Abstract: A loudspeaker system includes a housing including a first housing portion and a second housing portion that are plate-shaped and face each other, a loudspeaker drive unit fixed to the first housing portion, and a coupling member that is rigid and couples the first housing portion and the second housing portion to each other inside the housing. The coupling member includes a first end that is directly or indirectly coupled to the first housing portion and a second end that is directly or indirectly coupled to the second housing portion. When second force is applied to the coupling member, the second force being smaller than first force that irreversibly deforms or breaks a coupling portion between the coupling member and the first housing portion, the coupling member is irreversibly deformed or broken so as to shorten a distance between the first end and the second end of the coupling member.

Abstract: A loudspeaker system includes a housing including a first housing portion and a second housing portion that are plate-shaped and face each other, a loudspeaker drive unit fixed to the first housing portion, and a coupling member that is rigid and couples the first housing portion and the second housing portion to each other inside the housing. The coupling member includes a first end that is directly or indirectly coupled to the first housing portion and a second end that is directly or indirectly coupled to the second housing portion. When second force is applied to the coupling member, the second force being smaller than first force that irreversibly deforms or breaks a coupling portion between the coupling member and the first housing portion, the coupling member is irreversibly deformed or broken so as to shorten a distance between the first end and the second end of the coupling member.

Abstract: A headset supported on a head of a wearer while passing around the head includes a bone conduction speaker, a contact type microphone, a frame that supports the bone conduction speaker and has elasticity, and a movable part configured to change a distance between the bone conduction microphone and the frame. This configuration can provide a headset that is easily worn by the wearer.

Abstract: A head set configured to be worn on the head of a human body includes a communicator configured to communicate with an external device, speakers configured to output, as voices, signals received by the communicator, detectors configured to detect whether or not the head set is being worn on the head, a vibration generator configured to generate vibrations for applying vibrations to the human body, a supporting portion configured to support the communicator, the speakers, the detectors and the vibration generator, and a controller configured to cause the vibration generator to vibrate, when the communicator is being in a signal-arriving state, and the head set not being worn on the head is being detected by the detectors.

Abstract: A headset supported on a head of a wearer while passing around the head includes a bone conduction speaker, a contact type microphone, a frame that supports the bone conduction speaker and has elasticity, and a movable part configured to change a distance between the bone conduction microphone and the frame. This configuration can provide a headset that is easily worn by the wearer.