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Brief description of the drawings
FIG. 1 is a cross-sectional view of an essential part of an embodiment of the present invention
shown with an enlarged thickness direction, FIG. 2 is a front view of an edge portion substrate in
the same above, and FIGS. FIG. 5 is a front view of the edge portion substrate of the embodiment,
and FIG. 5 is a cross-sectional view of the main part of another embodiment showing the
thickness direction in an enlarged manner. 1 ...... speaker diaphragm, 2 ...... diaphragm portion, 3
...... edge portion, 4 ...... edge portion substrate, 5 ..... resin coating 6 ...... edge segment, 7 ......
cutout, 7a ...... cut.