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Polk Audio > 
Item#: 9SIA1J70ZW2270

Polk Audio CSI A4-Black High Performance Center Speaker Single

  • 55Hz-27kHz
  • 8 ohms 20-180 w/channel
  • 89 dB
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When you’re building the ultimate home theater, you need to premium sound from every channel. Polk Audio presents the CSi A4 Cherry Finish Center Speaker.

This high-performance center channel is a midsize speaker that will fit in most places so you won’t have to compromise on surround sound. This center speaker is designed with an angled top, allowing you to place the speaker upside down to aim at the listening area. You’ll love what you hear.

As an added bonus, this speaker is crafted with a real wood finish and features a Damped Asymmetric Hex Laminate Isolation cabinet. This unique design results in clean, accurate sound. You’ll also appreciate the premium connections that consist of high-quality, gold-plated 5-way binding posts to ensure snug connections. Build your next home theater with Polk Audio speakers today!

  • newegg Horizontal Center-channel Speaker The horizontal center-channel speaker visually complements your flat-panel TV while delivering natural-sounding dialogue and vocals.
  • newegg Exceptional Sound Quality The Polk Audio CSI A4 boasts dual 5.25" polymer composite dynamic balance drivers and a 1" dynamic balance silk/polymer composite dome tweeter to deliver crisp highs and accurate lows for an immersive listening experience.
  • newegg Magnetically Shielded The magnetically-shielded Polk Audio CSI A4 can be put at any proximity to display devices such as TVs and LCD monitors without loss of sound quality caused by interference.

Learn more about the Polk Audio CSI A4-Black


Polk Audio
CSI A4-Black


Center Channel Speaker
Sold As
Driver Units
Midrange: 2 - 5.25" Diameter, Polymer Composite Dynamic Balance with rubber surround

Tweeter: 1 - 1" Diameter, Silk Polymer Dome Tweeter
Power Rating
20-180 w/channel
Frequency Response
Nominal Impedance
8 ohms
89 dB
Inputs: 5-way binding posts




Dimensions & Weight
6.88" x 20" x 8.75"


Enclosure Type: Vented with dual PowerPort & single Arc Port

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Home > 
Electronics > 
Home Audio & Home Theater > 
Home Audio Speakers > 
Polk Audio > 
Item#: 9SIA1J70ZW2270
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