Speakers structure

Our most common electric cone speaker cone . Electric cone speaker that in the past , we often say that the speaker cone , although it is still the cone diaphragm -based, but there have been many polymer diaphragm material , metal diaphragm, with cone speakers Car Speaker call it a truly a . Tapered cone speakers generally by the magnetic loop system ( permanent magnet , core columns , magnetic board ) , vibration system ( cone, voice coil ) and supporting auxiliary systems ( dampers , frames, mats side ) and other three parts.
1 . Coil : coil tapered cone speaker drive unit , which is a very thin layers of copper wire wound on a paper tube , there is generally about several circles, known as coils, placed on the guide column and the core magnetic plate magnetic suspect gap . Voice coil and cone fixed together , when the current signal is passed through the voice coil , the coil vibration led the cone vibration.
2 . Cone : cone cone cone Bluetooth Speaker speaker diaphragm materials are used in many types of natural and synthetic fibers are generally two categories . Often used natural fiber , cotton, wood , wool , silk , etc., just using rayon rayon, nylon, glass fiber or the like . As the voice of the speaker cone is a radiation device , to a large extent determines the burst performance of the speaker, so no matter what kind of cone, but also the rigid requirements of both light and good , not because of the ambient temperature and humidity changes and deformation .
3 . Fold ring: Ring is guaranteed fold axial movement along the cone speaker , set the limit lateral movement , but acts as a barrier around the cone empty 'm circulation effect. In addition to the materials used off cone ring material also use plastic , natural rubber, and pressing the adhesive through the cone .
4 . Damper : dampers used to support voice coil and cone binding site , to ensure its vertical rather skewed. There are many concentric ring damper , the voice coil in a magnetic gap that is free to move up and down without moving laterally , to ensure not collide with the magnetic coil plate . Dust damper on the outside in order to prevent dust off the magnetic gap , the voice coil to avoid dust and friction , leaving the speaker to produce unusual sounds .

The principle of the car horn

Horn, which has two kinds of gas and electric horn speaker, electric horn by electromagnetic coil electricity and power outages, make the metal diaphragm produces vibration and acoustics, sound pleasing to the ear. Electric horn shape is a spiral and basin type, Wireless Speaker used in all kinds of cars. Light passenger cars are electric horn. Air horn using compressed air flow make the metal diaphragm produces vibration, appearance is more long horn (cylindrical), more sound and a higher tone, long transmission distance, multi-purpose on running a long distance of large and medium-sized cars within the city is disabled. Spiral car electric horn attached speaker cone, roll up into a spiral in a compressed volume, beautiful sound loud and clear. Basin shape car electric horn without speaker cone, shape flat Bluetooth Speaker volume, light weight and easy installation, quality slightly but widely used. Basic working principle of spiral and basin shape is the same, by the static and dynamic core, magnetic coil, contact core, diaphragm, and so on. When the driver presses the button, the electricity flowing through the contact through the coil, a coil magnetic suction under the force of moving iron core diaphragm moving armature move off contact, magnetic current interrupt disappeared, the elasticity of the diaphragm in itself and under the action of leaf spring and recovery in situ with moving iron core, contact closure circuit connected to electric current to pass through magnetic coil, contact the repeat the action. So follow bad diaphragm vibration unceasingly, thus the sound. Help the resonant cavity with the rigid connection of diaphragm, can make the vibration smooth sound more pleasing to the ear. Among them the clearance between the contact and contact arm small excitation frequency is high; Gap big excitation frequency is low, that is, different clearance adjustment, speakers will be encouraged by forced vibration of different frequency and different noise generation. Due to the above analysis shows that the horn diaphragm is forced vibration.