1, the moving coil. Fundamentals from Fleming's left hand rule, put a wire with a current perpendicular to the magnetic field lines into

the magnetic north and south poles, the highway will be subject to both the magnetic field lines and current The interaction and

movement in the diaphragm attached to a root path in this line, with the current changes in the movement of the diaphragm to

produce around. Currently more than 90 percent of the monomer are moving cone Ring type design.

2, the electromagnetic type. A U-shaped magnet mounted in the middle of the movable iron piece cut (armature), when current flows

through the coil and the magnet armature are generated by electromagnetic repulsion phenomena absorbing and while driving

Diaphragm movement. This design inexpensive but ineffective, so the phone is used in tube and small headset.

3, inductive. And electromagnetic principles are similar, but the armature doubled, while the two voice coil and magnet asymmetry,

when the signal current is passed two armature flux with each other for different Pushing the movement. Is different is that the

electromagnetic inductance can be regenerated lower frequencies, but the efficiency is very low.

4, electrostatic. Basic principle is Coulomb (Coulomb) Law, usually in plastic film with a qualitative inductive material such as

aluminum vacuum evaporation process, two diaphragms placed face to face,

When either a positive current hypertension plus another piece will induce a small current through each other attraction repulsion

force air can sound. Electrostatic monomer light because of the quality And scattered small vibration, so it is easy to get crystal

clear treble, bass move on skills needed, and it is not efficient to use and easy to gather dust DC original. At present, such as

Martin-Logan and other manufacturers have successfully developed a hybrid static and dynamic speaker to address the problem of

insufficient electrostatic body bass in the use of electrostatic headphones is also very extensive.