Definitive Technology Demand D9 High-Performance Bookshelf Speakers


Full-range, room-filling sound and precise imaging driven by unique technologies. The D9 delivers a truly premium bookshelf listening experience in a midsize footprint.

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Mid-Sized Bookshelf Loudspeakers with a 5.25” Midrange/Woofer

Precise Stereo
Laterally Offest Tweeter Assembly
Superior Low
End Extension
5 x 9” Passive Bass Radiator
Natural Midrange
and Smooth Treble
BDSS™ 5.25” Woofer and Linear Response

Superior Details
Finely Balanced
Featuring unique technologies such as our Balanced Double Surround System, linear response waveguide, and laterally offset tweeter assembly, the D9 Mid-Sized Bookshelf Loudpeakers deliver top-shelf, balanced audio for any application.

8” Aluminum Dome Tweeter
for clear, precise highs
The D9 couples a laterally offset 1” Aluminum Dome Tweeter with our 20/20 Wave Alignment Lens™. We offset the tweeters by 5°, minimizing wave cancellations off the front baffle to deliver a more precise center stereo image and ensure clear, detailed high-frequency performance.

Exclusive BDSS™
The D9’s 5.25” patented Balanced Double Surround System™ (BDSS) mid/bass driver provides greater excursion and output for superior midrange detail and smoother bass compared with other drivers of similar size.

Integrated Bass Radiator
for superior low-end extension
The D9 produces superior low-end extension with an integrated 5” x 9” passive bass radiator. Plus, the addition of a larger spider to the radiator reduces rocking and delivers cleaner, tighter bass response.

Audiophile-Quality Crossovers
for balance and power
Demand Series crossovers are built with the latest premium audiophile-quality parts, including polypropylene metal-film capacitors and air-core inductors. These high-end components meticulously manage frequencies for clean and crystalline treble, refined and articulate midrange, and linear, low-distortion bass. This ensures that every detail comes through within a clear, balanced presentation that never sacrifices power.

Linear Response Waveguide™
for natural imaging
Our patented Linear Response Waveguide™ extends both on-axis and off-axis frequency dispersion for more natural midrange timbre and precise imaging.

Help for Home Cinema
Flawless Home
Theater Audio
It isn’t always about the music. Designed for unwavering audio performance, the D9 flawlessly reproduces home cinema audio, too.
Artistry to the
eye and ear
Extruded aluminum front baffles capture a clean, modern aesthetic with a bead-blasted finish to fit any decor.
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Each speaker is meticulously sanded and painted with five layers of premium gloss paint, then buffed to a near-mirror finish for an undeniably fashionable look in your home.