Infinity Kappa Series loudspeakers embody technological breakthroughs that make them, quite simply best in class. If you are looking for sound quality that rivals the best home audio systems, then Kappa is the ideal choice.Plus One woofer cones patent pending technology delivers a cone with more surface area than competing models of the same size. The result is increased bass output and higher efficiency.Edge-driven MMD dome tweeter are not commonly used W-domes, but fully edge driven domes like those found in fine home audio loudspeakers. This much larger voice coil increases power handling and provides better sonic integration with the mid-woofer.Woven glass fiber woofer cone material is extremely stiff, minimizing cone flex which yields very low distortion and improved clarity, an Infinity trademark.SLI high-output design. Conventional 4-ohm speakers do not leverage all of the power available from today"s car audio amplifiers and high-powered head units. This topology extracts every last watt from the amplifier source, increasing overall system output and efficiency.Computer-optimized voice-matched crossovers - Each Kappa multi-element and component system features a crossover that has been voice-matched using audiophile grade air core inductors and polypropylene capacitors. The result is flawless performance with incredible detail and accuracy.Adjustable tweeter level-Each Kappa component system features a user adjustable tweeter level control on the passive crossover.