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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.
Author (s): Lemarquand, Guy
Affiliation:
LAUM, UMR CNRS 6613, Universite du Maine
(See document for exact affiliation information.)
AES Convention: 120
Paper Number:6846
Publication Date:
2006-05-06
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Session subject:
Loudspeakers and Sound Reinforcement
Permalink: https://aes2.org/publications/elibrary-page/?id=13650
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Lemarquand, Guy; 2006; New Structure of Loudspeaker [PDF]; LAUM, UMR CNRS 6613, Universite du Maine; Paper 6846; Available from: https://aes2.org/publications/elibrary-page/?id=13650
Lemarquand, Guy; New Structure of Loudspeaker [PDF]; LAUM, UMR CNRS 6613, Universite du Maine; Paper 6846; 2006 Available: https://aes2.org/publications/elibrary-page/?id=13650