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Definitive Technology

Definitive Technology Dymension DM40 Slim Bipolar Floorstanding Speaker

Regular price $999.00
Sale price $999.00 Regular price
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Definitive Technology Dymension DM40 Slim Bipolar Floorstanding Speaker Overview

Product Information

Model: 300567-01-00-005 | UPC: 747192137120


What's In The Box

Product Information

Model: 300567-01-00-005 | UPC: 747192137120

Slim Speaker, Room-Filling Sound

The Dymension™ DM40 fills your home theater with larger-than life sound. Crystal clear highs, incredible depth-of-field, and robust bass envelop you whether you’re enjoying the latest blockbuster or your favorite songs. Innovations include aluminum oxide tweeters, an adjustable bipolar array, and acoustically optimized enclosure.


  • Fully balanced, adjustable bipolar array
  • 4.5" long-throw midrange woofers
  • Aluminum oxide tweeters
  • Ported enclosure with column resonance control
  • Slim cabinet design

Fully Balanced, Adjustable Bipolar Array

Definitive’s bipolar driver arrays direct more sound in more directions than traditional speakers for incredible depth-of-field and a truly enveloping listening experience. The bipolar effect can be adjusted to optimize for room placement.

Long-Throw Midrange Woofers

DM40’s four 4.5” woofers feature composite polymer cones that produce superior midrange detail. Long-throw surrounds optimize driver excursion for improved low-end performance.

Aluminum Oxide Tweeters

The DM40’s rigid, well-damped tweeters utilize a new aluminum oxide design to provide smooth, extended response with crisp transients and exceptional definition. Pinpoint precise imaging imparts lifelike realism, whether you’re immersed in a movie or your favorite tunes.

Ported Enclosure with Column Resonance Control

Tuned cabinet features acoustically optimized chambers for improved bass extension and midrange clarity.

Slim Cabinet Design

A slim frontal area makes it easy to integrate the DM40 into virtually any room setting so it looks as good as it sounds.

Cabinet Foot Spikes/Pads

Included cabinet foot spikes/pads provide the ideal way to place and level DM40 speakers on virtually any floor surface providing acoustic isolation and stability.


Consistent sound across other Definitive Technology series gives you the flexibility to mix and match Dymension™, Dymension CI, and Mythos speakers to design your dream home theater and whole home system.

DM95 On-Wall Height Satellite Module Option

Available separately, this DM95 Atmos compatible and DTS:X-compatible wall mountable height module extends sound above you, for total sonic immersion with hyper realistic overhead effects.


  • Dimensions (W × H × D): 10.3” × 37.4” x 10”
  • Weight: 38.1 lbs
  • Tweeter (2): 1 in. aluminum oxide domes
  • Midrange/Midbass (4): 4.5 in. woofers
  • Enclosure Type: Ported
  • Bipolar Array: Fully balanced, adjustable
  • Bipolar Array Adjustment: Rear tweeter switch: 0dB, -6dB
  • Frequency Response
    • 38 Hz–30 kHz (-10dB)
    • 55 Hz–23 kHz (-3dB)
  • Nominal Impedance: 4Ω (8Ω compatible)
  • Sensitivity: 87dB (2.83V/1m)
  • Recommended Amplifier Power Rating: 50–250W

What's In The Box

  • Dymension DM40 Slim Bipolar Floorstanding Speaker
  • (4) Adjustable hard floor glides
  • (4) Adjustable carpet spikes
  • Manual
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