This sound system includes a first sound device including a plurality of first speakers and a plurality of first microphones, and a second sound device including a plurality of second speakers and a plurality of second microphones. The first sound device includes: a device detector that detects the second sound device connected to a network; a test audio transmitter/receiver that acquires, via the plurality of first microphones, test audio output from the plurality of second speakers; a speaker sound source localizer that performs sound source localization with respect to the plurality of second speakers based on the test audio acquired by the test audio transmitter/receiver; a position calculator that calculates positions of the plurality of second speakers relative to the first sound device; and a position notifier that notifies the second sound device of position information representing the positions calculated by the position calculator.