SPEAKER SYSTEM FOR WALL MOUNTING

摘要

PURPOSE:To prevent noise sound produced from a back plate knocking on a wall by sticking a vibration-proof member at the surrounding of a screw through-hole of the back plate. CONSTITUTION:A screw guide section 11 is prolonged with a step to a part of a through-hole 10 so that the section 11 is concentric to the screw through-hole 10 and smaller than the diameter. An emboss 12 is provided to a position opposite to the through-hole 10 on a front panel 9. A screw 13 tightens the back plate 17 and a panel 9 by tightening the step part and the emboss 12 of the through-hole 10. A projection 14 provided around the through-hole 10 is to keep the air-tightness between the back plate 7 and the panel 9 by means of a gasket and its outer diameter is made slightly smaller than the inner diameter of an annular vibration-proof member 8. Even if the vibration-proof member 8 is fitted to the back plate 7 by using a bonding member or a pressure-sensing bonding member or the like in this way, no position offset occurs because of the presence of the projection 14. Through the constitution above, even if a large input enters a speaker, the vibration is absorbed by the vibration-proof member 8 and not delivered to the wall.