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The Polk Audio CSi A4 speakers are high performance center channel speakers.

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 The Polk Audio CSi A4 speakers are high performance center channel speakers. They are designed with Dynamic Balance polymer composite drivers that help reduce distortion and smooth wide range sound. A 1-inch silk/polymer dome tweeter is included to increase the detail of the sound. Magnetic shielding makes the speakers versitile by allowing it to be placed around computer equipment without risk of disruption. For cooling the CSi A4 speakers have low viscosity ferror-fluid cooling and a heatsink on the back of its neodymium magnet. Gold-plated 5-way binding post inputs are used to create secure connections and butyl rubber is used for the surrounds to increase the durability of the product. The external design of the product comes with either a black or cherry wood finish.

Features
  • Overall Frequency Response: 55Hz-27kHz
  • Lower -3dB Limit: 65 Hz
  • Upper -3dB Limit: 26 kHz
  • Nominal Impedance: 8 ohms
  • Recommended Amplifier Power: 20-180 watts per channel
  • Efficiency: 89 dB
  • Inputs: 5-way binding posts
  • Cabinet Size: 6-7/8" H x 20" W x 8-3/4" D
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