Optimization of electrodynamic loudspeaker-design parameters by using a numerical calculation scheme

Electrodynamic loudspeaker-design parameters are studied by using a recentl y developed modeling scheme for the numerical simulation of magnetomechanic al transducers. This simulation scheme is based on a Finite-Element-Method (FEM) and allows the precise and efficient calculation of the magnetic, mec hanical and acoustic fields including their couplings. Therewith, the compl ex dynamic behavior of moving coil drivers can be studied and, furthermore, an appropriate computer-aided-design including an optimization of critical parameters can be established. In the present paper the validity of the si mulation models is, first, verified by comparing computed and measured resu lts. The calculated results show good agreement with the measured data. Fur ther on, two practical applications, the elimination of response dips at in termediate frequencies and the improvement in efficiency for higher frequen cies, are presented.