KICKER SOLO-BARIC L7S 8 SQUARE DUAL VOICE COIL SUBWOOFER – 2 OHM. The KICKER® Solo-Baric® L7ST features next-level materials and heat management technology for clear, pounding bass that lasts. 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. Dual Four-Ohm Voice Coils. Patented Corner Ribs Minimize Distortion. SoloKonT 360-Degree Back Bracing. Ribbed Santoprene Surround With Blue Surround Stitching. UniPlateT Back Plate And Pole Piece, Plus Perimeter Venting For Excellent Thermal Management. 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. Mounting Hole Diameter (cm). Recommended Box Volume Sealed (Litres). Recommended Box Volume Ported (Litres).