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US 7,889,876 B2Granted
Loudspeaker driver assemblies
AssigneeSFX Technologies Limited
InventorsIan Hynd, Jordi F. Munoz
Life of this patent
Estimating the term…
Abstract
An improved driver assembly for a panel loudspeaker includes a retaining element for locating the voice coil with respect to the magnet assembly and forming a surface for removable attachment of the driving assembly to a radiating member. In a preferred embodiment, the retaining element is injection moulded from a hydrogel material with Shore A hardness in the range 0 to 20.
Claims27
Driver apparatus for driving a distributed mode loudspeaker, the driver apparatus comprising:
- an actuator operable to move in dependence on an acoustic signal, the actuator comprising a voice coil, a magnet assembly and a substantially rigid planar member coupled to the voice coil and arranged for axial movement with respect to the magnet assembly;
- and
- a coupler formed of a unitary resilient material which covers the planar member and is connected to move with the planar member, the coupler being configured to, in use, couple movement of the actuator to an acoustic radiator to cause the acoustic radiator to operate in a distributed mode fashion, in which the coupler has a Shore A hardness of no more than 20.
Dependencies are inferred from the claim text.