Definitive Technology D15

Demand Series D15 loudspeakers deliver smooth high-frequency reproduction, formidable lows, and room-filling three-dimensional imaging for expansive audio.

  • Full-Range, Room-Filling Sound
  • High-Frequency Performance
  • Superior Midrange and Punchier Bass
  • Available in Black and White


Clear, Precise Highs

The D15 couples a laterally offset 1″ Aluminum Dome Tweeter with our 20/20 Wave Alignment Lens. We offset the tweeters by 5 degrees, minimizing wave cancellations off the front baffle to deliver a more precise center stereo image and ensure clear, detailed high-frequency performance.


Superior Detail & Natural Midrange

The D15’s 5.25″ patented Balanced Double Surround System (BDSS) mid/bass driver provides greater excursion and output for superior midrange detail and punchier bass compared with other drivers of similar size.


Deeper, Cleaner Bass

The D15’s 5.25″ custom-woven carbon fiber woofers produce superior cone rigidity for deep, evenly extended bass notes while preventing distortion-causing cone deformation that can occur with less rigid materials.



Dual 8″ Passive Bass Radiators
for visceral bass response

Twin integrated 8” passive bass radiators in each speaker produce superior low-end extension for highly controlled, highly impactful bass.


Audiophile-Quality Crossovers
for beautifully balanced audio

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, precise imaging

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

High-Performance Tower Speaker
Qty Included1
Dimensions (W x H x D)229.9 x 1035.8 x 326.6mm (9.05″ x 40.78″ x 12.86″)
Weight23.59kg (52 lbs)
Driver Enclosure TypeMDF cabinet with extruded natural bead-blasted aluminum front baffle
Total Frequency Response39 Hz → 24,000 Hz
Nominal Impedance8Ohms
Sensitivity (1W @ 1m)85.5dB
Lower and Upper -3dB Limits48 Hz → 22,000 Hz
Recommended Amplifier Power Per Channel30W → 300W