Polk Audio LSiM702F/X Surround Speakers

A sectional design is used in this model from the updated LSiM series - medium- and high-frequency drivers are enclosed in their own closed volume, and the remaining space of the case is allocated to a 165-mm woofer, manufactured using Dynamic Balance technology, with a cone made of expanded polypropylene. The driver is loaded on the proprietary PowerPort bass reflex, thereby allowing the bass register to be significantly expanded (the lower limit is 45 Hz. The quality of tweeters was a welcome surprise - these are high-end drivers with ring membranes. In addition to extremely high detailing, such constructions have several advantages in comparison with traditional dome structures. In particular, they have a broader polar pattern, which is a big plus for home cinema systems. The attention of Polk Audio engineers to the nuances is literally amazing - they even developed an acoustically transparent magnetic grill that completely eliminates parasitic diffraction.

Polk Audio LSiM702F/X impresses by literally every aspect of playback. The first thing, where these systems stand out against the background of competitors, is simply the killing dynamics. Also it is necessary to mention the solid low-frequency capabilities of the systems, which are quite comparable with small floor loudspeakers. There were no special claims to the mid-frequency band: everything is good with tonal reliability, as well as with sound resolution. The top seemed to be somewhat unusual. At a sufficiently high resolution the tweeters seem to steal the air components. However, this does not affect the quality of virtual space at all.