Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Magnet-Only Loudspeaker Magnetic Circuits: A Solution for Significantly Lower Current Distortion

Abstract : This paper presents a study case which leads to a significant decrease of current distortion caused by the magnetic circuit of the loudspeaker: the solution consists in removing all of the nonlinear soft-iron pieces that are used in traditional loudspeaker motors. Thus, in the loudspeaker motors we study, the static magnetic field is only created thanks to a combination of permanent magnets. This combination leads to the realization of the so-called magnet-only loudspeakers. Two loudspeakers are compared in the study: the first sample is a mass-produced 6.5 inch loudspeaker. The second sample is built replacing the magnetic circuit of the first loudspeaker by the magnet-only structure. Thus, the moving part, including the voice-coil, the diaphragm and the suspensions, is kept identical for both samples, leading to a comparison of both loudspeakers only based on their motor. The loudspeaker with the magnet-only motor shows significantly lower current distortion than the original loudspeaker. A possible explanation of such a decrease of distortion is given, based on results of a set of measurements with blocked voice-coil.
Type de document :
Article dans une revue
Liste complète des métadonnées

Littérature citée [38 références]  Voir  Masquer  Télécharger

https://hal.archives-ouvertes.fr/hal-02504314
Contributeur : Antonin Novak <>
Soumis le : mardi 10 mars 2020 - 16:08:14
Dernière modification le : jeudi 12 mars 2020 - 08:44:28
Archivage à long terme le : : jeudi 11 juin 2020 - 16:21:05

Fichier

2015_jaes_benoit.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Benoît Merit, Antonin Novak. Magnet-Only Loudspeaker Magnetic Circuits: A Solution for Significantly Lower Current Distortion. Journal of the Audio Engineering Society, Audio Engineering Society, 2015, 63, pp.463-474. ⟨10.17743/jaes.2015.0051⟩. ⟨hal-02504314⟩

Partager

Métriques

Consultations de la notice

112

Téléchargements de fichiers

396