F-215 is a high sound pressure output dual 15 inch, two frequency trapezoidal enclosure. It uses two 15 inch (380mm) on bass and a 1.7 inch (44mm) the treble coil driver. Features are: the level of good, clear and bright, can produce 250Hz frequency. The driver had low to mid frequency device with low distortion of the special design, the work can be reached 16000Hz crossover, suitable for large conference rooms, entertainment bar and outdoor play and other occasions.