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Convention Paper

Ironless Motor Loudspeaker: Quantization of the Subjective Enhanced Sound Quality

Authors: Ceruti, Daniele; Guyader, Gaël; Lemarquand, Guy; Remy, Mathias; Six, Marc-François; Toppi, Romolo

AES Convention 129 · Paper 8192 · November 2010

Abstract

This paper presents a set of measurements realized on two automotive loudspeakers. These two loudspeakers have the exact same moving part and suspensions parts but different motors. The first one is equipped with a traditional production model motor made of ferrite and iron whereas the second one gets a prototype of ironless motor made totally of permanent magnets. Blind listening tests performed with these two speakers showed a significant advantage of perceived sound quality for the ironless motor loudspeaker. Several types of measurements have been realized in order to try to quantify and explain this sound quality enhancement. Results are given in this paper.

Details

Published in
AES Convention 129
AES Convention
129
Paper number
8192
Publication date
November 6, 2010
Session subject
Loudspeaker Design and Amplifiers
Affiliation
Faital S.p.A., Fabbrica Italiana Altoparlanti S.p.A., Donato Milanese (MI), Italy; Hutchinson S.A., Chalette-sur-Loing Cedex, France; Laboratoire d'Acoustique de l'Université du Maine, Le Mans Cedex, France; Technocentre Renault, Guyancourt, France (See document for exact affiliation information.)
Type
Convention Paper