A speaker array apparatus, comprising: a speaker array that has a plurality of speakers for outputting audio beams (34a, 34b, 34c, 34d) based on a test audio signal; a test sound sweep portion that sweeps the audio beams (34a, 34b, 34c, 34d); a microphone that is placed in a listening position and collects a test sound including direct sounds and reflected sounds of the audio beams (34a, 34b, 34c, 34d) output from the speaker array; a storage portion that stores a signal level of the test sound collected by the microphone, and sweep angles when the audio beams (34a, 34b, 34c, 34d) corresponding to the test sounds are output from the speaker array; a selection portion that selects a plurality of peaks (55-59; 65-69; 70-74; 82-86; 91-97; 101-106; 111-117; 135-139) of the signal level based on the signal level of the test sound stored in the storage portion; and a beam setting portion that sets the sweep angles of the selected plurality of peaks (55-59; 65-69; 70-74; 82-86; 91-97; 101-106; 111-117; 135-139) as beam output angles which are angles to output audio beams of channels of a multi-channel surround-sound respectively; characterized in that the beam setting portion sets a sweep angle of a peak (57, 67, 71, 84, 94, 103, 114, 137) where the signal level of the test sound is the highest, as a beam output angle of a center channel of the multi-channel surround-sound; and when the output angles set for the channels respectively are asymmetric with respect to the beam output angle of the center channel, the beam setting portion forms a signal localization of one of the channels as a phantom using audio beams (34a, 34b, 34c, 34d) directed in a plurality of directions so as to form a symmetric sound field. a speaker array that has a plurality of speakers for outputting audio beams (34a, 34b, 34c, 34d) based on a test audio signal; a test sound sweep portion that sweeps the audio beams (34a, 34b, 34c, 34d); a microphone that is placed in a listening position and collects a test sound including direct sounds and reflected sounds of the audio beams (34a, 34b, 34c, 34d) output from the speaker array; a storage portion that stores a signal level of the test sound collected by the microphone, and sweep angles when the audio beams (34a, 34b, 34c, 34d) corresponding to the test sounds are output from the speaker array; a selection portion that selects a plurality of peaks (55-59; 65-69; 70-74; 82-86; 91-97; 101-106; 111-117; 135-139) of the signal level based on the signal level of the test sound stored in the storage portion; and a beam setting portion that sets the sweep angles of the selected plurality of peaks (55-59; 65-69; 70-74; 82-86; 91-97; 101-106; 111-117; 135-139) as beam output angles which are angles to output audio beams of channels of a multi-channel surround-sound respectively; characterized in that the beam setting portion sets a sweep angle of a peak (57, 67, 71, 84, 94, 103, 114, 137) where the signal level of the test sound is the highest, as a beam output angle of a center channel of the multi-channel surround-sound; and when the output angles set for the channels respectively are asymmetric with respect to the beam output angle of the center channel, the beam setting portion forms a signal localization of one of the channels as a phantom using audio beams (34a, 34b, 34c, 34d) directed in a plurality of directions so as to form a symmetric sound field.