Polk TSx440T High Performance Floorstanding Loudspeaker Three high performance bi-laminate drivers tuned with our Dynamic Balance technology reveal the length and breadth of your favorite music or movie audio. A superior state-of-the-art silk/polymer dome tweeter keeps highs detailed and clear, with no listening fatigue, even at lifelike volume levels. Combined in a non-resonant enclosure (that looks like a million bucks) with a critically tuned flared bass venting port system, for astonishingly well-blended deep bass effects, and you have a floor standing loudspeaker that pairs audiophile performance and good looks. A Polk classic. Bi-laminate composite cones, tuned with our Dynamic Balance process, produce smooth, natural sound. Silk/polymer dome tweeters deliver clear and detailed highs, without fatigue, even at high volumes. The high efficiency design of the TSx Series works well with practically any electronics. TSx loudspeakers are timbre-matched within their series for seamless speaker-to-speaker blending. A 3-inch critically tuned port minimizes port noise and smooths port air flow for full-bodied bass. Curved enclosure in non-resonant MDF for an acoustically inert cabinet reduces audible coloration. Technical Specifications 1 - 1” (2.54 cm) silk/polymer Dynamic Balance dome tweeter3 - 6 1/2” (16.51cm) Dynamic Balance bi-laminate cone mid-wooferTotal Frequency Response - 33Hz-25kHzUpper -3dB limit - 24 kHzLower -3dB limit - 43 HzNominal Impedance - 8 OhmsEfficiency - 91 dBRecommended Amplifier Power - 20-200 Watts per channelGold-plated 5-way binding postsDimensions - 40” (101.60cm) H X 8” (20.32cm) W X 14” (35.56cm) D