LD Systems Curv 500 SE, Active Subwoofer Extension for Curv 500 Systems, Equipped with: 10"" Woofer, Power: 300 W subwoofer, 160 W satellite, 1200 W subwoofer peak, 640W satellite peak, DSP based multi-band limiter, Switchable ground lift, System in/out, Speaker Twist satellite out, M20 stand flange, Dimensions (W x H x D): 325 x 383 x 491 mm, Weight: 16.5 kg