How are speaker magnets made?
Speakers use two types of magnets. The first magnet is a fixed, solid magnet. The second type is an electromagnet, or voice coil, that causes the speaker to move and create vibrations that result in sound.PurposeSpeaker magnets are designed to work with a voice coil electromagnet to cause a speaker to vibrate to produce sound. Different magnets are made in different ways.Iron MagnetsIron magnets are made by heating iron powder under high heats and pressure to “sinter” the magnet. The sintered iron is then magnetized before the magnet is installed on the speaker. Some iron magnets use iron, nickel and cobalt to help control the strength of the magnet.Ceramic MagnetsCeramic magnets use iron and ceramic material to make a magnet in which the strength and flux of the magnet is more easily controlled. Ceramic magnets are made in a similar way to iron magnets.Rare Earth MagnetsNeodymium magnets are made in a similar way to sintered iron magnets. However, instead of using iron powder, manufac
