Multiple voice-coil cone-driver
AssigneeHarman International Industries, Incorporated
InventorMichael Noll
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Abstract
A multiple voice-coil cone-driver for driving a loudspeaker includes a first voice-coil, and a second voice-coil coupled in parallel to the first voice-coil. Together, the first and second voice-coils in parallel are characterized by a baseline frequency response with an upper threshold frequency. In addition, at least one additional voice-coil (e.g., a third voice-coil) is coupled in parallel to the first and second voice-coils. The additional voice-coil(s), in conjunction with the first and second voice-coils, provide an enhanced frequency response in comparison to the baseline frequency response. One aspect of the enhanced frequency response is that it has an extended upper threshold frequency compared to the baseline frequency response, providing for more accurate reproduction of music and speech from a single speaker.
Claims20
A multiple voice-coil cone-driver for driving a loudspeaker cone, the multiple voice-coil cone-driver comprising:
- a first voice-coil;
- a second voice-coil coupled in parallel to the first voice-coil, the first and second voice-coils in parallel characterized by a baseline frequency response with an upper threshold frequency;
- a third voice-coil coupled in parallel to the second voice-coil, the third voice-coil, in conjunction with the first and second voice-coils, providing an enhanced frequency response that extends beyond the upper threshold frequency of the baseline frequency response;
- and
- a voice-coil former supporting at least one of the first, second, and third voice-coils.
A loudspeaker comprising:
- a loudspeaker enclosure;
- a magnet system in the enclosure;
- a loudspeaker cone;
- and
- a cone-driver connected to the loudspeaker cone and the magnet system, the cone-driver including:
- a first voice-coil;
- a second voice-coil coupled in parallel to the first voice-coil, the first and second voice-coils in parallel characterized by a baseline frequency response with an upper threshold frequency;
- a third voice-coil coupled in parallel to the second voice-coil, the third voice-coil, in conjunction with the first and second voice-coils, providing an enhanced frequency response that extends beyond the upper threshold frequency of the baseline frequency response;
- and
- a voice-coil former supporting at least one of the first, second, and third voice-coils.
A multiple voice-coil cone-driver for driving a loudspeaker cone, the multiple voice-coil cone-driver comprising:
- a first voice-coil;
- a second voice-coil coupled in parallel to the first voice-coil, the first and second voice-coils in parallel characterized by a baseline frequency response with an upper threshold frequency;
- means for providing an enhanced frequency response for the cone-driver that extends beyond the upper threshold frequency of the baseline frequency response;
- a voice-coil former supporting at least one of the first and second voice-coils;
- and
- a single source input coupled to the first voice-coil for accepting signal input from a single source.
Dependencies are inferred from the claim text.