Membrane structure for loudspeaker

Procede de fabrication d'une membrane pour haut-parleurs et membrane obtenue

Abstract

La membrane pour haut-parleur du type comprenant une structure sandwich, est remarquable en ce qu'elle comprend un corps central thermoformé (1a) réalisé en une mousse synthétique et présentant de part et d'autre deux couches, l'une apparente (1B), l'autre arrière (1c) réalisées en un matériau de tissu de verre.
The conical loudspeaker structure (1) is made up of three layers. The structure has a thermoformed spongy central support section (1a) and two outer glass sections. The outer and inner glass sections (1b,1c) are formed of glass tissue, with the outer section thicker than the inner section. Thicknesses are optimised for the loudspeaker size and application. The design gives a better acoustic frequency response.

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Patent Citations (5)

    Publication numberPublication dateAssigneeTitle
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NO-Patent Citations (1)

    Title
    PATENT ABSTRACTS OF JAPAN vol. 10 no. 168 (E-411) ,14 Juin 1986 & JP-A-61 019298 (SANSUI) 28 Janvier 1986,

Cited By (5)

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    FR-2853803-A1October 15, 2004Focal JmlabMembrane pour haut-parleur d'enceinte acoustique haute fidelite, multicouches, multimateriaux
    WO-0070910-A2November 23, 2000New Transducers LimitedEnceintes acoustiques
    WO-0070910-A3April 05, 2001New Transducers Ltd, Charles BreamBending wave panel loudspeakers
    WO-2004095882-A1November 04, 2004Focal-Jmlab (Sa)Multi-layered membranes consisting of a plurality of materials, for the loudspeaker of a high fidelity loudspeaker cabinet
    WO-2014106713-A1July 10, 2014Focal JmlabMembrane de haut-parleur, et procede de fabrication d'une telle membrane