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Experience rich, clear, full-range sound with the Polk Signature S20E Bookshelf Speakers. Hi-Res certified and designed for movies, TV, and music, these speakers deliver immersive audio with advanced acoustic technology and stylish American modern design. Key Features Dynamic Balance designed acoustic array for rich, clean sound 1” high-resolution Terylene tweeter for crystal-clear highs and accurate high-resolution audio reproduction 6.5” low distortion mica-reinforced polypropylene cones for clear bass and dynamic mid-range Exclusive Polk Power Port technology for deeper, more impactful bass Hi-Res Audio certified, capable of delivering frequencies up to 40 kHz Anti-diffraction magnetic grille minimises sonic interference Gold-plated 5-way binding posts for efficient, lossless connections Acoustically inert MDF cabinet with extra bracing reduces unwanted resonance Timbre-matched design for seamless multi-channel system blending Compatible with Dolby and DTS surround sound technologies Limited 5-year warranty, designed in California and engineered in Baltimore Specifications Dimensions (H x W x D): 37.59 cm x 21.59 cm x 35.05 cm Weight: 7.71 kg Driver Enclosure Type: PowerPort bass vented Drivers: 1 x 6.5" (16.51 cm) mica-reinforced polypropylene cone midrange 1 x 1" (2.54 cm) high-resolution Terylene tweeter Audio Inputs: Pair of gold-plated 5-way binding posts Total Frequency Response: 39 Hz – 40 kHz Nominal Impedance: Compatible with 8 ohm outputs Maximum Sensitivity (1 watt @ 1 metre): 88 dB Recommended Amplifier Power Per Channel: 20 W – 125 W What's in the Box Pair of Polk Signature S20E Bookshelf Speakers Product Overview The Polk Signature S20E Bookshelf Speakers bring a big home theatre and music experience into your living room with advanced Dynamic Balance acoustic technology. This patented design optimises material selection and geometry to eliminate performance issues before production, delivering rich, full-range sound. The high-resolution Terylene dome tweeter features curvilinear formers and a ceramic motor structure that extends frequency response and reduces resonance for clear, detailed highs. Certified to reproduce frequencies up to 40 kHz, it supports the latest high-resolution audio files for an immersive listening experience. Custom mid-range drivers use mica-reinforced polypropylene cones with butyl rubber surrounds and ceramic motor structures to provide clean bass, better linearity, and durability. Polk’s exclusive Power Port technology reduces turbulence and distortion for deeper, more musical bass with 3 dB more output than traditional ports. Designed for high sensitivity and wide compatibility, these speakers work well with modest amplifiers or receivers and support Dolby and DTS surround sound formats. The two-way crossover array ensures a seamless soundstage, while the anti-diffraction magnetic grille minimises sonic interference. The strong, acoustically inert MDF cabinet with extra bracing reduces internal standing waves for less coloration. The American modern styling with curved edges and black washed walnut finish complements any home décor. Timbre-matched components guarantee seamless blending in multi-channel setups. Built to last with strict quality controls, the Polk Signature S20E comes with a limited 5-year warranty for peace of mind.