This bundles includes two 10" Solobaric L7 2 Ohm DVC Subwoofers 44L7S102 10" L7S 2 Ohm The Solo-Baric's cutting-edge, square-sub design means more cone area, more air displacement and more volume than a round woofer. Features: Dual Two-Ohm Voice Coils Injection-Molded Polypropylene Cone Patented Corner Ribs Minimize Distortion SoloKon 360-Degree Back Bracing Ribbed Santoprene Surround With Blue Surround Stitching UniPlate Black Plate And Pole Piece, Plus Perimeter Venting For Excellent Thermal Management Thick Tinsel Leads Large Ceramic Magnet Cast Aluminum Basket Satin-Nickel Plated, Spring-Loaded Speaker Terminals *The Solo-Baric L7S 10-Inch Subwoofer works best with a sealed or ported enclosure and 600 watts of recommended power. See below for more details. See below for more details. Specifications Size (IN.,CM) 10, 25.4 Impedance (OHMS) 2 DVC Max Rec Amplifier Power (WATTS PEAK/RMS)* 1200/600 Sensitivity (dB 1w/1m) 86.8 Frequency Response (Hz) 24-100 Mounting Depth (IN.,CM) 6-1/4, 15.9 Mounting Cutout, Square (IN.,CM) 9-5/16, 23.7 Min Rec Sealed Box Volume (CU. FT., Liters) .66, 18.7 Max Rec Sealed Box Volume (CU. FT., Liters) 1.0, 28.3 Min Rec Vented Box Volume (CU. Ft., Liters)** 1.25, 35.4 Max Rec Vented Box Volume (CU. Ft., Liters)** 2.25, 63.8