Featuring a 8” Injection Molded Graphite (IMG) Woofer and 1” Pivot Aluminum Dome ABS Tractrix® Horn-Loaded Tweeter, the PRO-18RC brings incredible acoustics with the signature Klipsch sound. Featuring the SecureFit™ Installation System, the Klipsch Professional Series Reference speakers are the ideal choice for custom home installation audio. Features: 8” Injection Molded Graphite (IMG) Woofer 1” Pivot Aluminum Dome ABS Tractrix® Horn-Loaded Tweeter Exclusive, modular SecureFit™ Installation System Bezel-Free square and round paintable magnetic grilles Controlled Dispersion™ Technology Magnetic paint shield