Korg Opsix Owner's Manual page 68

FM MATRIX
This sets how the Operators connect to each other and how strongly they connect.
The rows show how the Operators are lined up, and the columns show whether they send their
signals to other Operators. For instance, op1 is shown in the leftmost column. The six dots shown
from top to bottom show the signal feed level going from Operator 1 to Operators 1–6. Increasing
the signal feed will make the dots bigger.
The lowest row shows whether the Operator itself will output to the filter of the next row. " Ô "
indicates that it will output, and "X" indicates that it will not output.
x->y (OPx -> OPy)
This sets the modulation signal level sent from OPx to OPy. Setting this to 100% will set the same
level as when the preset algorithm is connected.
SELF (OPx Self Feedback)
This sets the size of the modulation signal that OPx send to itself. This will have the same effect as the
FB (Feedback) parameter when the Operator mode is "FM", but this can be used in other modes
besides FM.
DIRECT OUT
OPx (OPx Direct Out)
When this is on, the OPx output signal will be outputted as audio.
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