Acoustically damped, UV-resistant polypropylene cone Every Club speaker’s woofer cone is designed to deliver clean, non-resonant sound quality, while standing up to the demanding heat and humidity of the car environment. Plus One™ woofer cone architecture Harman’s patented (US patent #7,548,631) Plus One™ cones provide more overall speaker-cone area than other cones in its class — the result is higher sensitivity, increased low-frequency output and greater musical character. PEI balanced dome tweeters Club speakers play smooth, clear high frequencies with excellent dispersion, thanks to the PEI balanced dome tweeters. High-sensitivity design Club speakers’ efficiency produce plenty of sound from the power they’re fed, making them ideal for any application, even when they’re driven by relatively low-powered factory stereos. Adjustable tweeter output level The new added model -club 6522 offer a tweeter output level control of 0dB or +3dB to optimize system linearity based on installation location. Reduced critical dimensions Club speakers are available in a range of standard sizes, and feature a compact design that allows them to fit in just about any vehicle on the road today. That means signature JBL sound in more vehicles. Competitive pricing Club speakers provide signature JBL sound at affordable prices.