The knowledge of a loudspeaker structure's physical dimensions and features can directly predict both the maximum excursion before damage and the linear excursion limit as defined by psychoacoustic or performance criteria. Various voice-coil, magnetic-gap, and suspension configurations are discussed in terms of their potentials for linear motion. Measurements which substantiate the predictive linearity are presented, and specific structures and mechanisms which extend or degrade the predicted linearity are also discussed.
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