Magnet: Important Magnetic Component of Speakers

A magnet speaker is an audio device that uses the relationship of a magnetic field with an electric current to create sound. It is composed of a permanent magnet with static magnetic fields made of ferrite or neodymium. The voice coil picks up an electrical signal of audio information, which then creates an electromagnetic field. This electromagnetic field is able to suspend the weightless voice coil into most of the static magnetic field created by the permanent magnet. This voice coil is connected to a diaphragm, so when the voice coil moves back and forth, it vibrates the diaphragm causing it to push air and produce sound waves. The permanent magnet and coil also allow audio information to be transmitted into soundwaves using diaphragms which push sound into the air. The strong points and quality of the permanent magnet determine the powers of the speaker, including its sensitivity and sound quality. Weak magnets lead to a decrease in the bass response and volume output. Stronger magnet speakers make small-volume portable speakers as well as large home audio systems more efficient