Klipsch CDT-2800-C II In-Ceiling Speaker - White (Each) 1 Silk dome tweeter mated to a swiveling 100 round Tractrix Horn 8 (16.51cm) Polypropylene cone woofer Updated with new low-profile design Elegant new, low-profile SlimTrim magnetic grille Sure-Grip Mounting Dogs. Controlled Dispersion Technology (CDT) directs both the high and low frequencies towards the listening area