Sony KDL-70X830B - Manual (Page 120)

For details on how to set up the Wireless Subwoofer, refer to the
instruction manual supplied with the Wireless Subwoofer.
Steps
1.
Press the HOME button, then select [Settings].
2.
Select
[Sound] → [Wireless Subwoofer].
Available Options
The recommended values for your TV have already been set.
[Subwoofer Level]
Adjusts the volume level of the Wireless Subwoofer.
[Cut Off Frequency]
Adjusts the cut off frequency of the Wireless Subwoofer. All frequencies
below the cut off frequency are output to the Wireless Subwoofer
instead of the TV speakers.
[Phase]
Sets the phase polarity.
Select the setting based on your preference.
[Power]
Sets the power control method of the Wireless Subwoofer.
When you do not use the Wireless Subwoofer, select [Off].
You can also set this option using the Options menu.
[Reset]
Resets the Wireless Subwoofer settings to their initial values.
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