The TrueLine X115S is designed to satisfy the need for an extreme high-SPL sub bass loudspeaker system. Components have been selected solely for their performance. The TrueLine X115S utilizes a direct radiating 15-inch, 1,200W cone driver in a tuned enclosure, which provides maximum output with minimal distortion and smooth extended low frequency response. The tour-tested 15 ply Baltic birch, highly-braced enclosure and 15mm thick baffle board construction provide unsurpassed rigidity and strength.