Center Channel

This product is a vintage Polk model and is not available for sale, but it may still be available in some stores as a closeout or used product. The following text is taken from the original sales brochure for this product and does not reflect current availability. If you happen to have any question or concerns about this product, or any other Polk Audio product, feel free to contact our Customer Service Department at 1-800-377-7655 Monday - Friday, 9am - 5:30pm EST


Two-way center channel loudspeaker

Available Finishes:
Additional Images

Center Speakers That Give Everyone A Front Row Seat

CSi20 features:

  • Poly-composite Dynamic Balance driver with butyl rubber surrounds for durability and smooth wide range response.
  • 3/4 inch (19mm) silk/polymer composite dome tweeter for clear, detailed highs.
  • The same components as the Polk Audio R Series; they're timbre-matched for a more realistic, more seamless surround environment.
  • Magnetic shielding for safe placement directly on or near video components.
  • Five-way binding post inputs for the most secure connections and the most versatile wiring applications.

Driver Complement

Diameter3/4" (1.91cm) 
TypeDynamic Balance silk/polymer composite dome, shielded 
Mid / Woofer
Diameter5 1/4" (13.34cm) 
TypeDynamic Balance polymer composite cone with rubber surround, shielded 


Total Frequency Response60Hz - 22kHz 
Upper -3dB Limit18 kHz
Lower -3dB Limit80 Hz
Nominal Impedance8 ohms
Efficiency89 dB
Recommended Amplifier Power10 - 80 watts per channel

Amplifier Specs

Amplifier Type


Cabinet Dimensions
Height7" (17.78cm) 
Width15" (38.10cm) 
Depth7 3/8" (18.73cm) 


Unit of MeasureEach 
Total Shipping Weight13.00 pounds


Speaker Warranty5 years parts and labor, limited 

Specifications, dimensions and features subject to change without notice. For more information call us at 1-800-377-7655 (USA and Canada). Outside of North America call +1 (410) 358-3600.

CSi20 Media

CSi20 Literature

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CSi20 Accessories