| 摘要 |
PROBLEM TO BE SOLVED: To provide a speaker equipped with a speaker cabinet capable of accelerating an internal propagation velocity and providing the sounds of good rising while using duralumin by applying tension to this. SOLUTION: A speaker 1 is composed of a cabinet composed of six duralumin panels 2a, 2b, 3a, 3b, 4a and 4b and a speaker unit 5. Then, the upper, lower, left and right panels 2a, 2b, 3a and 3b are formed while respectively having smooth curved surfaces and the respective facing upper/lower, left/right and front/rear panels 2a/2b, 3a/3b and 4a/4b are assembled while being mutually pulled by through screw rods 6a/6b, 7a/7b and 8a/8b in the state of loading tension.
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