SA249 C4 Synth User Guide 42
MIDI Channel
By default, the C4 responds to MIDI Channel 1. The C4 ignores all MIDI messages sent to it that are
not on its channel. The input MIDI channel for the C4 can be changed in the Hardware Options menu
of the Neuro Editors. Note that the MIDI Input Channel is a global setting that is NOT saved per
preset. Note that some manufacturers begin counting MIDI channels at zero (from 0 to 15), while the
Source Audio Neuro Editors use the convention of counting from 1 to 16.
The C4 Synth and the Neuro Hub
Currently the C4 Synth cannot receive MIDI Program Changes (PC) and change presets via the Neuro
Hub – PC messages can only come through the C4’s USB port. However, the C4 can receive MIDI CC
messages through a Neuro Hub connection.
Custom MIDI CC Mapping
The C4 Synth has very few default MIDI mapping - MIDI CC messages must be mapped with the
Neuro Desktop Editor. Custom MIDI CC mappings are global; they will apply in all situations,
regardless of which preset is active.
To create a custom MIDI CC mapping, follow these steps:
1. Connect your C4 to the Neuro Desktop Editor.
2. In the top bar menu select Device > Edit Device MIDI Map from the dropdown menu.
3. The C4 Synth MIDI Map Editor window will open. Scroll to the MIDI CC value you wish to map
and select that CC’s dropdown menu. A list of parameters will unfold.
4. Select the parameter you wish to assign to the chosen CC. The process is complete.
The C4 comes with certain functions and parameters pre-mapped. The following table lists the
current MIDI mapping:
For parameters like Mix and Level, which are normally controlled by knobs, the full range of
continuous control values from 0 to 127 will be mapped to the range of the knob.
For the engage/bypass footswitch, continuous control values in the range of 0-63 will bypass the C4
and values in the range of 64-127 will enable the pedal.
Any MIDI CC, from 0 to 127, can be mapped to a control on the C4.
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