【 Weak current College 】 home theater applications and practical guide

Home theater system is setup and adjustment, the majority will run properly, of course, sometimes mountains are some problems. Some of the problems mainly in installation, negligence or lack of experience. Before the call, the user is a good idea to carefully check whether there is a mistake on a connection, and use the exclusion check the entire system of song. Usually most of the problems as long as the user's knowledge and understanding of some of the equipment works, and the reference manual of guidance is fully free to exclude, but sometimes all-Western regulation, will Hill is satisfactory results, then finally had to ask professionals to solve the problem. The following is what I deduced in home theater systems in the more common problems, and I hope to everyone to help.

1. TV reception is not working properly
If you have problems with the TV reception is not good, first to see the ground (wireless), cable, satellite, or with set-top boxes and televisions are connected properly. If the user has a standard definition set-top box, look at the TV is connected to the appropriate connection port, and is translated to the corresponding channels in the region. If the user has a high-definition set-top box, television and HDTV-high definition TV, then take a look at the TV set-top box is via HDMI, DVI, or component video port connect to the TV. In addition, if the HD AV signal through a home theater receiver connected to the TV, then, should confirm that the home theater receiver is turned on, and adjust the input level to the right, in order to ensure a smooth arrival TV HD signal.

2. the programmes of the poor quality image screen

If the image on the TV screen snowflake, this can be cable connection is not working properly, or the connection of the contact is not good, can also be used by cable is faulty materials. The user may wish to try substituting different cable to see whether the result is improved. If the user is in cable TV reception mode, so that cable operators provide free services, on-site check cable wire or in connection with what went wrong. If you adopt through antenna ground (wireless) television receiving mode, so that users can use the antenna location and direction of change to improve the TV reception, or simply for quality better antenna a try.

3. image screen color distortion or colorless

If the image is displayed on the screen is black and white or color distortion, the user should first colourless to test whether all the different signal source to enter their colors are displayed image is not good. If Yes, then you should enter the TV set the corresponding function mode, verify that the TV itself is the color settings to the normal range of parameters, whether in an optimal state, if it is not good. If the color of all the settings of the TV set on both have had good, then the next, you can view it via the component video port to connect the DVD player to the TV channel on the existence of a problem. Make sure that the DVD player to component video port on the red-green-blue and TV component video port connection is matched, because if the system of placing regional light dimmer, behind the system be cabled inch green blue is very hard to read, very easy to make a mistake, this error is common, often occur.
4.HDMI connection failed

Users use the home cinema is sometimes appear such a situation, when the DVD player (or other signal source device), through its HDMI output for connecting to TV set and HDMl enter two devices are turned on, the TV set no image appears on the display. This, despite the sometimes due to the HDMI port connected a DVD player and television, but they cannot recognize. This issue of the treatment plan can take one of the first turn on the DVD player, turn on the TV after; or turn on the TV, turn on the DVD player to be addressed. If the connection still fails, the user can change a HDMI cable and try again. If you swap cables still does not resolve the issue, then, the DVD player manufacturer advice, preferably on a DVD player manufacturer's Web page, take a look at what the firmware upgrade of information and, if so, the user can usually be downloaded directly to a CD or by email.

5. the projector suddenly shutdown

Projector in the work process can sometimes occur suddenly shuts down, usually there are two main reasons: first, the user may accidentally cut off power to the projector, then the user can check is not a human factors cause the projector off, if not, you must be experiencing problems with the projector itself. In most cases, this phenomenon is most likely caused by thermal protection. In some high-end projector, in order to extend its life, the regular design a self heat protection function, once the work is its internal projectors have too much heat generation, the projector will turn off automatically in immediate protection status, while in this State, the projector on any external input control is not used for any response, it appears that the sui conditions; users don't have to worry about projection opportunity suddenly broken. To resume, the user can projector automatically shutdown after about half an hour, and then follow the normal boot sequence to open-projectors, projector to work properly.

6. surround sound playback effect is good

Feel that surround sound playback is not optimal, the first thing to do is to check the signal source, TV signals and other video signal source surround sound source, and then check the speaker connections, and are confident that their channel and polarity is connected correctly. The next user will check the signal source and the connection to the home theater receiver, cable or satellite set-top box. If the connected DVD player (or other signal source device) and home theater receiver using an RCA analog stereo cable, users can carry Dolby Pro Logic II, IIX, or DTS Neo: 6, standard surround sound settings. In these systems, through the audio signal processing, any two-channel audio signal sources (including CDCDs, cassette tapes and traditional analog vinyl album) are available to users a realistic surround sound effect. Users need to know is that even if the sound source is true surround sound format, the surround sound effect and not every second has been rendering is perfect. In a dialogue-based scene, often most sound only from the mouth to the speaker, and program sources stop playing when the speaker is often accompanied by some ambient noise. Action movie in explosion, people shout and other sounds, or an entire movie music is more vocal on the side and rear speakers.

7. the projector power without any response

Home Theater projection methods in use to watch the program users now not uncommon, but because the projector expensive, many users the opportunity to contact it is not very much on the projector's knowledge and understanding are relatively limited in the use and operation tends to occur a broad range of issues, the projector in power-no reaction is one example. This phenomenon demonstrates the projector's power supply unit possible problems, maybe the projector internal power supply, or perhaps there is an external power supply. To this end, the user can check the projector's external power supply specifications and standards of the projector, you want to know the external power supply outlet is not grounded or projector using the power connector is not a projector are random equipped could cause projector power input is not working properly. Once you confirm the plugged in properly, you can determine the projector internal supply circuit is damaged, you have to try to repair or replace a new projector internal power supply.

8.DVD does not play

This failure has several causes. One reason is that some DVD players, in particular the 2000 years ago launched the inherent characteristics of the model itself decides it cannot play a recordable DVD disc. If the user play the self-made DVD disc trouble, please check the self-made DVD disc format is of DVD-r, if not no play occurs; if you play a disc also DVD-R format in trouble, it may be blank DVD-R CD brand. Although there is no guarantee that all DVD players can play a special homemade DVD discs, but most of them but should be able to play DVD-R CD. DVD does not play for another reason is that CDs with the player's region code do not match, or when you choose the wrong video system. As for playback appears to jump on and hold reasons, mainly to the quality of DVD discs, most of the CDs through countless plays at the top of some injury, oil or fingerprints, these flaws can cause DVD Player DVD on tracing errors. Does not play there is another reason, maybe the DVD player's lens dust adhesion, users can try to clean it. Of course, you can use the same method on the problem with DVD video and CD cleaning.

9.DVD logger cannot simultaneously recorded edge on edge

And VCR video recorder, users use the cable or satellite set-top box to receive television signals, is not in the DVD recorder to record one program while watching another TV show. This was mainly the majority of cable or satellite set-top box each time by a separate cable can only download one channel's program, in other words, a cable or satellite set-top box determines which channels program feed to VCR video recorder, DVD recorder to record, which channel program feed to TV shows. If a user retention using cable or satellite set-top box's premise still want to read and recorded, then there are two main scheme for users to choose:
1. purchase or seek to obtain a second cable or satellite set-top box. One to connect the DVD recorder, and one for direct connection to the TV.
2, to cable or satellite TV operators provide advisory, cable or satellite set-top box has a separate feed may be a signal to the DVD recorder and the TV tuner of two sets.

In addition, users also need to pay attention to two points: first, the user must have the TV antenna/cable TV and AV two types of input interface to facilitate reception from cable or satellite set-top box feeds to the TV broadcast signals; second, the DVD recorder must access the TV AV input port to recordable DVD disc playback. If the TV set apart from the antenna/cable connection port, no two sets of AV input, so that users can purchase a RF modulator, this also enables cable set-top DVD recorders and A/TV correct connections.

10. player playback volume low or distorted

Although traditional analog vinyl record seems to have been an inch, but there are many collections of these records. Unfortunately many new development launched a home theater receiver has no player input, this phenomenon is becoming more and more common. In this case, many users will use the receiver AUX auxiliary ports or other less commonly used ports to connect the record player, but often fail to work properly, this is because most player changtou (special design) audio output voltage and impedance and CD CD player, VCR video recorder, DVD player, etc. If the user's home theater receiver is not set player input port, then the user needs when you can purchase an external player preamplifier, or purchase the built-in player preamplifier player.

Ten questions with home theater material life improvement, the pursuit of the spirit to enjoy more and more people, so home theater set up heat on global vigorously. Mountain each year the Department of home theater new account join, therefore, founded in nature will be many beginners don't know or can't figure out where my heart will have many problems expect answers the following interview to answer some of them, for your reference. Home Theater is a more complex device agglomeration of AV system, various factors are different degrees of shadow cast the best to the system. Together in the following aspects must be given sufficient attention to:
(1) placing home theater systemRoom size and structure
(2) watching the location to the distance of a TV screen
(3) the room acoustic properties
(4) light on the impact of a video monitor
(5) the selected projector or large-screen TV
(6) speaker placement with wall or floor
(7) system to various cell sites
(8) the system of ventilation equipment placement environment into consideration such factors as, perhaps you can clearly know what kind of room sizes and structures to maximize its story home theater style.

2. easy traveling trashrack home theater what advantages?

Easy traveling trashrack home theater in a very popular in the mainstream consumer. Class home theater with a basic home theater system required by most, if not all of the functional unit, including all speakers, surround sound receivers, DVD/CD player, occasionally is a DVD player and VCR's VC, conjoined — machine, sometimes DVD recorder. If this is the first beginners do not know set up home theater system how much equipment, do not know how to Setup and adjustment, easy traveling trashrack home theater is a good choice. Easy traveling trashrack home theater has several major advantages:
1. prices are moderate. Starting at $ 4500 Yuan, but also have high to $ 15000 or more systems.
2, system volume is small. These system DVD/receiver units are usually not higher than the average DVD player and speaker system including, very little 5 or 6 small satellite speaker to be easily placed in the corner of a room or shelf, or even can produce strong thick bass subwoofer is just as conveniently placed in the corner of the room.
3. easy to install. The system provides nearly all the required connection cable, users need to pay attention only to TV set has no AV input and audio output, non-system provides VCR video recorder and DVD player is a HiFi high-fidelity. When you set up and does not require a user to have any specific technical skills, so long as it can read and understand simple instructions and block diagram. Most systems are available to the operating system of all the random function remote control.
3. want to compatible HDTV what to pay attention to?

If there are plans to set up home theater, and preparation of purchase new zhui; TV set, the user must take into account the system device and HDTV high definition television format compatibility. At present, due to the rise of HDTV high definition format, cable, terrestrial (wireless) and satellites, and other various transmission of high definition television broadcasting in the world have launched, HDTV HDTV program production in increasing rapidly. Press the format requirements, along with HDTV HDTV video signal that a multi-channel surround sound signal, this feature is fully demonstrated home theater surround sound characteristics and ushered in a new arena. There is a compatibility with HDTV, even for DVD video playback inch output is not a high-definition format HDTV signal, can display just the TV DVD output of standard definition progressive scan signal, which maximize the effectiveness of the DVD player. In addition, with the transform into a HD high-definition format DVD player grow, and high-definition compatible TV high-definition display superiority has been further display. Recently, Blu-ray and HD DVD high-definition DVD format both technically mature, related system products have begun to pour onto the market, and the speed is faster. This provides users from home theater to get realistic audio-visual enjoyment provided additional programs.

4. home theater system with no need to add to the projector?

If users have needs to update more advanced forms of TV viewing, may wish to select the projection mode. How to buy TV video display device or video projector, a major factor in the decision is usually watch TV programmes or enjoy DVD movies and the number of times. No matter what kind of purchase TV or projector, it is important that consumers should confirm that it must be compatible with high definition format. Once you have selected the buy projector,
The user is important to note the following points:
(1) video projector is equipped with cable or antenna input, RF port F. If your cable or satellite set-top box with S-Video, component or DVI (for HD high-definition signal), connection ports, then the user is still available through these ports to connect video projector.
(2) video projector lamp life limited. If the user every night at 3-4 hours of projection, users about two years or so is going to spend about $ 7500-3000 to replace light bulbs.
(3) due to the projection TV screen dimensions are quite large, so display it in the same image is better than standard definition broadcasts programmes in first-class large screen on the TV show better results. Also, watch the viewer¡¯s VHS videotape as influenza, also General (mainly TV and VHS videotape their resolution is low), if the user's home theater system can watch high-definition HDTV cable or satellite TV, projector displays the effect will be even better.

5. the speakers and subwoofer speakers how to set up?

In home theater set-up, the speakers and subwoofer speaker configuration and placement may be very critical. Speakers type, room shape and acoustic characteristics and other factors will have a direct impact on the most appropriate speaker placement and best playback effect. Because the audio standard channels, the speaker placement. Information is typically provided is typical of a square or rectangular room speaker placement programmes, if the user rooms are other shapes, you might want to resize the speaker placement layouts, if necessary, might want to change the type of speakers, and resize the new speaker's acoustic properties. It should be noted that, in addition to the room size, shape and acoustic characteristics need to be considered to look at how many speakers and what type of speakers.

6. the number and AV speakers receive opportunities road number does not match what happens?

In General, if you want to receive from the home theaterHave excellent hearing enjoyment, multi-channel surround sound AV receivers and match 6 (5.1), 7 (6.1), or even eight (7.1) speaker is essential. However, because every home theater environment, therefore, some users may have the multi channel surround sound AV receiver, but yet with Qi should match the speaker, or surround speakers suffer from temporary shelter and find it hard to make, either temporarily idle or not complying with the rules of remembrance, which makes home theater is only used with. In this case, some speakers sometimes speak, sometimes dumb acoustic phenomenon. If you are using a multiple-channel AV receiver, surround sound and only the placement of the two speakers, so you must put in place on the receiver, surround speakers is set to (none). Although only two speakers, but whether it is Dolby Digital AC3 or DTS audio format, which AV receivers are not omitted to surround and average in voice assigned to the left and right speakers, so that the user is still able to clearly hear the audio.

7. the system speaker to adjust the latencies, why?

As the home theater system surround speakers than the front speakers is closer to the audience, and thus the former voice of earlier than the latter will get the audience's ears. For the sake of the sound of each channel can also reach the ear, speaker distance away from the audience of the channel is going to be very short so that it delayed a little time to make a sound. Both Dolby Digital and Dolby directional logic surround sound playback to let it have a moment of surround channel delay time of electronics. Some AV receiver as long as each speaker and the audience by distance to enter, it will automatically add the delay set; while some AV receiver users will have to set the delay time, the principle is the distance between the farther away the delay time is set longer. Typically, a Dolby Digital decoder in time delay has been set in advance, if you want to fine tune, most device allows the user to Dolby Digital and Dolby directional logic surround sound mode surround delay adjustment. Because the two delay between is fixed, so just in one mode set delay time. If you want to convert to another mode ten decoder automatically provides the delay.

8. uses the Dolby Digital audio format of the home theater to watch digital video shows?

Digital TV broadcasting is global, the United States, Canada and the other using ATSC SECAM countries either high-definition television (HDTV) or standard definition TV (SDTV), all the digital TV (DTV) using the Dolby Digital audio; Australia's digital television broadcasts in addition to using Dolby Digital also uses other audio format, whereas in the United Kingdom and other parts of Europe, Dolby Digital is a digital video broadcasting and satellite broadcasting of optional multichannel audio format. In response to these realities, home theater system device developers launched the signal source device, preamplifiers, AV receivers will drop as well as various signal processor or decoder is fully taken into account a variety of multi-channel audio format compatibility, and Dolby Digital is widely selection of audio format, so users don't have to worry about with Dolby Digital audio format of the home theater can watch digital video programs. In other words, completely unhindered view, but be aware that due to the digital television standard for audio and varied, from Mono, dual mono to multi-channel surround sound channels, so the device brand and model number of the audio output channel will naturally.

9. can you provide a connection to home theater system?

Basic home theater system includes TV, DVD player and VCR recorder (or DVD recorder), AV receiver, speaker (usually for 2 front main speaker, one of the speakers, two surround speakers and a subwoofer), all cables and connectors as well as the surge voltage protector. If formed by dividing cells collection into a home theater system, relative to the complex. The following is the basic equipment of the number and types.

(1) first even properly wired, ground (wireless) or satellite and VCR (or DVD recorder) channel and then with the TV connected. Connected, whether it is a TV set or VCR (or DVD recorder) are able to receive television broadcasts. If the user has two types of VCR and DVD recorder, you can take through its input ports individually and wired, ground (wireless) or satellite signal channel connections and Add method instead of from one VCR to another thread.

(2) connect the AV receiver VCR audio/video output and VC audio/video input, video recorder, once connected, users can use the VCR or DVD recorder records from the AV receiver for video signal, and you can watch videos on a TV or DVD video video programs. On the VCR and DVD recorder is already connected AV receiver, users can receive through AV received; machine using a VCR or DVD video copy protection measure is not a video and DVD video discs on the program.

(3) connect the DVD player's video output and AV receivers DVD player video inputs, and through the DVD player optical or digital coaxial audio port and AV receiver is connected to the corresponding port on. In order to be able to obtain true digital surround sound effect, users must use the DVD player's digital audio connections.

(4) for CD-CD player, or CD changer and AV receiver connected, users can CD CD player of analog or digital audio port and AV receivers. If you have a CD recorder, you can pass the audio tape recording/playback input/output circuit connected to the AV receiver.

(5) connection AV receiver TV monitor output and a TV set for one channel video input. In this way, the user can pass the AV receiver in the watch on a TV or video recorder from the VCR DVD player playback video image. It is worth noting that, in order to successfully view by AV receivers fedSent video programs, AV receivers must in VCR video recorder or DVD player, one of the open, and TV is transform to the video output channel.
10. set up home theater takes exactly?

In a sense, the home theater is to meet the individual needs of the audio and video system, it is difficult or even impossible to explain what — set of system-— is best or what is the typical home theater system. Everyone has their own personalized preferences scheme set up by what grades of home theater system, how the different environment from which to obtain the lifelike experience theater, each with its own statement, and therefore spend will naturally vary considerably. But one thing is certain, as the technology advances, the equipment of production have been quantified, the device will continue to decline in the price and costs will be followed by decreased significantly. It is worth noting that some very expensive high-end machine sometimes might just provide excellent edge characteristics, price is not high, and some cheap and at the price of equipment in may but it will provide some valuable characteristics.

The following provides several formation programmes for reference.
A, if the user set up home theater is zero-based, so the purchase of a 30 inch TV set, a hybrid DVD recorders and home cinema amplifier machine and all the necessary attachments, users have to spend at least $ 8000. If the user already has a television set, then only need to spend approximately 4000 Yuan to buy a set of simple traveling trashrack home theater system.
B, if a user purchases a 40 inch TV set, a DVD player, a separate surround sound receiver, speakers and other accessories, the user takes about $ 8000 to 15000.
C, if the user wants to purchase a large-screen flat panel TV or projector, in addition to acquire mid-range price of the surround sound device, user and takes about 15000 $ 32000, what specific number depends largely on the use of televisions, purchase AV receiver, speaker of the type and size. In contrast, a DVD player that costs less.
D, if the home theater system, the user would like to purchase a large LCD or plasma TV sets, or want to change the taste, the acquisition of the projector, then the user's cost may be as high as about 40000 to 80000 Yuan.