Cambridge SoundWorks Newton Series P200 Powered Subwoofer (Discontinued by Manufacturer) 10" polymer laminate cone with high excursion suspension 200 watt B.A.S.H. amplifier with discrete MOSFET output stage Phase Control switch, and Level Control Low frequency -3dB point-25Hz / 35Hz. Switchable Frequency Response-25 - 200Hz. (Dependent on Cutoff and crossover settings.)