Front channel speaker installation
The front channel consists of two main speakers and one center speaker, referred to as the LCR channel. These three speakers are responsible for most of the sound in the software. Therefore, it is very important to install. According to the THX example, the best way to install an LCR speaker is to mount the three speakers at the same height and level with the ears when the listener is sitting, in order to get the best sound field and the correct vocal dialogue. . However, this condition is not necessarily true for the home environment of most consumers. For example, consumers who do not use a sound-transparent screen or use a television set cannot install it as described above. For this part of the consumer, you can try to install the center speaker on the top or bottom edge of the display device, and then adjust the radiation direction of the speaker. However, this approach must be noted that the installation height of the center speaker and the angle between the L and the channel-only speakers cannot be dried up to 10 degrees, so as not to damage the sound image positioning and sound field of the vocal dialogue.
In addition to the above installation methods, the user can also try to install the LCR channel speakers simultaneously on the upper or lower edge of the display device. Then, make the same adjustment to the radiation direction of the three speakers, so that you can also get an ideal front sound field. Welcome to China Home Theater Network
Surround speaker installation
The surround speakers currently on the market include dipole radiant speakers and traditional direct radiant speakers. For the current 7.1-channel AV system, you need to use 4 surround speakers. In one case, you can configure 4 dipole radiant speakers or 4 direct radiant speakers, or use dipole speakers for the side channels and direct radiant speakers for the rear channels. These speakers also have some specific requirements when installed. For example, a direct-radiation speaker, like the front LCR channel, directs the direction of radiation to the listening position. For a dipole speaker, the “zero zone†of the speaker needs to be pointed to the listening position. In terms of the installation height of the speaker, according to the THX example, the installation height is about 1.8m-2.2m, then the consumer needs to use the speaker bracket to fix the speaker on the wall. Therefore, consumers can go to the store where the electric appliance market sells racks to buy some suitable speaker brackets to install the speakers. If you can't find a suitable bracket, consider making one according to your own speakers, but the cost will be relatively high. However, some speaker manufacturers will introduce corresponding speaker brackets according to their products when they are producing speakers, so that consumers can purchase them. For example, professional manufacturers such as M&K and Genelec have corresponding speaker accessories.
Subwoofer settings and placement
The subwoofer is mainly used to make up for the low frequency limit of the main speaker. At the same time, it can also increase the low frequency energy. Therefore, consumers must set the low frequency crossover point of the AV amplifier before using it. When setting the crossover point, it should be set according to the speaker you selected. For example, if you have selected a THX-certified home theater speaker such as M&K or Atlanta, you can set the crossover point to 80Hz. For other speakers, you must set the crossover point for each channel based on the low frequency response of each speaker. Once the crossover point is set, the subwoofer can be placed. So which position is better for the subwoofer in the room? Since the low frequency below 80Hz is almost non-directional, in theory, the subwoofer can be placed anywhere in the room. But in reality, consumers need to try to place the subwoofer in different positions in the room to try to find the best placement point. In general, consumers can place the subwoofer in front.
General commissioning of the speaker system
Finally talk about the overall debugging of the speaker system. First measure the distance between each speaker and the human ear (generally the distance between the tweeter and the human ear), and input the measured distance value into the AV amplifier. Then, the consumer uses the sound pressure meter to measure the output sound pressure of each channel at the listening position, and independently adjusts the output level of each channel in the AV amplifier according to the reading, so that the sound pressure of each channel is reached. 80dB reference sound pressure value. Then the speaker settings are basically completed.
After completing the above two steps, in fact, for the ordinary consumers of the big points, it is already completed the basic debugging. But for some consumers who are looking for better results, it is recommended to use an equalizer to correct the room's frequency response curve. Why is it so open? The main reason is that the frequency response curve of the listening environment of most consumers is not ideal. Of course, some people think that adding an equalizer will affect the sound quality. However, if the frequency response curve of the room is not ideal, it will seriously affect the overall sound balance, and finally the overall sound effect will be worse. Therefore, the use of an equalizer is a good choice when the listening environment is relatively unsatisfactory.
Before using the equalizer, the first condition is to understand the frequency response curve of your room. At this time, you can find a friend who is engaged in acoustic measurement to help you measure the frequency response curve of the room. Then, according to the room frequency response curve, the corresponding attenuation or gain is made on the equalizer. However, it should be noted that the equalizer should not be excessively trimmed. This is because adjusting the gain of the corresponding frequency band in the equalizer actually increases the output level of a certain frequency. If a certain frequency is adjusted too much, the amplifier will cause the level of the amplifier to be too large. Burned out, so be careful when adjusting.
The basic installation and setup of the home theater speakers have been roughly described. However, it is also worth noting that consumers must use their familiar software and constantly adjust the speaker system through their actual sense of hearing, in order to get the desired results.
Introduction to LED peripheral products: all Led Display screens are composed of peripheral products. The surrounding products are mainly divided into these categories.
I. video processor, which is often used in engineering and leasing. Image zooming.
The display mode of Led Display Screen is point-to-point, which determines that the LED display screen can only display pictures with the same physical resolution size as itself. LED video processor can zoom the image, output the picture in any size, and map the whole desktop to the Led Screen.
2. Signal conversion and switching
Video processing equipment can complete the format conversion among many signals. Another important function of the video processor is to manage all kinds of signals when there are multiple access signals, and to switch between them flexibly.
3. Image quality improvement
Because the pixel spacing of LED display is much larger than that of other flat-panel display media, there are strict requirements for image processing technology, especially image enhancement technology. High quality LED video processor can use advanced algorithms to modify the signal with poor image quality, perform a series of processing, such as de interlacing, edge sharpening, motion compensation, etc., to enhance the details of the image and improve the image quality.
4. Large screen splicing
At present, the point spacing of LED screen is becoming smaller and smaller, and the overall dimension is becoming larger and larger, which makes the physical resolution of LED screen become very large. LED video processor with splicing function can drive large-resolution screen, which is a very cost-effective driving mode.
5. Multi screen processing
In many special scenes, a display screen needs to display multiple images with the same or different signals. The video processor with multi image processing function can flexibly meet such display requirements.
Due to the influence of regional weather and other factors, the outdoor display screen requires the video processor to have more excellent image quality improvement ability and advanced image scaling algorithm to ensure the sharpness and gray level of the image to the greatest extent after the video image is scaled. In addition, the video processor is also required to have a wealth of image adjustment options and effects to process the image brightness, contrast and gray level, so as to ensure the soft and clear screen output.
II. Air plug connector. Power and data are transmitted between boxes through air plug connector. The air plug is mainly divided into male head and female head. It is divided into indoor and outdoor according to the use scenario. His use makes the connection fast and safe.
3. Wire, the wire is mainly divided into 1 and 5V power lines, the wire connecting the power supply to the card, 2 and 220V power lines, the network cable connecting the power supply and the power supply, 3, the signal network cable, the network cable connecting the receiving card and the receiving card, 4, the cable arrangement, the cable arrangement between the module and the module and between the receiving card and the module. 4. Card wire, wire connecting receiving card and power supply
IV. receiving card is mainly used to receive data processing data and set screen parameters according to screen.
V. main card: the main card is divided into synchronous sending card and asynchronous card. The synchronous sending card is the synchronous display of the computer or other signal sources. The asynchronous sending card is to preset the content, send and store. Then the signal is off the external link.
Vi. power supply, which is mainly used to provide transformer power for screen body, also called transformer.
7. Box structure, mainly including die-casting aluminum box and iron box according to material classification, simple box and waterproof box according to use.
Peripheral products are selected according to customers' requirements, with various brands.
Led Screen Guard,Led Screen Protector,Lcd Led Wall Mount,Led Display Accessories
Shenzhen Vision Display Technology Co,.LTD , https://www.ledvdi.com