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


Mirror imaged full size floorstanding system.

Available Finishes:

There are no downloads available. If you need assistance, please contact us.

Go outside the box with the RTA12C

RTA 12C Line Source Loudspeaker System:

Polk Audio's never satisfied engineers wanted to eliminate the problems associated with unwanted reflections caused by placing the high frequency tweeter on the front surface of a cabinet. The sound patterns, produced by the tweeter, radiate along the surface of the cabinet and the resultant reflections cause imaging distortions. They rob the listener of the ability to accurately hear all of the potential benefits of stereophonic reproduction. With the aid of Polk Audio's newly developed digital sampling fast Fourier transform computer testing procedure they were able to place the tweeter on the top of the speaker's cabinet, completely eliminating the problems associated with troublesome diffractions.

•Open air mounted, phase aligned high frequency radiator.

•Tri-laminate polymer drivers.

•SL2000 moving coil dome radiator.

•SW120 fluid coupled planar subwoofer.

•Complex dual isophase crossover network.

•Anti-diffraction "ramp" is used to eliminate any spurious high frequency reflections from the top of the cabinet.

The sonic result is a cleaner, clearer, more lifelike sound with greater power handling and dynamic range capability than ever before.

Driver Complement

Diameter1" (2.54cm) 
Typemoving coil dome radiator 
Diameter6 1/2" (16.51cm) 
Typetri-laminate polymer 
Diameter12" (30.48cm) 
Typefluid-coupled planar 


Maximum SPL120 dB
Total Frequency Response17Hz - 25kHz 
Upper -3dB Limit21.5 kHz
Lower -3dB Limit25 Hz
Nominal Impedance4 ohms
Recommended Amplifier Power10-500 watts per channel

Amplifier Specs

220V AvailabilityNo 


Cabinet Dimensions
Height39" (99.06cm) 
Width16" (40.64cm) 
Depth11 7/8" (30.16cm) 
Product Weight (each)75 pounds


Unit of Measureeach 


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.

RTA12C Media

RTA12C Literature

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.

RTA12C Accessories