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Definitive Technology Mythos XTR On-Wall Speaker
Definitive Technology Mythos XTR On-Wall Speaker 0
Definitive Technology Mythos XTR On-Wall Speaker 1
Definitive Technology Mythos XTR On-Wall Speaker 2
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Definitive Technology Mythos XTR On-Wall Speaker

Model #: XTR-40
Definitive Technology
At a Glance
Definitive Technology Mythos XTR On-Wall Speaker with anodized aluminum dome XTDD drivers and aircraft grade extruded aluminum enclosure
Available in Store Only

Get to know this product.

The Definitive Mythos XTR-40 is a high performance on-wall speaker whose depth matches that of today's ultra-thin TVs. It is a mere 1.5 inches deep when mounted on a wall, shallower than many ultra-thin TVs when they are wall-mounted with their factory sanctioned mounting hardware. Beyond its utility and clean modern styling the XTR-40 stands out due to its uncompromising sound quality equivalent to full-size speakers

The Future Has Arrived

  • Science fiction films have long featured impossibly thin video screens mounted on walls or floating in air. While the floating-in-air technology might be some time off, super shallow video screens are here now. TVs less than 2 inches thick are in stores now and more are on their way
  • If you have an ultra-thin TV you're going to want to use ultra shallow speakers that match

The Thinner the TV, the Worse the Sound 

  • Ultra-shallow TVs are the hottest category in TVs today. People love their space-saving qualities and elegant design. But it comes at a high cost—significantly poorer sound quality. The speakers in these ultra-thin TVs are small and poorly placed (usually on the bottom or on the back of the set) not even facing the listener
  • The result is sound that is good enough for news broadcasts but far from what is acceptable for sports, movies and action/adventure programming. Imagine the letdown when you return home after seeing Avatar or similar audio/visual blockbuster in a Dolby Digital cinema and turn on your TV to watch a DVD with cheap 2-inch speakers providing the sound
Revolutionary XTDD Technology Drivers
  • The secret to the XTR-40's extraordinary performance is Definitive's patent-pending XTDD technology anodized Aluminum dome driver
  • Using state-of-the-art computer modeling and decades of speaker design experience, Definitive engineers eliminated every iota of wasted space, optimized every part and maximized the moving surface area of a dynamic driver to shrink it down to an impossibly compact dimension without giving up ultra high performance audio fidelity
  • The XTDD driver has the kind of dynamic punch, wide frequency range and broad dispersion that flat vibrating membrane panel-type speakers simply cannot match
Aircraft-Grade Aluminum Enclosure Saves Space and Improves Performance
  • Another secret to the XTR-40's astounding thin profile and superior performance is its aluminum cabinet. By specially shaping the enclosure and incorporating stiffing ribs and channels, we've made the space-efficient aluminum extrusion ultra-rigid and resonance-free
  • The magnets of the XTDD drivers protrude through the rear wall of the enclosure to further minimize depth. A thermally conductive gasket seals the enclosure/magnet interface and transfers heat from the driver's rare-earth magnet to the enclosure, making the whole enclosure a giant heat dissipater! And everyone knows that a cool driver is a happy, reliable driver

Ultimate Placement Versatility

  • The XTR-40 comes supplied with everything you need to use place it wherever you want to use it
  • The XTR-40 can be mounted directly to the wall using the key-hole slots on the back of the enclosure and well-anchored screws
  • If you choose, the speaker can be wall mounted using the supplied mounting bracket that allows either vertical or horizontal orientation with a total installed on-wall depth of only 40mm. Two adjustable support feet are supplied in cases where you place the XTR-50 on a shelf as a center channel speaker (horizontal orientation)
  • For vertical shelf or table top placement the XTR-50 comes with a beautiful tempered smoked glass base. Whether you're mounting it on wall or on shelf, as Left and Right, Center or Surround channel speakers the Mythos XTR®-50 is ready to look terrific and sound astounding

Warranty Information

  • Electronic components- 3 Years Parts and Labor
  • Drivers and Cabinet- 5 Years Parts and Labor

Included Accessories

  • 2 - Horizontal Level Adapter
  • 2 - Horizontal Leveler Foot
  • 2 - Bumpers
Useful Documents


Connector Type:1 (Proprietary Connector Block; Included)


Enclosure Type:Aircraft Grade Extruded Aluminum
Midrange Size:3.5" x 2
Midrange Composition:Anodized Aluminum
Bass Size:3.5" x 2


Crossover Type:Small (120 Hz)


Sensitivity:92 dB

Misc. Specs

Product Weight (lbs.)5.1
Depth (in.)1.5
Width (in.)6
Height (in.)23.25
Impedance8 ohms
RMS Power Handling (Watts)100
Speaker TypeOn-Wall Speakers
Number of Speakers1
Manufacturer Warranty3 Year Parts & Labor
Maximum Power Handling (Watts)100
WarningProposition 65 Warning for California Residents