Definitive Technology D11 Large High-Performance Bookshelf Speakers

Product Description

The Definitive Technology D11 large high-performance bookshelf speakers combine refined craftsmanship with advanced acoustic engineering to deliver a superior listening experience. At the heart of the D11 is a 1" aluminum dome tweeter paired with the innovative 20/20 Wave Alignment Lens™ and a laterally offset tweeter assembly. This setup delivers a smoother high-frequency response and wider dispersion for a richer, more balanced soundstage. The 5° offset eliminates symmetric diffraction from the baffle edges, resulting in a more precise and focused stereo image.

Enhancing the speaker’s sonic integrity is the Linear Response Waveguide™, a patented design that extends frequency response on and off axis, improving dispersion and ensuring a more natural midrange timbre with exceptionally accurate imaging. For deeper and more dynamic midrange and bass performance, each speaker is equipped with the BDSS™ (Balanced Double Surround System) midrange/woofer, which allows for greater excursion and output. This provides a level of detail and punchiness in the sound that exceeds what’s expected from drivers of comparable size.

Visually, the D11 blends cutting-edge performance with timeless design. The extruded aluminum front baffle features a clean, modern industrial look with a bead-blasted finish that complements any décor. Further elevating its premium feel, the cabinet is hand-crafted and finished in high-gloss piano black, undergoing a meticulous process that includes five layers of paint and fine sanding, culminating in a near-mirror Level 6 finish. The result is a speaker that not only sounds exceptional but looks stunning in any room.

Key Features

The Definitive Technology D11 large high-performance bookshelf speakers are engineered to deliver premium sound quality in a compact, elegant form factor. At the core of their design is a 1” aluminum dome tweeter featuring the innovative 20/20 Wave Alignment Lens™ and a laterally offset tweeter assembly, which work together to deliver crisp, well-dispersed high frequencies with pinpoint accuracy and reduced diffraction. The speakers also feature Definitive’s signature BDSS™ (Balanced Double Surround System) midrange/woofer, allowing for greater excursion and improved bass response, all while maintaining clarity and detail in the midrange.

Each D11 speaker incorporates a Linear Response Waveguide™, which enhances off-axis performance and creates a wider, more natural soundstage ideal for both stereo and home theater applications. Additionally, an integrated passive bass radiator is built into each speaker, delivering superior low-end extension that brings depth and richness to your audio without the need for a subwoofer. Whether you're listening to music or watching films, the D11 bookshelf speakers combine refined design with high-fidelity performance for a truly immersive listening experience.

Demand D11

Definitive Technology Demand D11 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. 

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.

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.

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

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 the innovative 20/20 Wave Alignment Lens™, the D11’s annealed aluminum dome tweeter delivers a smoother high-frequency response and improved sound dispersion, creating a rich and balanced listening experience. The tweeter is offset by 5 degrees, a subtle but powerful design choice that eliminates undesirable symmetric diffraction from the corners of the front baffle. This results in a more precise center stereo image, ensuring every vocal and instrument is positioned exactly where it belongs within the soundstage.

Extruded aluminum front baffle

The D11’s clean, modern industrial design is highlighted by its extruded aluminum front baffle. Finished with a bead-blasted texture, it adds both strength and visual appeal. This sleek design element gives the speaker a timeless look that integrates seamlessly into any contemporary or classic interior.

Linear Response Waveguide™

The patented Linear Response Waveguide™ plays a crucial role in delivering expansive and immersive sound. It extends the speaker’s on- and off-axis frequency response while enhancing dispersion. The result is a more natural midrange timbre and improved imaging, allowing for a lifelike and engaging audio experience, even from different listening positions in the room.

BDSS™ midrange/woofer

At the core of the D11’s dynamic performance is the patented BDSS™ (Balanced Double Surround System) midrange/woofer. This advanced driver technology enables greater excursion and output, producing superior midrange detail and punchier bass compared to traditional drivers of similar size. Whether you're listening to subtle acoustic music or cinematic soundtracks, the BDSS™ driver ensures clarity and impact across the board.

Demand elegance – Painted piano black cabinet

Beyond performance, the D11 is crafted to impress visually. Each speaker cabinet is hand-finished with precision meticulously sanded and painted with five layers of premium black gloss paint. The surface is then buffed to a near-mirror finish (Level 6), delivering a luxurious, high-end appearance. This attention to detail ensures the D11 not only sounds extraordinary but also looks stunning in any high-style living space.

Technical Specifications