KRK 12sHO, Active 12"" Subwoofer with Kevlar Diaphragm, Power: 400 W, Frequency response: 29 - 160 Hz (sweepable crossover frequency, adjustable from 60 Hz to 160 Hz), Max. (sound pressure level): 123 dB (peak), LFE input for 5.1 systems, Variable tuning of integrated crossover and low-pass filter, Limiter, Ground lift, Rotatable phase- and polarity switch, True bypass, Dimensions (H x W x D): 508 x 508 x 571 mm, Weight: 49.7 kg, Includes a footswitch@+*Connections:*@+@+, 2 Line inputs: Combo XLR / 6.3 mm jack, balanced, 2 Line outputs: XLR, balanced, Dedicated LFE channel with combo XLR / 6.3 mm jack connector, Footswitch input: 6.3 mm jack for bypass function