CS Series CSS67 The CS 6-3/4-Inch Component Speakers are built for awesome sound that plays as long as the ride takes you. CS components include Titanium tweeters and two-way crossovers with tweeter level control with a stiff polypropylene cone and EVC™ (Extended Voice Coil) technology for a customized sound and the best sonic quality. These CS speakers work best with 100 watts of recommended power. See below for more details. Specifications Woofer Size | in [mm] 6 3/4 [165] Tweeter Size | in [mm] 3/4 [20] Dome Material Titanium Peak Power | [watts] 300 Continuous Power | [watts RMS] 100 Effective Frequency Range | Hz 35-21k Woofer Mounting Hole Diameter | in [mm] 5 1/2 [140] Woofer Bottom Mount Depth | in [mm] 1 13/16 [47] Flush Mounting Tweeter Hole Diameter | in [mm] 1 9/16 [40] Flush Mount Tweeter Depth | in [mm] 9/16 [14.5] High Pass | dB, at Frequency | Hz 12, 4000 Low Pass | dB, at Frequency | Hz 12, 4000 High Frequency Output Attenuation | dB 0, 3, & 6 Bolt-Thru Grilles Yes