Structure and working principle of electric loudspeaker

　　The most widely used electric speakers, it was divided into paper pot, horn and dome three. Here only two kinds of.
　　1、Paper bowl speaker
　　Cone loudspeaker is also called loudspeakers.
　　It consists of three parts: (1) vibration system, including tapered paper cone, a voice coil and the centering support tablets; magnetic circuit system, comprises a permanent magnet, a guide magnetic plate and field heart column; third, ancillary systems, including pot racks, wiring board, pressure side and a dustproof cover. When the sound coil in a magnetic field has an audio current, it generates a magnetic field that changes with the frequency of the audio current. The magnetic field interacts with the magnetic field of the permanent magnet, which causes the sound to vibrate along the axial direction.
　　2、Horn loudspeaker
　　The structure of horn loudspeaker, which is composed of a vibrating system (tweeter) two and the horn form. Vibration system
is similar to the paper bowl speakers, it is not the vibration of the film is not a paper bowl, but a ball of the top shaped diaphragm. Vibration film by horn (after two times of reflection) of acoustic radiation into the air. Its high frequency, large volume, commonly used in outdoor and sound field.