Polk 12in. 3.4ohm(4 ohm). 300-watt RMS 460 watts peak. 1,380 watts total all 3 speakers. 12inch long-throw woofers. All 3 for $120 The woofer's Hi-Roll foam surround gives the cone more flexibility for back-and-forth movement. These beasts send out a lot of sound!.Polk perfected the method of analyzing a speaker's microscopic behavior with laser Interferometry. With that information in hand, Polk engineers select the ideal combination of materials, geometry and construction techniques to literally “tune out” unwanted resonance. The result is a subwoofer that delivers pure, distortion free with deep bass. Using a state-of-the-art Klippel Distortion Analyzer, Polk engineers optimized the woofer's motor structure, voice coil alignment and suspension for longer excursion and greater linearity bringing you the best possible performance even at the most extreme listening levels.