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JPS5911596

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DESCRIPTION JPS5911596
[0001]
Brief description of the drawings
[0002]
FIG. 1 is a longitudinal sectional view showing a conventional one, FIG. 2 is an enlarged view of
an essential part of FIG. It is a comparison figure which shows the sound pressure frequency
characteristic of the thing of 1 illustration and the thing of 3rd illustration. 1 ... voice coil, 2a ...
voice coil core made of metal, 3a ... diaphragm made of metal.
11-05-2019
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