Jiangsu Guorui Hotel is located at Gulou Square in the center of Nanjing, Jiangsu Province, adjacent to the city government in the east, Xinjiekou in the commercial center in the south, and provincial agencies such as the provincial government in the west, and is close to the famous Hunan Commercial Street in the north. The multi-purpose lecture hall of the hotel requires perfection and excellence in professional equipment and sound. After careful selection, the Beilarly professional sound equipment is finally selected. According to the size and function requirements of the lecture hall, the Beilarly engineer selected the Q4 line array series of sound, so that the sound field of the entire lecture hall was not only evenly covered, but also the sound quality was clear and high fidelity, making the intermediate frequency round and full The frequency is delicate and the low frequency dive is full of flexibility, ensuring that the sound of each corner of the lecture hall is thick and the tone is bright and prominent.