Ranking of the nonlinearities of electrodynamic loudspeakers

2 The aim of this paper is to present a way of ranking the nonlin3 earities of electrodynamic loudspeakers. For this purpose, we have 4 constructed a nonlinear analytic model which takes into account the 5 variations of the small signal parameters. The determination of these 6 variations is based on a very precise measurement of the electrical 7 impedance of the electrodynamic loudspeaker. First, we present the 8 experimental method to identify the variations of these parameters, 9 then we propose to study theoretically the importance of these nonlin10 earities according to the input level or the input frequency. We show 11 that the parameter which creates the most distortions is not always 12 the same and depends mainly on both the input level and the input 13 frequency. Such results can be very useful for optimizing electrody14 namic loudspeakers. 15