Klipsch SW-112 Reference Series 12-Inch Powered subwoofer Type: Subwoofer Driver Units: 12" (30.5cm) Active non-resonant Woven Fiberglass driver Power Rating: Amplifier Power: 300W continuous @ Frequency Response: 26Hz-120Hz e 3dB Connectors: Inputs: L/R Line-level RCA jacks, L/R High-level speaker binding posts, WA port Remote Control: No Power Supply: 100-120V / 220-240V~50/60Hz 3.15A (Auto-voltage switching) Dimensions & Weight: 16.00" x 14.50" x 19.00" (H x W x D) / 46.00 lbs.