Pair of TSi300 3-Way Tower Speakers with Two 5-1/4" Drivers TSi300 Features: Unlike other speakers in this price range TSi enclosures are constructed of extensively braced solid MDF with 3/4-inch baffles. This virtually eliminates internal resonances and damps energy-stealing vibrations for more efficient operation and more transparent sound. Beautiful pewter accents a high gloss piano-finish black top plate and your choice of stylish black or cherry wood-grain finishes make TSi speakers a part of your decor. Polks proprietary patented Dynamic Balance technology allows the engineers to design out distortion-causing driver and system resonances so you only hear the good sounds. Klippel motor optimization uses laser measurement technology to ensure a smooth excursion path at either end of the volume spectrum for uniform performance at both low and high volumes. TSi design combines smaller drivers (for more overall driver area with less driver mass) and narrow baffle geometry (taking up less than one square foot of floor space) for wider range and more spacious soundstaging so every seat in the house hears a prime performance. Unlike horns or metal domes silk dome tweeters deliver clear and detailed highs without fatigue even at high volume. Durable efficient and tuned with the Dynamic Balance process TSi Series polycarbonate cones produce smooth natural sound. Surprisingly deep musical bass response thanks to Polks critically tuned flared port venting system which minimizes port noise ("chuffing") and smooths the turbulence of port air flow to reveal big full-bodied bass that blends effortlessly with the speakers overall dynamics. All Polk loudspeakers are timbre-matched within their series designed with the same components throughout to achieve seamless speaker-to-speaker blending effects in multi-channel systems. The high efficiency design results in sound thats spacious and clear warm and realistic when combined with practically any electroni