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Brief description of the drawings
FIG. 1 is a cross-sectional view showing a conventional flat panel loudspeaker, FIG. 2 is a crosssectional view showing one embodiment of the present invention, and FIG. 3 is a front view of the
drive cone of FIG. In the figure, 1 is a diaphragm, 2 is an edge, 3 is a drive cone, 4 is a voice coil,
5 is a damper, 6 is a frame, 7 is a magnetic circuit, and 8 is a hole. In the drawings, the same
reference numerals indicate the same or corresponding parts.