Sony WEGA KE-42MR1 Operating Instructions Manual page 29

Dual Sound Mono/Stereo
For a stereo broadcast, select Stereo or Mono.
Mono/A/B
For a bilingual broadcast, select A for sound channel 1, B for sound
channel 2 or Mono for a mono channel if available.
i Speaker Link On/Off
Select to control the sound output of the TV's speakers when
headphones are connected. If you want both the sound of the
headphones and the TV's speakers, select Off.
i Volume Press
Press
If you set "i Speaker Link" to "On," i Volume cannot be adjusted.
i Dual Sound Select Dual Sound option of the headphones.
Mono/Stereo
For a stereo broadcast, select Stereo or Mono.
Mono/A/B
For a bilingual broadcast, select A for sound channel 1, B for sound
channel 2 or Mono for mono channel if available.
If you set "i Speaker Link" to "On," i Dual Sound cannot be adjusted.
Reset Cancel/OK
Select OK to reset the sound to the factory preset.
or to turn the volume of headphones down.
or to turn the volume from headphones up.
GB
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Menu System