Definitive Technology Dymension DM90

The Dymension™ DM90 height module attaches to Dymension DM80 and DM70 bipolar tower speakers to provide overhead sound in immersive Dolby Atmos and DTS:X systems.

  • Amazing Overhead Audio
  • Crystal Clear Highs
  • Natural, Impactful Sound


The DM90 integrated height module attaches to Dymension DM80 and DM70 bipolar tower speakers to provide upward-firing drivers that make the towers Dolby Atmos and DTS:X-enabled. With DM90s attached to DM80 or DM70 speakers, you can create the immersive sound system of your dreams.


Add-On Modules for Dolby Atmos and DTS:X 3D overhead audio

An upward-firing mid/bass woofer and tweeter project sound toward the ceiling where it reflects back to you, providing a sense of height that translates to a more immersive listening experience.


Plug-and-Play Integration for easy, quick, secure installation

An easy snap-in connection system makes electrical connections and secures the height module to the top of Dymension DM80 or DM70 bipolar tower speakers.


BDSS System and Linear Response Waveguide for smooth midrange and lifelike imaging

Patented Balanced Double Surround System (BDSS) technology improves the midrange and provides a uniform soundstage with seamless bass and mid integration. A Linear Response Waveguide™ extends and smooths off-axis dispersion for great sound everywhere in the room.


Aluminum Oxide Tweeter for crystal clear highs

A new driver design provides smooth extended response with crisp transients, exceptional definition, and pinpoint-precise imaging, for incredible clarity and lifelike realism.

Cinematic movie magic

Get swept away by the action onscreen as you’re enveloped in a deep, defined soundstage. From a whisper to a roar, experience it all in striking realism.


A Concert in Your Living Room

Dymension speakers fill the entire room with enveloping sound. They seem to vanish as you hone in on every voice and every instrument—just like being there, live.


Level Up Your Gaming Environment

Whether you’re fighting evil or exploring new universes, unlock the ultimate experience when you hear sonic details in dazzling new dimensionality.


Timbre-Matched for seamless Definitive Technology sound

Consistent sound across other Definitive Technology series gives you the flexibility to mix and match Dymension™ and all Definitive Technology in-wall and in-ceiling speakers to design your dream home theater and whole-home system.

Dimensions (W x H x D)185 x 152 x 389mm (7.3″ x 6.0″ x 15.3″)
Weight4.6kg (10.1 lbs)
Grille MaterialAcoustically transparent black cloth (not removable)
Tweeter1x 1″ aluminum oxide dome
Midrange/Midbass1x 5.25″ BDSS™ with Linear Response Waveguide™
Frequency Response81Hz – 30kHz (-10dB)
137Hz – 27kHz (-3dB)
Nominal Impedance4Ω (8Ω compatible)
Sensitivity90dB (2.83V/1m)
Recommended Amplifier Power Rating25-100W
CertificationsDolby Atmos