LA-315 is a 3-way,5-element full size full range loudspeaker comprising a 15” LF uint with 4” voice coil, 2×8” MF unit coupled to a device called compression transfer ribbon(CTR), this CTR is coupled to a horn which form part of the enclosure, the HF section is a compression driver with a 3” voice coil and 2” exit are coupled to 2×CTRs and the CTRs are coupled to a horn which form part of the enclosure.The LF unit is folded horn loaded. Several LA-315 to make up a line array is intended for applications of any scales such as large outdoor concert, touring, large arenas and stadiums and large theaters.LA-215B or LA-218B to form a 4-way system. The enclosure is constructed with 3/49(18mm) birch plywood,screwed and glued together for maximum strength and rigidity, and includes a reticulated foam and steel mesh grill. It is finished in black semi-matt textured environmental friendly paint. A rear panel connector plate carries two Neutrik Speakon NL8MP for loop in and loop out connections to additional enclosures.