F series it applies to a variety of fixed installation of upscale bars and luxury KTV rooms and various live performances. F series of high-power speaker unit and the cabinet with a lightweight, optimized design by computer, to achieve smooth features, broadening the frequency response characteristics and good control coverage performance. ▲ main features lightweight high-power differential drive woofer ▲ annular compression tweeter diaphragm ▲ polyethylene box with 18 mm plywood, the surface resistant black paint treatment ▲ humane coverage angle design, with a uniform and smooth shaft and partial response to axial ▲ appearance of avant-garde, with dust-proof steel grille of the 16th protective fencing ▲ precise crossover design to optimize the power response and expressive vocal part of the IF ▲ for mounting in a column pole jack ▲ SonicGuard. sound protection technology can effectively protect the HF driver, to avoid overloading the power interruption Germany V. trademark work ▲ rotatable, easy to use when placing