and mellow, the bass is enough for the time being. There are plans to upgrade the central, please give pointers.

Akai AK-806

A: The central set is not strong enough, sometimes it is often not just the reason for the center. In general, speakers and amplifiers can cause this. Yamaha RX-V367, originally a very low-end product, the power of the amplifier is actually the way of marking the Japanese products, and its actual driving capability is only the level of the domestic two-channel power amplifier marked 50W. So, you can't count on how perfect it can be to show your cinematic abilities. However, the bigger problem is your speaker. I can't find a little bit of information about these speakers by google and Baidu. I doubt the reliability of this speaker. So, if you want to upgrade it, I can give you advice because it's hard to know your upgrade budget and the level of the box itself. However, I still recommend some products for you, some products that are relatively easy to push and cost-effective. They are the RC52II, JBL studio 520C, KEF Q200C, and M6ci. These products can be bought at around 3,000 yuan. As for where to buy, of course, it is a versatile Taobao.

Q: I watched the audio exhibition a while ago. I saw a lot of Hi-Fi like to play all kinds of nails or mats. Are these things really useful? Do I have to buy a home theater?

Speaker nail

A: For mats, most home theater players don't use much, or simply resist. In fact, this is not right! Whether it is a speaker or a subwoofer, if vibration occurs during work, it is unfavorable to the movement of the horn. In the process of development, the speaker considers many factors, so that the front and rear displacement of the unit works in the most perfect position. This includes using a variety of materials to reinforce the cabinet and let those nasty resonances disappear. However, we can't avoid the subtle and undetectable vibration of the cabinet, and you can't guarantee that the platform will be transmitted to the speaker without the vibration of the platform. Therefore, such products as mats have emerged. Some of them use energy absorbing design, while others use a way to reduce the contact surface and block the vibration. Is the mat useful? My answer is useful, but not all! Hi-Fi players and manufacturers, never lack of metaphysical, a lot of useless products, we have seen.

Therefore, my suggestion is that if you want to pad, you will find a friend to borrow a test, and feel that there is an effect to buy again, no effect. But there is a premise, I have to explain - that is, before you start playing these mats, it is recommended to use equipment to see if your home equipment has been commissioned. If there are defects in the frequency response, then the significance of playing these mats is really not so big! After all, this is a category of lean and benefit, and the frequency response is defective. It is a problem of food and clothing. I suggest to solve this first.

Q: For a home theater, what is the most important thing? I saw so many surround speakers in the cinema, the amps articles of the Chinese home theater network, many amplifiers have achieved 9.2 channels, even Dolby panorama Sound, is it the most important thing to surround the speakers? Should you pay special attention to the purchase?

Homethether010

A: This kind of problem not only appears on the surround speakers, but also on the center and subwoofer. Here, I once again appealed that the home theater is a whole, and no link is not important. I don't think anyone can tell me, which is more important for eyes, nose, ears, and mouth? If there is no main speaker, then your front sound field will collapse; if there is no center speaker, you will not hear all the dialogue and nearly 70 % of the sound, if there is no surround speaker, you will not have a sense of surround and rear sound field, if there is no subwoofer, you will not be able to experience the feeling of shaking the ground. As for the surround speakers, I should not pay attention to them. The answer I give is yes, it must be taken seriously! But at the same time, please don’t ignore any other channel, because the relationship between them is just like the eyes and ears. What you can't give up. As for why the channel will be more and more, it is because it will make the sound source discover more points, improve the positioning of the sound and expand the sound field. As for the price, of course, it is to buy more speakers, and the deposit is reduced!

Q: I am going to buy a home theater recently. I have a look at the KEF Q series. The amplifier is still being selected. Consider choosing between Anthem and NAD. Please recommend it! In addition, please recommend a pair of main boxes for me. Line, I want to buy a good sound line, how to choose?

A: It seems that this friend is very fond of European and American style amplifier products. The KEF Q series is a good speaker with a clear sound and a beautiful appearance. Anthem and NAD are from Canada and one from the UK. They also have a clear distinction between them. Anthem's voice is fast and direct, the resolution is very good, and the sense of envelopment and sound field is excellent. I think it belongs to the type that sound image movement coherence is good, and the sound field is also broad; while NAD, the brand's power amplifier is more gentle and restrained, if it comes to the control of the subwoofer, the width of the sound field, the sound Resolving power, it loses a little more than Anthem. But if you talk about two-channel performance and driving ability, NAD will be more beneficial. Therefore, it is hard to say who these two amplifiers are better. You better listen to them for comparison. As far as matching is concerned, they are more suitable for KEF. As for the main speaker cable, I really can't recommend it to you, because it requires you to select the amplifier, listen to the home, see which direction the sound needs to be fine-tuned, and this has the meaning of changing the line. Finally, if your listening space is not regular, you need to have powerful EQ correction ability to make up for the shortcomings of space. Then please consider Anthem directly, the power of ARC2 is not catching up with other amplifier manufacturers.

If you also have questions or problems related to home theater, please visit the Home Theater Forum (http://) to communicate with the fans, or add the Chinese Home Theater Network official WeChat: cnhifi, we I will answer you one by one.

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