Our review samples came with pre-installed feet that extend beyond the cabinet to stabilise the speakers on any surface and also made it easier to lug their 24kg bulk around. The relatively slender cabinets that hold a trio of 6.5in mid/bass drivers and a 1in terylene tweeter measure 8.5in across, making it convenient to place around in the room. Even more so than normal, thanks to the patented Polk Audio Powerport system that uses a downward firing port and an inverted funnel-shaped contraption, it smoothes out the airflow, dramatically reducing distortion and port noise.
On the HF side, handling duties is a Terylene tweeter which is “Hi-Res” certified, meaning that it has a frequency response of up to 40kHz. The prying audiophiles will probably realise that even though humans can barely hear beyond 18kHz, the upper-order harmonics reach far outside this hearing range and have an effect on the audible frequency range too. This is true especially for Hi-Res digital sources that have sampling rates beyond 192kHz and depending on the kind of filters used by your DAC to process all that information, you may appreciate your new speakers that can play as high. Coming back to the material itself, the unusual choice of Terylene isn’t explained by Polk anywhere but it’s safe to assume that it meets all the criteria required for an HF driver - light, stiff and durable. Strangely though, Polk Audio has been brave enough to keep the soft dome completely exposed, without any sort of grille or protection whatsoever. There is a magnetic grille that of course covers the entire front baffle and is said to be designed for minimum diffraction. For the sake of this review though, we used it unattired.