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


Two-way floorstanding loudspeaker

Available Finishes:

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The RT400 shares many technologies and features with Polk's state-of-the-art SRT System making it an affordable choice for either music listening or part of a home theater system. It contains:

Dynamic Balance midrange drivers and tweeters that produce wide, smooth response and low distortion.

Narrow cabinet front works to reduce unwanted cabinet diffraction which narrows the high frequency dispersion and reduces the ability to pin point images.

Polk's famous attention to detal doesn't stop with the tweeter, driver and cabinet. The internal crossover circuit is carefully designed to create a smooth transistion from the sounds produced by the tweeter and the midrange driver. This gives the listener an accurate, believable presentation of whatever sounds are given to it.

Driver Complement

Diameter1" (2.54cm) 
Mid / Woofer
Diameter7 1/2" (19.05cm) 


Total Frequency Response40Hz-22kHz 
Upper -3dB Limit20 kHz
Lower -3dB Limit50 Hz
Nominal Impedance8 ohms
Efficiency89 dB
Recommended Amplifier Power20 - 150 watts per channel

Amplifier Specs

220V AvailabilityNo 
Amplifier TypeNone 


Cabinet Dimensions
Height36 1/2" (92.71cm) 
Width9 33/100" (23.70cm) 
Depth10 1/4" (26.04cm) 


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.

RT400 Media

RT400 Literature

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RT400 Accessories