What is it?A range of portable passive speakers designed for general purpose use across a “multitude of demanding audio environments”.DetailsSaid to bring true professional performance, power handling and durability down an affordable price point, the series includes the 300W 12” PRX412M, the 300W 15” PRX415M, the 600W dual 15” PRX425 models along with the 18” PRX418 subwoofer rated at 800W. Frequency response is quote at 50Hz - 20kHz for the 12” model, 55Hz - 19kHz for the 15”, 48Hz - 19kHz for the dual 15” and 35Hz - 250Hz for the sub. Cabinets are constructed from 18mm birch/poplar laminate finished in resilient DuraFlex and featuring 16-gauge steel grilles. All full range models utilize twelveM10 suspension points for safe deployment in light duty installations. In common with all JBL Professional products, PRX400 Series speakers are subjected to the company’s 100-hour power test of continuous, high-level input as well as a barrage of environmental/strength tests of harsh temperatures and humidity conditions. All models also incorporate JBL’s Sonic Guard speaker protection circuit designed to automatically attenuate potential HF overload conditions. The range is designed to work with Crown Audio’s XLS DriveCore and XTi2 Series - the latter incorporating enhanced pre-set performance tunings including crossover points for a sat/subwoofer setup plus parametric filtering. PRX400 tunings will also be available in the dbx DriveRack PA+ signal processor/complete loudspeaker management system.And another thing…The PRX412M and PRX415M can be used as main or monitor speakers and with the addition of the PRX418 sub provide a sub/sat system capable of delivering 135dB output.