China's first professional speaker diaphragm coating manufacturers

There are many kinds of sound film coated loudspeakers, according to its principle of energy transfer can be divided into electric type (that is, moving coil type, electrostatic type (namely capacitive type, electromagnetic type (that is tongue spring type), piezoelectric type (that is crystal type) and so on. The latter two kinds are mostly used in rural wired broadcasting network; It can be divided into low frequency loudspeaker, medium frequency speaker and high frequency loudspeaker according to frequency range, which are often used as combination loudspeaker in speaker box. Sound film coating according to the energy transfer mechanism and structure of the split coil (electric, capacitive (electrostatic), piezoelectric (crystal or ceramic), electromagnetic (pressure spring, electric ion and pneumatic loudspeakers, etc. The electric loudspeaker has the advantages of good electro-acoustic performance, firm structure and low cost, so it is widely used. According to the sound radiation material is divided into paper basin type, horn type, diaphragm type; According to the shape of paper basin is divided into round, elliptical, double paper basin and rubber fold ring; According to the working frequency sub-bass, pitch, high, some are also divided into tape recorders, television sets, ordinary and high-fidelity loudspeakers, and so on; Divide low impedance and high impedance according to voice coil impedance; According to the effect of direct radiation and environmental sound and so on. The sound film coating loudspeaker is divided into the built-in speaker and the external loudspeaker, and the external loudspeaker is the generally referred speaker. The built-in speaker refers to the MP4 player with the built-in speaker. This allows the user to listen to the sound of the MP4 player not only through the headphone Jack, but also through the built-in speaker. The MP4 player with the built-in speaker can use no external speakers. It can also avoid the inconvenience of wearing headphones for a long time.