An outstanding timber matched system from Polk. The Monitor 50 Series ii Towers and CS1 Center Speaker is amazing sound for a medium or larger room. The Polk Audio Monitor 50 Series 2 features a slim tower design with a footprint of less than one square foot to fit anywhere. EXCEPTIONAL SOUND QUALITY The Polk Audio Monitor50B boasts two 5.25" Bi-Laminate composite dynamic balance drivers stiff with good damping for high efficiency, excellent bass and midrange clarity with lower distortion. And a 1-inch Fabric/Polymer Composite Dynamic Balance Dome Tweeter with powerful Neodymium magnet structure delivers clear and detailed high frequency. handles up to 150 watts frequency response 57-24,000 Hz (-3dB) 8-ohm impedance sensitivity 89 dB The CS1 center speaker features dual 5-1/4" Dynamic Balance® woofers and a 1" Dynamic Balance dome tweeter. The woofer cones are stiff and lightweight for rich sound and low distortion. They really excel in the midrange — an absolute must for reproducing clear on-screen dialogue. The non-resonant MDF construction The CS1 is voice-matched to all the speakers in the Polk Monitor 50 speaker. It creates an impressive front soundstage in a large-room home theater setup. frequency response 65-24,000 Hz (-3dB) 8-ohm impedance sensitivity 89 dB handles up to 125 watts Lightly used, sound and look great. SERIOUS OFFERS OR TRADES CONSIDERED