Polk Audio Fxi-A4 Bipole Surround Speakers

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.

Key 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.

Specifications

• Orientation

  Horizontal

• Height

  12" (30.48 cm)

• Width

  11.375" (28.89 cm)

• Depth

  7.437" (18.89 cm)

• Weight

  9 lbs (4.08 kg)

• Driver Enclosure Type

  Acoustically Tuned Vent

• Driver Complement

  • (1)  5.25" (13.34 cm) d (Round) Dynamic Balance driver with polymer composite cone and rubber surround - Mid/Woofer
  • (2)  1" (2.54 cm) d (Round) Dynamic Balance silk polymer composite dome - Tweeter

ON-WALL MOUNT

• Mounting Type

  Keyhole Hanger

• Available Orientations

  Horizontal

AUDIO QUALITY

• Total Frequency Response

  50 Hz → 27,000 Hz

• Nominal Impedance

  8 ohms

• Lower and Upper -3dB Limits

  60 Hz → 26,000 Hz

INPUTS

• Audio Inputs

• Speaker Inputs

  (1) Pair of 5-way Binding Posts - Gold Plated

EXTERNAL AMPLIFIER

• Recommended Amplifier Power Per Channel

  20 watts → 150 watts