6" x 9" (6" x 9") 3-Way Loudspeaker with Plus One® Woofer Cone and 1" edge-driven My-Ti™ Tweeter and 3/4" My-Ti™ super Tweeter. If you're looking for a 6" x 9" that delivers serious Bass performance while deliver smooth Midrange and high-frequency performance, the GTO938 is the ticket.Plus One® (patent pending) woofer cones - The GTO938 has a cone with more surface area than that found on competing models of the same size. The benefits of Plus One cones are greater efficiency and bass output. My-Ti™ (Mylar®/titanium composite) tweeters - Stiff and light, and extremely efficient, the new JBL® My-Ti tweeters deliver the high-frequency extension of titanium domes with the damping of composite diaphragms. These are not commonly used w-domes, but full edge-driven domes like those found in higher quality home audio speakers. The benefits are increased power handling, reduced distortion and increased efficiency. This technology also allows for better integration with the mid/woofer. The GTO938 also uses a My-Ti supertweeter to deliver every last nuance.