Polk Audio RM85

The RM85 is the mid-line set of home audio speaker bundles in Polk Audio's RM series. This series is designed to give the sound you'd expect from a set of big speakers, but in compact sized speakers. This bundle consists of 5 speakers to be used as a 5.1 surround sound system, without a subwoofer.  The RM85 uses Polk Audio's 6-1/8" tall RM7 satellite speakers as fronts (or surrounds if you choose), which feature one 2-1/2" composite cone midrange and one 1/2" diameter tweeter.  For the surrounds (or fronts), it uses the 7-1/2" tall RM8's, which feature two 2-1/2" diameter composite cone midranges, and one 3/4" diameter tweeter.  The 9-7/16" wide RM8-C center speaker completes the package, which features two 2-1/2" composite cones and one 3/4" diameter tweeter.  The front and surround speakers can be mounted on a flat surface or to a wall with the included hardware, or can be placed on the optional floor stands.  These speakers also feature a trapezoidal cabinet shape, which not only adds to it's unique compact look, but also reduces inner speaker standing waves and adds strength.  The RM8 satellite places the two midranges on adjacent sides of the trapezoid which gives these speakers a wide sound field.  This system can easily be expanded to 6.1 or 7.1 surround with the addition of extra satellite speakers and for more bass power, it is suggested to add a subwoofer.