The one-degree of freedom system consisting of mass, stiffness and mechanical resistance driven by magneto-electric transducer is analysed as a model of loudspeaker moving system. The non-linearity is introduced into stiffness equation (stiffness of suspensions and loudspeaker enclosure) and equation of electromechanical coupling coefficient Bl. The research is aimed on recognition of an influence of the enclosure on total non-linear properties of the loudspeaker radiator. The MATHCAD worksheet for analysis of the problem is presented in the appendix of the paper.
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