| 摘要 |
PROBLEM TO BE SOLVED: To provide a speaker employing a spherical or hemispherical vibrator with a flat sound pressure characteristic and the excellent sound pressure characteristic. SOLUTION: The speaker 10 includes a hemispherical vibrator 12. An end of the vibrator 12 opposite to its hemispherical cured face is fitted on a major plane of a 1st baffle disk 18. A 2nd baffle plate 20 is placed nearly in parallel with the 1st baffle plate 18 at an opposite side to the 1st baffle plate 18 at which the vibrator 12 is fitted. Four spaces 22 connect the 1st baffle plate 18 and the 2nd baffle plate 20 while placing a space 24 between the both.
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