What's a loudspeaker for?
The loudspeaker technology makes people not only in the subway or go to the suburbs while hiking can enjoy their favorite music and radio programs, but also to listen to the wonderful sound electronically saved already died the voice of the people and nature does not exist. In the cinema, the world of loudspeakers creates a world of imagination. Loudspeakers are also an important tool for communicating with the masses of all charismatic personalities of the century.
The loudspeaker was invented in 1915, and from then on, generations of technicians have made unremitting efforts to improve it. Today, with the rapid development of recording equipment and storage technology, with the U.S. famous sound amplification equipment production company Bose researcher William R Shute, a "but become a ring the weakest home audio system". "Whenever I enjoy music at home, there is no way to imagine sitting in a concert hall," he says. It is not known why the amplification technique can not be done.
The loudspeaker, as its name suggests, means to amplify the sound and spread it further. The loudspeaker has more penetrating power than the speakers. Mainly used for teaching, guides, outdoor activities.Loudspeakers can be divided into several types according to their size, mode of use and use. Each has its advantages. Portable speakers are generally only power 3--8W because of shape, size, and horn. But the wireless megaphone and the wired loudspeaker are different in size and different in use. The smaller size is suitable for the use of teachers and guides. They are hung on the waist to make the hands more free, and the power is usually 3W-8W. Large, suitable for outdoor activities, summer camps, extra-curricular lectures, such as large traffic flow, power is 35W---95W. The loudspeaker is according to the use of lithium battery type as a classification of. It solves the environmental pollution problem of traditional dry battery, it is mainly used for power amplifier of mobile phone lithium battery technology.
