Definitive Technology Dymension DM60 Bipolar floor-standing speaker with built-in 8" powered subwoofer

Product highlights: tower speaker with built-in 8" powered subwoofer cloth grille-wrapped enclosure adjustable speaker feet include spikes and pads for a range of flooring surfaces Bipolar driver array: fully balanced design — two identical sets of drivers for the front and rear: 1" aluminum oxide dome tweeter with Teteron (cloth) suspension for smooth, extended highs dual 4-1/2" BDSS mid/bass drivers back-panel switch lets you set rear-firing drivers for "balanced" or "forward-focused" sound profile Balanced Dual Surround System (BDSS) driver technology places rubber surrounds on both the outer and inner edges of each speaker cone for improved control and clarity Linear Response Waveguide reduces the woofer's back wave for smoother midrange response Built-in powered subwoofer: one 8" active woofer two 8" passive radiators increases the sound-radiating surface area for enhanced bass output patented Intelligent Bass Control provides precise bass level adjustments while maintaining accurate midrange tonal balance 180-watt built-in Class D amplifier for the built-in sub Specs: frequency response: 34-23,000 Hz (-3dB) recommended amplifier power: 50-300 watts sensitivity: 88 dB impedance: 4 ohms Other info: 5-way binding post connectors dimensions (measured by Crutchfield): 11-5/16"W x 45-7/16"H x 15-1/16"D 60 lbs. warranty: 5 years speakers, 3 years electronics MFR # 300568-01-00-101