Abstract: A linear motor magnet assembly for use in a loudspeaker unit, with a fixed base actuator component and a membrane actuating element, the membrane actuating element having a linear excursion axis. A first auxiliary magnetic element and a second auxiliary magnetic element are present, the first auxiliary magnetic element providing a first auxiliary spatial magnetic field with a major axis aligned with the linear excursion axis. The second auxiliary magnetic element is fixedly connected to the membrane actuating element of the linear motor magnet assembly and has a second auxiliary spatial magnetic field, the second auxiliary magnetic field overlapping the first auxiliary spatial magnetic field and being substantially similarly oriented as the first auxiliary spatial magnetic field over a first predetermined excursion range of the linear motor magnet assembly.

Abstract: A linear motor magnet assembly for use in a loudspeaker unit, with a fixed base actuator component and a membrane actuating element, the membrane actuating element having a linear excursion axis. A first auxiliary magnetic element and a second auxiliary magnetic element are present, the first auxiliary magnetic element providing a first auxiliary spatial magnetic field with a major axis aligned with the linear excursion axis. The second auxiliary magnetic element is fixedly connected to the membrane actuating element of the linear motor magnet assembly and has a second auxiliary spatial magnetic field, the second auxiliary magnetic field overlapping the first auxiliary spatial magnetic field and being substantially similarly oriented as the first auxiliary spatial magnetic field over a first predetermined excursion range of the linear motor magnet assembly.

Abstract: Membrane unit for a speaker device, the membrane unit comprising a membrane and at least two coils. The respective longitudinal axes of the at least two coils are arranged in parallel along a main axis, a main surface being formed perpendicular to the main axis. The at least two coils are positioned adjacent to each other and mechanically connected to the membrane, the membrane being substantially flat and having a major surface parallel to the main surface. Wiring to the at least two coils is provided at least partly on a flat part of the membrane.

Abstract: A loudspeaker device includes first and second diaphragms arranged co-axially in an opposed relation to each other and having a rear volume in-between, each diaphragm having a plurality of motors operatively coupled thereto, and a frame having first and second ends, and first and second rims provided at the first and second ends, respectively. The motors of the first and second diaphragms are arranged in the same plane, and the motors are provided on the frame around the periphery of the first and second diaphragms.

Abstract: A linear motor magnet assembly for use in a loudspeaker unit, with a fixed base actuator component and a membrane actuating element, the membrane actuating element having a linear excursion axis. A first auxiliary magnetic element and a second auxiliary magnetic element are present, the first auxiliary magnetic element providing a first auxiliary spatial magnetic field with a major axis aligned with the linear excursion axis. The second auxiliary magnetic element is fixedly connected to the membrane actuating element of the linear motor magnet assembly and has a second auxiliary spatial magnetic field, the second auxiliary magnetic field overlapping the first auxiliary spatial magnetic field and being substantially similarly oriented as the first auxiliary spatial magnetic field over a first predetermined excursion range of the linear motor magnet assembly.

Abstract: A speaker device comprising two membranes facing each other, and two drive units arranged for driving the two membranes in opposite direction in operation. A vented frame element and a closed frame element are positioned outward on either side of the two membranes. At least one bellows element is connected on a first side to the membrane which is positioned closest to the closed frame element, and connected on a second side to the closed frame element.

Abstract: A loudspeaker device includes first and second diaphragms arranged co-axially in an opposed relation to each other and having a rear volume in-between, each diaphragm having a plurality of motors operatively coupled thereto, and a frame having first and second ends, and first and second rims provided at the first and second ends, respectively. The motors of the first and second diaphragms are arranged in the same plane, and the motors are provided on the frame around the periphery of the first and second diaphragms.

Abstract: A linear motor magnet assembly 2 for use in a loudspeaker unit 1, with a fixed base actuator component 4 and a membrane actuating element 5, the membrane actuating element 5 having a linear excursion axis A. A first auxiliary magnetic element 7 and a second auxiliary magnetic element 8 are present, the first auxiliary magnetic element 7 providing a first auxiliary spatial magnetic field with a major axis aligned with the linear excursion axis A. The second auxiliary magnetic element 8 is fixedly connected to the membrane actuating element 5 of the linear motor magnet assembly 2 and has a second auxiliary spatial magnetic field, the second auxiliary magnetic field overlapping the first auxiliary spatial magnetic field and being substantially similarly oriented as the first auxiliary spatial magnetic field over a first predetermined excursion range E1 of the linear motor magnet assembly 2.

Abstract: Membrane unit for a speaker device, the membrane unit (1) comprising a membrane (2) and at least two coils (3). The respective longitudinal axes of the at least two coils (3) are arranged in parallel along a main axis (A), a main surface being formed perpendicular to the main axis (A). The at least two coils (3) are positioned adjacent to each other and mechanically connected to the membrane (2), the membrane (2) being substantially flat and having a major surface (S) parallel to the main surface. Wiring (4, 5, 6) to the at least two coils (3) is provided at least partly on a flat part of the membrane (2).

Abstract: A speaker device (1) comprising two membranes (7) facing each other, and two drive units (2) arranged for driving the two membranes (7) in opposite direction in operation. A vented frame element (8) and a closed frame element (9) are positioned outward on either side of the two membranes (7). At least one bellows element (5) is connected on a first side to the membrane (7) which is positioned closest to the closed frame element (9), and connected on a second side to the closed frame element (9).

Abstract: A loudspeaker device comprises first and second diaphragms (12, 14) arranged co-axially in an opposed relation to each other to cancel mechanical vibrations. Each diaphragm has multiple voice coils, with the voice coils of the first and second diaphragms (12, 14) arranged in the same plane to reduce the height of the loudspeaker device.

Abstract: A speaker device (1) having a frame (2), two opposite directed diaphragms (3, 3?), and two speaker drivers, each having at least one magnetic driver (10, 10?) for driving the two opposite directed diaphragms (3, 3?) in operation. A speaker damper (5, 5?) is associated with each of the two opposite directed diaphragms (3, 3?), and has a coil bracket (4, 4?) arranged to be driven by the associated at least one magnetic driver (10, 10?), a diaphragm connection member (6, 6?) arranged to fixedly attach the diaphragm (3, 3?) to the speaker damper (5, 5?), and a damper frame connection member (8, 8?) arranged to fixate the speaker damper (5, 5?) to the frame (2). The speaker damper (5, 5?) further comprises a damper leg member (7, 7?) arranged between the diaphragm connection member (6, 6?) and the damper frame connection member (8, 8?).

Abstract: A speaker unit includes a speaker frame and two opposing membranes each being arranged to move up and down along a main speaker axis (A). Two drive units are present for each membrane, having a driver static part and a driver moving part. A sealing edge suspension is connected to a perimeter of the associated membrane and to the major front surface and major back surface of the speaker unit, respectively. For each driver moving part, a spider arm suspension is present for suspending the driver moving part to the speaker frame in a flexible manner. The sealing edge suspension is at least partially positioned above the associated drive units when viewed in a direction parallel to the main speaker axis (A).

Abstract: Loudspeaker unit with a membrane (2) and a plurality of drive units (5) driving the membrane (2). Each of the plurality of drive units (5) has n voice coils (3) and at least n+1 magnets (4), n being an integer larger than or equal to 1. The magnets (4) have an axial magnetization and are stacked in axial direction with similar pole parts of adjacent ones of the at least n+1 magnets facing each other. The at least n+1 magnets (4) are separated in the stack over a magnet separation distance (dm), the magnet separation distance (dm) being substantially equal to a width (ws) in the stack direction of the at least n voice coils (3).

Abstract: A speaker device (1) having a frame (2), two opposite directed diaphragms (3, 3?), and two speaker drivers, each having at least one magnetic driver (10, 10?) for driving the two opposite directed diaphragms (3, 3?) in operation. A speaker damper (5, 5?) is associated with each of the two opposite directed diaphragms (3, 3?), and has a coil bracket (4, 4?) arranged to be driven by the associated at least one magnetic driver (10, 10?), a diaphragm connection member (6, 6?) arranged to fixedly attach the diaphragm (3, 3?) to the speaker damper (5, 5?), and a damper frame connection member (8, 8?) arranged to fixate the speaker damper (5, 5?) to the frame (2). The speaker damper (5, 5?) further comprises a damper leg member (7, 7?) arranged between the diaphragm connection member (6, 6?) and the damper frame connection member (8, 8?).

Abstract: A loudspeaker device comprises first and second diaphragms (12, 14) arranged co-axially in an opposed relation to each other to cancel mechanical vibrations. Each diaphragm has multiple voice coils, with the voice coils of the first and second diaphragms (12, 14) arranged in the same plane to reduce the height of the loudspeaker device.