Niles DS7FX (Pr.) 7-inch In-Ceiling Surround Effects Loudspeaker ,Patented Directed Sound field technology directs the sound to the listening area, regardless of where the loudspeakers are installed. 7-inch Glass Fiber Woofer Cone With Curvilinear Profile .

Surround Effects loudspeakers are optimised for rear/side surround sound in 5.1 and 7.1-channel home theater applications. The DS7FX is designed for use with Niles DS7HD, DS7PR, and DS7MP left/center/right loudspeakers. Glass fiber woofer cones and dual Teteron tweeters on a multi-axis array provide ultra-realistic surround sound effects.


  • Patent-pending Fully Pivoting Woofer Assembly Focuses The Bass And Midrange Directly Into The Listening Area.
  • Integrated Baffle/frame Assembly Increases The Cone Area For Deeper Bass Than Competitive Speakers Of The Same Diameter.
  • 7″ Glass Fiber Woofer Cone With Curvilinear Profile And Extended Pole For Improved Dynamics, Smoother Sound And Less Peaking At High Frequencies.
  • Dual 1″ Fluid-cooled Teteron Dome Tweeters Provide Ultra-wide Dispersion And Smooth High Frequency Response.
  • Multi-axis Tweeter Array Positions The Two Tweeters On A Different Axis And At An Opposing Angle To Create Realistic Surround Sound Effects.
  • Bipole/Dipole Switch Provides Optimum Room Matching.
  • Magnetically Attached, Rust-resistant Grille Covers Install Quickly And Provide A Low Profile Look.
  • Weather-resistant Construction Enables Installation In Wet Environments And Outdoors.
  • Optional Custom-tuned Rear Enclosure Is Precisely Shaped For Predictable Sound Performance And To Reduce Sound Transfer Into Adjacent Rooms Or Spaces.


  • Recommended Amplifier Power: 10 – 140 Watts
  • Impedance: 8 Ohm Nominal; 6 Ohm Minimum
  • Frequency Response: 52 Hz To 21 KHz +/ -3 DB
  • Maximum SPL: 107 DB
  • Voice Coil Size: 1.25″
  • Crossover Type: Asymmetric 2nd Order 2-way Computer Optimized Linkwitz Riley
  • Crossover Frequency: 2.8 KHz
  • Magnet Weight: 19.5 Oz.
  • Frame Dimensions (with Grille): 9-7/8″ (25.15 Cm) Diameter
  • Hole Cutout Dimensions: 8-1/2″ (21.60 Cm) Diameter
  • Depth Behind Ceiling (5/8″ Drywall): 5-5/16″ (13.6 Cm)



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