Definitive Technology D9 Demand Series High-Performance Bookshelf Speaker

Description

The Definitive Technology Demand D9 high-performance bookshelf speakers deliver full-range, room-filling sound with precise imaging, all wrapped in a modern, elegant design. Engineered for premium performance, the D9 features a 1" aluminum dome tweeter with a 20/20 Wave Alignment Lens™ and a laterally offset tweeter assembly, which enhances dispersion and provides a wider, more precise sweet spot. The BDSS™ (Balanced Double Surround System) midrange/woofer offers greater driver excursion, resulting in exceptional clarity and dynamic midrange performance. Each speaker also includes an integrated passive bass radiator, delivering superior low-end extension and deep, impactful bass. With these advanced technologies, the Demand D9 ensures a technically sophisticated and immersive bookshelf listening experience.

The Definitive Technology D9 bookshelf speaker from the Demand Series combines refined industrial design with high-performance acoustic engineering for a truly audiophile-grade listening experience. Featuring a 5.25″ BDSS™ mid/bass driver, a 1″ annealed aluminum dome tweeter that’s laterally offset for improved stereo imaging, and a passive bass radiator, the D9 delivers detailed highs, rich mids, and tight, accurate bass from a compact enclosure.

Constructed with an MDF cabinet and an extruded natural bead-blasted aluminum front baffle, the D9 offers both sonic purity and striking visual appeal. With a frequency response of 48 Hz to 24 kHz, 4-ohm impedance, and 88 dB sensitivity, it provides dynamic, room-filling sound whether used in stereo setups or as part of a high-end home theater system. Precision-engineered to perform beautifully on stands or shelves, the D9 redefines what’s possible from a compact speaker design.

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.

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.

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.

Technical Specifications