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Sound United
Dymension DM40 Slim Bipolar Tower Speaker
Incredible,
Room-Filling Sound
Dymension™ DM40 tower speakers deliver dynamic, room-filling sound with robust bass by leveraging Definitive Technology’s signature bipolar arrays.
Spacious, Immersive Soundstage
Anatomy of an
Iconic Speaker
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 film or your favorite songs. Innovations include aluminum oxide tweeters, an adjustable bipolar array, and an acoustically optimized enclosure.
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.
Long-Throw Midrange
Woofers
for smooth, detailed
response
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.
Ported Enclosure
with Column
Resonance Control
for robust bass response
A tuned cabinet features acoustically optimized chambers for improved bass extension and midrange clarity.
Aluminum Oxide
Tweeters
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.
Slim Cabinet Design
for unobtrusive integration
into rooms
The DM40’s slim footprint makes it easy to integrate into virtually any room setting. And, it looks as good as it sounds.
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.
Stability and versatility for flexible placement
Included cabinet foot spikes and pads provide the ideal way to place and level DM40 speakers on virtually any floor surface, providing acoustic isolation and stability.
Specifications
| Dimensions (H x W x D) | 37.4 x 10.3 x 10.0 in. (950 x 261 x 255 mm) |
| Weight | 38.1 lbs (17.3 kg) |
| Color | Black |
| Grille Material | Acoustically transparent black cloth (not removable) |
| 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 |
| Warranty | 2 years |
| Included Accessories | • (4) Adjustable hard floor glides
• (4) Adjustable carpet spikes |
Product Documentation
Information Sheet
Owner's Manual