A speaker device , comprising: a first speaker unit configured to emit sound in accordance with an acoustic signal that is input thereto; a second speaker unit that has a sound emission direction different from a sound emission direction of the first speaker unit and a large diameter as compared to the first speaker unit , and is configured to receive an acoustic signal including a frequency band of the acoustic signal input to the first speaker unit ; a first light receiving element configured to output a first photocurrent in accordance with a received optical signal; a second light receiving element which is different in a set light receiving direction from the first light receiving element , and is configured to output a second photocurrent in accordance with a received optical signal; a cabinet to which the first light receiving element , the second light receiving element , the first speaker unit , and the second speaker unit are provided, the cabinet being installable in two states including a first state in which the light receiving direction of the first light receiving element is directed to an operation position and a second state in which the light receiving direction of the second light receiving element is directed to the operation position; and a control unit configured to detect whether the cabinet is in the first state or the second state in accordance with the first photocurrent and the second photocurrent, wherein the cabinet is configured such that the sound emission direction of the first speaker unit is directed to a listening position in the first state , and the sound emission direction of the second speaker unit is directed to the listening position in the second state. a first speaker unit configured to emit sound in accordance with an acoustic signal that is input thereto; a second speaker unit that has a sound emission direction different from a sound emission direction of the first speaker unit and a large diameter as compared to the first speaker unit , and is configured to receive an acoustic signal including a frequency band of the acoustic signal input to the first speaker unit ; a first light receiving element configured to output a first photocurrent in accordance with a received optical signal; a second light receiving element which is different in a set light receiving direction from the first light receiving element , and is configured to output a second photocurrent in accordance with a received optical signal; a cabinet to which the first light receiving element , the second light receiving element , the first speaker unit , and the second speaker unit are provided, the cabinet being installable in two states including a first state in which the light receiving direction of the first light receiving element is directed to an operation position and a second state in which the light receiving direction of the second light receiving element is directed to the operation position; and a control unit configured to detect whether the cabinet is in the first state or the second state in accordance with the first photocurrent and the second photocurrent, wherein the cabinet is configured such that the sound emission direction of the first speaker unit is directed to a listening position in the first state , and the sound emission direction of the second speaker unit is directed to the listening position in the second state. <EOS>