Description
Definitive Technology Mythos 3C Ultra-Slim On-Wall Passive Sound Bar
The Definitive Technology Mythos 3C-65 Ultra-Slim On-Wall Passive Sound Bar is engineered to elevate TV audio with clarity and presence while maintaining a sleek, minimalist profile that complements modern home entertainment setups.
Designed specifically for 65″, 75″ & 85″ class displays, its ultra-slim enclosure houses high-performance drivers that deliver balanced sound across dialogue, music, and effects without overpowering the visual aesthetics of your space. The passive design integrates cleanly with existing AV receivers or amplifiers, making it a flexible choice for both simple and more advanced audio systems.
Beyond its sound quality, the Mythos 3C emphasizes ease of installation and integration. Adjustable mounting hardware allows for straightforward placement on the wall below your TV, and its wide frequency response helps ensure voices and on-screen action feel natural and engaging.
Whether you’re watching movies, streaming shows, or listening to music, this sound bar brings enhanced depth and detail to your entertainment without the bulk of traditional speaker systems.
View Specifications >> View Definitive Technology Products >>
Features
- Adjustable-Width for 65″, 75” & 85″ Class TVs
- Less Than 2″ Deep
- Three-Way, 13-Driver Array
- 3.5″ XTDD Drivers & 1″ Aluminum Oxide Dome Tweeters
- Wall-Mount Options (VESA Compatible)
- IP66-Rated
Audiophile Appeal
Premium Definitive Technology acoustics in a designer- inspired, adjustable-width enclosure.
Designer Style
Sleek, low-profile designer cabinet adjusts to match television dimensions.
Ideal for Outdoor Use
Weather-resistant, IP66-rated construction ensures reliable performance, indoors and in covered outdoor environments.
Premium Sound, Designer Aesthetics
- Ultra-stiff anodized aluminum dome woofers and midrange drivers eliminate break-up and broaden dispersion for crisp, clear sound and a spacious, enveloping soundstage.
- 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.
- 3C’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″, 75” & 85″ – class displays, for a cohesive look.
- 3C’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″, 75” & 85″ – class displays, for a cohesive look.
- A highly rigid, tuned aircraft-grade aluminum enclosure houses a 13-speaker array, with each channel in its own acoustic chamber. You’ll experience the truest sound, uncolored by cabinet resonances.
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 for big sound in an ultra-slim cabinet
Use a Mythos 3C on its own or with a Descend subwoofer for larger-than-life sound in a low-profile, all-in-one system.
Specifications
Size – 65″
- Dimensions (H x D): 6.25 x 1.87 in. (159 x 48 mm)
- Adjustable width (W): 56.5 ~ 60 in. (1435 ~ 1524 mm)
- Symmetrically adjustable extensions: 3.4 in. (86 mm)
- Weight: 17 lbs (7.8 kg)
- Color/Material: Black anodized aluminum
- Grille material: Micro-perforated powder-coated steel
- Tweeter: (3) 1 in. aluminum oxide dome
- Woofer: (8) 3.5 in. XTDD aluminum dome
- Number of channels: 3 (left, center, right)
- Frequency response: 100 Hz–25 kHz (-10dB)
120 Hz–20 kHz (-3dB) - Nominal impedance: 4Ω (8Ω compatible)
- Recommended amplifier power: 25-150W per channel
- Sensitivity: 88dB (2.83V/1m)
- IP rating (Ingress Protection): IP66
- Warranty: 5 year
- Included accessories: (2) VESA-mount brackets and spacers
(1) Wall-mount bracket
Size – 75″
- Dimensions (H x D): 25 x 1.87 in. (159 x 47.5 mm)
- Adjustable width (W): 8 ~ 69.2 in. (1671 ~ 1758 mm)
- Symmetrically adjustable extensions: 42 in. (87 mm)
- Weight: 20 lbs (9.3 kg)
- Color/Material: Black anodized aluminium
- Grille material: Micro-perforated powder-coated steel
- Tweeter: (3) 1 in. aluminum oxide dome
- Midrange: (2) 3.5 in. XTDD aluminum dome
- Woofer: (8) 3.5 in. XTDD aluminum dome
- Number of channels: 3 (left, center, right)
- Frequency response: 100 Hz–25 kHz (-10dB)
120 Hz–20 kHz (-3dB) - Nominal impedance: 4Ω (8Ω compatible)
- Sensitivity: 88dB (2.83V/1m)
- Recommended amplifier power: 25-150W per channel
- IP rating (Ingress Protection): IP66
- Warranty: 5 year
- Included accessories: (2) VESA-mount brackets and spacers (1) Wall-mount bracket
Size – 85″
- Dimensions (H x D): 6.25 x 1.87 in. (159 x 48 mm)
- Adjustable width (W): 72.8 ~ 79.5 in. (1849 ~ 2019 mm)
- Symmetrically adjustable extensions: 6.25 in. (159 mm)
- Weight: 22 lbs (10.1 kg)
- Color/Material: Black anodized aluminum
- Grille material: Micro-perforated powder-coated steel
- Tweeter: (3) 1 in. aluminum oxide dome
- Midrange: (2) 3.5 in. XTDD aluminum dome
- Woofer: (8) 3.5 in. XTDD aluminum dome
- Number of channels: 3 (left, center, right)
- Frequency response: 100 Hz–25 kHz (-10dB)
120 Hz–20 kHz (-3dB) - Nominal impedance: 4Ω (8Ω compatible)
- Sensitivity: 88dB (2.83V/1m)
- Recommended amplifier power: 25-150W per channel
- IP rating (Ingress Protection): IP66
- Warranty: 5 year
- Included accessories: (2) VESA-mount brackets and spacers
(1) Wall-mount bracket
