Param, Adjust, Source – Kurzweil Forte User Manual
Page 198: Param -4 adjust -4 source -4

The Effects Chain Editor
The MOD Pages
8-4
Param
The Param parameter selects which parameter of the specified box’s effect will be modulated.
Adjust
The Adjust parameter sets a fixed value for the specified parameter (Param) that is applied
before any modulation.
Source
The Source parameter determines the Control source that will modulate the parameter
(Param) value in real-time.
When the Source field is selected, you can quickly assign one of the Forte’s physical
controllers (sliders, mod wheel, pedals, etc.) by holding the Enter button and moving the
desired controller. The MIDI CC number associated with that controller will be selected. You
can also enter a CC number for external MIDI control, or select one of the Chain-specific
Control sources (FXLFOs, FXASRs, and FXFUNs).
When a MIDI CC number is selected for the Source field, a Chain info entry will be created
on the INFO page (unless that CC number is already used by another FX Mod). See the
section below for details.
If you have selected a MIDI CC number or Forte physical controller, the FX Mod will
appear on the program Parameters page (unless that CC number is already used by another
FX Mod, in which case it will share the existing Parameter using that CC number or physical
controller). The program Parameters page allows you to set a default value for the FX Mod,
and also lets you select a different MIDI CC number or Forte physical controller if desired.
This is useful for changing the control source of existing FX Mods without editing the chain.
Note:
In some cases when entering a MIDI CC number, the source field will show the
standard MIDI name associated with that MIDI CC number. Note that the standard MIDI
names for CC numbers 15-19 and 80-83 are Ctl A through Ctl H, but these are unrelated to
Slider A though Slider H.
In Program Mode the Forte’s physical controllers each use one of the available MIDI
CC numbers, so you must choose one of the other available CC numbers when using an
external MIDI control source or else the parameter will also be controlled by a Forte physical
controller. The list below shows the available MIDI CC choices for the source field. MIDI
CC numbers associated with the Forte’s physical controllers are highlighted in bold type.
Some MIDI CCs are also hard wired to control certain program parameters or functions
such as MIDI 5 (Portamento Time), MIDI 7 (Program Volume), MIDI 10 (Pan), MIDI 11
(Expression/Program Volume), MIDI 64 (Sustain), MIDI 66 (Sostenuto), so if you use one
of these numbers the CC will always perform the hard wired function, in addition to any
other assignment you make.