Yamaha MusicCast YSP-5600 Guide De Référence Rapide page 18

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3D SURROUND
SURROUND
18 d Playback
En
Playback with 3D surround sound
In addition to 5-channel sound beams used for surround sound
playback in the horizontal direction, surround sound can be heard
from above by directing two sound beams (from height channels)
upward and reflecting them off the ceiling. Compared to surround
sound playback in only the horizontal direction, this gives the
sound field (spatial expression with sounds) a greater sense of
immersion and reality.
Sound beams in the horizontal direction
Sound beams output from height channels
Channels created from the front and rear sound
beams
1
Press the 3D SURROUND key to switch to 3D
surround mode.
"3D SUR." is shown in the front panel display.
3D SUR.
Playback with surround sound
5-channel sound beams create a sound field for surround sound
playback without using height channel sound beams.
Sound beams
Channels created from the front and rear sound
beams
1
Press the SURROUND key to switch to surround
mode.
"SURROUND" is shown in the front panel display.
SURROUND