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Difference between revisions of "Expression pedals and external switches"

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=Remote control of Fractal Audio devices=
  
−
[[image:Ev-1-both.png|link=|125px]] [[image:switches.png|125px|link=]] [[image:MIDI.png|link=]] [[image:FC6-top.jpg|125px]] [[image:GT22_Overhead_WEB.jpg|185px|link=]]
+
Fractal Audio's processors can be remotely controlled in various ways. This includes the use of <q>expression pedals</q> such as Fractal Audio's EV-1 and EV-2 pedals, (see below) and/or <q>external switches</q>, either connected directly to a pedal port on the device, to a MIDI controller or to Fractal Audio's [[Fractal Audio FC-6 and FC-12]].
  
−
=Remote control of Fractal Audio's processors=
+
The number of ports, as well as support for a single switch or dual switch, varies per product.
  
−
Fractal Audio's hardware processors can be remotely controlled in various ways. The possibilities depend on the processor.
+
Read the following pages for more information:
 +
* [[Fractal Audio_Axe-Fx_III,_FM9_and_FM3#Pedal_ports|Axe-Fx, FM3, FM9]]
 +
* [[Fractal_Audio_VP4#Pedal_ports|VP4]]
 +
* [[Fractal Audio FC-6 and FC-12]]
  
−
Options:
+
=Fractal Audio EV-1 and EV-2 expression pedals=
  
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* onboard switches: FM3, AX8, FX8
+
Read this: [[Fractal Audio EV-1 and EV-2]]
−
* Fractal Audio's [[Editors]]
 
−
* [[MFC-101 MIDI foot controller]] or [[FC-6 and FC-12 foot controllers]]
 
−
* [[FracPad]]
 
−
* expression pedals and switches, such as the [[EV-1 and EV-2 pedals]], connected directly to the processor or to a floor controller
 
−
* [[MIDI]], for 3rd-party controllers such as the [[RJM Mastermind MIDI foot controller]]
 
−
* [[USB]], for control in a DAW etc.
 
  
−
=Expression pedals and external switches=
+
=Expression pedal=
  
−
=Modifiers and external controllers=
+
==Required specifications==
  
−
Pedals and switches can be connected directly to parameters (depending on the processor), or with a so-called External Controller or Control Switch inbetween, which operates as the source of a Modifier.
+
The requirements for an expression pedal are:
  
−
Read this: [[Modifiers, Controllers and Control Switches]]
+
* Linear resistance taper
 +
* Max resistance of 10-100 kOhm
 +
* TRS-to-TRS cable connection (<q>stereo jack</q>)
  
−
=About TRS and TS cables=
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==Connect an expression pedal==
  
−
From the [[Owners_Manuals|Axe-Fx III Owner's Manual]]:
+
From the Owners Manual:
  
−
<blockquote>"TRS” stands for TIP-RING-SLEEVE and describes the configuration of a 1/4" end plug or jack with three connectors. Normal guitar cables are “TS” (Tip-Sleeve) since they lack the ring required for a third contact. Expression pedals require TRS cables because full control voltage is transmitted to them on one contact (the tip), while less than full voltage is returned to on another (the ring) so the host device is able to sense and utilize the pedal position. The third contact (sleeve) is connected to ground."</blockquote>
+
<blockquote>
 +
<HR>
 +
<blockquote>
 +
<q>TRS</q> stands for <q>TIP-RING-SLEEVE</q> and describes the configuration of a 1/4" end plug or jack with three connectors. Normal guitar cables are <q>TS</q> (Tip-Sleeve) since they lack the ring required for a third contact. Expression pedals require TRS cables because full control voltage is transmitted to them on one contact (the tip), while less than full voltage is returned to on another (the ring) so the host device is able to sense and utilize the pedal position. The third contact (sleeve) is connected to ground.
 +
</blockquote>
 +
</blockquote>
  
−
=Using an expression pedal=
+
The expression pedal can be connected:
 +
* Directly to the device using a PEDAL port
 +
* To an FC-6 or FC-12 foot controller
 +
* To a MIDI controller that's connected to the device
  
−
==What happens if the pedal is not connected==
+
==Configure an expression pedal==
  
−
If a pedal is not connected, the device needs to know what value to use. Disconnecting a Volume pedal should not mute the device, for example. The desired initial value can be selected in the [[MIDI]] menu, through the [[MIDI#Initial_Value_External_Control|External Controller Initial Value parameter]].
+
Pedals that are connected directly to the Fractal Audio device, can be configured and calibrated on the Pedal page of SETUP. On the VP4, this is the Setup > Pedals menu.
  
−
This applies only to pedals that have been assigned to an external controller through an "external controller", not to pedals that are directly connected to the device.
+
Pedals that are connected through another connected device, such as FC-6 and FC-12 foot controllers or 3rd party MIDI controllers, must be configured in the configuration menu of that device, including calibration. For the FC controllers, use the FC controllers menu in SETUP.
  
−
==Set up a global volume pedal==
+
Always calibrate the pedal before use! This makes sure that the pedal's full sweep range is being used.
  
−
This is covered in the [[Owners_Manuals|Owner's Manual]].
+
You can assign the pedal directly to parameters in the preset. Or you can assign an [[External controller]] to that parameter, and then assign the pedal to that specific external controller. The latter option provides more flexibility.
  
−
Note: the FX8 lets you specify the exact position of the Volume control.
+
==What happens if the pedal is not connected==
  
−
==Control the wet level of effects==
+
If a parameter is controlled by a switch or pedal, and that pedal or switch is not connected when powering on the Fractal Audio device, the device needs to know what value to use. Disconnecting a pedal that operates as a Volume pedal should not mute the device, for example.
  
−
You can use an expression pedal to control the overall "wetness" (effect level of multiple/all effect blocks):
+
For parameters that have been assigned to an [[Modifiers and controllers|External controller]], the desired initial value can be set in SETUP under Initial Value.
  
−
# Connect and calibrate your expression pedal
+
Current firmware also features activity sensing for internal pedals, FC pedals and external controllers. This stops [[Auto-Engage]] from activating an effect when the pedal/controller is not connected. This prevents, for example, a Wah from being engaged when Auto-Engage is on but no pedal is connected (i.e., you left your expression pedal at home).
−
# In I/O set one of the EXTERNAL controllers to "PDL" (let's use EXT1 in this example)
 
−
# Create your preset with the reverb and delay at their most extreme (wet) settings
 
−
# Open the DELAY block for editing
 
−
# Select the INPUT GAIN parameter and press ENTER to show the MODIFIER screen
 
−
# Set the SOURCE of the modifier to EXT1. Press EXIT 2x to return to the grid
 
−
# Select the REVERB block and repeat steps 4, 5, and 6
 
−
# Save the preset
 
−
# The pedal will now blend between full wet and full dry ([http://forum.fractalaudio.com/floor-controllers-midi-cc-questions/38163-controlling-effect-wetness-using-expression-pedal.html#post522146 source])
 
  
−
==Morph between clean and dirty tones==
+
<blockquote>
 +
'''FRACTAL AUDIO QUOTES'''
 +
<hr>
  
−
[http://www.youtube.com/watch?v=5sn5Ixx_bTY Tutorial by Cooper Carter for G66]
+
<blockquote>
 +
[https://forum.fractalaudio.com/threads/controller-issue.203213/post-2540843]
 +
[…]
 +
The expression pedal inputs on the Axe-Fx and on the FC6/12 have pullup resistors. If a pedal is unplugged the value goes to 100%. This is done so that if a pedal is connected to volume and you forget your volume pedal you'll still have sound.
 +
</blockquote>
 +
</blockquote>
  
−
==Control different effects with a single pedal==
+
==Factory presets and expression pedals==
  
−
'''Method 1''' (i.e. control either Wah or Whammy):
+
Many factory presets let you use a connected expression pedal, for example as a Wah. Search the [[Factory presets]] page in the wiki for "External".
−
# Insert a Wah block.
 
−
# Insert a Pitch block, directly above or below the Wah in a parallel row. Connect it back to to the main row.
 
−
# In the Modifier menu of BOTH effects (Wah: Frequency; Pitch: Control): set Source to External 1. Enable Auto-engage.
 
−
# Add a Mixer block to the main row, just after Wah and Pitch.
 
−
# Edit Mixer: enter the Modifier menu of the Gain parameter for the row that connects to the Wah. Set Source to another external controller (which will be attached to an IA-switch to switch between Wah and Whammy). Set Start Value to 100% and End Value to 0.
 
−
# Do the same for the row that connects to the Pitch block. But: set Start Value to 0% and End Value to 100%.
 
−
# Program an IA switch to switch between Wah and Whammy, using the Mixer rows. Use the CC of the external controller that you specified while editing the Mixer block, and send "127" for the Wah, and "0" for the Whammy.
 
−
# That's all. Moving the pedal should activate both the Wah and the Pitch block. But thanks to the Mixer block you'll only hear one of these effects. If you're hearing the Wah and the Whammy effects simultaneously, you need to press the IA-switch to get the Mixer block to work
 
  
−
'''Method 2''' (i.e. control Volume and Wah): (source: Bakerman)
+
==Create a volume pedal==
−
# Place a Volume block on the grid.
 
−
# Assign an IA switch to an external controller's CC.
 
−
# Assign another external controller the Wah and Volume control knobs.
 
−
# Set the first external controller as a Bypass modifier for both blocks and reverse the slope of one (start 100, end 0).
 
−
# Now the IA switch will toggle between Wah/Volume and the pedal will control both.
 
  
−
'''Method 3''' (use scenes to switch the pedal to another effect, i.e. Wah, Whammy and Volume):
+
To set up a volume pedal in a single preset, read [[Volume/Panner block]].
−
# Put Wah and Pitch and Volume in one column (parallel).
 
−
# Assign an external controller (pedal) to the effects. Set to Auto-Engage in Wah and Pitch.
 
−
# In Wah and Pitch turn down Level in the block's Y state.
 
−
# Scene 1 is for Wah. Set Wah to X, set Pitch to Y, bypass Volume.
 
−
# Scene 1 is for Whammy. Set Wah to Y, set Pitch to Y, bypass Volume.
 
−
# Scene 3 is for Volume. Set Wah to Y, set Pitch to Y, engage Volume.
 
−
# To make this work with effcts without X/Y support, use a [http://forum.fractalaudio.com/axe-fx-ii-wish-list/77285-ring-mod-x-y.html#post954149 Scene Controller].
 
  
−
'''Method 4''' (use the Multiplexer block in firmware Ares):
+
To set up a <q>global</q> volume pedal that works across ALL presets, read the section in the [[Owners_Manuals|Owner's Manual]].
−
* Read this: [[Multiplexer block]]
 
  
−
=Using an external switch=
+
==Create a Wah pedal==
  
−
==Tap Tempo or Tuner==
+
Read [[Wah block]] for more information.
  
−
An external switch can be used for tapping [[Tempo]] or to activate the [[Tuner]].
+
==Create a Whammy pedal==
  
−
==Overrule the bypass state of effect blocks==
+
Read [[Pitch_block#Whammy|Pitch block]] for more information.
  
−
You can use an external switch to set the bypass state of an effect block, and maintain that state when switching presets.
+
==Create a Talk Box==
  
−
# Connect the switch to a pedal port
+
Read [[Formant block]] for more information.
−
# Assign that pedal to an External Controller
 
−
# Assign the Bypass Mode parameter of the effect to that External Controller (modifier menu: Source). Repeat this in each preset which you want to control
 
−
# Now the switch will control the effect's engaged/bypass state, regardless of the effect's stored state, and stay in sync
 
  
−
[https://forum.fractalaudio.com/threads/wicked-wiki-18-external-s-witchcraft.86024/ Wicked Wiki article]
+
==Control the amount of delay and/or reverb==
  
−
==Control multiple effects simultaneously with a pedal or switch==
+
You can use an expression pedal to control the amount of delay or reverb.<BR>
 +
Assign the pedal as an [[External controller]] to the INPUT GAIN parameter in the Delay and/or Reverb Block.
  
−
It's possible to use your expression pedal for multiple purposes while staying in the same preset. Suppose you have one expression pedal and you want it to use as a wah as well as a Whammy, without switching presets:
+
==Morph between clean and dirty tones==
−
# Insert a Wah block.
 
−
# Insert a Pitch block, directly above or below the Wah in a parallel row. Connect it back to to the main row.
 
−
# In the Modifier menu of BOTH effects (Wah: Frequency parameter; Pitch: Control parameter): set Source to the External controller that's attached to your expression pedal. Set auto-engage to Fast, Medium or Slow.
 
−
# Add a Mixer block to the main row, just after Wah and Pitch.
 
−
# Editing the Mixer: enter the Modifier menu of the Gain parameter for the row that connects to the Wah. Set Source to the external controller that is or will be attached to an IA-switch (which switches between Wah and Whammy). Set Start Value to 100% and End Value to 0.
 
−
# Do the same for the row that connects to the Pitch block. But: set Start Value to 0% and End Value to 100%.
 
−
# Program an IA-switch on your MIDI controller to switch between Wah and Whammy, using the Mixer rows. Use the CC of the external controller that you specified while editing the Mixer block, and send "127" for the Wah, and "0" for the Whammy.
 
−
# This is it. Moving the pedal should activate both the Wah and the Pitch block. But thanks to the Mixer block you'll only hear one of these effects. To bypass the effect hold the pedal in toe-down position. If you're hearing the Wah and the Whammy effects simultaneously, you need to press the IA-switch to get the Mixer block to work.
 
  
−
You don't have to use a Mixer block (available on the Axe-Fx only). [http://forum.fractalaudio.com/axe-fx-ii-discussion/47983-wah-block-mix-parameter.html#post625421 Here's how], or [http://forum.fractalaudio.com/other-midi-controllers/26364-wha-volume-switcher.html read this for another solution]:
+
Watch the video at the bottom of this page.
−
# Do the same as above but leave out the Mixer block.
 
−
# Set Bypass mode of one block to Thru and the other block to Mute.
 
−
# Assign an External controller (attached to a switch) to the Balance parameter in each block. Set Start Value to 100% and End Value to 0 in one block, andvice versa in the other.
 
−
# Set Input Select in Drive and Amp blocks after Wah and Pitch to Left or Right, instead of Sum L+R.  
 
  
−
[http://forum.fractalaudio.com/other-midi-controllers/36444-expression-pedal-cc-3.html Example of a preset where a single pedal controls Wah, Whammy and Volume]
+
==Display the tuner at heel down==
  
−
==Switch presets==
+
Read [[Tuner#Display_Tuner_on_heel_down|Tuner]] for more information.
  
−
You can use an external switch to switch presets. This works fine if you have just a few presets to switch between. If the processor has more than one PEDAL jack, you can assign one to increment presets and the other to decrement presets. You can also use a switch to switch scenes, see [[Scenes]].
+
==Auto-engage an effect==
  
−
==Engage or bypass an effect==
+
Read [[Auto-Engage]] for more information.
  
−
You can use an external switch to engage or bypass a specific effect. In the [[I/O menu]] assign the effect block to the switch (or pedal).
+
==Use a pedal for multiple tasks==
  
−
==Switch an effect between X/Y or switch channels==
+
You can dedicate a single expression pedal to multiple tasks, within a single preset. Below are various examples.
  
−
An external switch can be used to switch an effect between X and Y or between [[Channels]].
+
'''Control Wah or Whammy'''
 +
# Insert a Wah block.
 +
# Insert a Pitch block, directly above or below the Wah in a parallel row. Connect it back to the main row.
 +
# In the Modifier menu of BOTH effects (Wah:Frequency parameter, Pitch:Control) set Source to External 1. Enable Auto-Engage.
 +
# Add a Mixer block to the main row, just after Wah and Pitch.
 +
# Edit Mixer: enter the modifier menu of the Gain parameter for the row that connects to the Wah. Set Source to another External controller (which will be attached to an IA-switch to switch between Wah and Whammy). Set Start Value to 100% and End Value to 0.
 +
# Do the same for the row that connects to the Pitch block. But: set Start Value to 0% and End Value to 100%.
 +
# Program an IA switch to switch between Wah and Whammy, using the Mixer rows. Use the CC of the external controller that you specified while editing the Mixer block, and send "127" for the Wah, and "0" for the Whammy.
 +
# Moving the pedal should activate both the Wah and the Pitch block. But thanks to the Mixer block you'll only hear one of these effects. If you're hearing the Wah and the Whammy effects simultaneously, you need to press the IA-switch to get the Mixer block to work.
  
−
==Expand the switching options of an FC controller or the FM3==
+
'''Control Volume and Wah''' (source: Bakerman)
 +
# Place a Volume block on the grid.
 +
# Assign an IA switch to an external controller's CC.
 +
# Assign another external controller the Wah and Volume control knobs.
 +
# Set the first external controller as a Bypass modifier for both blocks and reverse the slope of one (start 100, end 0).
 +
# Now the IA switch will toggle between Wah/Volume and the pedal will control both.
  
−
Connect external switches to an FC controller or FM3 to expand their switching possibilities.
+
'''Using Scenes and channels'''
 +
# Put Wah and Pitch and Volume in one vertical column.
 +
# Assign an external controller (pedal) to the effects. Enable Auto-Engage in Wah and Pitch.
 +
# Configure channel A, then copy it to channel B.
 +
# In Wah and Pitch turn down Level in Channel B.
 +
# Scene 1 is for Wah. Set Wah to Channel A, set Pitch to channel B, bypass Volume.
 +
# Scene 1 is for Whammy. Set Wah to channel B, set Pitch to channel A, bypass Volume.
 +
# Scene 3 is for Volume. Set Wah and Pitch to channel B, engage Volume.
  
−
Read this:
+
'''Using the Multiplexer block'''
  
−
* [[FC-6 and FC-12 foot controllers]]
+
: Read [[Multiplexer block]] for more information.
−
* [[FM3 processor]]
 
  
−
=Troubleshooting=
+
'''Control Volume and Wah with an expression pedal that has a switch'''
 +
# Put the Wah and Volume blocks on the grid.
 +
# Configure both blocks to be controlled by the pedal. Set the Wah to Auto-Engage.
 +
# Attach the pedal's switch to the Bypass parameter of both blocks. Set Min/Max in the modifier menu in one block to 0/100 and in the other block to 100/0.
 +
# The switch now switches between Wah/Volume duty.
  
−
==ADC levels of the pedal ports==
+
=External switch=
  
−
The Axe-Fx III and FM3 let you to check the ADC (Analog-to-Digital Converter) levels of the pedal ports (Utility menu).
+
==Connect an external switch==
  
−
==Zipper noise==
+
The FC controllers and FM3 support a dual-button switch per port when using a TRS cable, or a single-button switch when using a TS-TS cable.
  
−
If moving the expression pedal creates choppy sounds or zipper noise, increase the Damping parameter in the Modifier menu.
+
The Axe-Fx III, FM9 and VP4 limit each PEDAL port to a single switch (TS cable).
  
−
=AxeForLemur=
+
The switch can be connected:
 +
* directly to the device using a PEDAL port
 +
* to the [[Fractal Audio FC-6 and FC-12]]
 +
* to a MIDI controller that's connected to the device
  
−
AxeForLemur is a Lemur Template designed by David Sorlien to control the Axe-Fx. The Template runs on the Lemur APP by Liine, and connects wirelessly through a logical midi connection to the AxeFx. <BR>This page is intended for users and developers of this template.
+
==Configure an external switch==
  
−
==Usage==
+
You can connect external switches to the device or to FC-6 and FC-12 foot controllers to expand switching possibilities.
  
−
AxeForLemur is a JZML script, licensed by Creative Commons to be a non-commercial, free to use script. The script runs on IOS and Android devices with the [http://liine.net/en/products/lemur/ Lemur Application from Liine]. The Lemur Application communicates with the Axe-Fx either through direct MIDI connection, or through Wifi to a Host Computer, that is connected either through USB or MIDI to the Axe-Fx.
+
External switches can perform the same tasks as "local" switches on an FC controller, FM3 or FM9, such as:
  
−
To configure an IOS/Android Patch Editor for the AxeFx:
+
* [[Tempo and Metronome|Use Tap Tempo]]
−
# Purchase the [http://itunes.apple.com/ca/app/lemur/id481290621?mt=8 Lemur App] ( $20-$35 ) and install it on your Tablet or iPAD.
+
* [[Tuner|Engage the Tuner]]
−
# Go to the [http://liine.net/assets/files/lemur/Lemur-Installer-5.3.2WIN.exe Liine Website] and register yourself as a user, then download, the Lemur Editor and Daemon Software.
+
* [[Presets|Switch presets]]
−
# Connect your Tablet to your computer's IP network. Verify IP address, and ping your tablet to verify.
+
* [[Scenes|Switch scenes]]
−
# Start the Lemur App on your Tablet or IPad.
+
* [[Channels|Switch channels]]
−
# Download an AxeForLemur.jzml script.  Current version is 3.08.
+
* engage or bypass effect blocks
−
# On your PC run the LemurEditor and load the AxeForLemur.jzml script, Click Connect to send the script to your Tablet or IPAD.
+
* increase or decrease level and save the preset
−
# You should see the AxeForLemur Script on your IPAD, on the Default AMP page.
+
* duplicate the function of onboard switches on the FM3, FM9 or FC controller
−
# If your AxeFx is connected to your PC/MAC through a USB cable, run the LIINE LEMUR DAEMON on your machine. This DEAMON will provide an IP Socket on the Network for MIDI and OSC communications from the IPAD to any MIDI devices on your PC/MAC.
+
* and more
−
# Within Lemur on your Tablet Open the Settings drop down list and select "More Settings...", Setup Midi Targets, From: and To:. You may need tap Add Target. You should see a list of network computers, with MIDI devices high lit. Choose AxeFx from the computer that is running the LEMUR DAEMON, for both "From: and "To:. If no devices show up, please verify the IPAD is connected to the IP network, and that the Lemur Daemon is running, and the AxeFX is turned on, and it is connected with USB or MIDI cable.
 
−
# On the Preset Select page of the AxeForLemur script, configure the midi settings to match your setup.  Example, Column-A should Device should be set to AxeFxII or AxeFxXL+ etc, midi channel to '1' to match your MIDI settings, and Lemur target set to the Target within the Lemur Menu.
 
−
# Test by Tapping the Preset Up/Down.
 
−
# Troubleshooting can be a bit challenging and might require a bit of system debug and tweaking.
 
  
−
==Design==
+
Configure the switch(es) in SETUP.
  
−
Design background into key elements of the AxeToLemur script:
+
; Switch Behavior : This determines how an external switch operates. With the default setting of "Follow Hardware" a switch  behaves as you might expect. If you want a momentary switch to behave like a latching/toggle switch instead, use the "Virtual Toggle" option. Now, every time you tap the switch, its state will flip from ON to OFF, or OFF to ON. Note that if you accidentally apply the Virtual Toggle setting to a physical latching switch, you'll need to tap the switch twice for it to toggle.
  
−
Axe For Lemur is a comprehensive Lemur script based in Quasi XML, Objector based C-Script with out pre-processor, structures, pointers etc. The Script is object based, and exists in the JazzInterface tab object AxeForLemur.  Global references exist in this scope.
+
; Switch Polarity : This allows reversing the polarity of any connected switch. The option <q>Normal</q> assumes a <q>momentary make</q> switch. Use the option <q>Reverse</q> when using a <q>momentary break</q> switch, or for creative applications.
  
−
===Design Initialization===
+
An external switch can operate globally as a copy of an onboard switch in any layout by assigning it as a <q>Stand In switch</q>. It's an exact surrogate for the onboard switch, and can even be used with per-preset functions. Momentary switches are preferred for use as stand-ins, because they more closely mimic the behavior of the on-board switches.
  
−
===Design Device Selection===
+
You can assign the switch directly to parameters in the preset. Or you can assign an [[External controller]] to that parameter, and then assign the switch to that specific external controller. The latter option provides more flexibility.
  
−
The preset page (AxeForLemur/dlgProgChange/T1) Contains a Matrix of Midi settings for up to 4 target devices.
+
==Scroll through presets==
  
−
For each 'Target Device'  The user can select and increment/decrement (cTargets/padUpDn) the following (cTargets/swSettings):
+
A single button switch, connected to the pedal port, can be used to scroll through the first bank of presets. This works fine if you have just a few presets to switch between. And if the processor has more than one PEDAL jack, you can assign one to Increment and the other to Decrement.
  
−
* Type : { AxeFx, AxeFx II, Gen Midi, No Bank, Eclipse } = aUser.cMidi.devtypes[ ]
+
==Engage and bypass an effect==
  
−
* Display Offset : { 0 or 1 } = aUser.cMidi.dispoffset[ ]
+
To engage or bypass a specific effect, using an external switch, assign the switch to the effect block in SETUP.
  
−
* MIDI Channel : { 1 .. 16} = aUser.cMidi.chans[ ]
+
==Maintain bypass state when switching scenes==
  
−
* Lemur Target : { 0.. 3 } = aUser.cMidi.targets[ ]
+
You can use an external switch to maintain the bypass state of an effect when switching through presets and scenes.  
  
−
The user can select one of A,B,C, or D target devices; only one is active at a time.
+
# Connect the switch.
 +
# Assign the Bypass Mode parameter of the effect to the switch through an [[External controller]].
 +
# Repeat this in each preset which you want to control.
 +
# Now the switch will control the effect's engaged/bypass state, regardless of the effect's saved state per preset or scene, and stay in sync.
  
−
'''The objective is to integrate  AxeFxXL and AxeFxXL+ into the list of supported Device Types.
+
=DIY Expression Boxes=
  
−
Since this template was last updated by David Sorlien, two new AxeFx devices have been created.    The XL and XL+ have more or less the same SysEx protocols as the AxeFx ( subject to change ), but have New SysEx device ID codes.  The following is a break down of work required to make AxeForLemur support other Fractal Audio Devices.
+
If you're building your own expression knob enclosures, you'll want to use potentiometers that are:
  
−
Essentially the T1/cTargets/swSettings is a 4 x 4 Switch matrix.  Pressing a button will provide a 0..16 button index within the T1/cTargets/swSettings/x variable.  Pressing one of the T1/cTargets/padUpDn will cause the selected T1/cTargets/swSettings/x indexed value to be Incremented/decremented.  The padUpDn/tap() changesbutton matrix.
+
* In the 10k to 100k Ohm range
 +
* Linear (usually B type if you're buying Alpha potentiometers)
  
−
Add two more values to devtypes
+
And when you solder them up to your jacks or cables, you'll want the wiper lug (the middle lug on an Alpha pot) to go to the tip of the jack. The other two, outside, lugs go to the sleeve and ground respectively. Reverse the outside lugs if you want to change the direction the knob operates in (either clockwise or counter-clockwise) by default.
  
−
  change:
+
A typical parts list for an expression knob is:
−
    aUser.cMidi.devtypes[a] = clamp(aUser.cMidi.devtypes[a]+1, 0, 4);
 
−
    aUser.cMidi.devtypes[a] = clamp(aUser.cMidi.devtypes[a]-1, 0, 4);
 
−
  to:
 
−
    aUser.cMidi.devtypes[a] = clamp(aUser.cMidi.devtypes[a]+1, 0, 6);
 
−
    aUser.cMidi.devtypes[a] = clamp(aUser.cMidi.devtypes[a]-1, 0, 6);
 
  
−
Add two more strings to button objet lablels
+
* [https://smallbear-electronics.mybigcommerce.com/1-4-in-stereo-open-frame-switchcraft-12b/ 1/4 TRS jack]
 +
* [https://smallbear-electronics.mybigcommerce.com/alpha-single-gang-16mm-solder-lug-center-detents/ 100k Linear Alpha potentiometer ]
 +
* [https://smallbear-electronics.mybigcommerce.com/small-bear-ring-box/ Ring box enclosure]
 +
* [https://smallbear-electronics.mybigcommerce.com/knobs/ A knob of your choosing]
  
−
  swSettings/updatelabels()
+
You'll need some wire and solder as well. Can be fairly low grade stuff as it's not passing any audio signal and will be in an aluminum enclosure.
−
  for(i=0;i<4;i++){
 
−
    if(aUser.cMidi.devtypes[i]==0) a[i] = 'AxeFX';
 
−
    else if(aUser.cMidi.devtypes[i]==1) a[i] = 'AxeFX II';
 
−
    else if(aUser.cMidi.devtypes[i]==2) a[i] = 'Gen MIDI';
 
−
    else if(aUser.cMidi.devtypes[i]==3) a[i] = 'No Bank';
 
−
    else if(aUser.cMidi.devtypes[i]==4) a[i] = 'Eclpse';
 
−
    else if(aUser.cMidi.devtypes[i]==5) a[i] = 'AxeXL';
 
−
    else if(aUser.cMidi.devtypes[i]==6) a[i] = 'AxeXL+'; }
 
  
−
Change Device ID's within SysEx messages to include devie ids { 6 and 7 }
+
=Tips, tricks and troubleshooting=
  
−
  <SCRIPT name="IsAxeSysex(msg)" ..
+
==Pedal ports: ADC levels==
−
  if(msg[0]==0 && msg[1]==1 && msg[2]==0x74 && ( msg[3]<=3 || msg[3]==6 || msg[3]==7 )
 
−
  ...
 
−
  else if(msg[3]==3) st = 'Axe-FX II';
 
−
  else if(msg[3]==6) st = 'Axe-FX XL';
 
−
  else if(msg[3]==7) st = 'Axe-FX XL+';
 
  
−
and change all hard coded device id's "0x74,3" with "0x74,6" or "0x74,7" in  
+
Check the ADC (Analog-to-Digital Converter) levels of the pedal ports in SETUP.
  
−
  SendSetParam(b, p, v)
+
==Zipper noise==
−
  SendGetParam(b, p)
 
−
  SendGetPresetName()
 
−
  SendGetBypState()
 
−
  SendGetPresetNumber()
 
−
  SendLooperMonEn(en)
 
−
  SendGetSceneState()
 
−
  SendSetModifier(b, p, m, v)
 
−
  SendGetModifier(b, p, m)
 
−
  SendPlaceEffect(b, pos, flag)
 
−
  SendConnectEffect(p1, p2, f)
 
−
  SendSetPresetName(name)
 
−
  SynthMidiNoteOnIn(MIDI_ARGS)
 
−
  SendSavePatch(program, bank)
 
−
  SendGetCabName(cabnum)
 
−
 
 
−
It makes sense to define a class variable like cV.DevID, and make sure it is set on startup by the AxeFx device ID selected by the A,B,C,D device selector.
 
−
 
 
−
===Design Modifiers===
 
−
 
 
−
Modifiers provide a means to dynamically change a subset of the block parameters with automatic, and external functions.    The AxeToLemur Script has a partial implementation of Modifiers.  The AxeToLemur.pdf describes 'double tapping' the intended modify-able' control to enable modifier, but this doesn't appear to be within the implementation.
 
−
 
 
−
Within the 'control's bps[] array, for hw==0, element at index==6 is the Modifier number, if this value is >= 0, then the control should have modify-able values.  This applies to 'bps' of sliders, custom buttons, muxed-sliders.  If the 'control's bps[8] is set to 1, then there is an active modifier on the control.
 
−
 
 
−
It is assumed that 'double tapping' the 'Zoom' button will enable a RED "MOD" feature on the Zoom button.  cS.DoubleTap() captures double tap event. This sets cV.dbltapzoom[2] = 1;  A parameter that is 'Modify-able' has a Green 'txt' value.
 
−
 
 
−
As of 3.08, the repainting logic within the APP did not support GREEN 'txt' labels.
 
−
 
 
−
cS.psmxfdr(obj, p, p, m, t), and cS.psmxcb(obj,b,p,m,t) used to set/map a 'muxed fader' to an AxeFx control.  This function also sets the colour of the text of a control
 
−
 
 
−
Notes:
 
−
 
 
−
ResetModifierText(..), called when changing pages in Lemur, to clear out cV.modlistlast
 
−
 
 
−
(cV.rState==5) modifiers are being queried
 
−
SendGetModifier(..)
 
−
 
 
−
(cV.rState==6) modifiers are being queried
 
−
SendGetModifier(mbps[hw], mbps[hw+6], a[i]); response in HandleModifierValMsg(msg), calls UpdateModifier(b, p, m, v);
 
−
 
 
−
(cV.rState==7) modifiers are being reset
 
−
SendSetModifier(..)
 
−
 
 
−
buildModCtlList() saves cV.modlist[] to cV.modlistlast[], iterates through all objects in cMain. To find build a cV.modlist[] of modifyable parameters within objects that 1. contain a bps[], 2. are in a visible block, 3. the block is active in the preset, the bps[6] is >= 0.  cV.dbltapzoom[] is filled with same array of objects
 
−
 
 
−
cS.DoubleTap() appears to be implemented to open a Modifier Dialog: dlgModifiers.showme(1); but it is not called within the Script.  This function will trigger a 'DoEveryFrame' midi query of the Modifier setting.
 
−
 
 
−
3.09 TODO List:
 
−
 
 
−
1. confirm all modifier indexes on Fractal Parameters
 
−
 
 
−
2. call cS.DoubleTap() when Zoom == MOD and a modifyable control is Tapped.
 
−
 
 
−
3. verify control's txt value is rendered RED when control modified control is active (previously engaged, polled through DoEveryFrame())
 
−
 
 
−
===Project Globals===
 
−
 
 
−
Var blkd=
 
−
 
 
−
Var blksq=
 
−
 
 
−
Var blok=
 
−
 
 
−
Var blx=
 
−
 
 
−
Var debugflag=
 
−
 
 
−
Var hw= 'hardware version =0 AxeFx, =1 others, Ultra etc.
 
−
 
 
−
Var Querying=
 
−
 
 
−
tidx=
 
−
 
 
−
'''Script BuildParamList()'''
 
−
 
 
−
:Sets cV.bpobj to first object in cMain, and iterates through all objects to build cV.BlocksToRefresh list. For Block numbers (99..200) that are in the preset values are added to a refresh list
 
−
 
 
−
Script RefreshSequencer()
 
−
 
 
−
Script SendCCAxe(ccnum, ccval)
 
−
 
 
−
Script SendConnectEffect(p1, p2, f)
 
−
 
 
−
Script SendGetByState()
 
−
 
 
−
Script SendGetCabName(cabnum)
 
−
 
 
−
Script SendGetModifier(b, p, m)
 
−
 
 
−
Script SendGetParam(b,p)
 
−
 
 
−
Script SendGetPresetName()
 
−
 
 
−
Script SendGetPresetNumber()
 
−
 
 
−
Script SendGetRoutingGrid()
 
−
 
 
−
Script SendGetSceneState()
 
−
 
 
−
Script SendLooperMonEn(en)
 
−
 
 
−
Script SendPG2Axe(pgnum)
 
−
 
 
−
Script SendPlaceEffect(b,pos,flag)
 
−
 
 
−
Script SendSavePath(program, bank)
 
−
 
 
−
Script SendSetModifier(b, p, m, v)
 
−
 
 
−
Script SendSetParam(b, p, v)
 
−
 
 
−
Script SendSetPresetName(name)
 
−
 
 
−
Script SynthMidiNoeOffIn(MIDI_ARGS)
 
−
 
 
−
Script SynthMidiNoteOnIn(MIDI_ARGS)
 
−
 
 
−
Script sxoutHandler(b,p, s, val)
 
−
 
 
−
Script UserMidiCCIn(MIDI_ARGS)
 
−
 
 
−
Script UserMIDINOTEIn(MIDI_ARGS)
 
−
 
 
−
==Objects==
 
−
 
 
−
Major AxeForLemur Objects:
 
−
 
 
−
===aUser===
 
−
User specific settings, like favorite presets, midi channel. These can be persistent if the user re-saves the script after mondifications are made through the script itself. Global midi CC's are stored in gen1.cc*
 
−
 
 
−
Querying : set to 1 during referesh, most likely to prevent re-triggering
 
−
 
 
−
'''aUser.cMidi.gen2''' :: MIDI CC # numbers for different MIDI CC parameters
 
−
 
−
'''..scenescc[0]'''  :  MIDI CC # number for 'scene select'
 
−
 
 
−
===cMain===
 
−
User interface for Axe-Fx blocks. 
 
−
 
 
−
cMain contains UI design and configuration for each Block (pair) Tab within AxeForLemur script
 
−
 
 
−
IntState3(..) macro, configures button labels within the UI interface.  Typically these buttons are for Block instance selection, but some are for selecting other aspects of each' block Tab.
 
−
 
 
−
Each AxeForLemur Block Tab contains multiple containers, one for each UI element.  These containers more or less contain a symetrical set of attributes, functions and UI controls that allow for support from a common set of functions (else where in the code).
 
−
 
 
−
Each UI Element contains:
 
−
  bps: Midi / UI control structure
 
−
  ctl: the lemur screen object
 
−
    x : Primary value for this control
 
−
    z : ???
 
−
  txt:  A screen description of the parameter. Example ('volume')
 
−
  txtval: text object on screen to describe the object parameter value.  Example (0..127)
 
−
  Optional: 
 
−
    cbDlg: a pop up dialog object
 
−
        x : value for the selected value of the dialog
 
−
        tap(..) : function called to initialize the dialog
 
−
 
 
−
When a control changes a 'magic' must be called to send the ctl's value to the bps[..] defined midi destination
 
−
 
 
−
===cS===
 
−
Common Scripting Object. 
 
−
 
 
−
Common Script Object Container
 
−
 
 
−
'''addRefreshParam( b, p) : Adds a parameter to one of:
 
−
 
 
−
  (cV.blist[0..249],    cV.plist[0..249]),
 
−
  (cV.blist2[250..499], cVplist2[250..499]),
 
−
  (cV.blist3[500..749], cV.plist3[500..749]) at position cV.numcontrols,
 
−
 
 
−
But doesn't appear to increase cV.numcontrols, called from Project.BuildParamList()
 
−
 
 
−
'''cS.psmxfdr(obj, b, p, -1, 'label')'''
 
−
 
 
−
===cScanX===
 
−
 
 
−
===AxeForLemur cShow===
 
−
Group of scripts to refresh Axe Block Tabs. 
 
−
 
 
−
===cTabSel===
 
−
 
 
−
===cV===
 
−
Group of global variables.
 
−
 
 
−
'''blist, plist, blist2, plist2, blist3, plist3'''  250 entry lists of active 'b==block id's and p==parameter ids.  each list has a physical limit of 250 elements.  These 6 arrays constitute a 2D array of 750 items.
 
−
 
 
−
===AxeForLemur ...===
 
−
Pop Up Dialogs. 
 
−
 
 
−
Lesser Objects (for now)
 
−
 
 
−
cbHideRoutes :
 
−
 
 
−
cbHideRoutes :
 
−
 
 
−
cbProgName : Button on bottom of UI to display dlgProgChange.showme(x)
 
−
 
 
−
cbRefresh :
 
−
 
 
−
cbTapTempo : Sends a CC 14 value 127 to currently selected Axe target, method cbTapTempo.hdlSxin(..) sets the lemur Tap button different colors
 
−
 
 
−
cbZoom:  A double tap 'Zoom' function for sliders, dont know how this works.
 
−
 
 
−
aUser.cMidi.gen2.ccTapTempo
 
−
 
 
−
''' Global Functions
 
−
 
 
−
SendCC2Axe(..)
 
  
−
==Development Tools==
+
If moving the expression pedal creates choppy sounds or zipper noise, increase the Damping parameter in the modifier menu.
  
−
[http://www.firstobject.com/dn_editor.htm firstobject XML Editor Application.]
+
==Pedal operates only for a part of the sweep==
−
This is a light weight free XML editor that doesnt get confused by the Lemur script. The Editor has a good dual view ( one view is an XML object tree, the other side is the pure text.  Using F7 allows you to sync between the two.
 
  
−
KDIFF3 [http://kdiff3.sourceforge.net/ http://kdiff3.sourceforge.net]
+
If an expression pedal only seems to operate for a part of its sweep, make sure that it's connected with a TRS-TRS cable and that it has been calibrated properly.  
−
Since the AxeForLemur is a large monolithic text file, having a good DIFF tool allows you to see the changes LemurEditor and text editors have applied to your file. The LemurEditor does some strange things to this template when it is edited, the preference is to make clean edits with FirstObject Editor, and not use the Lemur Editor directly, as it has a habit of changing many unintended parameters throughout the script.
 
  
−
SVN or Git are good tools to manage progressive changes to the script.
+
Also, make sure that it really is an expression pedal and not a volume pedal and that it meets the requirements for operating with Fractal Audio products.
  
−
==Releases and Resources==
+
=Videos=
  
−
[http://forum.fractalaudio.com/axe-fx-ii-discussion/98926-return-lemur-support-here.html return-lemur-support-here]
+
[[video:Leon-ExpPedal-Functions]]
 +
[[video:Rosh-ExpPedal-Multiple]]
 +
[[video:Sus-EV2]]
 +
[[video:French-EV]]
 +
[[video:Cooper-EV-Blend]]
 +
[[video:Cooper-Wah-Volume]]
 +
[[video:Rosh-ExpPedals]]
 +
[[video:Cooper-WahWhammyOnePedal]]
  
 
[[category:Axe-Fx2]]
 
[[category:Axe-Fx2]]
 
[[category:Axe-Fx3]]
 
[[category:Axe-Fx3]]
 
[[category:FM3]]
 
[[category:FM3]]
 +
[[category:FM9]]
 +
[[category:VP4]]
 
[[category:AX8]]
 
[[category:AX8]]
 
[[category:FX8]]
 
[[category:FX8]]
 
[[category:Remote]]
 
[[category:Remote]]
 +
[[category:All]]

Latest revision as of 12:29, 11 September 2025

Remote control of Fractal Audio devices

Fractal Audio's processors can be remotely controlled in various ways. This includes the use of expression pedals such as Fractal Audio's EV-1 and EV-2 pedals, (see below) and/or external switches, either connected directly to a pedal port on the device, to a MIDI controller or to Fractal Audio's Fractal Audio FC-6 and FC-12.

The number of ports, as well as support for a single switch or dual switch, varies per product.

Read the following pages for more information:

Fractal Audio EV-1 and EV-2 expression pedals

Read this: Fractal Audio EV-1 and EV-2

Expression pedal

Required specifications

The requirements for an expression pedal are:

  • Linear resistance taper
  • Max resistance of 10-100 kOhm
  • TRS-to-TRS cable connection (stereo jack)

Connect an expression pedal

From the Owners Manual:

TRS stands for TIP-RING-SLEEVE and describes the configuration of a 1/4" end plug or jack with three connectors. Normal guitar cables are TS (Tip-Sleeve) since they lack the ring required for a third contact. Expression pedals require TRS cables because full control voltage is transmitted to them on one contact (the tip), while less than full voltage is returned to on another (the ring) so the host device is able to sense and utilize the pedal position. The third contact (sleeve) is connected to ground.

The expression pedal can be connected:

  • Directly to the device using a PEDAL port
  • To an FC-6 or FC-12 foot controller
  • To a MIDI controller that's connected to the device

Configure an expression pedal

Pedals that are connected directly to the Fractal Audio device, can be configured and calibrated on the Pedal page of SETUP. On the VP4, this is the Setup > Pedals menu.

Pedals that are connected through another connected device, such as FC-6 and FC-12 foot controllers or 3rd party MIDI controllers, must be configured in the configuration menu of that device, including calibration. For the FC controllers, use the FC controllers menu in SETUP.

Always calibrate the pedal before use! This makes sure that the pedal's full sweep range is being used.

You can assign the pedal directly to parameters in the preset. Or you can assign an External controller to that parameter, and then assign the pedal to that specific external controller. The latter option provides more flexibility.

What happens if the pedal is not connected

If a parameter is controlled by a switch or pedal, and that pedal or switch is not connected when powering on the Fractal Audio device, the device needs to know what value to use. Disconnecting a pedal that operates as a Volume pedal should not mute the device, for example.

For parameters that have been assigned to an External controller, the desired initial value can be set in SETUP under Initial Value.

Current firmware also features activity sensing for internal pedals, FC pedals and external controllers. This stops Auto-Engage from activating an effect when the pedal/controller is not connected. This prevents, for example, a Wah from being engaged when Auto-Engage is on but no pedal is connected (i.e., you left your expression pedal at home).

FRACTAL AUDIO QUOTES

[1] […] The expression pedal inputs on the Axe-Fx and on the FC6/12 have pullup resistors. If a pedal is unplugged the value goes to 100%. This is done so that if a pedal is connected to volume and you forget your volume pedal you'll still have sound.

Factory presets and expression pedals

Many factory presets let you use a connected expression pedal, for example as a Wah. Search the Factory presets page in the wiki for "External".

Create a volume pedal

To set up a volume pedal in a single preset, read Volume/Panner block.

To set up a global volume pedal that works across ALL presets, read the section in the Owner's Manual.

Create a Wah pedal

Read Wah block for more information.

Create a Whammy pedal

Read Pitch block for more information.

Create a Talk Box

Read Formant block for more information.

Control the amount of delay and/or reverb

You can use an expression pedal to control the amount of delay or reverb.
Assign the pedal as an External controller to the INPUT GAIN parameter in the Delay and/or Reverb Block.

Morph between clean and dirty tones

Watch the video at the bottom of this page.

Display the tuner at heel down

Read Tuner for more information.

Auto-engage an effect

Read Auto-Engage for more information.

Use a pedal for multiple tasks

You can dedicate a single expression pedal to multiple tasks, within a single preset. Below are various examples.

Control Wah or Whammy

  1. Insert a Wah block.
  2. Insert a Pitch block, directly above or below the Wah in a parallel row. Connect it back to the main row.
  3. In the Modifier menu of BOTH effects (Wah:Frequency parameter, Pitch:Control) set Source to External 1. Enable Auto-Engage.
  4. Add a Mixer block to the main row, just after Wah and Pitch.
  5. Edit Mixer: enter the modifier menu of the Gain parameter for the row that connects to the Wah. Set Source to another External controller (which will be attached to an IA-switch to switch between Wah and Whammy). Set Start Value to 100% and End Value to 0.
  6. Do the same for the row that connects to the Pitch block. But: set Start Value to 0% and End Value to 100%.
  7. Program an IA switch to switch between Wah and Whammy, using the Mixer rows. Use the CC of the external controller that you specified while editing the Mixer block, and send "127" for the Wah, and "0" for the Whammy.
  8. Moving the pedal should activate both the Wah and the Pitch block. But thanks to the Mixer block you'll only hear one of these effects. If you're hearing the Wah and the Whammy effects simultaneously, you need to press the IA-switch to get the Mixer block to work.

Control Volume and Wah (source: Bakerman)

  1. Place a Volume block on the grid.
  2. Assign an IA switch to an external controller's CC.
  3. Assign another external controller the Wah and Volume control knobs.
  4. Set the first external controller as a Bypass modifier for both blocks and reverse the slope of one (start 100, end 0).
  5. Now the IA switch will toggle between Wah/Volume and the pedal will control both.

Using Scenes and channels

  1. Put Wah and Pitch and Volume in one vertical column.
  2. Assign an external controller (pedal) to the effects. Enable Auto-Engage in Wah and Pitch.
  3. Configure channel A, then copy it to channel B.
  4. In Wah and Pitch turn down Level in Channel B.
  5. Scene 1 is for Wah. Set Wah to Channel A, set Pitch to channel B, bypass Volume.
  6. Scene 1 is for Whammy. Set Wah to channel B, set Pitch to channel A, bypass Volume.
  7. Scene 3 is for Volume. Set Wah and Pitch to channel B, engage Volume.

Using the Multiplexer block

Read Multiplexer block for more information.

Control Volume and Wah with an expression pedal that has a switch

  1. Put the Wah and Volume blocks on the grid.
  2. Configure both blocks to be controlled by the pedal. Set the Wah to Auto-Engage.
  3. Attach the pedal's switch to the Bypass parameter of both blocks. Set Min/Max in the modifier menu in one block to 0/100 and in the other block to 100/0.
  4. The switch now switches between Wah/Volume duty.

External switch

Connect an external switch

The FC controllers and FM3 support a dual-button switch per port when using a TRS cable, or a single-button switch when using a TS-TS cable.

The Axe-Fx III, FM9 and VP4 limit each PEDAL port to a single switch (TS cable).

The switch can be connected:

Configure an external switch

You can connect external switches to the device or to FC-6 and FC-12 foot controllers to expand switching possibilities.

External switches can perform the same tasks as "local" switches on an FC controller, FM3 or FM9, such as:

Configure the switch(es) in SETUP.

Switch Behavior 
This determines how an external switch operates. With the default setting of "Follow Hardware" a switch behaves as you might expect. If you want a momentary switch to behave like a latching/toggle switch instead, use the "Virtual Toggle" option. Now, every time you tap the switch, its state will flip from ON to OFF, or OFF to ON. Note that if you accidentally apply the Virtual Toggle setting to a physical latching switch, you'll need to tap the switch twice for it to toggle.
Switch Polarity 
This allows reversing the polarity of any connected switch. The option Normal assumes a momentary make switch. Use the option Reverse when using a momentary break switch, or for creative applications.

An external switch can operate globally as a copy of an onboard switch in any layout by assigning it as a Stand In switch. It's an exact surrogate for the onboard switch, and can even be used with per-preset functions. Momentary switches are preferred for use as stand-ins, because they more closely mimic the behavior of the on-board switches.

You can assign the switch directly to parameters in the preset. Or you can assign an External controller to that parameter, and then assign the switch to that specific external controller. The latter option provides more flexibility.

Scroll through presets

A single button switch, connected to the pedal port, can be used to scroll through the first bank of presets. This works fine if you have just a few presets to switch between. And if the processor has more than one PEDAL jack, you can assign one to Increment and the other to Decrement.

Engage and bypass an effect

To engage or bypass a specific effect, using an external switch, assign the switch to the effect block in SETUP.

Maintain bypass state when switching scenes

You can use an external switch to maintain the bypass state of an effect when switching through presets and scenes.

  1. Connect the switch.
  2. Assign the Bypass Mode parameter of the effect to the switch through an External controller.
  3. Repeat this in each preset which you want to control.
  4. Now the switch will control the effect's engaged/bypass state, regardless of the effect's saved state per preset or scene, and stay in sync.

DIY Expression Boxes

If you're building your own expression knob enclosures, you'll want to use potentiometers that are:

  • In the 10k to 100k Ohm range
  • Linear (usually B type if you're buying Alpha potentiometers)

And when you solder them up to your jacks or cables, you'll want the wiper lug (the middle lug on an Alpha pot) to go to the tip of the jack. The other two, outside, lugs go to the sleeve and ground respectively. Reverse the outside lugs if you want to change the direction the knob operates in (either clockwise or counter-clockwise) by default.

A typical parts list for an expression knob is:

You'll need some wire and solder as well. Can be fairly low grade stuff as it's not passing any audio signal and will be in an aluminum enclosure.

Tips, tricks and troubleshooting

Pedal ports: ADC levels

Check the ADC (Analog-to-Digital Converter) levels of the pedal ports in SETUP.

Zipper noise

If moving the expression pedal creates choppy sounds or zipper noise, increase the Damping parameter in the modifier menu.

Pedal operates only for a part of the sweep

If an expression pedal only seems to operate for a part of its sweep, make sure that it's connected with a TRS-TRS cable and that it has been calibrated properly.

Also, make sure that it really is an expression pedal and not a volume pedal and that it meets the requirements for operating with Fractal Audio products.

Videos

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