Director Technology The entire speaker pivots allowing the sound to be directed toward the listening area from anywhere in the room. DPSD™ Tweeter Featured in the C68 and C66, this patented tweeter has the greatest output and is able to crossover much lower to either the woofer or the midrange improving both dispersion and the frequency response. Tool-less Mounting System The Zip Clip™ secures the speaker in the ceiling with the exact torque to ensure a tight fit. This is accomplished by squeezing the clips into place and locking the speaker with a twist. Woofer Cone Materials Designed from the ground up, we only use the finest materials for our woofers to ensure optimal performance in response with speed and precision X-Wave™ Woofer Surround This suspension element absorbs unwanted frequencies that reflect up and down the woofer cone to reduce harmonic distortion while maintaining the desired linear travel of the woofer. Compression Molded Baskets These complex baskets that support the woofer cones were computer designed and compression molded with absolute precision allowing for unique support and venting elements to assure peak performance EQ Adjustment These switches on the baffle allows the adjustment of the output of either the high frequencies or both high and low frequencies to custom tailor the sound based on the proximity of the architectural elements of the room.