The dual 0.75" tweeters of the P-27S are horn-loaded, with 90 degree by 70 degree coverage from the Tractrix horns. The bass is powered by dual 7" hybrid cone woofers. Each woofer's voice coil responds to every little signal accurately, but these woofers can also deliver heavy low end when needed. The dual front-firing ports of this speaker help to eliminate bass distortion when things get loud. There are color options available for the Klipsch P-27S surround speaker.