| 摘要 |
PURPOSE:To form a pair of symmetrical speakers with the same metal mold in order to reduce the cost, by using either one of two cylindrical parts to a bass reflex port and the other to a parts attaching part for an attenuator, etc. CONSTITUTION:Cylindrical parts 11c and 11c of the same form are molded at symmetric positions. The bottom surface 11d of the left cylindrical part 11c is removed after molding by a machining to form a bass reflex port 12. While the component parts and a knob are attached to the right cylindrical part 11c. Thus a speaker system for left channel is obtained as shown by (a). At the same time, a speaker system for right channel is obtained as shown by (b) by attaching the component parts and a knob 7 to the left part 11c after using the right part 11c to a port 12 through a machining. In this case, speakers 13 and 14 are attached to attachment holes 11a and 11b respectively. |
