Samsung M7 User Manual page 53

Test and adjust speaker volume and press done.
3
notes
9 The Surround Sound mode will be updated soon.
9 If the audio source is in 2-channel format, sound will be produced only through the speakers that
correspond to Front Left and Front Right.
9 If the network connection is not stable, Surround Sound Mode may be cancelled automatically.
9 When setting Surround Sound Mode, setting speakers of equal output power as both Front Left and
Front Right is recommended.
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