100mm (4") 2-Way LoudspeakerPlus 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. 2-ohm impedance extracts all the power from amplifies that are designed to increase their power when driving two ohms. Get allof the amplifier power possible with GTO. 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.
