Over 40 years of tweeter innovation, design and prototyping has led to the development of the new 1” high definition Pinnacle ring radiator tweeter. Developed by Polk Audio, it delivers ultra-clear, crisp highs without unwanted coloration or distortions. The Pinnacle tweeter features a finely tuned waveguide that dramatically improves the dispersion of high frequency energy ensuring a broad “sweet spot” while the critically damped rear-chamber helps defeat any unwanted resonances. Hi-Res Audio certified, the Pinnacle Tweeter is designed for today’s two-channel music listening as well as multi-channel 3D audio found in movies, sports, and video game soundtracks.

Flagship Turbine Cone Design

Polk developed the Turbine cone specifically for our flagship products to ensure the natural reproduction of the mid-range, to which human ears are particularly sensitive. These Turbine cones combine Polk’s proprietary foam core and molded Turbine geometry which dramatically increase stiffness and damping, without adding mass. You will hear every detail and experience a smooth, detailed mid-range and effortless bass.

Power Port 2.0

Polk’s new Power Port 2.0 is the latest version of our successful Power Port technology. In addition to Power Port’s carefully engineered port design that smooths the flow of air as it exits the cabinet through the port, X-Port adds a set of closed-pipe absorbers that are specifically tuned to unwanted cabinet and port resonances. Together, these two technologies combine to function as Power Port 2.0 to deliver smooth, detailed audio. Combined with dual 8” woofers you’ll get louder, cleaner bass while minimizing turbulence and port noise.

Premium Cabinets Built for Better Performance

Polk believes cabinets should be beautiful and add nothing to the playback. Polk Reserve cabinets, braces, and internal enclosures are precisely engineered to minimize unwanted internal standing waves and eliminate unwanted resonances. Laser Doppler Vibrometer (LDV) designed, the advanced precision point to point braced cabinets with individual enclosures mid and low-frequency transducers combined with new Cabinet Resonance Control (CRC) eliminate unwanted panel resonances. The result is a cabinet that rigidly holds the transducer array while it faithfully reproduces recordings.

Height Module Compatible

These speakers can be used for the front stage of any home theatre as well as side and/or rear surrounds. To add immersive vertical sound, Reserve R900 height modules are compatible (R900 sold separately).