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Definitive Technology D9 Demand Series High Performance Bookshelf Speakers (Pair)

UPC: 747192128968
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Original price $749.00
Current price $369.99

SKU DemandD9Black
Color: Black

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Definitive Technology D9 Demand Series High Performance Bookshelf Speakers (Pair)

Definitive Technology Demand D9 high-performance bookshelf speakers deliver full-range, room-filling sound and precise imaging in a modern, elegant styling. Featuring technology advancements to both our aluminum dome tweeter and midrange/woofer sections, each speaker delivers an unrivaled sweet spot, smoother high-frequency reproduction, and three-dimensional imaging for the most technically-advanced, premium bookshelf listening experience.

  • 1 Aluminum Dome Tweeter with 20/20 Wave Alignment Lens and Laterally Offset Tweeter Assembly
  • Laterally Offset Tweeter Assembly
  • BDSS (Balanced Double Surround System) Midrange/woofer
  • Integrated passive bass radiator in each speaker produces superior low-end extension


    Coupled with our new 20/20 Wave Alignment Lens , our annealed aluminum dome tweeter delivers smoother high frequency response and improved dispersion for a rich and balanced listening experience. Offsetting the tweeter by 5 delivers a more precise center stereo image by eliminating undesirable symmetric diffraction off the corners of the front baffle.

    Extruded Aluminum Front Baffle

    Clean, modern industrial design with a bead blasted finish provides a timeless look and feel that fits any d cor.


    Patented Linear Response Waveguide extends both on and off axis frequency response, while improving dispersion for more natural mid-range timbre and more precise imaging.

    BDSS Midrange/woofer

    Patented Balanced Double Surround System (BDSS) midrange/woofer provides greater excursion and output that results in superior mid-range detail and punchier bass compared to drivers of similar size.

    Passive Bass Radiator

    Integrated passive bass radiator in each speaker produces superior low-end extension. Plus, the addition of a larger spider reduces rocking and increases linearity for deep, tight, clean bass response.

    Annealed Aluminum Dome Tweeter

    Our annealed aluminum tweeters are precision engineered to articulate nuance and detail in the high-frequency bands for a crystal-clear listening experience.

    Painted Piano Black Gloss Cabinet

    Each cabinet is hand-crafted to blend seamlessly with your lifestyle meticulously sanded, painted with five layers of premium black gloss paint, then buffed for a near-mirror finish (Level 6) for an uncompromising look in your home.

    Acoustically Transparent Magnetic Grille

    The included acoustically transparent magnetic black speaker grilles provide natural, uncolored sound when placed on the speaker, and remove easily when you want to enjoy looking at them fully uncovered.

    Optional Demand ST1 Speaker Stands

    The optional ST1 speaker stands (sold separately) elevate the speaker to the ideal listening height (32 ) and can be filled with your choice material (ex. sand) to provide a solid and stable speaker foundation.


    Total Pieces 2


    Included Accessories (2) Acoustically transparent magnetic black speaker grilles
    Optional Accessories (1) ST1 Demand Series Speaker Stands (Pair) - Sold Separately


    Cabinet Warranty 5 years
    Drivers Warranty 5 years
    Original Purchaser Only Yes

    Shipping Cartons

    Carton 1

    High-Performance Bookshelf Speaker

    Qty Included Pair
    Orientation Vertical
    Height 11.71" (29.74 cm)
    Width 6.5" (16.51 cm)
    Depth 11.97" (30.4 cm)
    Driver Enclosure Type MDF cabinet with extruded natural bead-blasted aluminum front baffle

    Driver Complement

    (1) 5.25" (13.34 cm) d (Round) Polypropylene BDSS Bass - Mid/Woofer
    (1) 1" (2.54 cm) d (Round) Annealed Aluminum Dome and Laterally Offset - Tweeter
    (1) 5" (12.7 cm) h x 9" (22.86 cm) w (Oval) Passive - Bass Radiator

    Audio Quality

    Total Frequency Response 44 Hz 24 Hz
    Nominal Impedance 8 ohms
    Sensitivity (1 watt @ 1 meter) 88 dB
    Lower and Upper -3dB Limits 64 Hz 22 Hz


    Audio Inputs
    Speaker Inputs (1) (Set) 5-Way Binding Posts - Gold Plated

    On-Stand Mount

    Mounting Type 1/4 in - 20 Threaded Insert
    Available Orientations Vertical
    Mounting Location Bottom of Speakers

    On-Shelf Mount

    Mounting Type

    Available Orientations Vertical

    External Amplifier

    Recommended Amplifier Power Per Channel 20 watts 150 watts