An array speaker system, comprising: array speakers (20, 33) which are adapted to generate sound beams having a plurality of different directivities for generating a surround sound source containing front channels (FL, FR) and rear channels (RL, RR) by utilizing a wall reflection; a frequency band dividing unit (11, 12; 51, 52) which is adapted to divide a signal on the front channels (FL, FR) into a first high frequency band signal and a first low frequency band signal at a first crossover frequency, and to divide a signal on the rear channels (RL, RR) into a second high frequency band signal and a second low frequency band signal at a second crossover frequency; characterized by a first outputting unit (14-1 to 17-1 through 14-5 to 17-5; 54-1 to 57-1 through 54-5 to 57-5) which is adapted to shape the first high frequency band signal in the signal on the front channels (FL, FR) in a frequency band higher than the first crossover frequency and the second high frequency band signal in the signal on the rear channels (RL, RR) in a frequency band higher than the second crossover frequency into a sound beam, and to then output shaped signals; and a second outputting unit (14-6 to 19-6; 14-7 to 19-7; 54-6 to 56-6) which is adapted to output the first low frequency band signal in the signal on the front channels (FL, FR) in a frequency band lower than the first crossover frequency and the second low frequency band signal in the signal on the rear channels (RL, RR) in a frequency band lower than the second crossover frequency wherein the first and second low frequency band signals are thus not shaped into the sound beam; wherein the second crossover frequency is set to a higher frequency than the first crossover frequency. array speakers (20, 33) which are adapted to generate sound beams having a plurality of different directivities for generating a surround sound source containing front channels (FL, FR) and rear channels (RL, RR) by utilizing a wall reflection; a frequency band dividing unit (11, 12; 51, 52) which is adapted to divide a signal on the front channels (FL, FR) into a first high frequency band signal and a first low frequency band signal at a first crossover frequency, and to divide a signal on the rear channels (RL, RR) into a second high frequency band signal and a second low frequency band signal at a second crossover frequency; characterized by a first outputting unit (14-1 to 17-1 through 14-5 to 17-5; 54-1 to 57-1 through 54-5 to 57-5) which is adapted to shape the first high frequency band signal in the signal on the front channels (FL, FR) in a frequency band higher than the first crossover frequency and the second high frequency band signal in the signal on the rear channels (RL, RR) in a frequency band higher than the second crossover frequency into a sound beam, and to then output shaped signals; and a second outputting unit (14-6 to 19-6; 14-7 to 19-7; 54-6 to 56-6) which is adapted to output the first low frequency band signal in the signal on the front channels (FL, FR) in a frequency band lower than the first crossover frequency and the second low frequency band signal in the signal on the rear channels (RL, RR) in a frequency band lower than the second crossover frequency wherein the first and second low frequency band signals are thus not shaped into the sound beam; wherein the second crossover frequency is set to a higher frequency than the first crossover frequency.