SKU 1122
Timbre-Matched Bipole/Dipole Surround Loudspeaker

Full Fidelity and High Performance

The F/XiA4's engine is the dual Dynamic Balance® 1-inch dome tweeter design and a 5 1/4-inch Dynamic Balance driver that produces believable real-life effects at prodigious volumes. The selectable bipole/dipole function allows you to configure it to your space and 7.1 systems. The smaller cabinet enables it to fit in more places.

F/XiA4 Features:


  • The trapezoidal shaped cabinets aim the drivers and tweeters in opposing directions to produce a more realistically diffuse wavefront and wide, lifelike imaging of surround sound. Keyhole slots make mounting a snap.

  • With the flip of a switch, our dipole/bipole circuitry changes the soundfield from direct to indirect radiation patterns enabling you to place the surround speaker beside or behind you depending on your listening room setup.

  • Klippel motor optimization uses laser measurement technology to ensure a smooth excursion path at either end of the volume spectrum for uniform performance at both low and high volumes.

  • Polk's proprietary, patented Dynamic Balance technology allows our engineers to design out distortion-causing driver and system resonances, so you only hear the good sounds.

  • Durable, computer-modeled, injection-molded butyl rubber surrounds suppress unwanted cone resonances for a lifetime of reliable sound.

  • The F/XiA Cascade Tapered Crossover eliminates the comb filtering and beaming, common to multi-driver speakers, which degrades the quality of the audio and collapses the soundstage.

  • Patented Acoustic Resonance Control® (ARC) technology suppresses cabinet resonance that causes distortion to ensure clear and natural sound.

  • Computer-modeled anti-diffraction grilles enhance the good looks while minimizing sonic interference.

  • All Polk loudspeakers are timbre-matched within their series, designed with the same components throughout, to achieve seamless speaker-to-speaker blending effects in multi-channel systems.

  • Gold-plated, professional-style 5-way binding posts offer the most secure connection options.

Dimensions - Mounting Options Integrated keyhole slot for wall mounting
Dimensions - Product Weight (each) 9 pounds
Dimensions Cabinet Dimensions - Depth 7 7/16 (18.89cm) "
Dimensions Cabinet Dimensions - Height 12 (30.48cm) "
Dimensions Cabinet Dimensions - Width 11 3/8 (28.89cm) "
Dimensions Enclosure Type - Mid-High Array Enclosure Type Vented
Driver Complement Mid / Woofer - Diameter 5 1/4 (13.34cm) "
Driver Complement Mid / Woofer - Quantity 1
Driver Complement Mid / Woofer - Type Dynamic Balance driver with polymer composite cone and rubber surround
Driver Complement Tweeter - Diameter 1 (2.54cm) "
Driver Complement Tweeter - Quantity 2
Driver Complement Tweeter - Type Dynamic Balance silk polymer composite dome tweeters
Electrical - Efficiency 88 dB
Electrical - Inputs 5-way binding posts
Electrical - Lower -3dB Limit 60 Hz
Electrical - Nominal Impedance 8 ohms
Electrical - Recommended Amplifier Power 20-125 watts per channel
Electrical - Total Frequency Response 50Hz-27kHz
Electrical - Upper -3dB Limit 26 kHz
Shipping - Total Shipping Weight 25 pounds
Shipping - Unit of Measure Pair
Warranty - Speaker Warranty 5 years parts and labor (original purchaser)