2700W, Class D (similar to ICE) Carver Sunfire 10" ACTIVE subwoofer for sale. Sold with custom pwrlink RCA-breakout cable - use the sub's amplitude, phase and crossover to match your B&O main speakers. Terrific, floor shaking base down to 30Hz (if corner loaded, almost down to 20 Hz).  Works perfectly. Some minor cosmetics. $500 Complete with pwrlink cable, plus shipping.  Located in LI, NY. Contact bsantini@fnol.net