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Polk Audio - LSiM704c
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Center-channel Loudspeaker, 40Hz to 40kHz Frequency Response

Series: LSiM

Model: LSiM704c

  • Enhanced, re-engineered ring radiator tweeters extend top-end response for incredible details and realistic imaging
  • Extended linear motion voice coil design allows lots of movement in limited space, eliminating impedance
  • Lightweight, rigid cast aluminum baskets are designed for precision motor alignment with unobstructed linear movement
  • Klippel motor optimization uses laser measurement technology to ensure smooth excursion path at either end of volume spectrum
  • Polk’s proprietary, patented Dynamic Balance technology allows engineers to design out distortion-causing driver and system resonances
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LSiM704c has all the earmarks of a great center, crystalline detail, fast natural midrange and impactful bass. With its dynamic sonic engine, twin 5.25-inch woofers and a dual PowerPort venting system, the LSiM704c will reveal the whisper, the shout and the thump-thump of the helicopter flying over. Polk’s exclusive dynamic sonic engine design optimizes the midrange driver and the ring radiator tweeter in separate interior chambers for improved transient response, superior imaging and greater horizontal off-axis response. Enhanced, reengineered ring radiator tweeters extend top-end response for incredible details and realistic imaging. Extended linear motion voice coil design allows lots of movement in a limited space, eliminating impedance and extending mid- and high-frequency response. Lightweight, rigid cast aluminum baskets are designed for precision motor alignment with unobstructed linear movement and ample venting. Klippel motor optimization uses laser measurement technology to ensure smooth excursion path at either end of volume spectrum. Polk’s proprietary, patented Dynamic Balance technology allows our engineers to design out distortion-causing driver and system resonances, so hear good sounds. Super cell aerated polypropylene cone is the ideal balance of lightweight stiffness and superior damping properties. Durable, computer-modeled, injection-molded butyl rubber surrounds suppress unwanted cone resonances for a lifetime of reliable sound. High quality, heavy duty LSiM enclosure construction features 1.0-inch MDF on the sides, 0.75-inch MDF on the back and bottom and 1.25-inch baffles. Beautiful furniture-grade hardwood veneer cabinet finishes, with sleek trim accents and no visible screws. Super-thin zero-diffraction grilles lock in place magnetically, and never obscure your sound. PowerPort bass venting is Polk’s patented design for smoothly transitioning the air flow from port into your listening area. Loudspeakers are timbre-matched within their series, designed with same components throughout, to achieve seamless speaker-to-speaker blending effects in multi-channel systems. Dual gold-plated, professional-style 5-way binding posts, for the most secure connection options. Dual binding posts allow bi-amp/bi-wire connections, for the ultimate in customized high performance audio.
  • Enhanced, re-engineered ring radiator tweeters extend top-end response for incredible details and realistic imaging
  • Extended linear motion voice coil design allows lots of movement in limited space, eliminating impedance
  • Lightweight, rigid cast aluminum baskets are designed for precision motor alignment with unobstructed linear movement
  • Klippel motor optimization uses laser measurement technology to ensure smooth excursion path at either end of volume spectrum
  • Polk’s proprietary, patented Dynamic Balance technology allows engineers to design out distortion-causing driver and system resonances
  • Super cell aerated polypropylene cone is ideal balance of lightweight stiffness and superior damping properties
  • Durable, computer-modeled, injection-molded butyl rubber surrounds suppress unwanted cone resonances for lifetime of reliable sound
  • Beautiful furniture-grade hardwood veneer cabinet finishes, with sleek trim accents and no visible screws
  • Super-thin zero-diffraction grilles lock in place magnetically, and never obscure your sound
  • PowerPort bass venting is Polk’s patented design for smoothly transitioning the air flow from port into your listening area
  • Dual gold-plated, professional-style 5-way binding posts, for most secure connection options
  • Dual binding posts allow bi-amp/bi-wire connections, for ultimate in customized high performance audio
 
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