There are 12 major brands of fever speakers in the world as follows:
1. American speaker brands include JBL, BOSE and INFINITY. The playback characteristics of American speakers are large dynamic range and good performance of music, which is very suitable for home theaters and Hollywood movies.
2.TANNOY, B&; W, MISSION, WHARFEDALE and KEF are the main speaker brands in Britain. The playback characteristics of British speakers are exquisite expression of music details and fine manufacturing technology, which is more suitable for playing symphonies.
3. Danish speakers are famous for their exquisite manufacturing technology and their reproduction can express the music connotation. The main speaker brands in Denmark are AVANCE, DYNAUDIO, DALI and JAMO.
Extended information:
Sound refers to other sounds besides human language and music, including the sounds of natural environment, animals, machines and tools, and various sounds made by human actions.
audio probably includes a set of power amplifier, peripheral devices (including voltage limiter, effect device, equalizer, VCD, DVD, etc.), speakers (speakers, speakers), mixer, microphone, display equipment, etc.
among them, speakers are sound output devices, speakers, subwoofers and so on. A sound box includes three kinds of speakers, high, low and medium, three but not necessarily three. The development history of technology can be divided into four stages: electron tube, transistor, integrated circuit and field effect tube.
how should the speakers be placed? The correct placement of sound boxes is one of the factors to obtain good playback effect, especially for the sound with fever level. The following problems must be paid attention to when placing: < P > 1. The distance between two sound boxes should not be less than 1.5 ~ 2m, and should be kept at the same level. The left and right sides of the speaker should be at the same distance from the wall. There should be no sundries in front of the speaker.
2. The high-pitched unit of the speaker should keep the same horizontal line with the listener's ear, and the angle between the listener and the two speakers should be 6 degrees, leaving a certain space behind the listener.
3. The walls on both sides of the two speakers should be consistent acoustically, that is, the reflection of sound waves by the walls on both sides should be the same.
4. If the directivity of sound waves in the speakers is not wide, two speakers can be placed slightly inward.
5. for small speakers, if you feel that the low frequency is not enough, you can put the speakers near the corner.
placement of speakers with different channels:
placement of speakers with center channels. The front center speaker is usually placed as close as possible to the center of the image screen. The center channel speaker has the greatest influence on the sound quality of the movie dialogue. In order to ensure that the dialogue is accurately positioned in the center of the screen and the sound is clear, a separate speaker specially designed for the center channel should be used instead of the ordinary bookshelf speaker or the speaker inside the TV.
the placement of the left and right channel main speakers has a certain relationship with the position of the center channel speaker. In order to ensure the smooth movement of sound and image left and right, they should be placed on both sides of the center channel speaker, and these three speakers should keep the same distance from the position of the best listener in front of the screen. Generally speaking, the position of the center speaker should be set back a certain distance from the left speaker and the right speaker until the sound fields of the two speakers can be completely combined, thus creating a truly unified sound and image positioning. The backward distance is related to the size of the space, the listening position and the speaker used, which can be determined by experiments.
The placement of surround sound speakers should be different according to the audio-visual environment (room conditions) and the type of loop sound speakers. For the speakers with left and right surround sound channels, the sound diffusion should be more important than the directivity, which is beneficial to create a strong surround atmosphere. When placing dipole sound speakers, two factors should be considered emphatically: resonance and self-attenuation. The best anti-resonance position is at the height of 2% of the indoor space from the ceiling (or ground) (such as indoors) In order to make the frequency response smoother, a new device called low-frequency "trap" (absorbing low-frequency audio) can be added to eliminate the reflection that leads to sound self-attenuation.
placement of subwoofer. Usually put the subwoofer near the front corner, preferably more than 1m away from the corner, so as to reduce the interference of standing waves. You can also put the subwoofer on both sides of the best listening position and keep a proper distance. Because the human ear is not sensitive to the directivity of the subwoofer coming from both sides, the subwoofer will not interfere with the original sound and image positioning of the three front channels at this time. Of course, the best placement position should be decided by experiments.