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Niles OS6.3Si. 6in 2 Way 125W In/Outdoor Stereo Input Loudspeaker


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Niles original OS Indoor/Outdoor Loudspeakers are constantly praised for their ability to deliver exemplary reliability and outstanding sound quality. These attributes have made Niles OS Indoor/Outdoor Loudspeakers the bestselling loudspeakers in their class.

The goal of our new OS Indoor/Outdoor line-up is to raise this bar with refined appearance and superior sonic performance, once again establishing a benchmark by which all others are judged. The new Niles OS Indoor/Outdoor Loudspeakers owe much of their performance and sound quality advantage to design elements pioneered in the award-winning Niles DS Directed SoundfieldTM Loudspeakers. Their engineering advances come from our integrated approach to driver and cabinet design. By integrating the woofer basket into the baffle of the cabinet, we are able to increase the woofer cone-area to cabinet-width ratio, thus enabling OS Indoor/Outdoor Loudspeakers to provide levels of bass performance that substantially exceed their physical size. However, deeper and more powerful bass isn’t the only refinement in the new OS Indoor/Outdoor line-up. A new and modern style enables OS Indoor/Outdoor Loudspeakers to blend seamlessly with architectural elements, both indoors and out. After the installation is complete, you will be astonished by the experience of hearing such clean and powerful sound coming from such an elegant-appearing loudspeaker.


  • Woofer Technology
  • Integrated Woofer/baffle Assembly Increases Cone Area To Provide Powerful Bass Output
  • 6″ Mica-filled Polypropylene Cone Is Extremely Rigid To Reduce Breakup And Lower Distortion
  • Butyl Rubber Cone Surround Damps Resonance And Provides Exceptional Durability
  • Dual Voice Coils Deliver Both Left And Right Channels From One Speaker
  • Tweeter Technology
  • Stereo Imaging Tweeter Array Directs The High Frequency Sounds From Both The Right And Left Channels Into A Space From One Speaker
  • Dual 1″ UltraSilk Domes With Fluid-cooling And Ultra-wide Dispersion For Clear And Detailed High-frequencies
  • Black and White


  • Design: Stereo Input Outdoor Speaker (Sold Individually)
  • Weatherproof Engineering: Enables OS Loudspeakers to handle extreme hot, cold and moist environments.
  • Advanced Material Science: Elevates appearance and longevity of the cabinet and grille, plus enhances the performance of the woofers, tweeters and crossovers.
  • Architectural Friendly Design: Delivers stellar acoustical performance yet tucks discretely away into corners and under eaves.
  • Low Diffraction Grille & Front Baffle: Ensures that the sound waves emanating from the woofer and tweeter are not reflected by the surrounding parts of the speaker for precise imaging and acoustical accuracy.
  • Nominal Impedance: 8 Ohms per channel, wired in stereo or 4 Ohms with both channels wired together
  • Recommended Amplifier Power: Up to 125 Watts – Clean undistorted power
  • Frequency Response: 75 Hz – 21 kHz +/-3dB
  • Sensitivity: 90dB for 2.83V pink noise
  • Woofer Technology
    • Integrated woofer/baffle assembly increases cone area to provide powerful bass output
    • 1 x 152mm (6″) summing (stereo) woofer – Mica-filled polypropylene cone is extremely rigid to reduce breakup and lower distortion
    • Butyl rubber cone surround damps resonance and provides exceptional durability
  • Tweeter Technology
    • 2 x 25mm (1″) Stereo Imaging tweeter array – UltraSilk™ dome with fluid-cooling and ultra-wide dispersion for clear, detailed and extended high-frequencies
  • Rigid, Acoustically Inert Cabinet: Prevents transmission of unwanted vibrations for clean and dynamic bass response.
  • All-Weather Versatility: Reduces installation limitations to provide great sound from the beaches of Cairns to the winters of Tasmania.
  • Integrated Mounting Bracket: Provides a variety of secure, quick and easy mounting solutions.
  • Tapered Shape: Facilitates mounting in corners and under eaves.
  • Inverted Gold Plated 5-Way Binding Posts: Repel moisture and ensure positive connections in virtually any conditions over long periods of time.
  • Stable Shelf Placement: Allows Niles OS Loudspeakers to be used as traditional bookshelf speakers.
  • Dimensions (includes bracket – HxWxD): 338 x 208 x 233mm
  • Weight: 5kg including bracket
  • Manufacturer’s Warranty: Niles Outdoor Loudspeakers are covered by a conditional Lifetime warranty from manufacturing defects.

Additional information