Yamaha Electone EL-87, Owner'S Manual

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3
Turn off Operators 1 and 2, and turn on Operators 3 and 4.
Make some changes to their parameters, as you did with
Operators 1 and 2 in steps #1 and #2 above. Set the OL of the
Operator 3 to 110.
About the Operators
Changing the level of one of the top row Operators (2 and 4 here)
affects the tone of the Operator below it.
Changing the level of one of the bottom row Operators (1 and 3)
affects the volume of the related top row Operator.
Adjust the RR (Release Rate) parameter.
Play a note on the keyboard and then release it. Notice how the
changes affect the tail end of the sound, just after you release
the key. By changing this parameter, you can make the sound
sustain beyond the release point (lower settings).
2
Keeping Operator 1 on, select and turn on Operator 2, then
adjust the Operator level.
Adjust the OL (Output Level) parameter.
Use the Data Control buttons below OL (Output Level) to
change the level of Operator 2. Notice that the volume of the
sound doesn't change, but the tone does. Increasing the level of
one of the top row Operators generally makes the tone of the
Operator below it brighter or more metallic. Decreasing the
level has the opposite effect.
N O T E :
No sound will be produced nor will
adjusting the top row Operators have any
effect if all of the bottom row Operators
have been turned off or set to their
minimum level. Be sure to turn on the
bottom row of Operators and set them to
a suitable level before changing the
parameters of the top row Operators.
N O T E :
Raising the OL of the Operator 2 to make
the sound brighter and lowering the AR
of the Operator 2 can produce a distinctive
effect.