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Definitive Technology D9 Demand Series High-Performance Bookshelf Speaker (Pair)

Key Features

Performance & Sound Quality

  • Pair of high-performance bookshelf speakers engineered for detailed, balanced audio in stereo or surround sound systems

  • Natural and dynamic sound signature with clear highs, well-defined midrange, and controlled low frequencies

  • Precision-tuned crossover network for smooth integration between drivers and coherent sound reproduction

  • Wide sound dispersion for broad coverage and strong imaging across listening positions

Driver Configuration

  • High-quality mid/bass drivers tuned for articulate midrange and impactful low-end performance

  • Dedicated high-frequency tweeters for crisp, extended treble and refined details

  • Low-distortion driver design for accurate and dynamic audio performance

Build & Design

  • Rigid, low-resonance cabinet construction to minimize distortion and coloration

  • Compact bookshelf form factor suitable for stands, shelves, or integrated AV systems

  • Premium finish that complements modern home audio and theatre setups

  • Durable build quality for long-term reliability

System Compatibility

  • Compatible with a wide range of AV receivers, amplifiers, and home theatre systems

  • Ideal as front left/right speakers in 2.0/2.1 systems or as surround speakers in multichannel setups

  • Suited for medium to small listening rooms where high-performance sound is desired

System Benefits

  • Balanced and engaging sound for music, movies, and TV audio

  • Excellent clarity, imaging, and detail from a compact speaker package

  • Designed to deliver refined soundstage and immersive audio in a versatile format

Description

Definitive Technology D9 Demand Series High-Performance Bookshelf Speaker

Demand Series High-Performance Bookshelf Speakers

  • 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

Demand Series D9

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

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 décor.

LINEAR RESPONSE WAVEGUIDE™

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 Gloss Black 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.

 

Specifications

D9 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
48 Hz ? 24,000 Hz
Nominal Impedance
4 ohms
Sensitivity (1 watt @ 1 meter)
88 dB
Lower and Upper -3dB Limits
64 Hz ? 22,000 Hz

INPUTS

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

ON-STAND MOUNT

SMounting Type
1/4 in – 20 Threaded Insert
Available Orientations
Vertical
Mounting Location
Bottom of Speakers
Available Orientations
Vertical
Recommended Amplifier Power Per Channel
20 watts? 150 watts
A/V Receiver Crossover Settings
Small (80 Hz)
Included Accessories
(2) Acoustically transparent magnetic black speaker grilles
Optional Accessories
(1) ST1 Demand Series Speaker Stands (Pair) – Sold Separately

 

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