The wavelength of the bass is much larger than the size of a normal room, and the bass is actually not directional. With this feature, the average user can use almost a single subwoofer to get almost unlimited freedom to experiment with the best placement of the subwoofer indoors. Although its placement is not as important as the main speakers, the different placements still have different acoustics. Take the Incarney subwoofer A-BASS as an example. The following describes the placement methods of the three subwoofers. Each has its own advantages and disadvantages. Users can choose according to the experimental results.
1. Place the subwoofer at the corner of the wall. This way helps to avoid the acoustic reflections in the room, making the reproduced sound clearer and more vivid. However, at this time, the indoor mode is more excited, which makes the bass response not flat enough. Since the subwoofer in the entire system is farthest from the listening position, the bass heard will be slightly delayed than the sound of the main speaker. When placed, the subwoofer should be at least 10cm away from the wall.
2. Place the subwoofer on the same line as the main speaker. At this point, the distance between the subwoofer and the main speaker and the listening position is equal, so the direct sound from the three speakers reaches the listener's ear almost simultaneously, and there is no time difference. The disadvantage of this type of placement is the increased amount of reflected sound in the room, and these delayed reflected sounds reduce the clarity of the reproduced sound.
3. Place the subwoofer in a position close to the listening area. This method is worth a try, especially for some rooms that are difficult to get the best sound, because it minimizes the incentive of the indoor mode, and also greatly shortens the direct transfer path and bass to the listener's ear. The time, but at the same time also makes the indoor reflection sound more blurred.
Active Subwoofer A-BASS
Another unscientific placement method is to place the subwoofer on the usual listening seat and let it play music, then move slowly around it and listen to the music carefully until you find the bass sound quality. A little better. This is the best place to place the subwoofer, and finally place it there.
In addition to the two high-level (speaker level) output terminals that connect the left and right main channel speakers, the modern home theater AV amplifier also has a low level (line level) output terminal, active subwoofer. Then there is an input terminal corresponding thereto. In order to make the system have the best sound effect when playing music and movie programs, in addition to connecting the two sets of speaker level input terminals of the subwoofer to the corresponding output terminals of the AV amplifier, the line level of both should be The terminals are also connected correspondingly. The advantage of this connection is that the bass is effectively enhanced when the system plays two different programs, two-channel stereo music and 5.1-channel movies.
High-power electronic power devices are repotted into an integrated module according to a certain combination of functions.
A power semiconductor module is a combination of certain functions and modes, and a power semiconductor module is a high-power electronic power device that is re-potted into a whole according to a certain function combination. Power semiconductor modules can achieve different functions according to the different components in the package. Power semiconductor modules can be used as air-cooled modules with air-cooled heat dissipation, and water-cooled modules with water-cooled heat dissipation.
It is characterized by simple installation, convenient use and maintenance, small size and light weight.
Typical applications in AC/DC motor control, various rectifier power supplies, industrial heating control, dimming, non-contact switches, electric welding machines, motor soft start, reactive power compensation, frequency converters, UPS power supplies, battery charging and discharging, etc.
Semiconductor Module Devices,Power Semiconductor Device,Semiconductor Cooling Devices,Diode Module
YANGZHOU POSITIONING TECH CO., LTD. , https://www.pst-thyristor.com