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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of an
embodiment of the present invention. 1 ······ Flat diaphragm, 2 ······· Voice coil bobbin. 3 ...... voice
coil, 4 ...... edge, 5 ...... under Nreto, 6 ...... macro 'net, 7 ...... on Burenido. 8・・・・・・フレーム
[Detailed Description of the Invention] The present invention is directed to the Hirata j speaker.
In the conventional speaker, since it was a floating plate or a circular bowl shape, it was a smallpitched ability to vibrate the entire surface of the diaphragm in phase in all voice bands.
Therefore, the present invention is made to solve the above problems. The details will be
described in accordance with F. One of the voice coil bobbin 2 and the edge 4 on which the voice
coil 6 is wound is bonded to the circumferential surface of the flat diaphragm 1, and the other
end of the edge 4 is fixed to the frame 8. The magnet (1) is arranged in the hollow portion of a
magnetic circuit composed of 1 /-/: L2 · / 6 and the upper plate 7. That is, when the present
invention is used, since the voice coil 6 and the plano-concave diaphragm 1 are structurally
integrated, the movement of the voice coil 6 can be faithfully transmitted to the moving plate 1
in a plane, and moreover, the plane & moving plate Since 1 is flat, it becomes possible to vibrate
all the questions of the moving plate 1 in a plane in the 1T11 phase by removing all questions
from the firing fire zone.
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