A6 system is an expandable linear array system. Its full-frequency A6 and ultra-low a6-sub/a6-sub A are combined to form A passive or active linear array system. The design of the A6 full frequency box is in full compliance with all WST requirements -- true linear arrays are strictly governed by the physical definition of WST.It comes with a 10-inch woofer and two 1-inch treble drives.In 10 inches in front of the box body compression cavity phase plug (compression will chamber phase plug-in) combined with through the coupling between two high drive the optimization of the waveform generator, the vertical wave form a 10 °, generate very thick in the low frequency and bright treble.