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Definitive Technology Mythos XTR-40 Ultra-Slim On-Wall Loudspeaker- Black

Model #: Mythos-XTR-40


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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.


• Perfect for use with ultra-shallow TVs 40-inch class and larger.
• Only 1.5 inches (38mm) deep.
• Wall mount bracket included.
• The dynamic punch, wide frequency range and broad dispersion of full size speakers.
• Aircraft grade extruded Aluminum enclosure.
• Anodized Aluminum dome XTDD drivers.
• Pure Aluminum dome tweeter.


Driver Complement
Quantity 1
Diameter 1" (2.54cm) 
Type Pure Aluminum Dome
Mid / Woofer
Quantity 2
Diameter 3 1/2" (8.89cm)
Type XTDD Anodized Aluminum Mid/Bass Dome Driver
Tweeter/Mid Array
Type Direct Radiating D'Appolito
Bass Radiator
Quantity 2
Diameter 3 1/2" (8.89cm) 
Type Anodized Aluminum Domed Bass Radiator
Audio Inputs
Speaker Level 1 (Proprietary Connector Block; Included)
Maximum Sensitivity
1 watt @ 1 Meter 92 dB
Total Frequency Response
Overall 100 Hz - 30 kHz
Nominal Impedance
Compatible with 8 ohm
A/V Receiver Crossover Setting On Wall: Small (100 Hz) 
A/V Receiver Crossover Setting On Shelf: Small (120 Hz) 
Power Handling 20 - 100 watts per channel
Horizontal Orientation On Wall or On Shelf
Vertical Orientation On Wall or On Shelf
Product Weight
Out of Box 5.1 lbs
Cabinet Dimensions
Height 23 1/4" (59.05cm) 
Width 6" (15.24cm) 
Depth 1 1/2" (3.81cm)
Cabinet Type
Speaker Enclosure Aircraft Grade Extruded Aluminum
Included Accessories Horizontal Level Adapter (2); Horizontal Leveler Foot (2); Bumpers (2); PureFlat Wall Mount; Connector Block; Wall Mounting Template; Magnetic Logo
Optional Accessories ProMount 90 (Articulating Mount, 1 Pair per XTR 40; Not Included)
Carton Size
Height 11 1/4" (28.57cm) 
Width 27 1/2" (69.85cm) 
Depth 5 1/4" (13.34cm)
Shipping Weight
One per Carton 8.5 lbs
Drivers and Cabinet
Parts and Labor 5

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