Definitive Technology Ultra-Slim On-Wall Passive Sound Bar - Mythos 3C-75
Dsecription :
The Mythos 3C-75 ultra-slim, on-wall passive sound bar for 75”-class TVs elevates your home theater experience with premium sound and designer aesthetics in an adjustable-width, weather-protected enclosure.
- Adjustable-Width for 75” 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

XTDD Drivers for spacious,dyanmic sound in evry 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.
Aluminium oxide Dome Tweeters for exceptional defination 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
3C-75’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 75”-class displays, for a cohesive look.
Slim Profile and adjustable Width for a streamlined apperance
3C-75’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 75”-class displays, for a cohesive look.
Accoustically Optimized Cabinet for Pristine sonic reproduction
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-75 on its own or with a Descend subwoofer for larger-than-life sound in a low-profile, all-in-one system.
Specifications | |
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Dimensions (H x D) | 6.25 x 1.87 in. (159 x 47.5 mm) |
Adjustable width (W) | 65.8 ~ 69.2 in. (1671 ~ 1758 mm) |
Symmetrically adjustable extensions | 3.42 in. (87 mm) |
Weight | 20 lbs (9.3 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 |
Features | |
Recommended amplifier power | 25-150W per channel |