The ultimate Polk Audio loudspeaker.

• 51-inch Floorstanding Loudspeaker.
• Audiophile components -- Enhanced Ring Radiator Tweeter & Dynamic Balance Midrange driver in an exclusive Dynamic Sonic Engine configuration, and Cassini Oval Subwoofer Drivers -- optimized for superior music and home theater audio reproduction.
• Exclusive Polk Audio patented technologies.
• High quality, resonant-free MDF enclosure with internal bracing, beautiful furniture-grade hardwood veneer cabinet finishes, and sleek trim accents and no visible screws.
• PowerPort Bass Venting smoothly transitions air flow from the bass port for bigger deep bass impact.