The bass unit adopts Nd-type high-energy magnetic and strong magnetic circuit system, which improves the motive force of each unit to obtain more ideal sound pressure and quality. The unique double-backward cabinet makes its phase get better atlas, so that it has a beautiful and clear hierarchy, so that you can enjoy the most sound at the fever level. The professional 2-way 2-way frequency division speaker is designed, and 12 "bass driving unit and 1.75" treble driving unit are installed in the trapezoidal box. Scope of application: Main expansion or auxiliary function of small places (high-end KTV rooms, nightclubs, private clubs, music venues, multi-functional halls, conference rooms, etc.).