| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a speaker system which is small-sized or thin, improved in low-pitched sound playback capability in particular and suitable for mounting to an amusement machine such as a game machine, a Pachinko machine, a slot machine and the like, and the amusement machine with the same. <P>SOLUTION: A cabinet of the speaker system includes a front sound guide section in which the air is compressed and expanded higher than a case where a sonic wave to be radiated to a front side of a diaphragm is directly radiated to a free space, and the sonic wave is derived to the free space, and a back sound guide section in which a sonic wave to be radiated to a back side of the diaphragm is phase-inverted and then derived to the free space. The front sound guide section includes a sound source space specified in accordance with the edge of a frame supporting the diaphragm and a sound path for deriving the sonic wave radiated from the front side of the diaphragm to the free space. The back sound guide section includes a back side cavity specified by a case forming the cabinet, and a duct communicated to the back side cavity for deriving the sonic wave radiated from the back side of the diaphragm to the free space. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
