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US 2006/0233403 A1Published application
Multi speaker unit and audio reproduction apparatus
AssigneeYamaha Corporation
InventorRyuji Nakagawa
Life of this patent
Estimating the term…
Abstract
A multi speaker unit includes a permanent magnet that has a north pole and a south pole, a yoke that is opposed to the north pole and the south pole of the permanent magnet with first and second gaps, a first voice coil that is arranged in the first gap between the north pole of the permanent magnet and the yoke, a second voice coil that is arranged in the second gap between the south pole of the permanent magnet and the yoke, and first and second vibrating parts that are fixed to the first and second voice coils.
Claims9
A multi speaker unit, comprising:
- a permanent magnet that has a north pole and a south pole;
- a yoke that is opposed to the north pole and the south pole of the permanent magnet with first and second gaps;
- a first voice coil that is arranged in the first gap between the north pole of the permanent magnet and the yoke;
- a second voice coil that is arranged in the second gap between the south pole of the permanent magnet and the yoke;
- and
- first and second vibrating parts that are fixed to the first and second voice coils respectively.
3 more elements
A multi speaker unit, comprising:
- a permanent magnet that has a north pole and a south pole;
- a yoke that is opposed to the north pole and the south pole of the permanent magnet with first and second gaps respectively;
- a first voice coil that is arranged in the first gap between the north pole of the permanent magnet and the yoke;
- a second voice coil that is arranged in the second gap between the south pole of the permanent magnet and the yoke;
- and
- first and second vibrating parts that are fixed to the first and second voice coils respectively,
- wherein the permanent magnet is formed in a tube shape;
- and
- wherein the yoke is arranged inside the permanent magnet.
6 more elements
Dependencies are inferred from the claim text.