The woofer is composed of electromagnet, coil and horn film, which converts the current into mechanical wave. The principle of physics is that when the current passes through the coil, the electromagnetic field is generated, and the direction of the magnetic field is the right hand rule. Suppose that the loudspeaker plays C at 261.6Hz, the loudspeaker outputs 261.6Hz mechanical wave and sends out C wavelength adjustment. The speaker produces sound when the coil, together with the speaker film, emits a mechanical wave, which is transmitted to the surrounding air. [1]
However, because the mechanical wave wavelength that human ear can hear is limited, the wavelength range is 1.7cm -- 17m (20Hz -- 20 00Hz), so the general speaker program will be set in this range. Electromagnetic loudspeakers are roughly composed of electromagnetic power system (including: magnet voice coil, also known as electric coil). Mechanical wave system (including: sound film, that is, horn diaphragm dust cover wave), support system (including: basin frame, etc.). It works the same way as above. The process of energy conversion is from electrical energy to magnetic energy, and then from magnetic energy to wave energy.
Bass speaker and treble speaker, medium speaker with the sound system, long wave, long wavelength, make people's ears produce a warm feeling, hot feeling, and make people excited, excited, often used in KTV, bar, stage and other wide entertainment places.
