Horn speaker with linear grooves in a front surface of a pole piece of a yoke
AssigneeIbuki Kogyo Co., Ltd.
InventorYoshishige Shintaku
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Abstract
A horn speaker wherein a pole piece of a yoke is arranged inside an annular permanent magnet and a moving coil which vibrates a diaphragm, is arranged in an air gap between the pole piece and the annular permanent magnet. A plurality of linear grooves are formed in the front surface of the pole piece in order to suppress the generation of the heat of the pole piece and the moving coil.
Claims2
A horn speaker wherein a pole piece of a yoke is arranged inside an annular permanent magnet and a moving coil which vibrates a diaphragm, is arranged in an air gap between the pole piece and the annular permanent magnet, the improvement comprising a plurality of linear grooves formed in the front surface of the pole piece.
Dependencies are inferred from the claim text.