DRAGON / Device Settings / Set-top Boxes/Satellite/Cable
Set-top Boxes / Satellite / Cable
Step-by-Step Instructions for Best Experience (Dragon 11.4.6)

Reference Model: Xfinity (Old Version)
Select the User Interface below that matches your device:
STEP-BY-STEP GUIDE:​

Connect Device's HDMI OUT to TV's HDMI Input with a HDMI-certified High-Speed 2.0 cable.
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For streaming apps with Dolby Atmos surround, Xfinity X1 outputs the audio signal in Dolby Atmos MAT format.
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Not all TV channels are broadcasting in Dolby Digital audio format. Refer to your channel info for more information.
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It is reported that the Xfinity X1 may experience sound skipping with Dolby Digital audio. It is recommended to set to Stereo output if you are experiencing such behavior. Xfinity Community Forum >
Click on the arrow button at the sides of the image to go forward/backward for settings. (Click on image to enlarge)
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Sequence:
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Press “MENU” on your remote
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Arrow down to “Settings&Help” and press “SELECT”
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Make sure that “Settings” is highlighted and press “SELECT”
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Arrow down to “Audio” and press “SELECT”
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Arrow down to “Dolby Digital” and press “SELECT”
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You will see a dropdown. Use the arrows to highlight “Off” and press “SELECT”
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Press “EXIT” to return to live TV

Press the INFO button on DRAGON remote control to verify the audio format received on DRAGON (Dolby/DTS audio for best audio)