efficiency and improve resolution and detail. LTS tweeters are a hallmark of Klipsch speakers, making them some of the best speakers in the world. SPUN COPPER IMG WOOFERS Injection Molded Graphite (IMG) woofer cones are exceptionally light while being extremely rigid providing remarkable low frequency response, with minimal cone breakup and distortion. When paired with the Tractrix Horn-Loaded LTS Tweeter, it provides speaker efficiency highest in its class. REAR TRACTRIX PORT The rear Tractrix port is perfectly matched to the cabinet and woofers, creating ideal airflow with minimal distortion or turbulence even at the lowest frequencies. SLEEK DESIGN Exposed fasteners, angled feet, low profile magnetic grilles and a scratch-resistant, textured wood grain vinyl give the R-820F floorstanding speaker a polished, modern appearance. HIGH QUALITY CABINET DESIGN Reinforced MDF construction reduces cabinet vibration for less audible coloration and improved sonic accuracy - giving you the ultimate listening experience that's built to last. SPECIFICATIONS FREQUENCY RESPONSE 35Hz - 21kHz +/- 3dB SENSITIVITY 97 dB @ 2.83V/1M POWER HANDLING (CONT/PEAK) 150W/600W NOMINAL IMPEDANCE 8 ohms Compatible CROSSOVER FREQUENCY 1, 700 Hz HIGH FREQUENCY DRIVER 1 Aluminum LTS tweeter mated to a 90 x 90 square Tractrix Horn LOW FREQUENCY DRIVER Dual 8 spun-copper IMG woofers ENCLOSURE MATERIAL MDF ENCLOSURE TYPE Bass-Reflex via rear-firing Tractrix ports INPUTS Single Gold Plated Binding Posts HEIGHT INCHES (MM) 43 (1093 mm) WIDTH INCHES (MM) 10.9 (277 mm) DEPTH INCHES (MM) 17.5 (443 mm) PRODUCT WEIGHT LBS (KG) 54 lbs (24.5 kg) FINISHES Black Textured Wood Grain Vinyl INCLUDED ACCESSORIES Injecton molded feet & screws.