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Large Signal Performance of Tweeters, Micro Speakers and Horn Drivers

Loudspeaker dedicated for high-frequency signals may also produce significant distortion in the acoustical output. The dynamical measurement of the nonlinear parameters reveals the physical causes directly. The stiffness Kms(x) of the mechanical suspension is mostly the dominant nonlinearity followed by the force factor characteristic Bl(x). The paper presents a new measurement technique developed for those transducers and discusses the relationship with large signal performance (distortion, compression) and the impact on the listening impression.

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