The QSA-210 is a two way passive line array speaker featuring Two 10” neodymium magnet woofers and Two 1” exit (1.7” voice coils) neodymium magnet HF drivers. A single QSA 210 cabinet handles 500w RMS at 8 ohms and delivers 127dB SPL. The system is based on a totally new technology, The Isophasic Plane Wave Generator. The isophasic plane wave generator utilizes path length equalization technology, which generates planar wave fronts over a wide operating band.