Diancheng Middle School, Dianbai District, Maoming City

The school playground is 80 meters wide and 120 meters long. The school requires the sound system to be able to play background music, can shout, the sound pressure is high enough, the sound is clear, can cover the entire playground without dead corners, and can also meet the needs of the school sports meeting at ordinary times. Due to the large range of the playground, a total of 8 ZRSO (natural forest) outdoor waterproof sound columns ZR-66 were selected. The sound column is equipped with 6 6-inch bass units, 4 horn tweeters, high frequency up to 18Khz, low frequency up to 90HZ, penetrating and extremely strong, perfectly restoring the sound of each range. The sound column is evenly hung around the playground to ensure uniform sound pressure in all areas. The power amplifier uses ZRSO (Natori) ZR-C2000. The power amplifier uses Japanese original Toshiba tube, with sufficient reserve power, wide dynamic range, and perfect audio signal amplification. The power amplifier has multiple protection functions of output short circuit, overload and overheating, ensuring the stability of the whole system. The whole system is simple and easy to operate. It has achieved the needs of the school and has been affirmed by the school. I am very satisfied