Infinity 527I Kappa Series 5-1/4-Inch 2-Way Multielement Loudspeaker (Pair) New for 2005 is the redesigned .7-Series that features UniPivot a patented rotating tweeter system Plus One (patent pending) woven-glass-fiber woofer cone Edge-driven MMD-dome tweeter with UniPivot (patent no. 6,002,780)