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

RM8 Center

Compact center channel speaker for RM Series.

3 13/16" H x 9 7/16" W x 3 3/4" D
9.68cm H x 23.97cm W x 9.53cm D

Available Finishes:
Additional Images

The Central Element in Your High Performance Compact Home Theater System

The RM8 center channel is a sleek, minimalist design that delivers impressively big sound. Heavy-duty, non-resonant composite enclosures feature an elegant, high-gloss finish that looks great, while high performance RM Series components give this hardworking center channel speaker the means to anchor the action and clear dialogue to your screen. Purchase separate single RM8 centers to add to a “rear center” to your system and create extended multi-channel sound systems.

The RM8 Center Speaker Features:

The unique Reuleaux triangular polygon shape is acoustically ideal, minimizing resonances and standing waves inside the speaker to eliminate the “boominess” that makes other small speakers sound “muddy,” delivering superior midrange performance and lifelike imaging.

Special anti-diffraction baffle design produces sophisticated accoustic sculpting, with the largest possible dispersion pattern and virtually no edge diffraction or distortion.

Composite driver technology works in tandem with the enclosure shape (and Polk’s patented Dynamic Balance® tuning process) to produce excellent flat frequency response, with sharp detail, transparent imaging and the ability to play loud without any strain, something you won’t find in other small speaker systems.

The silk/polymer dome tweeter delivers superior imaging and smooth highs.

RM Series speakers weigh just 3lbs, so you can put them virtually anywhere; on stands, on shelves, on walls. RM7 & RM8 speakers come with secure wall mount brackets. The RM8 also comes with a surface mount “tripod” base.

RM7 center & RM8 center speakers are magnetically shielded for safe placement near your monitor or TV, and come with custom-designed surface mount cradles for easy placement on any flat surface.

This RM Series is mix-and-match compatible, so you can buy them in sets or in pairs and build the compact sound system of your dreams, 5.1, 6.1, 7.1 and beyond.

All RM Series speakers are professionally timbre-matched to sound perfect together in any speaker configuration.

All Polk Audio 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 Audio loudspeakers are built to perform for a lifetime.

Driver Complement

Diameter3/4" (1.91cm) 
TypeSilk/polymer dome 
Diameter2 1/2" (6.35cm) 
TypeDynamic Balance composite cone driver 


Total Frequency Response95Hz-24kHz 
Upper -3dB Limit20 kHz
Lower -3dB Limit130 Hz
Nominal Impedance8 ohms
Efficiency89 dB
Recommended Amplifier Power20-125 watts per channel

Amplifier Specs

220V AvailabilityNo 


Cabinet Dimensions
Height3 13/16" (9.68cm) 
Width9 7/16" (23.97cm) 
Depth3 3/4" (9.53cm) 
Product Weight (each)3.70 pounds


Unit of Measureeach 
Included AccessoriesWall mount bracket, cradle 


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.

RM8 Center Media

RM8 Center Literature

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RM8 Center Accessories