DEFINITIVE TECHNOLOGY
Definitive Technology Demand Series D9 - Bookshelf Speakers (Pair)
Definitive Technology D9
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 Loudspeakers 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™ midrange/woofer
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.
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 décor.
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.
SPECIFICATIONS
| Quantity 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 | 5.25" (13.34 cm) d (Round) Polypropylene BDSS Bass - Mid/Woofer |
| 1" (2.54 cm) d (Round) Annealed Aluminum Dome and Laterally Offset - Tweeter | |
| 5" (12.7 cm) h x 9" (22.86 cm) w (Oval) Passive - Bass Radiator | |
| 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 |
| Mounting Type | 1/4 in - 20 Threaded Insert |
| Available Orientations | Vertical |
| Mounting Location | Bottom of Speakers |
| Available Orientations | Vertical |
| Speaker Inputs | (Set) 5-Way Binding Posts - Gold-Plated |
| Recommended Amplifier Power Per Channel | 20 watts → 150 watts |
| A/V Receiver Crossover Settings | Small (80 Hz) |