| Detailed Content Ma Zhang Gymnasium Sound System in Zhanjiang Follow：2291 Time：2018-12-16 15:30 Zhanjiang Ma Zhang Gymnasium covers an area of 2500 square meters, nearly 30 meters from the top to the ground of gymnasium, about 3500 seats. Before the refrom of this gym, reverberation time is 6 second, 5 meters away from the outside voice is basically not clear. After design by our engineer, in surrounding wall perforated plate with sound diffusion， top uses 700 square meters of sound-absorbing body. Now reverberation time is within 2.5 second, voice clear, could be hold proference also! Last：
Sound System of Multi-function Hall in Guangzhou Middle School Next：
Hebei Xuanhuabaidu Slow Club Sound Event |
