HK Audio PREMIUM PR:O 210 SUB D2 Active Sub Stereo I/O Mid/High Out Var XO - 2x10"With its 600 watts of power, the active 2 x 10 woofer in a bass reflex cabinet generates impressive bass reproduction, powerful kick and surprising low end. Thanks to its stereo preamp and corresponding outputs, the subwoofer can be used in a whole host of applications. The two mid high outputs and the adjustable frequency separation in the subwoofer mean that a 2. 1 system, for example, can be created with ease, even with active mid high units that