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US 2013/0148841 A1Published application
Acoustic loudspeaker
AssigneeFocal Jmlab
InventorsDaniel Emonts, Arnaud Cazes Bouchet
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Abstract
The invention relates to an acoustic loudspeaker comprising: a magnetic field source; a mobile apparatus including a diaphragm and a winding capable of allowing passage of an electrical current representing the sound signal to be generated and of interacting with said magnetic. Said acoustic loudspeaker is characterized in that the mobile apparatus comprises a second winding, both terminals of which are connected by an essentially resistive component.
Claims4
An acoustic loudspeaker comprising:
- a magnetic field source;
- a moving part comprising a membrane, a coil capable of conducting an electric current representative of the sound signal to be generated, and of interacting with said magnetic field and a second coil having two terminals;
- a set of essentially resistive elements of different resistance values, and means for connecting one of said elements across the terminals of said second coil.
Dependencies are inferred from the claim text.