The entertainment audio system in the home care service of Xinqiao Community in Jiaxing, Zhejiang Province was carefully selected, and finally the Bella professional audio entertainment fixed installation series was selected. According to the characteristics of the auditorium's sound field, Beilarly's engineers adopted the TC high-end entertainment series as the main sound reinforcement, so that the sound field of the entire lobby was not only evenly covered, but also the sound quality was clear, making the mid-range round and full, the high frequency is delicate, and the low-frequency dive Full; ensure that every corner of the lobby can enjoy a perfect music experience.