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Technique for Loudspeaker Motor Structure and Voice Coil Evaluation
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English
Abstract
Automotive loudspeaker performance specifications have undergone dramatic changes in the past five years. Loudspeakers are being specified with higher sound pressure level, extended frequency response and less total harmonic distortion. While meeting these more demanding performance specifications they must be shallower, lighter in weight and, if possible, less costly.
To meet these criteria a better method was needed to evaluate smaller, lighter magnetic motor assemblies and their coupling to the loudspeaker voice coil. The method presented allows for a quick and inexpensive evaluation of prototype components.
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Authors
Topic
Citation
Stewart, J., "Technique for Loudspeaker Motor Structure and Voice Coil Evaluation," SAE Technical Paper 860003, 1986, https://doi.org/10.4271/860003.Also In
References
- Electronic Industries Association Standard RS 157 “Method for Determining Air Gap Flux Density and Energy.”
- “How to Measure Flux with an Integrating Fluxmeter” Robbins M. A. presented at the 13th Magnetic Material Producers Association Conference and Workshop Raleigh, North Carolina January 27-28 1982
- “Electricity and Magnetism” Pureell Edward M. McGraw-Hill Book Company 1965
- “All Electronic Magnetic Hysteresigraph” Elarde Paul F. The Western Electric Engineer 9 1 January 1965
- LDJ Magnetic Multimeter Fluxmeter Model 702 Owners Manual LDJ Electronics, Inc. 1974
- “Basic Equipment and Test Methods for Evaluating Permanent Magnets” Fiepke J. W. presented at the 13th MMPA Magnetic Conference and Workshop Raleigh, North Carolina January 27-28 1982
- “The Open Circuit Tests and Their Application” Trout Stanley R. MMPA Magnetic Conference and Workshop Raleigh, North Carolina January 27-28 1982