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1. Features of the Pedal Inputs
• Support for almost all types of expression pedals and damper pedals of different
technology and connector pin-outs. Further, many model-specific pedal presets can be
selected for optimized performance.
• Support for "Control Voltage" as additional type of controller.
• Auto-Ranging to fully use the available electrical travel of a pedal.
• Auto-Hold to de-noise and stabilize the controller output.
• Controller parameters (like current Auto-Ranging internal settings) are continuously
saved, and re-loaded after power-up.
2. Quick Start
1. If the pedal has a detachable cable, then first connect a suitable cable to the pedal. If
the pedal has a "minimum volume" setting adjust (like many Roland and Boss models
do), set it to the fully counter-clockwise position.
2. Connect the pedal cable to the C15 at one of the TRS Sockets numbered "Pedal 1...4".
The C15 may already be powered on or off, it does not matter. If on, try to insert the
cable quickly into the TRS socket (in less than 1 second).
3. Go to "Setup > Device Settings > Pedals" and select the proper type for the pedal from
the pedal presets list. If your pedal is listed explicitly then please use that setting.
Otherwise, try the generic "Pot, Tip-Active" (also known as Boss/Roland pin-out) or
"Pot, Ring-Active" (Yamaha pin-out) presets.
4. Do the Auto-Ranging cycle: Move the pedal to one end stop of its mechanical travel,
wait a moment (1 second), then move it to the other end stop, wait a moment.
5. Check if the position indicator in the Pedal Editor screen moves evenly and over the
whole range of 0%...100% when operating the pedal over the complete travel. When
using one of the generic "Pot" settings and you find that the approximate "center"
position gives a way too high (or too low) reading, try the corresponding generic pedal
presets with the swapped pin-out (swap "tip active" with "ring active").
6. During operation, when you find that the pedal does not move over the complete
0%...100% range anymore, reset the Auto-Ranging by temporarily selecting another
pedal type. Alternatively, you can pull the cable from the TRS socket and re-plug it.
C15 - Pedal Manual
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Related Manuals for NONLINEAR LABS C15
Summary of Contents for NONLINEAR LABS C15
- Page 1 2. Connect the pedal cable to the C15 at one of the TRS Sockets numbered “Pedal 1...4”. The C15 may already be powered on or off, it does not matter. If on, try to insert the cable quickly into the TRS socket (in less than 1 second).
- Page 2 3. List of Pedal Presets Name / Type Remarks Generic 3-Wire Expression/Damper Pedal, Tip-Active (“Roland” pin-out). Pot, Tip-Active If there is a “min” control, set it fully counter-clockwise. Continuous If there is a “range” control, set it fully clockwise. Auto-Ranging dead-zones: 5%, 5%. Auto-Hold strength: medium. Generic 3-Wire Expression/Damper Pedal, Ring-Active (“Yamaha”...
- Page 3 Name / Type Remarks 3-Wire Expression Pedal, Tip-Active. E:Boss EV-30 Set “min” controls to fully counter-clockwise. Continuous For direct reverse action, use output “EXP2” set to “INV”. Auto-Ranging dead-zones: 1%, 2%. Auto-Hold strength: medium. 3-Wire Expression Pedal, Tip-Active. E:Boss FV-500L Set “min”...
- Page 4 TRS or TS plug, with the sleeve being the “ground reference”. The ring contact is not used. • Switch on the C15 first, then the CV source. For switch-off, reverse that order, that is, switch off the source first, then the C15.
- Page 5 6. Usage 6.1 Auto-Ranging of the pedal travel After a pedal has been plugged in while the C15 is running, or after selecting a different pedal preset, most pedal presets require an Auto-Ranging cycle where the available electrical travel produced by the pedal is measured and used for the corner points. Note that until a reasonable range of movement has been detected the pedal will not produce any output signals.
- Page 6 “Pot, Tip-Active”, then select “Pot, Ring-Active”, and vice versa. On the other hand, a unique feature of the C15 is that a pedal generally keeps working even when selecting the wrong pin-out, you just get a somewhat skewed characteristic of output values vs.
- Page 7 There are two ways to reset the Auto-Ranging: • unplug and re-plug the pedal, at the C15 side (and note the need for the re-plugging procedure be finished in less than one second), while the C15 is running. • or simply select a different pedal preset temporarily, then select the original pedal preset again.
- Page 8 The C15 has pedal presets to handle either type correctly. All continuous pedal presets of the C15 use both the Auto-Ranging and Auto-Hold feature (see Auto-Ranging and Auto-Hold feature descriptions). There is no output from the pedal source until the Auto-Ranging has completed which requires that the pedal is moved across at least some fraction of its total travel.
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Page 9: Features Explained
Warning: The voltage range of the CV source must be within 0V...+5V. Never connect sources with other output ranges (like -5V...+5V, 0V...+10V, etc) as they might damage the C15, regardless of selected pedal preset. Also, do not apply a control voltage while the C15 is switched off. - Page 10 The C15 is designed so that all pedals will always actually reach the full value output from 0% to %100 regardless of the above short-comings and almost regardless of any setting of additional minimum and range control knobs found on the pedal.
- Page 11 On the other hand, when the user really operates the pedal the value should track what the user “meant” no matter how minute the changes are as long as they look reasonable. Therefore, a compromise solution is needed and this is the C15’s intelligent automated track-and-hold.
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Page 12: Troubleshooting And Tips
C15 is sensing on the wrong pin). Check it the plug is inserted fully in to the C15. Check if the cable itself is not broken. Set any “minimum” knobs to fully counter-clockwise, and any “range” knobs fully clockwise. - Page 13 It’s possibly time to redo the Auto-Ranging as some characteristics of the pedal have changed which the C15 could not track, like a re-adjusted “minimum” level control on the pedal. Unplug and re-plug the pedal at the C15 or select a different pedal preset tempo- rarily, then auto-range the pedal again.
- Page 14 TRS jack to close the internal electrical circuit, for those only use a 2-wire cable with TS-plugs on both ends and the cable must first be connected to the switch before plugging into the C15, otherwise the function might not work properly and the input might even be damaged.