Types of car speakers

Loudspeaker: in fact is a kind of electric force a sound energy converter. When the audio signal current flowing through the speaker voice coil, coil audio current generated by the alternating magnetic field and permanent magnet to generate strong constant magnetic field interaction, the voice coil mechanical vibration is electrical energy converted into mechanical energy, and a voice coil vibration drives the diaphragm, corresponding vibration in the air around, the mechanical energy can be converted into acoustic energy. Electrodynamic loudspeaker has simple structure, wide frequency response and little distortion, so in the loudspeaker system is most widely used. At present, there are many electric speakers of the market, some of which are very similar in shape, but because of the different parts of the material, often make them between the performance indicators of great differences, the price is also a big difference. Early production of high frequency speakers are basically some of the high frequency speaker, and later appeared to have a good performance of the ball to the top of the high frequency speakers and flat panel speakers, in recent years, with high frequency speaker. The earliest low frequency speakers are almost all paper pots, although most of the low frequency speakers are still using paper, but now the paper pot in the material and production process has been greatly improved, paper pots of materials added a number of long fiber material, so that the overall performance of the paper bowl has been significantly improved.

　　Tapered Speaker: is the most widely used speaker. Cone speakers according to the shape of the cone is usually a circular speaker and elliptical speakers of two kinds, mainly in order to adapt to the TV and to reduce the size of the radio and the need to design and manufacture, is currently used in TV and car audio. The maximum diameter of the circular loudspeaker standard Xintong common loudspeaker basket, said the standard size of oval loudspeaker is of major and minor axis of ellipse, said unit with cm or mm said that traditionally used to inch, said the relationship between the two is 1 inch equals 25.4 mm. As we usually said 8 inch speaker, it is 200mm/4X6 inch diameter speaker speaker frame size is 100mmX160mm. Tapered speakers can be divided into four types according to different frequency range, including the full frequency band loudspeaker, low frequency speaker, medium frequency loudspeaker and high frequency speaker. According to the different materials, the conical speakers can be divided into paper basin speakers, wool and acrylic speakers.

　　Flat panel speakers: in the long run, it is found that the cone cone is one of the important causes of distortion. To reduce the distortion of the loudspeaker cone of the loudspeaker frequency response curve becomes more flat, it is best to cone cone of the loudspeaker cone basin with a flat diaphragm instead. This is because of the loudspeaker cone cone is a concave cone-shaped diaphragm. In front of it will appear a cheap room. When the speaker to sound will resonate in the cone before the basin the cheap room, it is precisely because of this kind of acoustic resonance makes the whole loudspeaker frequency response of bad, we usually think of conical diaphragm of this effect is called the staircase effect. Along with the development of the speaker manufacturing technology, people are constantly improving the technical performance indicators of the speakers, but also pay more attention to improve the conversion efficiency of the speaker. In order to improve the mechanical energy can be converted into energy conversion efficiency of this point of view, we hope that speaker diaphragm and the air contact area as large as possible. Therefore, it is assumed that the conical speaker of the conical diaphragm can be expanded into a flat, so that the speaker's voice coil directly push a piece of flat diaphragm, so that the diaphragm can promote more air. In order to eliminate the antechamber effect of the loudspeaker cone and improve the conversion efficiency of the loudspeaker, people were attempts, with different plate materials to replace the loudspeaker cone, finally succeeded in the development production beyond board speaker. The diaphragm of the loudspeaker must have good rigidity. People had to design the speaker's vibrating membrane as a cone is the reason why the conical body has a good rigidity. Now once the cone-shaped diaphragm is laid out flat, first of all, there is an urgent need to solve the problem is how to improve the rigidity of the flat diaphragm, of course, we can by properly increasing the flat diaphragm thickness to increase its rigidity, but this method in increasing the diaphragm to cut at the same time also increased the quality of diaphragm, the quality of a loudspeaker diaphragm too large will bring harm to the high frequency characteristics of the speakers. Therefore, the choice of the quality of light, rigid good film material is the key to the production of flat panel speakers.

　　Dome speaker: the traditional tapered speaker has the characteristics of simple structure and high energy conversion efficiency, however, due to the structural reasons, the directivity of the loudspeaker is often unsatisfactory.