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


High Performance Bi-directional
Surround Speaker

Available Finishes:

The Simple Choice
For Surround Performance

The popularity of home theater has thrust the bi-directional surround sound speaker into the spotlight. To get the most from DVD and multi-channel music formats you need a versatile high performance surround speaker. And the Oscar for best performance goes to the FXi50, for its role as the switchable, bi-directional surround FX speaker that gives you the kind of performance and placement flexibility that your high performance home theater demands. The FXi50 surrounds you with action and effects.

The FXi50 features:

  • Reformulated poly-composite Dynamic Balance drivers with butyl rubber surrounds for durability and smooth wide range response.
  • Dual opposing 1" silk composite "Mueller" German engineered dome tweeters for clear, detailed highs.
  • Timbre-matched components to fit into any Polk Audio RTi Series home theater or multi-channel music system; for a more realistic, more seamless surround environment.
  • Design-enhanced diffusion characteristics: triangular cabinets aim drivers and tweeters in opposing directions to produce a more realistically diffuse wavefront and wide, lifelike imaging of surround-sound FX.
  • Conveniently located bipole/dipole switch for the most flexible placement options and highest performance surround effects.
  • Strong built-in wall mounting brackets for easy installation.
  • Gold-plated 5-way binding post inputs for the most secure connections and the most versatile wiring applications.

Driver Complement

Diameter1" (2.54cm) 
TypeDynamic Balance® silk/polymer composite domes, shielded 
Mid / Woofer
Diameter6 1/2" (16.51cm) 
TypeDynamic Balance® driver, shielded 


Total Frequency Response40Hz-27kHz 
Upper -3dB Limit26 kHz
Lower -3dB Limit50 Hz
Nominal Impedance8 ohms
Radiation PatternSwitchable Bipole/Dipole 
Recommended Amplifier Power10-150 watts per channel
Inputs5-way binding posts 

Amplifier Specs

Amplifier Type


Cabinet Dimensions
Height14 7/8" (37.78cm) 
Width10 1/8" (25.72cm) 
Depth8 7/8" (22.54cm) 
Mounting OptionsBuilt-in keyhole slot wall-mount brackets supplied 
Product Weight (each)15.00 pounds


Unit of Measureeach 
Total Shipping Weight31.00 pounds


Speaker Warranty5 years parts and labor, limited 

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.

F/Xi50 Media

F/Xi50 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.

F/Xi50 Accessories