A speaker device comprising: a pair of speaker systems (1,4), each speaker system (1, 4) having a first speaker unit (2, 5) and a second speaker unit (3, 6); and a signal adjustment part for adjusting a frequency characteristic of an input signal, wherein the speaker systems (1, 4) are configured such that In a condition where the pair of speaker systems (1, 4) are arranged symmetrically with respect to a listening center axis (X1-X2), the first speaker units (2, 5) are arranged symmetrically with respect to the listening center axis (X1-X2), and the second speaker units (3, 6) are arranged symmetrically with respect to the listening center axis (X1-X2), and the first and second speaker units (3, 6) are arranged so that the first speaker unit (2, 5) emits a sound In an inward direction, and the second speaker unit (3, 6) emits a sound in a front direction of the speaker system (1, 4) or in an outward direction as compared with the direction of the first speaker unit (2, 5), where the inward direction is defined as a direction in which the listening center axis (X1-X2) is viewed from each speaker system (1, 4), characterized in that the signal adjustment part is configured so as to adjust the input signal so that the first speaker unit (2, 5) emits a sound at least in a mid-range and above; and the second speaker unit (3, 6) emits a reproduction sound whose treble range is attenuated; and, with respect to a listening position in a front direction of one of the speaker systems (1, 4), the front direction being defined as a direction extending from the speaker system (1, 4) in parallel to the listening center axis (X1-X2), a sound arriving to the listening position from the first speaker unit (2, 5) of the speaker system (1, 4) located closer to the listening position, and a sound arriving to the listening position from the second speaker unit (3, 6) of the same speaker system (1, 4), are destructive to each other in the mid-range owing to a phase difference between the sounds, whereby a sound pressure in the mid-range arriving from the speaker system (1, 4) located closer to the listening position is attenuated more, as compared with a sound pressure in the mid-range arriving from the speaker system (1, 4) located farther from the listening position. a pair of speaker systems (1,4), each speaker system (1, 4) having a first speaker unit (2, 5) and a second speaker unit (3, 6); and a signal adjustment part for adjusting a frequency characteristic of an input signal, wherein the speaker systems (1, 4) are configured such that In a condition where the pair of speaker systems (1, 4) are arranged symmetrically with respect to a listening center axis (X1-X2), the first speaker units (2, 5) are arranged symmetrically with respect to the listening center axis (X1-X2), and the second speaker units (3, 6) are arranged symmetrically with respect to the listening center axis (X1-X2), and the first and second speaker units (3, 6) are arranged so that the first speaker unit (2, 5) emits a sound In an inward direction, and the second speaker unit (3, 6) emits a sound in a front direction of the speaker system (1, 4) or in an outward direction as compared with the direction of the first speaker unit (2, 5), where the inward direction is defined as a direction in which the listening center axis (X1-X2) is viewed from each speaker system (1, 4), characterized in that the signal adjustment part is configured so as to adjust the input signal so that the first speaker unit (2, 5) emits a sound at least in a mid-range and above; and the second speaker unit (3, 6) emits a reproduction sound whose treble range is attenuated; and, with respect to a listening position in a front direction of one of the speaker systems (1, 4), the front direction being defined as a direction extending from the speaker system (1, 4) in parallel to the listening center axis (X1-X2), a sound arriving to the listening position from the first speaker unit (2, 5) of the speaker system (1, 4) located closer to the listening position, and a sound arriving to the listening position from the second speaker unit (3, 6) of the same speaker system (1, 4), are destructive to each other in the mid-range owing to a phase difference between the sounds, whereby a sound pressure in the mid-range arriving from the speaker system (1, 4) located closer to the listening position is attenuated more, as compared with a sound pressure in the mid-range arriving from the speaker system (1, 4) located farther from the listening position.