Speaker power is dominated by the power consumption of coin. Speaker magnets use the same specifications and same magnetic material, but different in amounts of magnetization, the speaker power, sensitivity and transient expression are also different. It is not simply think that the larger the diameter the better the speaker magnet.
The variational electrical current enter into speaker, the magnet becomes a electromagnet. With the changing of the current direction, the electromagnet is also kept moving back and forth because of the force movement of energized conductor in a magnetic field, which is also drive the cone vibrating. The sound of speaker is produced.
