The Solo-Baric revolves around KICKER's most advanced cone design, the injection-molded SoloKon™. The 360-degree, constant-contact back bracing adheres directly to every contour of the square cone, adding targeted strength, reliable performance and accurate response for the super-clean bass you've been looking for. Kicker L7S124 12"1500 Watt Solobaric L7S Car Subwoofer Solo-Baric 44L7S12-4. Dual Four-Ohm Voice Coils. Injection-Molded Polypropylene Cone. Patented Corner Ribs Minimize Distortion. SoloKon™ 360-Degree Back Bracing. Ribbed Santoprene Surround With Blue Surround Stitching.