Abstract: There is provided a loudspeaker including a frame; a magnet unit to guide magnetic flux across an air gap; a diaphragm suspended from the frame; the diaphragm includes a neck portion forming a aperture; a voice coil assembly including a voice coil and a voice coil former; the voice coil former extends through the aperture such that a first gap is formed between the voice coil former and the neck portion of the diaphragm and a second gap is formed between the neck portion and the voice coil; a body of hardened adhesive occupies the first gap between the voice coil former and the neck portion and the second gap between the neck portion and the voice coil; the loudspeaker energises the voice coil to cause the voice coil assembly to move relative to the magnet unit along a movement axis, moving the diaphragm along the axis to produce sound.

Abstract: There is provided a loudspeaker wherein a frame is moulded with a magnet system such that the frame extends through an aperture in the magnet system. By moulding the frame to extend as a single piece through an aperture, the frame can be attached to the magnet system without glue. The aperture in the magnet system extends from one side to another. By forming the frame to extend over the opening at each side, the frame can be securely connected to the magnet system. The aperture in the magnet system extends between a first surface and a second surface. The first surface and the second surface are on opposed sides of the magnet system. By the frame extending over at least a portion of the first and second surfaces, the frame extends over the apertures and securely connects the frame and magnet system, forming a unitary part.

Abstract: There is provided a loudspeaker wherein a frame is moulded with a magnet system such that the frame extends through an aperture in the magnet system. By moulding the frame to extend as a single piece through an aperture, the frame can be attached to the magnet system without glue. The aperture in the magnet system extends from one side to another. By forming the frame to extend over the opening at each side, the frame can be securely connected to the magnet system. The aperture in the magnet system extends between a first surface and a second surface. The first surface and the second surface are on opposed sides of the magnet system. By the frame extending over at least a portion of the first and second surfaces, the frame extends over the apertures and securely connects the frame and magnet system, forming a unitary part.

Abstract: A loudspeaker system comprising: a loudspeaker assembly including a diaphragm, a magnet assembly, and a voice coil assembly, wherein the magnet assembly and voice coil assembly are drivably coupled to the diaphragm to displace the diaphragm to transmit pressure waves as audible sound, an enclosure arranged to enclose the loudspeaker assembly and including a back face and a front face, wherein said back face extends over the magnet assembly, and the magnet assembly is mechanically coupled to the back face and/or side face of the enclosure and the diaphragm is coupled to a front face of the enclosure, wherein the magnet assembly and diaphragm are directly connected to each other by a collapsible basket or said loud speaker assembly does not comprise a basket coupling the magnet assembly and diaphragm.

Abstract: A loudspeaker includes: a non-perforated membrane having a front surface facing in a forward direction for producing sound to be radiated outwardly from the loudspeaker in the forward direction and a back surface facing in a backward direction opposite to the forward direction, a magnet unit configured to provide a magnetic field in a predetermined region of space, a voice coil rigidly connected to the membrane, and configured to produce in use a magnetic field which interacts with the magnetic field provided by the magnet unit in the predetermined region of space so as to move the membrane along a longitudinal axis of the loudspeaker, a lead wire configured to input a signal to the voice coil. The lead wire is guided to the voice coil via one or more deformed holders. The lead wire remains at a single surface of the membrane without perforating the latter.

Abstract: A loudspeaker system comprising: a loudspeaker assembly including a diaphragm, a magnet assembly, and a voice coil assembly, wherein the magnet assembly and voice coil assembly are driveably coupled to the diaphragm to displace the diaphragm to transmit pressure waves as audible sound, an enclosure arranged to enclose the loudspeaker assembly and including a back face and a front face, wherein said back face extends over the magnet assembly, and the magnet assembly is mechanically coupled to the back face and/or side face of the enclosure and the diaphragm is coupled to a front face of the enclosure, wherein the magnet assembly and diaphragm are directly connected to each other by a collapsible basket or said loud speaker assembly does not comprise a basket coupling the magnet assembly and diaphragm.

Abstract: A loudspeaker including a diaphragm having a front surface facing in a forward direction for producing sound to be radiated outwardly from the loudspeaker in the forward direction and a back surface facing in a backward direction that is opposite to the forward direction; a magnet unit configured to provide magnetic field in a predetermined region of space; a voice coil rigidly connected to the diaphragm, wherein the voice coil is configured to produce a magnetic field in use which interacts with the magnetic field provided by the magnet unit in the predetermined region of space so as to move the diaphragm along a longitudinal axis of the loudspeaker; a flexible dustcap attached to the diaphragm and an attachment surface of the loudspeaker that is fixed with respect to the magnet unit and is located radially inwards of the voice coil relative to the longitudinal axis of the loudspeaker.

Abstract: A loudspeaker including a diaphragm having a front surface facing in a forward direction for producing sound to be radiated outwardly from the loudspeaker in the forward direction and a back surface facing in a backward direction that is opposite to the forward direction; a magnet unit configured to provide magnetic field in a predetermined region of space; a voice coil rigidly connected to the diaphragm, wherein the voice coil is configured to produce a magnetic field in use which interacts with the magnetic field provided by the magnet unit in the predetermined region of space so as to move the diaphragm along a longitudinal axis of the loudspeaker; a flexible dustcap attached to the diaphragm and an attachment surface of the loudspeaker that is fixed with respect to the magnet unit and is located radially inwards of the voice coil relative to the longitudinal axis of the loudspeaker.