Harman Becker Automotive Systems Gmbh

Andreas Pfeffer

Michael Schuster

Joerg Prokisch

Markus E Christoph

Manfred Aigner

Xin Liu

Xipeng Ye

Richard Josef Kralik

Maximilian Josef Kneilling

Stefan Erhard Dorr

Philipp Goeppl

A speaker sub-assembly has at least one active segment base segment, at least one batch segment, and a passive end segment. In one or more embodiments, speaker sub-assemblies with batched cones may be attached to each other by way of an adapter segment to create a dual-core speaker with batched cones. In one or more embodiments, speaker sub-assemblies with batched cones may be assembled in parallel, or linearly end-to-end.

Speaker with batched cones

A loudspeaker comprises a first diaphragm, a second passive diaphragm, and a drive unit coupled to the first diaphragm. The drive unit is configured to drive the first diaphragm in a direction of excursion upon applying electrical energy to the drive unit. The second passive diaphragm is arranged opposing the first diaphragm. The second passive diaphragm is mainly driven by sound waves emitted from the first diaphragm.

Loudspeaker

A loudspeaker including a first diaphragm, a second diaphragm spaced from the first diaphragm, a first voice coil coupled to the first diaphragm, a second voice coil coupled to the second diaphragm, and a magnet assembly. The magnet assembly includes a magnet, a magnetic piece and a spacer of non-magnetic material connecting the magnet and the magnetic piece such that a gap is provided between the magnet and the magnetic piece. The first voice coil is arranged at a first end of the gap and the second voice coil is arranged at a second end of the gap opposite the first end of the gap.

A loudspeaker arrangement having a first loudspeaker comprising a first sound radiating surface and a first loudspeaker basket, and a second loudspeaker comprising a second sound radiating surface and a second loudspeaker basket. The first loudspeaker and the second loudspeaker are arranged opposite each other in a first direction, a cavity is formed between a front side of the first loudspeaker and a front side of the second loudspeaker, and the first loudspeaker basket is directly coupled to the second loudspeaker basket.

Opposing loudspeaker arrangement

A loudspeaker assembly for a vehicle includes an enclosure arranged to be positioned outside of a passenger compartment of the vehicle adjacent a first vehicle body panel. The enclosure has a front side, a rear side, a top portion and a substantially enclosed bottom portion, where the top portion includes an outer wall structure. A loudspeaker is mounted in the enclosure and configured to generate an acoustic signal to be radiated into the passenger compartment through an opening in a second vehicle body panel. The enclosure may include a plurality of ribs extending between the loudspeaker and the outer wall structure. A barrier may be disposed within the top portion inward of the outer wall structure and substantially surrounding the loudspeaker. The ribs and the barrier damp high frequencies to reduce propagation of high-frequency noise toward the passenger compartment.

Loudspeaker assembly for a vehicle

A loudspeaker system is provided that includes a loudspeaker that is arranged in a baffle between a passenger compartment of a vehicle and the outside of the passenger compartment. The loudspeaker is configured to radiate an acoustical signal to the passenger compartment. The loudspeaker system further includes active noise control system wherein a microphone is acoustically coupled to the loudspeaker via a secondary path, and the loudspeaker is electrically coupled to the microphone via an active noise control filter.

Growing community of inventors

Wenzenbach, Germany

Andreas Pfeffer