The magnets used in professional loudspeakers are mainly neodymium magnets and ferrite.They exist in the shape of rings or disks of various sizes. Neodymium magnets?is often used in high - and medium-grade products.?Its sound quality, sound elasticity, sound performance, sound field positioning accuracy.With excellent performance, small and light?neodymium magnets?began to replace large and?heavy ferrite gradually.