Yamaha YAS-70 Owner's Manual page 28

Adjusting the virtual speaker settings
■ Adjusting the position of the virtual surround speakers
This system employs the Yamaha Air Surround system that enables the surround sound field using the center system and
the subwoofer/system control. This system creates the surround sounds by using the reflections on the walls of your
listening room. Use this feature to achieve the ideal surround sound.
y
To reset the volume level and the beam angle of all virtual speaker channels to the factory settings, press INPUT on the front panel while
a test tone is output.
(Left surround virtual speaker
First reflection point
y
Adjust the angle so that the first reflection point is located posterior to the listening position and the sound of surround speaker channel
audio reaches the listening position after reflections.
24
En
BEAM L
angle setting)
1,3
2
Center system
Virtual surround speaker
positions
Press TEST to activate the speaker test mode.
1
This system outputs test tones.
Press L or R repeatedly to select the desired angle
2
setting of the left or right surround virtual speaker
channel.
"BEAM L" or "BEAM R" and the angle setting appears in
the front panel display.
Choice: 20º, 30º, 40º, 50º, 60º
BEAM L
Selected virtual surround
speaker channel
Press TEST again to exit from the speaker test
3
mode.
y
This system automatically returns to the speaker balance setting mode
after a few seconds that you perform the operation of step 2.
BEAM R
(Right surround virtual speaker
angle setting)
Listening position
First reflection point
40
Current angle setting