Loudspeaker structure and working principle

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:
①The vibration system, including tapered paper cone, a voice coil and the damper etc.;
②Magnetic circuit system, including the permanent magnet, the magnetic field and the magnetic core;
③The auxiliary system, which comprises a frame, a wiring board, a pressing edge 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. The vibration system is similar to the paper bowl speakers, and the difference is that the vibrating membrane is not a paper bowl, but a spherical cap diaphragm. Vibration film by horn (after two times of reflection) of acoustic radiation into the air. Its high frequency, large volume, commonly used in the outdoor plaza and sound.