Definitive Technology Dymension DM70

Dymension™ DM70 tower speakers deliver dynamic, room-filling sound with extended bass by leveraging Definitive Technology’s signature bipolar arrays, proprietary drivers, and integrated 10″ subwoofers.

  • Shockingly Spacious Sound
  • Deep, Extended Bass
  • Crystal Clear Highs


Fully Balanced,
Adjustable Bipolar Array

for a spacious,
immersive soundstage

Bipolar driver arrays direct more sound in more directions than traditional speakers, for incredible depth-of-field and a truly enveloping listening experience. Adjustable to optimize for room placement.


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

Our 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.


Built-In 10" Powered

for thunderous bass

An integrated 10” subwoofer, powered by an all-new, high-performance Class D amplifier, delivers clean, detailed bass that perfectly blends with mids and highs and feels consistent no matter where you sit.


Aluminum Oxide

for crystal clear highs

New driver designs provide smooth extended response with crisp transients, exceptional definition, and pinpoint-precise imaging, for incredible clarity and lifelike realism.


3XR Architecture with
Dual Passive Radiators

for seamless,
balanced bass

3XR Architecture combines a subwoofer and two passive radiators to produce huge, balanced bass that you can feel, with less distortion than traditional ported designs.


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

Fully balanced bipolar arrays fill the entire room with enveloping sound. Your speakers seem to vanish as you hone in on every voice and pinpoint 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.


DM90 Integrated Height
Module Option

for unforgettable Atmos

Available separately, a DM90 Atmos-certified and DTS:X-compatible height module connects to the top of the DM70 to extend sound above you for total sonic immersion and hyper-realistic overhead effects.


Patented Intelligent
Bass Control

for precise low-end tuning

Bass will never get in the way of dialogue and other critical soundtrack elements. Sophisticated digital processing seamlessly blends subwoofer output with mids and highs to provide powerful deep-bass performance without sacrificing midrange clarity.


Dimensions (W x H xD)287 x 1204 x 407mm (11.3" x 47.4" x 16.0")
287 x 1356 x 407mm (11.3" x 53.4" x 16.0") ; w/ optional DM90 height module, sold seperately
Weight33.6kg (74.1 lbs)
Grille MaterialAcoustically transparent black cloth (not removable)
Tweeter2x 1" aluminum oxide domes
Midrange/Midbass4x 5.25" BDSS™ with Linear Response Waveguide™
Bipolar ArrayFully balanced, adjustable
Bipolar Array AdjustmentRear tweeter switch: 0dB, -6dB
Subwoofer System Driver Complement1x 10" subwoofer
2x 10" passive radiators
Frequency Response25 Hz–30 kHz (-10dB)
30 Hz–23 kHz (-3dB)
Nominal Impedance4Ω (8Ω compatible)
Sensitivity90dB (2.83V/1m)
Recommended Amplifier Power Rating 50-300W
Subwoofer Amplifier250W (Peak) Class D
Intelligent Bass ControlVariable + 12dB/-15dB
Included Accessories4x Adjustable hard floor glides
4x Adjustable carpet spikes