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JPS604093

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DESCRIPTION JPS604093
[0001]
Brief description of the drawings
[0002]
FIG. 1 is a cross-sectional view of a conventional dome speaker, FIG. 2 is a cross-sectional view of
the dome speaker of the present invention, and FIG. 3 is a frequency characteristic diagram of
the conventional dome speaker and the dome speaker of the present invention. 1 is a magnetic
circuit, 2 is a center pole, 3 is a through hole, 4 is a cylinder, 5 is a cavity, 6 is a back cover, 7 is a
back chamber, 8 is a voice coil, 9 is a diaphragm, 10 is a sound absorbing material is there.
Correction Correct the name of the device of 58.10.31 as follows. ■ The dome type loudspeaker
utility model registration request and the brief description of the drawings are corrected as
follows. O Practical model registration claims ■ In a dome-shaped speaker in which a domeshaped diaphragm 9 is coupled to a voice coil 8 fitted in a magnetic gap of a magnetic circuit 1, a
through hole is formed in the center pole 2 constituting the magnetic circuit 1. A cylinder 4
having an inner diameter equal to that of the through hole 3 is fixed to the back surface of the
magnetic circuit 1 so as to communicate with the through hole 3 to form a cavity 5. A domeshaped speaker characterized in that a back cover is formed by the back cover 6. 2. A domeshaped speaker according to claim 1, wherein a sound absorbing material 10 is provided inside
the cavity 5 and / or the back chamber 7. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a
sectional view of a conventional dome-shaped speaker, FIG. 2 is a sectional view of the domeshaped speaker of the present invention, and FIG. 3 is frequency characteristics of the
conventional dome-shaped speaker and the dome-type speaker of the present invention. FIG. 1 is
01-05-2019
1
a magnetic circuit, 2 is a center pole, 3 is a through hole, 4 is a cylinder, 5 is a cavity, 6 is a back
cover, 7 is a back chamber, 8 is a voice coil, 9 is a diaphragm, 10 is a sound absorbing material is
there.
01-05-2019
2
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