Microphone 1. Do not shoot the microphone and blow the microphone when the test sound. Because the pickup part of the microphone is more precise, and the parts are very expensive, blowing the microphone or blowing into the microphone head can easily cause damage or component displacement, which ultimately affects the sound quality.
2. Do not leave the microphone too far away from the microphone. The best distance is about 10 cm. Some "leadership" speeches are far away from the microphone. Some singers stick to the microphone, and the sound of the pickup is too small. If the volume fader is pushed up, it will easily cause whistling; if it is too close, it will be spoken. The sound of the air is also picked up, causing a "beep" noise.
3. Do not turn off the power of the microphone after using it. When the meeting is finished or after the singing is finished, the microphone switch should be turned off in time. At this time, the sound controller does not turn off the mixer volume fader in time: on the other hand, other noises are also picked up. Go in, and on the other hand, play some unnecessary speeches. President Bush has had such an experience and caused embarrassment.
4. Don't stick your mouth to the microphone. Some people don't pay attention to it or pursue a close-up effect. Often the mouth sticks to the microphone, but it does not know that this not only destroys the normal frequency response of the microphone, but also poses a great hidden danger to health. There are many germs on the microphone net cover.
5. Don't quit the battery when you don't use the microphone for a long time. Now the wireless microphone or conference microphone needs battery power. If the microphone is not used for a long period of time, the battery should be removed to prevent the battery from leaking and corroding the microphone.
6. Do not place the microphone at random. It is a precision equipment. It should be placed in a clean, dry, non-corrosive gas or dust. It should also be handled gently. Be sure to avoid falling on the ground. Otherwise, it will be damaged in all likelihood.
7. For condenser microphones, do not blindly add phantom voltage. Since the capacitance of the condenser microphone needs polarization, it can work normally. Therefore, when using a condenser microphone, phantom voltage must be added. We must open the phantom power switch on the mixer, and pay attention to the voltage value and polarity. Otherwise, it will not be used normally and may cause damage.
Compared with traditional engineering and business education projectors, home projectors are more compact, practical and entertaining, and projection technology is more suitable for home life and entertainment scenes
Features
1. Large screen: The size of traditional LCD TVs is mostly between 40-70 inches, while home projectors can easily project 100-150 inches of screen content.
2. Diverse uses: Home projectors are mostly equipped with intelligent systems, which contain a large number of film sources. In addition, the projector can also be connected to different devices through different interfaces, such as game consoles, computers, U disks, etc. Only one machine can realize online drama, listening to songs, games, office and other functions
3. Diffuse reflection eye protection: The home projector uses the principle of diffuse reflection to form images, which is less harmful to the eyes than the LCD screen.
4. Convenient to move: The home projector is compact, light in weight, flexible in movement, and used in a variety of scenarios
Home Projectors,Production Projector,Home Theater Projectors,Bluetoth Battery Projector
Shenzhen Happybate Trading Co.,LTD , https://www.happybateprojector.com