WS series ultra-low frequency speakers are precisely modulated by domestic high-performance speaker units, and are mainly used in full-frequency systems as a supplement to ultra-low frequency bands. It has excellent ultra-low frequency reduction ability and is specially designed to fully enhance the bass of the sound reinforcement system. It reproduces the full and strong shocking effect of extreme bass. It also has a wide frequency response and a smooth frequency response curve. It can be loud at high power It still maintains the most perfect bass effect and sound reinforcement in a stressful working environment.