The JBL Club 3020 is a pair of 3.5 inch 2-way coaxial car speakers designed for compact factory openings. They use a Plus One polypropylene woofer cone and an edge-driven PEI balanced dome tweeter for improved midrange and extended frequency response. Power handling is up to 20 watts RMS (60 watts peak), impedance is 3 ohms, sensitivity is 86.5 dB and top-mount depth is 1-7/16 inch; connect using standard speaker wiring to compatible factory or aftermarket head units.