dB Technologies Sub 915, Active 15"" Bass reflex subwoofer with 4"" voice coil, Power: 900 W / RMS, 1800 W / peak, Class D Digipro G3 amplifier, Max. SPL: 134 db, Frequency range: (-10dB): 42 - 110 Hz, 5 Switchable crossover frequencies 70 - 110 Hz, Control 28/56 bit DSP AD / D converter 24 bit / 48Hz, Convection-cooled without fan, Dynamic limiter, RDnet port, Controllable via Aurora Net Software, Switchable delay up to 4.5 ms (21 ms via Aurora Net), Signal input: 1 x XLR female, Signal output: 1 x XLR male, Vertical or horizontal use possible, 2 x M20 pole mount, 2 Handles, Housing made of plywood, Dimensions (W x H x D): 620 x 457 x 620 mm, Weight 34.8 kg, Colour: Black