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Convention Paper

Heat Transfer Mechanisms in Moving-Coil Loudspeakers

Authors: Henricksen, Clifford A.

AES Convention 57 · Paper 1247 · May 1977

Abstract

Voice coil temperature is a major cause of loudspeaker damage and failure. It increases according to electrical input and according to the overall heat transfer coefficient of the voice coil. This overall coefficient is a direct result of a variety of heat transfer mechanisms, including conduction, radiation, natural convection, forced convection and heat storage. An analysis (including transient behavior) is presented which includes all factors and provides a final equation for voice coil temperature as a function of electrical input and loudspeaker parameters. The analysis also points to a novel method of heat transfer for all loudspeakers (U.S. Patent #3991286, by the author, assigned to the Altec Corporation).

Details

Published in
AES Convention 57
AES Convention
57
Paper number
1247
Publication date
May 6, 1977
Affiliation
Altec Corporation, Anaheim, CA (See document for exact affiliation information.)
Type
Convention Paper