The TrueLine XQ10-P is designed to satisfy the need for an extreme high SPL extended bass loudspeaker system. Components have been selected solely for their performance. The TrueLine XQ10-P utilizes 4 each (quad) direct radiating 10-inch 250W cone drivers 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.