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Application of Negative Impedance Amplifiers to Loudspeaker Systems

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Successful application of negative damping factors to loudspeakers is not so difficult a task as one would infer from the literature of recent years. Foremost in importance are the cancellation of voice-coil inductance as well as resistance, equalization for low-frequency radiation characteristics; and utilization of infinite baffle rather than a reflex or horn type. When satisfactory attention is granted these factors, substantial improvement in loudspeaker performance is almost certain. In a typical application of a negative impedance amplifier, resonant hangover is eliminated, the nonlinear distortion halved, and the low-frequency response leveled and extended about an octave.

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JAES Volume 6 Issue 4 pp. 240-243; October 1958
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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=217

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