US 12,250,531 B2
Loudspeaker
Andreas Helmut Pfeffer, Wenzenbach (DE); and Maximilian Josef Kneilling, Hohenried (DE)
Assigned to Harman Becker Automotive Systems GmbH, Karlsbad (DE)
Filed by Harman Becker Automotive Systems GmbH, Karlsbad (DE)
Filed on Sep. 13, 2022, as Appl. No. 17/943,529.
Claims priority of application No. 21200094 (EP), filed on Sep. 30, 2021.
Prior Publication US 2023/0097602 A1, Mar. 30, 2023
Int. Cl. H04R 9/06 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01)
CPC H04R 9/025 (2013.01) [H04R 9/046 (2013.01); H04R 9/06 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A loudspeaker, comprising:
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;
a magnet assembly comprising 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, wherein 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; and
an elastic element arranged between the first diaphragm and the second diaphragm, wherein a first end of the elastic element is coupled to a center of the first diaphragm, and a second end of the elastic element is coupled to a center of the second diaphragm.