Yamaha PortaTone PSR-550 Owner's Manual page 52

Digital Effects
Adjusting the Harmony/Echo volume
The volume of the Harmony/Echo sound in relation to the keyboard sound can be
adjusted as follows:
1 4
-
Use the same operation as in "Selecting a Harmony/Echo
Type" (page 50).
5
Press the [NEXT] button to display the Type Selection screen.
6
Press the [NEXT] button to display the Harmony/Echo Volume
screen.
7
Adjust the Harmony/Echo volume.
Use the data dial, the [+/YES] button, the [-/NO] button or the number buttons
[1]-[0].
The volume range is from 0 (no sound) to 127 (maximum volume).
52
• When the Voice Set function
is on (page 120), the
Harmony/Echo Volume may
change according to the
selected R1 panel voice.
• Changing the volume of the
harmony sound may not
produce audible effect for
some R1 voices (ex. organ
sounds) when you select
Harmony types "Duet"
through "Strum".