Polk Audio FXi A4 Dipole / Bipole Surround Speaker Pair

Product Research

Driver Technology

Dynamic Balance:

• Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance.
• Eliminating resonance in speakers results in a wide, smooth response and low distortion.

Polymer Composite Woofers:

• Each speaker features a 5.25" polymer composite woofer for smooth wide-range response with low distortion.
• For high performance durability, each woofer uses a butyl rubber surround.

Silk/Polymer Tweeters: 

• Each speaker has dual 1" silk/polymer dome tweeters that provide clear, detailed highs and spacious surround effects.
• Each tweeter uses a heat sink on the Neodymium magnet for superior heat dissipation, power handling and reliability.

Frequency Response: 

• The overall frequency response is 50Hz-27kHz and the -3dB frequency response is 60-26kHz.

Enclosure Design

Enclosure: 

• Each enclosure has a triangular shape with the speaker faces angled at 45 degrees.
• One face has a tweeter and a woofer, while the other face has a tweeter and port tube opening.
• A switch for selecting Dipole or Bipole operation is located on the rear of the speaker above the speaker's 5-way binding post speaker terminals.
• One of the speakers is specifically designed for the "left" channel and the other for the "right" channel.

Acoustically Inert Cabinets:

• Each speaker cabinet features all-MDF construction with internal bracings that virtually eliminate sound-muddying resonance.
• The speakers are finished in either a black or white laminate finish.

Anti-Diffraction Grilles:

• The floating anti-diffraction grilles minimize grille diffraction for spacious, 3-dimensional imaging.

Port:

• On the side with only a tweeter, there is a single port tube opening for increased and extended bass response.

Connections