KS Digital ADM-B3, active analog Subwoofer, for C-5, C-8, ADM-30 or ADM-4 with 10" Driver, L/R XLR balanced Analog In/Out, 250W PWM MOSFET Amp, max. SPL 118dB, Frequency Response: 32-80 Hz, Dimensions: 350 x 370 x 420 mm, Weight: 12,5 kg