SPEAKER DEVICE

摘要

PURPOSE:To decrease the deterioration in sound quality by fitting a woofer to the center in the left and right direction of a buffle plane of an enclosure where both left and right side plates are tilted inside to the buffle plate and its horizontal cross section forms a trapezoid. CONSTITUTION:The horizontal cross section of the enclosure 1 forms a trapezoid, and the relations of dimensions are SS=(WS+WL)/4, where WS is the upper side of the inside dimension of the trapezoid, WL is the lower side, and D is the height, and the woofer 3 is fitted to the center of the lower side of the trapezoid, i.e., the center of the buffle plane 2. The primary standing wave in the forward/backward direction of the enclosure forms the mode taking dotted lines 7 as the node of the sound pressure. The antinode of the mode are formed around the center of a rear plate 6 and around both left and right ends of the buffle plane 2. Thus, the sound pressure exerted to a diaphragm of the speaker 3 placed at the center of the buffle plane 2 is comparatively low and then, the disturbance in the sound pressure by the sound pressure is less.