This bundles includes two 8" Solobaric L7 2 Ohm DVC Subwoofers 44L7S82 8" L7S 2 Ohm The Solo-Baric L7S's square sub design delivers dependable bass - even when pushed to the limit. Dual voice coils with high-temp copper windings easily handle intense heat and power levels for clean, clear bass anytime. 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 8-Inch Subwoofer works best with a sealed or ported enclosure and 450 watts of recommended power. See below for more details. Specifications Size (IN.,CM) 8, 20.32 Impedance (OHMS) 2 DVC Max Rec Amplifier Power (WATTS PEAK/RMS)* 900/450 Sensitivity (dB 1w/1m) 83.6 Frequency Response (Hz) 28-100 Mounting Depth (IN.,CM) 4-3/4, 12.1 Mounting Cutout, Square (IN.,CM) 7-1/4, 18.4 Min Rec Sealed Box Volume (CU. FT., Liters) .33, 9.4 Max Rec Sealed Box Volume (CU. FT., Liters) .75, 21.2 Min Rec Vented Box Volume (CU. Ft., Liters)** .66, 18.6 Max Rec Vented Box Volume (CU. Ft., Liters)** 1.0, 28.3