Power amplifier and method for split voice coil transducer or speaker
First Claim
1. A switching power amplifier for connection to a split voice coil of a speaker, the split voice coil having a first coil and a second coil located in a magnetic field, the first coil and the second coil being wired such that current can be provided to one coil without providing current to the other coil, the power amplifier comprising:
- a) a first branch for providing a first audio current to the first coil;
b) a second branch for providing a second audio current to the second coil, wherein the first audio current differs from the second audio current, and c) a transformer for transferring energy between the first branch and the second branch such that both the first audio current and the second audio current constructively contribute to a force provided to the voice coil.
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Accused Products
Abstract
The present invention relates to a method and power amplifier for providing an audio current comprising a first audio current and a second audio current to a split voice coil speaker having a first coil and a second coil located in a magnetic field. The first coil and the second coil are wired such that current can be provided to one coil without providing current to the other coil. The first audio current is provided to a first branch connected to the first coil. The second audio current is provided to a second branch connected to the second coil. The first audio current differs from the second audio current. The first audio current in the first coil and the second audio current in the second coil are oriented such that both the first audio current and the second audio current constructively contribute to a force provided to the voice coil.
30 Citations
30 Claims
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1. A switching power amplifier for connection to a split voice coil of a speaker, the split voice coil having a first coil and a second coil located in a magnetic field, the first coil and the second coil being wired such that current can be provided to one coil without providing current to the other coil, the power amplifier comprising:
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a) a first branch for providing a first audio current to the first coil;
b) a second branch for providing a second audio current to the second coil, wherein the first audio current differs from the second audio current, and c) a transformer for transferring energy between the first branch and the second branch such that both the first audio current and the second audio current constructively contribute to a force provided to the voice coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of providing an audio current comprising a first audio current and a second audio current to a split voice coil speaker having a first coil and a second coil located in a magnetic field, the first coil and the second coil being wired such that current can be provided to one coil without providing current to the other coil, the method comprising:
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a) providing the first audio current to a first branch connected to the first coil;
b) providing the second audio current to a second branch connected to the second coil, wherein the first audio current differs from the second audio current;
c) orienting the first audio current in the first coil and the second audio current in the second coil such that both the first audio current and the second audio current constructively contribute to a force provided to the voice coil. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A speaker comprising:
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a split voice coil having a first coil and a second coil located in a magnetic field, the first coil and the second coil being wired such that current can be provided to one coil without providing current to the other coil, and, a power amplifier comprising (a) a first branch for providing a first audio current to the first coil;
(b) a second branch for providing a second audio current to the second coil, wherein the first audio current differs from the second audio current, and (c) a transformer for transferring energy between the first branch and the second branch such that both the first audio current and the second audio current constructively contribute to a force provided to the voice coil. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification