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


Surround effects loudspeaker, with switchable Bipole/Dipole operation.

Available Finishes:

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The Simple Choice For Surround Performance

For your small to mid-sized home theater, the new F/X300i is the right choice. It's small size and big performance raises the bar for value and utility in bi-directional surround speakers.

The F/X300i features:

  • Dynamic Balance® composite driver for wide response and low distortion
  • Twin timbre matched silk dome tweeters on opposing baffles for spacious and enveloping surround effects
  • Switchable Dipole/Bipole operation for the greatest placement flexibility
  • Built-in wall bracket for easy wall mounting
  • Timbre matched to other Polk speakers for seamless, lifelike imaging
  • Bass response to below 80Hz assures optimum performance in discrete channel Dolby Digital (AC-3) surround systems
  • Available in Black or White finish
  • 5-way binding post inputs for the most convenient and secure wire connections

Surround speakers go behind you, or to the rear left and right sides of your home theater room (depending on your seating location and room layout). They envelop you in sound, especially in today's discrete multi-channel digital world. Good surround effects add to the realism of your home theater experience, and put you and your family right in the center of the action!

What is "Dipole/Bipole"?

The more "diffuse" the surround sound field, the less the listener is able to pinpoint the action, resulting in a more realistic, enveloping surround sound experience, especially when it's necessary to mount the speakers close to the listening area. For the ultimate in rear surround, choose speakers with a choice of sound field patterns, both BiPole and DiPole. Polk's new F/X300i, F/X500i and F/X1000 let you choose BiPole or DiPole at the flick of a switch depending on the speaker's placement. Place them where they look best in your home theater, and then select the pattern that provides optimum sound for you.

Driver Complement

Diameter3/4" (1.91cm) 
TypeDynamic Balance® Silk dome tweeter 
Mid / Woofer
Diameter5 1/4" (13.34cm) 
TypeDynamic Balance® driver, shielded 


Total Frequency Response50Hz - 22kHz 
Upper -3dB Limit20 kHz
Lower -3dB Limit55 Hz
Nominal Impedance8 ohms
Efficiency89 dB
Radiation PatternSwitchable bi-pole or di-pole operation 
Recommended Amplifier Power10 - 100 watts per channel
Inputs5-way binding posts 

Amplifier Specs

Amplifier Type


Cabinet Dimensions
Height12" (30.48cm) 
Width9" (22.86cm) 
Depth8 1/2" (21.59cm) 
Mounting Optionswall mount, shelf or stand 


Unit of Measurepair 
Total Shipping Weight25.00 pounds


Speaker WarrantyLimited, 5 years parts and labor 

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.

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