4'' (100mm) 2-way Loudspeaker with Plus One ® Woofer Cone, My-Ti Tweeter and Low-Q design.Plus One (patent pending) woofer cones - The GTO427 has a cone with more surface area than competing models of the same size. The benefits of Plus One are greater efficiency and bass output. True Four Ohm - GTO Series speakers can be safely driven by any head unit. My-Ti (Mylar/titanium composite) tweeters. Stiff and light, extremely efficient, JBL's new My-Ti tweeters deliver the high-frequency extension of titanium domes with the damping of composite diaphragms.
