High performance center channel speaker.
20" W x 6 7/8" H x 8 3/4" D
50.80cm W x 17.46cm H x 22.23cm D
The High Performance Heart of Home Theater
The CSiA4 is a high performance center channel speaker for smaller rooms and challenging placement situations. It features two 5 1/4-inch Dynamic Balance® drivers, one 1-inch Dynamic Balance dome tweeter for spot-on imaging, seamless soundstage and natural sounding voices. With the asymmetric cabinet design, you gain the flexibility to placing the CSiA4 above or below the TV and aim it at your position.
The CSiA4 Features:
The proprietary curved, 6-layer DAHLI enclosure design creates the optimal shear damping for a more rigid, acoustically inert enclosure and minimal cabinet resonances. CSiA4 cabinets are designed for clean, accurate sound.
Klippel motor optimization uses laser measurement technology to ensure a smooth excursion path at either end of the volume spectrum for uniform performance at both low and high volumes.
Polk’s proprietary, patented Dynamic Balance technology allows our engineers to design out distortion-causing driver and system resonances, so you only hear the good sounds.
Durable, computer-modeled, injection-molded butyl rubber surrounds suppress unwanted cone resonances for a lifetime of reliable sound.
The RTiA Cascade Tapered Crossover eliminates the comb filtering and beaming, common to multi-driver speakers, which degrades the quality of the audio and collapses the soundstage.
Patented Acoustic Resonance Control® (ARC) technology suppresses cabinet resonance that causes distortion to ensure clear and natural sound.
Beautiful curved furniture-grade hardwood veneer cabinet finishes, with sleek trim accents in black or cherry.
Computer-modeled anti-diffraction grilles enhance the good looks while minimizing sonic interference.
All Polk loudspeakers are timbre-matched within their series, designed with the same components throughout, to achieve seamless speaker-to-speaker blending effects in multi-channel systems.
Gold-plated, professional-style 5-way binding posts, for the most secure connection options.
All Polk products are made using the best materials and the most advanced manufacturing techniques. They pass the industry’s most exhaustive quality tests, including drop testing, extreme signal response and UV & salt exposure testing. Polk loudspeakers are built to perform for a lifetime.
|Type||Dynamic Balance silk polymer dome tweeters|
|Diameter||5 1/4" (13.34cm)|
|Type||Dynamic Balance drivers with polymer composite cones and rubber surrounds|
|Total Frequency Response||55Hz-27kHz|
|Upper -3dB Limit||26 kHz|
|Lower -3dB Limit||65 Hz|
|Nominal Impedance||8 ohms|
|Recommended Amplifier Power||20-180 watts per channel|
|Inputs||5-way binding posts|
|Height||6 7/8" (17.46cm)|
|Depth||8 3/4" (22.23cm)|
|Product Weight (each)||15.5 pounds|
|Unit of Measure||Each|
|Total Shipping Weight||20 pounds|
|Speaker Warranty||5 years parts and labor (original purchaser)|
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.
View all Professional Reviews
Sound Stage Xperience, April 2010
"...Whether placed atop or below my display, voices sounded clear and concise through the CSi A4, with lifelike presence. The off-axis sound, too, was excellent...a sound almost entirely free of coloration, clear and articulate and devoid of any dreaded boxiness..."
[ Open Review ]
"For multichannel listening, the CSi A4 center made a solid match to its mates. Tonality was well balanced with the RTi A3 pair..."
[ Open Review ]
Want to know more? Want to dig just a little deeper to learn about this product? Here's a list of source material that will give more detail, other perspectives, and answer questions you may have.
Frequently Asked Questions
- Why are my speakers distorting and popping?
- What wire should I get? What gauge?
- How do I choose between all the different home audio speakers?
- What center speaker matches with my older Polk speakers?
- How long is the warranty on Polk loudspeakers?
- How do I obtain service for my loudspeakers?
- Why did my speakers break?
- What type of speaker wire should I use?
- Choosing Home Audio Speakers
- Speaker Types
- Home Audio Speaker Placement
- Optimizing the Sound of Your Room
- Surround Processor/Receiver Set-Up
- How Do I Prevent Damaging My Speakers Again?