Abstract: A loudspeaker comprising: a mounting frame; an acoustic radiator; a drive unit. The drive unit includes: a magnet assembly including a magnet unit configured to provide a magnetic field in an air gap, wherein the air gap extends around a movement axis of the inertial exciter; a coil assembly, and a drive unit suspension. The coil assembly includes: an attachment portion which provides an attachment between the coil assembly and the acoustic radiator; a voice coil; a voice coil former which extends from the attachment portion into the air gap, wherein the voice coil is mounted to the voice coil former so the voice coil sits in the air gap when the drive unit is at rest; a tubular member, which is positioned radially outwardly of the voice coil former with respect to the movement axis, and which overlaps the voice coil former along a portion of the movement axis.

Abstract: The present invention provides a loudspeaker assembly for use on the outside of a vehicle. The diaphragm and surround are formed of a single piece of material, the material comprising a single layer woven fabric of orthogonal, woven fibers and a thermoset resin.

Abstract: A loudspeaker configured to be mounted in a seat assembly is disclosed. The loudspeaker includes: a diaphragm having a first radiating surface and a second radiating surface, wherein the first radiating surface and the second radiating surface are located on opposite faces of the diaphragm; a drive unit configured to move the diaphragm based on an electrical signal; a loudspeaker support structure, wherein the diaphragm is suspended from the loudspeaker support structure via one or more loudspeaker suspension elements.

Abstract: A loudspeaker assembly includes: a chassis; a loudspeaker, including a drive unit and a diaphragm. The diaphragm includes a body portion and inner and outer suspension portions, wherein the body portion extends between the inner and outer suspension portions. The drive unit moves the body portion along a movement axis. The body portion has a front face facing forwards and a rear face facing rearwards parallel to the movement axis. The outer suspension portion is integral with the body portion, and is attached to the chassis at a first attachment location such that the body portion is suspended from the chassis. The inner suspension portion is integral with the body portion, and is attached to the chassis at a second attachment location such that the body portion is suspended from the chassis. The first and second attachment locations have separate first and second positions along the axis, respectively.

Abstract: The present invention provides a loudspeaker assembly for use on the outside of a vehicle. The diaphragm and surround are formed of a single piece of material, the material comprising a single layer woven fabric of orthogonal, woven fibers and a thermoset resin.

Abstract: A loudspeaker assembly for use outdoors. The loudspeaker assembly includes: a loudspeaker, including a drive unit and a diaphragm, wherein the drive unit is configured to move the diaphragm along a movement axis, a grille, positioned in front of a front face of the loudspeaker, the grille being configured to permit sound produced by the front face of the diaphragm to pass through the grille, and to inhibit the ingress of water incident on the front face of the grille from entering into a space enclosed between a rear face of the grille and the front face of the loudspeaker.

Abstract: A dipole loudspeaker for producing sound at bass frequencies. The dipole loudspeaker includes: a diaphragm having a first radiating surface and a second radiating surface, wherein the first radiating surface and the second radiating surface are located on opposite faces of the diaphragm; a drive unit configured to move the diaphragm at bass frequencies such that the first and second radiating surfaces produce sound at bass frequencies, wherein the sound produced by the first radiating surface is in antiphase with sound produced by the second radiating surface; a frame, wherein the diaphragm is suspended from the frame via one or more suspension elements, wherein the frame is configured to allow sound produced by the first radiating surface to propagate out from a first side of the dipole loudspeaker and to allow sound produced by the second radiating surface to propagate out from a second side of the dipole loudspeaker.

Abstract: A loudspeaker comprising: a mounting frame; an acoustic radiator; a drive unit. The drive unit includes: a magnet assembly including a magnet unit configured to provide a magnetic field in an air gap, wherein the air gap extends around a movement axis of the inertial exciter; a coil assembly, and a drive unit suspension. The coil assembly includes: an attachment portion which provides an attachment between the coil assembly and the acoustic radiator; a voice coil; a voice coil former which extends from the attachment portion into the air gap, wherein the voice coil is mounted to the voice coil former so the voice coil sits in the air gap when the drive unit is at rest; a tubular member, which is positioned radially outwardly of the voice coil former with respect to the movement axis, and which overlaps the voice coil former along a portion of the movement axis.

Abstract: A loudspeaker configured to be mounted in a seat assembly is disclosed. The loudspeaker includes: a diaphragm having a first radiating surface and a second radiating surface, wherein the first radiating surface and the second radiating surface are located on opposite faces of the diaphragm; a drive unit configured to move the diaphragm based on an electrical signal; a loudspeaker support structure, wherein the diaphragm is suspended from the loudspeaker support structure via one or more loudspeaker suspension elements.

Abstract: A dipole loudspeaker for producing sound at bass frequencies. The dipole loudspeaker includes: a diaphragm having a first radiating surface and a second radiating surface, wherein the first radiating surface and the second radiating surface are located on opposite faces of the diaphragm; a drive unit configured to move the diaphragm at bass frequencies such that the first and second radiating surfaces produce sound at bass frequencies, wherein the sound produced by the first radiating surface is in antiphase with sound produced by the second radiating surface; a frame, wherein the diaphragm is suspended from the frame via one or more suspension elements, wherein the frame is configured to allow sound produced by the first radiating surface to propagate out from a first side of the dipole loudspeaker and to allow sound produced by the second radiating surface to propagate out from a second side of the dipole loudspeaker.