Center Channel


Center Channel Loudspeaker

19" W x 6 1/2" H x 8 3/8" D x
48.26cm W x 16.51cm H x 21.27cm D x



Available Finishes:
Additional Images

Center Speakers that Give Everyone a Front Row Seat

Your center channel speaker is more than just a dialogue speaker: it must carry over 50% of the information in multi-channel movie and music formats. The CSM is engineered to be an affordable high performance center channel speaker, anchoring the action or instruments to your screen with performance that matches that of M Series main/front speakers.

The CSM features:

Unlike other speakers in this price range, R/T/M Series enclosures are constructed of solid, extensively braced MDF. This virtually eliminates internal resonances and damps energy-stealing vibrations, for more efficient operation and more transparent sound.

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.

Unlike horns or metal domes, silk dome tweeters deliver clear and detailed highs, without fatigue, even at high volume.

Durable, efficient, and tuned with our Dynamic Balance process, polymer composite cones produce smooth, natural sound.

Acoustically-inert stamped driver baskets are strong and vibration-free, and durable butyl rubber surrounds deliver a lifetime of high performance.

R/T/M Series models all feature professionally designed, speaker-specific bass porting, for highly efficient deep bass response that adds thrilling realism to your sound.

An "open architecture" anti-diffraction grille design, and acoustically inert speaker grille, will never get in the way of your sound.

Our high efficiency design results in sound that’s spacious and clear, warm and realistic, when combined with practically any electronics, even the most modestly-powered amplifer or receiver.

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.

Driver Complement

Diameter3/4" (1.91cm) 
TypeDynamic Balance Silk/polymer composite dome, magnetically shielded 
Mid / Woofer
Diameter5 1/4" (13.34cm) 
TypeDynamic Balance Polymer composite cone, shielded 


Total Frequency Response55Hz - 22kHz 
Upper -3dB Limit20 kHz
Lower -3dB Limit60 Hz
Nominal Impedance4 ohms
Efficiency90 dB
Recommended Amplifier Power10-100 watts per channel

Amplifier Specs

Amplifier Type


Cabinet Dimensions
Height6 1/2" (16.51cm) 
Width19" (48.26cm) 
Depth8 3/8" (21.27cm) 


Unit of Measureeach 
Total Shipping Weight18.50 pounds


Speaker Warranty5 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.

CSM Media

CSM Accessories