Title:
LOUDSPEAKER DRIVER
Document Type and Number:
WIPO Patent Application WO2002039781
Kind Code:
A3
Abstract:
According to a first aspect of the invention there is provided an inertial exciter (40) for an acoustic radiator (42), the exciter comprising a massive member (44); a coupling member (46, 56) adapted for attachement to the acoustic radiator (42) and adapted for relative movement to the massive member (44); a motor for moving the coupling member (46, 56) relative to the massive member; and a suspension (60) for supporting the massive member; and a suspension (60) for supporting the massive member relative to the coupling member. The suspension (60) acts in a plane generally passing through the centre of mass of the massive member, thereby reducing any moment acting on the suspension means. A second aspect of the present invention consists in a loudspeaker exciter assembly (70) comprising a base plate (86) for attachement to an acoustic radiator in a non-repeatedly engageable manner; and an exciter (40) attached to said base plate (86) in a repeatedly engageable manner.
Inventors:
BUOS ANDREAS (GB)
COLLOMS MARTIN (GB)
COLLOMS MARTIN (GB)
Application Number:
PCT/GB2001/004838
Publication Date:
October 30, 2003
Filing Date:
November 01, 2001
Export Citation:
Assignee:
NEW TRANSDUCERS LTD (GB)
BUOS ANDREAS (GB)
COLLOMS MARTIN (GB)
BUOS ANDREAS (GB)
COLLOMS MARTIN (GB)
International Classes:
H04R9/02; H04R9/06; H04R11/02; H04R7/04; (IPC1-7): H04R9/06
Domestic Patent References:
| WO1998034320A2 | 1998-08-06 | |||
| WO2000047013A1 | 2000-08-10 |
Foreign References:
| US4967871A | 1990-11-06 | |||
| US4387275A | 1983-06-07 |
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