Definitive Technology Mythos 3C-65

The Mythos 3C-65 three-channel passive sound bar elevates home theater experiences indoors and in covered outdoor areas. Combining the three front channels of a home theater system in a single cabinet, this ultra-slim, on-wall, two-way speaker blends high-performance sound and designer aesthetics in a weather-protected, adjustable-width rigid aluminum enclosure.

  • Audiophile Appeal
  • Designer Style
  • Ideal for Outdoor Use


Eleven-Speaker Array for powerful, accurate sound

A two-way, 11-driver system comprises two XTDD 3.5” mid/bass drivers and one 1” aluminum oxide dome tweeter for each left/right channel; the center channel features four XTDD 3.5” midrange drivers and one 1” aluminum oxide dome tweeter. Together they project robust, full-range sound over a wide area.


XTDD Drivers for spacious, dynamic sound in every seat

Ultra-stiff anodized aluminum dome woofers and midrange drivers eliminate break-up and broaden dispersion for crisp, clear sound and a spacious, enveloping soundstage.


Aluminum Oxide Dome Tweeters for exceptional definition and realism

Rigid, well-damped Dymension™ Series tweeters deliver smooth extended response, crisp transients, and pin-point imaging for cohesive, lifelike sound that draws you inside the action.


Precision Crossovers for dynamic, balanced response

Meticulously tuned crossovers optimize systems for the most efficient driver performance. You’ll experience richer, fuller, sound—the kind you’d expect from full-sized speakers.


Slim Profile and Adjustable Width for a streamlined appearance

3C-65’s ultra-slim, wall-mount cabinet measures less than 2” deep; symmetrically adjustable extensions expand up to 3.5” to perfectly align with the dimensions of 65”-class displays, for a cohesive look.


Acoustically Optimized Cabinet for pristine sonic reproduction

A highly rigid, tuned, aircraft-grade aluminum enclosure houses an 11-speaker array, with each channel in its own acoustic chamber. You’ll experience the truest sound, uncolored by cabinet resonances.


Luxury Finishes and Sharp Styling for elevating any living space

With clean, modern aesthetics; refined anodized aluminum finishes; and VESA mount compatibility (VESA and wall-mount brackets included); this sleek, wall-mount sound bar presents a streamlined appearance under your TV.


IP66-Rated Protection for security in the elements

IP66-rated protection against dust and high-pressure water streams means you can enjoy stunning home theater sound indoors and in covered outdoor areas.


Timbre-Matching for uniform voicing in any configuration

Consistent sound across Definitive Technology models gives you the flexibility to mix and match speakers to build the ultimate system or a starter system that can expand as your needs grow.


All-In-One Sound Bar Big sound in an ultra-slim cabinet

Use a Mythos 3C-65 on its own or with a Descend subwoofer for larger-than-life sound in a low-profile, all-in-one system.


Simple Surround Sound all around you

Combine a Mythos 3C-65 with Dymension on-wall speakers and a Descend subwoofer to fill the room with spacious, enveloping sound without filling the room with bulky speakers.


Total Immersion A 360-degree soundstage

Add Dymension on-wall speakers, Dymension CI in-ceiling speakers, and a Descend subwoofer to build the ultimate Atmos system.

Dimensions (H x D)159 x 48mm (6.25″ x 1.87″)
Adjustable Width (W)1435 x 1524mm (56.5″ x 60″)
Symmetrically Adjustable Extensions86mm (3.4″)
Weight7.8kg (17 lbs)
Color / MaterialBlack anodized aluminum
Grille MaterialMicro-perforated powder-coated steel
Tweeter3x 1″ aluminum oxide dome
Woofer8x 3.5″ XTDD aluminum dome
Number of Channels3 (left,center,right)
Frequency Response100 Hz–25 kHz (-10dB)
120 Hz–20 kHz (-3dB)
Nominal Impedance4Ω (8Ω compatible)
Sensitivity88dB (2.83V/1m)
Recommended Amplifier Power80W
IP Rating (Ingress Protection)IP66
Included Accessories2x VESA-mount brackets and spacers
1x Wall-mount bracket