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Convention Paper

High-Efficiency Direct-Radiator Loudspeaker Systems

Authors: Vanderkooy, John; Boers, Paul M.

AES Convention 113 · Paper 5651 · October 2002

Abstract

Direct-radiator loudspeakers become more efficient as the total magnetic flux is increased, but the accompanying equalization and amplifier modify the gains thus made. We study the combination of an efficient high-Bl driver with several amplifier types, including a highly efficient class-D amplifier. Comparison is made of a typical simulated driver, excited with a few different amplifier types, using various audio signals. The comparison is quite striking as the Bl value of the driver increases, significantly favouring the class-D amplifier.

Details

Published in
AES Convention 113
AES Convention
113
Paper number
5651
Publication date
October 6, 2002
Session subject
Transducers
Affiliation
Audio Research Group, Dept. of Physics, University of Waterloo, Waterloo, ON Canada ; Philips Research Labs, Eindhoven, The Netherlands (See document for exact affiliation information.)
Type
Convention Paper