| 摘要 |
PURPOSE:To obtain the composite type speaker system, by enabling to change over the frequency characteristics of medium and high tone speaker at the same time when the speaker is fitted to the location of low tone speaker. CONSTITUTION:A network circuit 2 is assembled at the back of the external circumference 1 of the grille C fitting the medium and high tone speaker A, and the output is connected 4 to the voice coil 3 of the speaker A. Three pairs of input lines are connected to the male terminals 5-7 placed in equal distance on the inner circle of the external circumference 1. The ridge 9 of the diaphragm 8 is fitted on the frame 11 with the packing 10 for the low tone speaker B, female terminal 12 is placed on the external circumference 11 of the frame, the conductor 12b is connected 14 to the relay terminal 13 fitted to the frame 11 and connected 15 with the voice coil of the speaker B and connected 16 with the amplifier. A pair of the male terminals 5-7 to the female terminal 12 is selected when the grille C is changed for the position of insertion to the frame 11 of the speaker B, and the reproduced frequency band of the speaker A can very simply be changed by selecting the characteristics of the circuit 2. |
