Infinity Kappa 693.9I 3-Way, 6 x 9 Inches Co-Axial Loudspeaker - Set of 2 Plus One woven-glass-fiber woofer cones deliver greater surface area for increased bass response and efficiency Edge-driven MMD-dome tweeter for clear high-frequencies Edge-driven UHF Super Tweeter for extended frequency response True 4-ohm topology is optimized to deliver maximum output whether it's a factory or aftermarket headunit Direct-Connect crossover dongle means easy installation