| 摘要 |
A first speaker unit A has a first yoke 31, a first vibrating film 33 supported by the first yoke 31, a first vibrating film 33 supported in the first yoke 31, and a fist driving part 35 supported in the first yoke 31, for driving the first vibrating film 33 by an applied voice signal, and a second speaker unit B has a second yoke 49, a second vibrating film 51 supported by the second yoke 49, and a second driving part supported in the second yoke 49, for driving the second driving film 51 by the voice signal, wherein the first speaker unit A and the second speaker unit B are integrally formed with a space between the first and second vibrating films 33 and 53 set in an airtight state, and the first and second vibrating films 33 and 53 are driven so as to be displaced and vibrated in the same direction. |
