Yamaha DX7 II FD Reference Manual page 36

Total volume
Balance
The voice mode parameter allows you to combine different voices in various ways. For
example, the right side of the keyboard could be used to play a piano voice while the left
side plays a bass voice in split mode. Dual mode allows you to combine or layer sounds
such as two different components of a complex sound.
The next two parameters appear in the same LCD display. The total volume parameter
provides control over the total volume of a performance configuration.
0 Total volume is 0 (no sound will be heard at all).
99
Total volume is at maximum.
This allows you to obtain similar volume levels for all performance configurations.
The volume balance between voices A and B in the dual and split voice modes
is adjusted
with this parameter. It does not appear if the single voice mode is selected.
- 50 Volume of voice A is maximum, volume of voice B is 0.
0 Both voices A and B are at their maximum volume.
+50 Volume of voice B is maximum, volume of voice A is 0.
The diagram below illustrates the relationship between the parameter values and the
actual balance.
§}Voice A
r
Volume
~VoiceB
; x ; x ; x x x x x ~x.
;x~;xx
~;xxx;x;xx
~
x x ; x ; x
~
-50 0 +50
~c.........-~-----Balance
Setting
--------•!1111>' I
A value of 0 will not necessarily achieve an equal volume level between the voices. If
voice A is a "loud" sound and voice B is a "soft" sound by virtue of their respective
carrier levels, voice A will dominate if the balance is set to 0.
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