Improvements to loudspeakers

Details Improvements to loudspeakers Improvements to loudspeakers

H - Electricity

04

R

H04R 9/02 (2006.01) H04R 9/04 (2006.01)

Patent

CA 2753462

The invention relates to a drive unit for a loudspeaker, and a loudspeaker including the same. The drive unit includes a magnet assembly which defines primary and secondary gaps with respect to which a voice coil assembly is movable and in which the same is mounted. The voice coil assembly includes a former which is located and suspended in the secondary gap by ferrofluid provided in said secondary gap, to locate the voice coil assembly without the need for a spider or other mechanical locating means to be provided.

L'invention concerne une unité de commande pour un haut-parleur et un haut-parleur contenant celle-ci. L'unité de commande comprend un ensemble aimant qui définit des espaces primaire et secondaire par rapport auxquels un ensemble bobine acoustique est mobile et dans lesquels ce dernier est installé. L'ensemble bobine acoustique comprend un cadre qui est situé et suspendu dans l'espace secondaire par un ferrofluide disposé dans ledit espace secondaire, pour localiser l'ensemble bobine acoustique sans avoir besoin de fournir un anneau de centrage ou un autre moyen de localisation mécanique.

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