Combining 2000 watts of digital amplification with twin balanced Aerofoil™ drivers for incredible low-end power and speed, DB1D is the best Bowers & Wilkins subwoofer. Description DB Series Subwoofer Technical features 2000w Class D Hypex amplifier 2 x 300mm (12in) Aerofoil-cone drive units in a balanced configuration Digital preamplifier with Dynamic EQ App-based set-up and BT-LE control Drive units 2 x 300mm (12in) Aerofoil-cone drive units in a balanced configuration Frequency range (-6dB) 8.5Hz - 500Hz Frequency Response -3dB (centered on level at 100Hz) 10Hz - 350 Hz Max Power output 2000W Inputs 2 x XLR 2 x RCA 2 x 3.5mm 12V trigger RS-232 - 9-pin D connector