Value-packed 2-way tower with Front Bass Port.

7 3/4" W x 33 3/4" H x 9" D
19.68cm W x 85.72cm H x 22.86cm D



Available Finishes:
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Big Value, Big Sound, Stylish Look

The stylish M20 is the perfect value-minded introduction to dynamic full range floorstanding speaker sound. The silk dome tweeter & polymer composite driver components, in a wide-dispersion array, reveal lifelike sound: open, accessible, out-of-the-box sound, where every seat is in the “sweet spot.” A tuned front-firing bass port smooths blending, for serious low end with absolutely no performance-robbing resonances.

M20 Features:

Most other speakers in this price range are made of particle board. It’s flimsy, unstable, and doesn’t reproduce quality sound. R/T/M Series models are all constructed of extensively braced, heavy duty MDF. Quality construction eliminates internal resonances and energy-stealing vibrations, for more efficient operation. The slim tower design conserves floor space, occupying less than one square foot.

Dynamic Balance® is our patented advanced analysis of a speaker’s entire electro-acoustic and mechanical system. It helps us select better materials and more efficient geometry. With deep analysis, we can pinpoint and eliminate things that reduce performance before they become a part of the finished product. The silk and polymer composite driver materials in the speakers of the R/T/M Series are specially tuned to produce a flat, uncolored frequency response. This true transparency reveals a wide dynamic range, with sharp details, and no hint of strain.

Silk dome tweeters deliver clear and detailed highs, without fatigue, even at high volume. Compact, powerful neodymium magnet structures are the same components used in high end loudspeakers.

Durable, efficient, and tuned with our Dynamic Balance process, our polymer composite cone material produces smooth, natural sound.

Acoustically-inert stamped driver baskets are strong and vibration-free. 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" design, and acoustically inert speaker grille, never gets in the way of your sound.

Speakers in the R/T/M Series speakers are designed to be driven well by even the most modestly-powered amplifer or receiver. So you don’t have to be a techie, a power hog, or an audio pro to achieve great sound that’s spacious and clear, warm and realistic.

The speakers in the R/T/M Series are timbre-matched to other Polk loudspeakers, so you can mix-and-match them to build or add to existing systems, and always experience seamless, realistic blending between speakers.

Metal 5-way professional binding post connectors give you maximum signal transfer and the most secure connections.

All models of the R/T/M Series are engineered to be safe when placed near sensitive AV equipment like monitors or TVs.

Floorstanding R/T/M Series models feature interchangable non-skid leveling feet or carpet spikes, for stability on any type of floor. More stability equals more efficiency, less energy wasted, and better performance.

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, shielded 
Mid / Woofer
Diameter6 1/2" (16.51cm) 
TypeDynamic Balance polymer composite cone, shielded 


Total Frequency Response45Hz - 24kHz 
Upper -3dB Limit20 kHz
Lower -3dB Limit55 Hz
Nominal Impedance8 ohms
Efficiency89 dB
Recommended Amplifier Power20 - 150 watts per channel
Inputs5-way binding posts 

Amplifier Specs

220V AvailabilityNo 


Cabinet Dimensions
Height33 3/4" (85.72cm) 
Width7 3/4" (19.68cm) 
Depth9" (22.86cm) 


Unit of Measureeach 
Total Shipping Weight32.00 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.

M20 Media

M20 Accessories