Definitive Technology Dymension DM90 Integrated Height Module for DM80 and DM70 Speakers - Dreamedia AV
Definitive Technology Dymension DM90 Integrated Height Module for DM80 and DM70 Speakers - Dreamedia AV
Definitive Technology Dymension DM90 Integrated Height Module for DM80 and DM70 Speakers - Dreamedia AV

Definitive Technology Dymension DM90 Integrated Height Module for DM80 and DM70 Speakers

Dolby Atmos certified audio with height module

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Definitive Technology Dymension DM90 Integrated Height Module for DM80 and DM70 Speakers

Elevate Your Home Theater Experience

Imagine a sound so precise and immersive that it elevates your home theater experience to new heights. The Definitive Technology Dymension DM90 Integrated Height Module is engineered to do just that. Designed to complement your existing DM80 and DM70 speakers, this module brings the power of Dolby Atmos to your living room, creating a soundscape that is as expansive as it is detailed.

Unmatched Audio Quality

The DM90 is not just about adding another dimension to your audio—it's about refining the quality to its purest form. Here's what makes it stand out:

  • Crisp Highs: The 1-inch aluminum oxide dome tweeter delivers crystal-clear high frequencies, ensuring that every subtle nuance of the soundtrack is heard.
  • Rich Midrange: Equipped with a 5.25-inch BDSS™ midrange/midbass driver with Linear Response Waveguide™ technology, the DM90 produces a rich, clean, and accurate sound.
  • Expansive Frequency Response: With a frequency response range from 81 Hz to 30 kHz, you'll catch every detail from the deepest bass to the highest treble.

Tailored for Dolby Atmos

Dolby Atmos certification is not just a label—it's a promise of an enveloping sound that moves around you in three-dimensional space. Whether it's the rustle of leaves, the roar of a jet overhead, or the subtle whisper in a quiet scene, the DM90 height module ensures you're at the center of the action.

Design That Speaks Volumes

The DM90's sleek black design and acoustically transparent grille material are made to blend seamlessly with your home décor. It's not just about the sound; it's about an aesthetic that complements your space:

  • Compact Dimensions: Measuring 6.0 x 7.3 x 15.3 inches, it's designed to be unobtrusive while delivering expansive sound.
  • Solid Build: Weighing in at 10.1 lbs, this module has a substantial, quality feel that speaks to its durability.

Power and Compatibility

The DM90 is as versatile as it is powerful, compatible with a range of amplifiers rated between 25-100W. This flexibility ensures that it can fit seamlessly into your existing setup, enhancing your audio without the need for additional equipment.

Peace of Mind with Warranty

Your investment is protected by a robust 5-year warranty. This commitment to quality assures that your DM90 will be a key part of your home entertainment system for years to come.

Experience the Difference

The DM90 is not just another speaker—it's a transformative component of your home theater system. Here's why it will change the way you experience entertainment:

  • Dolby Atmos Certification: Feel the power of cinema-quality sound in your own home.
  • Linear Response Waveguide™ Technology: Experience consistent, high-quality audio performance.
  • Wide Frequency Response: Enjoy the full spectrum of sound, from the highest highs to the lowest lows.
  • Amplifier Compatibility: Easily integrate the DM90 with a wide range of amplifiers, ensuring a match with your current system.
  • Solid Construction: Trust in the sturdy build quality, backed by a 5-year warranty.

Setting Up Your Dream Home Theater

At Dreamedia, we know that designing the perfect home theater system can be complex. Let us take the guesswork out of the equation. Our experts are here to guide you through the process, ensuring that the DM90 is not only a perfect fit for your system but also that it's optimized for your unique space.

Engage with Confidence

We understand that choosing a high-end audio module is a significant decision. You might be wondering:

  • Will it fit my space? The DM90's compact design is crafted to integrate with your home theater without taking over your living space.
  • Is it difficult to install? Setup is straightforward, and our Dreamedia team is always here to assist if you need help or advice.
  • Can it really enhance my existing system? Absolutely. The DM90 is designed to complement and enhance the DM80 and DM70 speakers, bringing an extra layer of depth to your audio.

The Dreamedia Promise

At Dreamedia, we are committed to helping you achieve the ultimate home theater experience. Our team is here to design, advise, and support. When you choose the Definitive Technology Dymension DM90 Integrated Height Module, you're not just buying a speaker—you're investing in a sound experience that will redefine the way you enjoy movies, music, and games.

Elevate your home theater to a realm of unparalleled sound quality and immersion with the DM90. It's not just an upgrade—it's a revolution in audio that awaits you. Discover the full potential of your entertainment system today, and let the DM90 be the crowning piece of your audio landscape.

Our Review

Definitive Technology Dymension DM90 Integrated Height Module Review


Today's home theater enthusiasts seek not just to hear but to be completely enveloped by sound. The Definitive Technology Dymension DM90 Integrated Height Module promises just that—immersive, three-dimensional audio that elevates your listening experience, quite literally, to new heights. With Dolby Atmos certification, this height module is engineered to complement the DM80 and DM70 speakers, offering a cohesive and expansive soundstage.



The DM90's sleek black finish exudes a modern charm that fits seamlessly with contemporary decor. Its compact design, measuring 6.0 x 7.3 x 15.3 inches, ensures it doesn't draw undue attention, blending elegantly with the compatible DM80 and DM70 speaker series.

Build Quality

With a weight of 10.1 lbs, the DM90 is robust, indicative of quality materials and solid construction. However, the weight may raise considerations for secure mounting, especially in setups where the module needs to be perched atop existing speakers or affixed to a wall.


The grille, cloaked in acoustically transparent black cloth, is designed to preserve sound fidelity while protecting the internal components. The non-removable nature of the grille could be a drawback for those who prioritize ease of access for cleaning or inspection.



The DM90 is versatile, supporting amplifiers with power ratings from 25 to 100 watts. This range accommodates a wide array of home theater systems, ensuring that users can integrate the module without the need for additional equipment.

Dolby Atmos Certification

Dolby Atmos represents the pinnacle of immersive audio technology, allowing sound to move in a three-dimensional space. This certification means the DM90 is not just capable of delivering superior sound but is also recognized for its ability to faithfully reproduce the precision of Atmos soundtracks.


A 5-year warranty is a testament to Definitive Technology's confidence in the DM90's durability. It offers consumers peace of mind, knowing that their investment is protected over a significant period.


Audio Quality

The DM90's 1-inch aluminum oxide dome tweeter is meticulously crafted to deliver crisp, clear high frequencies, while the 5.25-inch BDSS™ driver with Linear Response Waveguide™ ensures a smooth, rich midrange. This combination yields a detailed and natural sonic character.

Frequency Response

Boasting a frequency response of 81 Hz–30 kHz, the DM90 covers a broad spectrum. However, the lower end of this range is somewhat limited when compared to specialized height modules that may reach down into the sub-80 Hz region. The real-world effect is a slightly less impactful bass response, which is typically mitigated by the presence of a dedicated subwoofer in most home theater setups.

Sensitivity and Power Handling

With a sensitivity of 90dB, the DM90 is efficient, capable of producing substantial volume with modest amplifier power. The recommended amplifier power rating suggests the module can perform well within a variety of power envelopes, from the modest to the more robust.

Installation and Setup

Mounting and Placement

Installation is straightforward, with the DM90 designed to sit atop the compatible DM series speakers. Its weight, while indicative of quality, will necessitate a secure and stable platform. Wall mounting, if desired, should be approached with care, ensuring that the chosen fixtures can support the module's heft.


To achieve optimal performance, calibration is key. Users should follow the manufacturer’s guidelines and consider employing a receiver or processor's room correction software to fine-tune the module's output in relation to the listening environment.

Strengths and Weaknesses


The DM90's Dolby Atmos certification ensures it meets high standards for immersive audio playback. The inclusion of advanced technologies like the Linear Response Waveguide™ enhances sound dispersion and fidelity. The module's wide frequency response captures a substantial part of the audio spectrum, and its compatibility with a range of amplifiers adds to its versatility. The sturdy build and 5-year warranty offer additional value and reassurance to the consumer.


The grille's non-removability could pose a challenge over time, and the weight of the module might limit installation options or require additional hardware. Moreover, the lower frequency response limit, while ample for most applications, may not satisfy audiophiles seeking the deepest bass extension from their height channels.

Final Thoughts

The Definitive Technology Dymension DM90 is a well-crafted height module that promises to enhance any compatible home theater system with the magic of Dolby Atmos. Its sound quality, build, and warranty make it a compelling choice for those invested in the Definitive Technology ecosystem. While it has a few minor drawbacks, its strengths far outweigh them, especially for users who value aural immersion and a cohesive audio setup. The DM90 is a product that will delight those looking to bring cinematic sound into their homes with confidence and style.


Physical Specifications

  • Dimensions (H x W x D): 6.0 x 7.3 x 15.3 in. (152 x 185 x 389 mm)
  • Weight: 10.1 lbs (4.6 kg)
  • Color: Black
  • Grille Material: Acoustically transparent black cloth

Audio Specifications

  • Tweeter: 1 in. aluminum oxide dome
  • Midrange/Midbass: 5.25 in. BDSS with Linear Response Waveguide
  • Frequency Response (-10dB): 81 Hz–30 kHz
  • Frequency Response (-3dB): 130 Hz–27 kHz
  • Nominal Impedance: 4Ω (8Ω compatible)
  • Sensitivity: 90dB (2.83V/1m)
  • Recommended Amplifier Power Rating: 25-100W

Certifications and Compatibility

  • Certifications: Dolby Atmos
  • Compatible with: DM80 and DM70 speakers

Warranty and Support

  • Warranty: 5 years

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