DESC: These 6" x 9" 2-way REV Series speakers feature Aramid fiber composite cone woofers for exceptional sound quality, wave guides for optimal sound dispersion, 1 1/8" soft dome tweeters, and hot yellow cones. The TS-D690Rs handle 330 watts maximum music power and deliver a wide frequency response of 25Hz - 32kHz. A butyl rubber surround and a full-depth basket provide rich, deep bass response, and a glass-imide voice coil bobbin improves heat resistance for higher power handling. And for convenience, the TS-D690R's include a built-in crossover network.