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Convention Paper

New Structure of Loudspeaker

Authors: Lemarquand, Guy

AES Convention 120 · Paper 6846 · May 2006

Abstract

We present a new structure of loudspeaker: the motor is ironless, the suspension is ferro fluidic, the moving part is piston like, with a concave dome. The absence of iron guarantees a small and constant inductance of the moving coil, as well as the absence of Eddy currents. The motor includes two circular joints, one on each side of the moving coil. These joints are ferro fluidic. They fulfil the guidance and centring function and the air tightness function. This structure is quite rigid. As there is no traditional suspension in this structure, the related non-linearities and hysteresis disappear.

Details

Published in
AES Convention 120
AES Convention
120
Paper number
6846
Publication date
May 6, 2006
Session subject
Loudspeakers and Sound Reinforcement
Affiliation
LAUM, UMR CNRS 6613, Universite du Maine (See document for exact affiliation information.)
Type
Convention Paper