Finite Element of Magnetic Field in Moving Coil Loudspekers

This paper focuses on the finite element analysis (FEA) of the magnetic circuit of the moving coil loudspeakers. The whole analysis is performed on a standard single gap loudspeaker. FEA allows very precise determination of the flux density in the air gap and very easy determination of the maximal displacement of the coil. The whole analysis gives deeper prospect in the modeling of the nonlinear distortions of the moving coil loudspeakers, specially at the full load.