Dual 12-inch three-way large line array speakers, with two  51mm voice coil  neodymium magnet tweeters, four 6.5-inch midrange units, two 12-inch woofers, the classic appearance of the design and the system of high precision tuning, high-frequency units as the core of the wavefront axis, the midrange and low-frequency range of moving units completely symmetrical structure design, forming a common symmetrical coupling wavefront, to achieve simple, accurate and symmetrical acoustic coverage, so that each listening point to get a number of quality sound and the same smooth frequency response. Listening point to get a number of quality sound and the same smooth frequency response, while ensuring a precise and coherent sound performance and strong dynamic impact, suitable for large fixed installation and large mobile sound reinforcement system.