Speaker with fine grain ferromagnetic material on center pole or ring
    2.
    发明授权
    Speaker with fine grain ferromagnetic material on center pole or ring 失效
    扬声器在中心极或环上具有细粒铁磁材料

    公开(公告)号:US4289937A

    公开(公告)日:1981-09-15

    申请号:US37893

    申请日:1979-05-10

    IPC分类号: H04R9/02 H01F1/00 H04R9/06

    CPC分类号: H04R9/025 Y10T29/49075

    摘要: A speaker comprises a voice coil placed in an air gap between a center pole and a plate wherein a specific ferromagnetic material obtained by forming fine crystalline grains is used on at least one of the surfaces of the center pole and the plate which respectively face the voice coil, thereby providing a speaker having low distortion.

    摘要翻译: 扬声器包括放置在中心极和板之间的气隙中的音圈,其中通过形成细晶粒获得的特定铁磁材料被用在分别面对声音的中心极和板的至少一个表面上 线圈,从而提供具有低失真的扬声器。