Building an Entry-Level Home Theater: Concepts, Equipment and Deployment

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When building my own home theater, I inserted a lot of information, and some of my experiences were shared. I hope everyone can avoid detours.

First, a set of effective home theater with some feelings, you have to at least prepare the following equipment:

5.1-channel speakers (front left, right, center, surround left, right, subwoofer), a power amplifier, a TV not less than 60 inches or a projection screen no less than 100 inches with projection of DLP technology instrument.

Speaker knowledge:


1, it is best to buy a dedicated passive speaker package;

2, the best speaker unit is not less than 6.5 inches;

3, choose the speaker, it is best to select the unit model size of 5 boxes exactly the same, some low-end suits, the front is 6.5 inches, the back surround becomes 4 inches.

4, theater speakers, the most important two boxes are the middle box and subwoofer . A good centerpiece must be a big caliber. Only a speaker with a large caliber can obtain the natural white sound of a white theater.

5, subwoofer is very important , it is important if the budget is not enough, would rather not buy, until you save money in one step, good artillery can get clean and fast bass, and will improve the quality of the main box. Because there is a subwoofer system, the main box can be set small so that it does not play back sounds below 80Hz or 120Hz, but is provided by the subwoofer, so that the power output of the amplifier will be significantly reduced, and the overall sound quality and transient response will be improved. .

6, can wear the best tube lead, followed by the line to go to the corner, and the line brush wall paint more hidden, completely recommended wireless transmission + active program, wireless transmission sound quality is usually poor, delay is a problem.

7, subwoofer according to the number of square meters in the room, 15 with 8-10 inch, 15-18 with 12 inch -15 inch, 18-inch above strongly recommended on the 15-inch subwoofer. The square meter is the complete open area of ​​your audiovisual space. For example, if your living room is 15 square meters, but there is an open balcony of 5 square meters next to it, then you need to calculate the balcony area. If there is a 1 square meter storage room, then Unless you close the door to the storage room, this 1 square meter must also be counted.

8, carpets, thick curtains, fabric sofas, fabrics of various interiors will have a positive improvement in the voice of the average family.

9, do not consider any impedance matching problem, unless you use a mess of what stage speakers.

Audio purchase:

Imported brands: Jumbo, JBL, Jazz, Yamaha, etc. When purchasing, one is to look at the unit size and power, too small is not recommended, the general set of effective 5.0 about 8000-10000 yuan

Basically, domestically produced Huiwei, there are some small personal brands that do a good job, with little choice. But cost-effective. The basic 5,000 yuan package effect can actually be equivalent to more than 8,000 imported products. I have actually heard a lot of it, and finally I bought it domestically.

Subwoofers, this choice is more extensive, not only the brand, but also the size, as well as inverted or closed.

Brands are SVS, Sun, JBL, Velideng, major earthquakes, thunder and so on. Made in China, there are old Qin, supersonic, devil and so on.

Which brands of these guns have high-end and low-end, in fact, as long as you care about the price, in the price range you accept, choose several alternatives, and then go online to check the word-of-mouth. Domestically produced products are more cost-effective and have the same effect as price points. However, they lack high-end products and are only good in low-middle circles, but they cannot compete with high-end goods imported from various brands.

In general, subwoofers are not recommended for domestic production of less than 4,000, and imports are not recommended for less than 8,000.

In addition, the mainstream artillery imported is a bit confusing, and fake and parallel imports have to be rehabilitated. It is still necessary to take a look.

Recommend a few I actually heard many times the price is not expensive:

1, Jamo S606 set, be regarded as the price of imported brands can also be. 5 inch unit



2, domestic Swans, configuration is not bad, dual 6.5-inch unit, Swans features, need more power amplifier.



3, Lao Qin E6, 4520 yuan, double 6.5, low-end amplifier is also a good push.

Subwoofer recommendation :

Imported goods:

1, Sun, 12-inch subwoofer

2, SVS, 12-inch subwoofer

3, Qin Chao 3115D, 15-inch domestic subwoofer, about ¥ 4880

4, Supersound EQ15, 15-inch domestic subwoofer, to buy high-power version , about ¥ 5000 in the beginning


Imports are still good, quality is stable, but the price is expensive, the same price can buy domestic 15-inch heavy subwoofer. I personally recommend it, and the small room map can be saved, so I bought the low-end artillery of imported brands.

Large room or pursuit of effect, buy domestically-made 15-inch gun

Tyrants directly import high-end guns.


Power amplifier knowledge:



1, now the power amplifier, split the merger machine and before and after the two kinds of play.

2, Consolidator, also called home multi-function audio and video receiver. Simply put, it can access six or seven kinds of equipment to more than a dozen, output to a television or projection, and drive passive speakers;

For example, you can use Blu-ray DVD players, HD boxes, PS4 game consoles, computers, Gehua cable set-top boxes, CD players, and vinyl record players. These devices are connected to the amplifiers at the same time, and then listen to which source is selected on the amplifier remote control.

3, before and after level, is a front stage with a rear stage, the pre-level function is similar to the merger machine, but can not drive the speaker, because the front stage does not contain power amplifier. In the latter stage, a high-quality, high-current output amplifier is used to push the speakers.

Before and after the class is usually more upscale, the pre-class will use more upscale chips, the output sound quality is better, support more interfaces, and the latter level is also a better sound quality, greater thrust, can drive high-power speakers or some difficult to push Box.

Power amplifiers for purchase, Power amplifiers for Japanese, European and American systems, Domestic

Japanese is absolutely overlord, mainstream brand:

Onkyo, Denon, Marantz, Yamaha, Pioneer

These brands have their own characteristics. According to some word-of-mouth links, Onkyo has a strong musical taste. Tianlong is a hot sounder, Marantz is a HIFI player, Yamaha has a good sound field, and the vanguard is a driving force.

But now there is not so much difference between the same generation, the price of the same equipment, the price, performance is also close.

Buying skills, most people will only buy the merger machine, because the cost is limited, the merger of power is slightly smaller, so try to buy power, and the merger of the former part of the same, each has its own advantages, and even Tianlong Ma Lan The former board is the same (in fact, the two companies have already merged)

In general, each model in the price of 4-5 thousand (Taobao parallel price) is regarded as the low-end main model, the thrust is enough to allow you to use for a long time. Do not recommend low-end products, the thrust is not enough, the interface is not enough, the function is not enough.

Personal advice is not to chase the latest equipment, and sometimes it is more cost-effective to buy previous generation or even previous generations of equipment. For example, Onkyo has 818 on the previous generation, 828 on the previous generation, and the latest 838. It is actually a next-generation power amplifier. The CPU supports panoramic sound and many functions, but it is not actually necessary. The average user has very few opportunities to use these functions. Instead, it is the power amplifier. The total power of the 818 is 720 watts with the 838, but the 818 is the largest Can output to 230 watts, and 838 is only 215 watts, the distortion of both rated power is 0.08%, indicating that the latter generation has apparently made a little shrink.


In addition to Europe and the United States Department of Harman Kardon prices have not yet reached outrageous, most of the rest are more expensive, such as Lescon, ATL and the like.

Europe and the United States Department of Power Amplifier is fully marked, the Japanese 70-watt output of the machine will dare to label 200 watts, while Europe and the United States 200 watts can really output 200 watts at any time. ;


There are also many domestic power amplifiers, and the bigger ones are Tianyi. There are giants like the predecessors, but domestically-made predecessors and the like are not recommended, especially the former ones, because they check various kinds of information from the Internet. From the feedback point of view, it is really not very good, and domestic-made post-classes do more, because the technical content is relatively low, mainly depends on the circuit design skills and materials, and the power is also fully marked.

Domestically-made Tianyi, Laoqin, Sonic, etc., have some reputation, and the price is much lower than that in Europe, America, or Japan.

In general, when you buy a merger machine, it is best to buy a machine with a front-level output function. In this way, you can directly buy a domestically produced secondary class, and you can immediately obtain double the power, which can promote a lot of large-caliber high-power or Difficult to push the box.

Personal recommendation: Marantz 5010 and 6008, 5010 is an upgraded version of 5008, I now use 5008, not bad;


6008 is the last generation of high-end goods, higher than the 5000 series, sound quality and support of high-end features to be more, because it is a few years ago, so the high cost performance. This is also very recommended.

The power does not look at the 7200 watts of the title, which is a deceptive Japanese JETIA standard and has no reference. To see the "power consumption" or "rated power," or "maximum input power," in the parameters, you can see that the Marantz 5010 is 650 watts of power. In other words, it consumes a maximum of 650 watts, throwing away the decoded part, for example, consumes 50 watts, and 600 watts is left for the amplifier, so don't think it has written 7200 watts as much as 1400 watts. Actually only 600 watts.

TV knowledge:


1, the current 4K is not important, 1080P currently the highest Blu-ray original disc, only to retain a next-generation audio track, a movie to 30-40G space, 4K is 4 times the capacity of 1080P.

2, it is best to support the CEC command to pass back, the operation will save some, especially to look at the compatibility list. Of course, this is not important.


TV is not recommended....

Projection knowledge:

1, It is best to use a projector that is designed for home theaters. This type of projector is bright and the actual output brightness is very good. However, general home projectors for commercial projectors and smart projectors do not actually meet the requirements of home theater.

2, projectors used in cinemas are quite expensive. I went to a physical store to see a lot of kinds and found that the results are good. Basically, they are all models with more than 6000 yuan. The low end is not recommended to buy.

3, the projection screen is also very important, an excellent 120-inch curtain to 2000 to 5000 range. Actually, I see several screens, the best is the gray screen, this screen has a lower reflection brightness, but the color texture is better. When it is recommended to buy, actually go to see, no condition to actually watch, first on the projector, online shopping when the merchant to send a block of samples for comparison.


The cheapest projection recommended this: Optoma HD 25 LV

Optoma has an HD26 that is an upgraded version of HD25, in fact, is a simple version. HD25 E is also a simple version. The HD25 is a classic generation with 25, 25E, and 25LV versions. At present, LV is better to buy, 25 original version is not easy to buy.

The difference here is probably the bulb's brand and power, the six-segment color wheel and the like. But just remember to pay for the penny and the goods.


Second, video source

A large block of U.S. movies will generally be released within 3-5 months after release. The following formats will be available before Blu-ray.

CAM, HDCAM: The gun version of the VCR or HD recorder.

TS: It is also a gun version, but the audio is recorded using a headphone jack that some cinemas have prepared for people with poor hearing.

TC: From the original movie film ripping with some devices, the picture is dark. But it is better than the gun version, and it is rare.

DVD SCR: Preview DVDs that are not officially available, usually have rolling anti-piracy captions.

DVD RIP: Final DVD, not HD, but 42-inch and below TVs can still make do.

WEB-DL: High-definition pay-per-view video sources that are generally sold in online stores, will be available in the first few weeks of Blu-ray, at least 720p, and definition is acceptable. WEB-DL is sufficient for all kinds of movies with ratings below 6.5%. , such as LockOut.


BlueRay Blu-ray Disc will be available later, with the highest definition.


Third, audio source

Dolby Dolby is the Chinese name of Dr. RMDOLBY in the United Kingdom. He established the Dolby Laboratories in the United States and invented Dolby Noise Reduction Systems, Dolby Surround Sound Systems and many other technologies, which have produced huge impacts on movie sound and home audio. Impact. The Dolby technologies commonly used in the home include Dolby noise reduction systems and Dolby Surround sound systems.



DTS
Founded in 1993, DTS is headquartered in Calabasas, California, and is a top multi-channel audio technology vendor.

The current mainstream format for multi-channel audio in movies is Dolby and DTS.


THX

It is a certification that is developed by Lucasfilm to provide quality assurance for home theaters and complete specifications for home audiovisual equipment (home theater). Unlike the international standard, the THX standard has a tolerance range for most standards, but THX does not have a tolerance, but only a minimum requirement. It must be passed in order to be qualified and eliminate artificial distortions.


The word THX was coined by George Lucas's first science fiction film "Five hundred years later (THX 1138)". As early as 1982, Lucasfilm established the THX studio, specializing in film recording projects. Actively assist the cinema in improving the sound system. In 1986, Lucasfilm Company fully cooperated with audio manufacturers to invest in research on the quality specifications of home theater equipment. In 1990, it proposed THX certification service (covering home theater equipment, movies, studios, computers, games, etc. ).


This certification specifies the parameters such as brightness, uniformity, contrast level and sound pressure of the cinema screen, audio frequency response, channel balance, room reverberation time, and sound insulation.

Simply put, a THX-certified theater is a terrific cinema. Whether it is a movie theater or a home theater, it can achieve excellent results and can fully express the sound effects of the movie. However, THX-certified equipment is very Excellent equipment


Next generation

This is the meaning of the next generation. In the era of ordinary DVD, the capacity is limited, and the audio format used is usually Dolby 5.1 (also called Dolby AC3) or DTS. All of them are lossy codes. Dolby is a 12:1 compression ratio. DTS is a 3:1 compression ratio. When compressing, it gets a small file size by deleting many details.

Blu-ray technology is very developed now, and the capacity of a dozen G of a disc is enough to put down the lossless audio, so there will be next-generation audio.

Next-generation audio includes: LPCM (lossless compression), Dolby Digital Plus (lossy compression), Dolby TRUEHD (lossless compression), DTS-HD High resolution (lossy compression), and DTS-HD Master Audio (lossless compression).

Most modern Blu-ray discs are Dolby TrueHD and DTS-HD Master Audio (DTS-HD MA).


Once again: Dolby Sound, DTS:X

This is actually one or two years since Dolby and DTS were introduced.


This format is object-oriented audio coding. It is the sound calculated from the description.

For example, in traditional recording techniques, I have to record a person to speak and go from left to right. A lot of microphones are needed and they are deployed around, so as to record where the speaker is facing, the speaker's voice is from left to right, and the voice is strong. The change.

But object-oriented technology can be greatly simplified, such as recording only the voice of speech, and then adding the description: "The voice moves from coordinates (10,12) to the coordinates (19,15) at a speed of 0.6 meters per second, and 3-5 seconds after a pillar sound is obstructed by 45%"

Then you can calculate what kind of sound each speaker actually emits while watching a movie. And in the 5.1 system 7.1 system 5.1.4 system and other different systems, can achieve the best simulation results.

In traditional recordings, 5 tracks are to be prepared for 5 tracks, and 7 tracks are to be prepared. However, the object-oriented track is universal. The final sound is calculated by facts rather than recorded in advance. Even for a 100-speaker theater, it can give each speaker the correct sound.

(Of course, the actual situation is very complicated, and there is a difference in the home version of the theater version, not in-depth development)


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Arranging a home theater

Basic knowledge:

1, buy equipment.

2, whether it is 5.1 or 7.1, it is best to plan a good line when the decoration; if you do not pre-wired can only take the corner.

3, the amplifier has a lot of heat. If it is placed in the TV cabinet, it must have excellent ventilation, otherwise it will not be placed in the cabinet.

4, generally do not recommend the use of full-powered speakers, because you not only need to pull the signal line, but also pull the power cord, sound pressure adjustment, the quality of the cable is very troublesome.

5, ordinary families use high quality 4 square strands of cable, fever line is not necessary.

6, confirm the power of the home situation, zero fire to the three-wire connection is correct, in particular, zero fire can not be reversed, the ground must have. You can buy a power detector to test it.

7, It is recommended to use a filter socket. Don't worry about what influences dynamics.


Actual operation:

TV:
First, the TV is in place. It is recommended that the wall be mounted or close to the wall so that the future can be easily upgraded to a curtain (screen in front of the TV). If the TV is too far away from the wall, there is no way to upgrade the screen later.

curtain:
It is generally recommended that the roof be a lamp pool. The curtain is hung in the interior of the lamp pool. The motor runs on electricity and the lamp pool opens a gap. This can be used for invisible installation without affecting the appearance.

Speaker:

The main box is generally a floor box and can be placed directly.

Around the box is generally used 90 cm bracket, when you sit in the emperor, the tweeter around the box should be slightly higher than about 10 cm.

The neutral box is recommended to be hung above the TV, slightly higher than the emperor's position, and points down to the emperor's ear. It is not recommended to put it on the TV cabinet or on the ground. The actual measurement will affect the voice and the overall feeling, using tens of yuan Steel speaker hanger hangers are available. The wall paint can be used to paint the hanger into the wall color, and then put some decorations on the center box to block the hanger.

But this depends on the actual situation. In fact, most families are not willing to do so. If your TV is too high or too big, you can't hang it on top of the TV. If you use a curtain, you need an expensive sound screen, so you can trade it off.


The subwoofer is the most troublesome, involving the standing wave problem, so it is necessary to repeatedly adjust the position of the set and the muzzle, find an optimal position, try not to let the muzzle parallel to the opposite wall, although this placement is the most beautiful . The adjustment of the subwoofer can write a book, and it is no longer enough to say that there are too many posts in various movie theater forums. It is recommended to carefully look at the subwoofer 6 points to see the quality of guns, 4 points to see the debugging level.

The figure below shows the position recommended by Dolby, and the DTS and THX standards are similar. In fact, I have tried all kinds of positions. As long as it is the position recommended by these companies, it sounds like no problem at all, and there are no advantages or disadvantages.

Power amplifier:

Power amplifier and TV connection must use HDMI.

The connection between the media source and the amplifier must be HDMI with HDMI. Try not to use other interfaces.

HDMI is the best connection method available today. He is an audio and video composite interface that can transmit audio and video at the same time.

It is recommended to purchase HDMI cables of 1.4 and later specifications. The length of the wire is as short as possible. Try to buy a quality HDMI cable. This cost cannot be saved.

HDMI cable can perfectly transmit the high-definition picture of Blu-ray disc now, without any loss. And only the HDMI cable supports the next-generation source code transmission. In simple terms, the player does not decode and directly throw the source code to the amplifier to decode. The power amplifier has a professional decoder chip, not only perfect lossless, but also a variety of sound field technology, decoding The effect is very good.

The power amplifier should run an automatic calibration. For the method, see the instructions of the power amplifier. The power amplifier provides a microphone on the emperor's position, and then automatically calibrates the frequency response, sound pressure, delay, and phase of all speakers.

The center speaker should be set to a large sound pressure better than the other channels + 3 dB. Because the home stereo is unable to obtain the kind of clear and honest vocal sound of the theater, the vocals of the theater are all sent out by large speakers. Therefore, increasing the ratio of sound pressure and expanding the playback frequency will improve the effect of vocal dialogue.

If no subwoofer or subwoofer is less than or equal to 12 inches, it is recommended that all speakers be set to large.

If there is a subwoofer, depending on the size, it can be decided whether the main box is set to large or all is set to large

If the main box is small, such as a single 5-inch unit, the subwoofer mode is suggested as LEF+Main so that the subwoofer also emits sound that should have been emitted by the main box. (LEF is the bass channel, which is the 0.1 track in the 5.1 system)

Turn off night mode and turn off Dolby Audio Compression (Marantz). If it is an Onkyo amplifier, when playback starts when playing Dolby TrueHD, you need to directly enter settings and turn off dynamic compression or night mode. This is Dolby's concept of Dolby's promotion (all Japanese power amplifiers have different closing methods), which will greatly compress the dynamics, making the next-generation audio not as good as MP3.


player:

Blu-ray DVD, in fact, relatively unpopular, because it is not cheap, genuine Blu-ray disc looks like two or three hundred and a bit expensive outrageous.

The high-end Blu-ray DVD player is currently recognized as the OPPO, which is the OPPO that makes mobile phones! Only Blu-ray machines do not make the domestic market, and its high-end 105D sells 11,000. The quality of the sound quality is very strong, even if the sound quality is not used to decode the output itself is very strong, only with a post-class effect is very good.

Box: Now that the box is basically more than 600 yuan on it, do not buy cheap, and sometimes get stuck. And it depends on the output of the next-generation source code. But also with USB3.0 interface to connect large-capacity mobile hard disk. Personal use is a quad-core box xx sea, other features are normal, the firmware itself is not awkward, but to support the next generation of source output, subtitle size position delay or advance adjustment, support Blu-ray disc mirror live, put more than 40 G The Blu-ray disc is not card, so it is enough.

The box I am currently using the sea Meidi Q5 quad-core, Jingdong only find this: called four generations, and a lot more expensive than me, it is estimated that there are 618 discounts.

This box is good, what subtitles can be set more, there are next-generation source output, solution Blu-ray more than 40 G card is not card, there are three points enough.



Get movie:

With economic strength, it is recommended to buy genuine copies.

Secondly, you can find some PT stations. This topic is more sensitive. Please search for the PT rules yourself.

A good movie is recommended to download Blu-ray original disk to do the collection, the general Blu-ray high-definition capacity is an average movie 30-40G, compression a little bit of quality, there are 15-20G also completely visible, 8G-10G or so, poor picture quality A little bit but the general movie is fine and the picture quality is good enough.




other:

Although I always recommend more expensive equipment (although it can only be considered low-end), these things are stable and have excellent results, and can achieve a very good experience.

The equipment that is too cheap can only be regarded as useful, not to mention too good results. In one year, there are not many films that are worth seeing. Maybe there are only eleven and two. If the home theater experience is too bad, then it is really Better to go to the cinema.

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