The purpose of a speaker magnet is to create a magnetic field into which the loudspeaker voice coil can interact. It's the attraction and repulsion of the voice coil to the permanent magnet that creates the motion of a loudspeaker. Loudspeaker magnet materials vary, but there are three main types: ferrite, alnico, and rare-Earth magnets.

Want to learn more about electrical and acoustical testing, how it works, and the terminology every audio engineer should know? Take a look at our Loudspeaker 101 Guide: https://info.miscospeakers.com/downlo...