The TrueLine X118S 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 X118S utilizes a direct radiating 18" 700W 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 18mm thick baffle board construction provide unsurpassed rigidity and strength.