| 摘要 |
PROBLEM TO BE SOLVED: To appropriately suppress vibration of a speaker by means of small-sized vibration control equipment according to a vibration control equipment and a speaker installing hall. SOLUTION: A multi-step type speaker MS is hung by vibration control equipment 1. A first bracket 10 in the vibration control equipment 1 is fixed on a rear wall made of reinforced concrete, and a second bracket 20 is fixed in a middle portion of the multi-step type speaker MS. The second bracket 20 is hung by the first bracket 10 via a hanging member 30. The hanging member 30 comprises rubber blocks 33, 34 and vibration of the multi-step type speaker MS is suppressed by the rubber blocks 33, 34. COPYRIGHT: (C)2008,JPO&INPIT
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