The Seismix 3, the smallest of the Krix Seismix subwoofer series, uses a 10 inch paper cone. This bass reflex design with a side firing vent offers both speaker level and line level inputs, auto power on with a delay, and a selectable phase control. the internal amplifier is rated at 100 watts and has clipping protection. The crossover is an adjustable (40 to 100 Hz) second order low pass filter. Cabinet fit and finish matched the KDX satellites precisely.