X/Y switching (legacy)

This page discusses functionality of legacy products and will not be updated.

Available on which products

• Axe-Fx III: no (replaced with Channels)
• FM9: no (replaced with Channels)
• FM3: no (replaced with Channels)
• Axe-Fx II: yes
• AX8: yes
• FX8: yes

What is X/Y switching

Most effect blocks in the Axe-Fx II, FX8 and AX8 can be switched quickly between two sets of settings: X and Y.

Examples:

• Amp X = clean, Amp Y = high gain
• Phaser X = Script 90, Phaser Y = Vibe
• Rotary X = slow, Rotary Y = fast
• Cab X = mono, Cab Y = stereo
• GEQ X = soft boost, GEQ Y = loud boost

"The idea behind X/Y is that people often have multiple distortion/chorus/delay/etc. pedals on their board but they rarely have more than one on at a time. So rather than creating more instances of effects, which sucks up CPU, have each instance capable of more than one sound." [1]

X/Y switching has been replaced with Channels on next generation Fractal Audio products (Axe-Fx III, FM3).

Which effect blocks support X/Y

Axe-Fx II Mark I and II – Amp, Cab, Chorus, Delay, Drive, Flanger, Phaser, Pitch, Reverb, Wah, Rotary

Axe-Fx II XL and XL+ – Amp, Cab, Chorus, Compressor/Dynamics, Delay, Drive, Flanger, GEQ, Gate, Mixer, PEQ, Phaser, Pitch, Rotary, Reverb, Tremolo, Wah

AX8 – Amp, Cab, Chorus, Compressor/Dynamics, Delay, Drive, Filter, Flanger, Gate, Multi Delay, Phaser, Pitch, Rotary, Reverb, Tremolo, Wah

FX8 – Chorus, Compressor/Dynamics, Delay, Drive, Filter, Flanger, Gate, MIDI, Multi Delay, Phaser, Pitch, Relay, Rotary, Reverb, Tremolo, Wah

Regarding transferring presets on the Axe-Fx II:

"Any blocks that have X/Y on the XL but not on the Mark II will not import the bypass state as that is stored differently. You need to manually adjust the bypass state after import." [2]

Switch between X and Y

Axe-Fx II — In the Edit mode of a block, press the dedicated X/Y buttons on the front panel.

FX8 and AX8:

• Hold a switch (1-8) to alternate between X and Y. If the LED is amber lit, Y is active.
• Assign one of the three F-switches to "Single X/Y" or "Sticky X/Y", then press the switch which has been assigned to the effect.
• Switch a block between X and Y on the grid using a shortcut key:
  • AX8 — SHIFT + 2x EDIT on LAYOUT page, or 2x EDIT in a block's editing mode
  • FX8 — 2x EDIT on CFG screen

Scenes — The X/Y state of an effect can be set per scene.

Editors — Press the "X" key on the keyboard to switch a block between X and Y in the software editor. The X/Y state of each block is shown in the software editor, without needing to select the block first.

MFC-101 and other MIDI controllers — Most blocks have a dedicated MIDI CC for X/Y switching. These are listed in the manuals. Assign the CC to a switch to alternate between X and Y.

You can configure X/Y effect blocks to engage the effect in either X or Y mode. Example: ([3])

1. IA Switch 1, ON message: DELAY 1 ON, DELAY 1 X (CC#47:127, CC#106: 127)
2. IA Switch 1, OFF message: DELAY 1 OFF, DELAY 1 X (CC#47:0, CC#106: 127)
3. IA Switch 2, OFF message: DELAY 1 ON, DELAY 1 Y (CC#47:127, CC#106: 0)
4. IA Switch 2, OFF message: DELAY 1 OFF, DELAY 1 Y (CC#47:0, CC#106: 0)

Or use a MIDI controller's "group" or "linked switches" feature.

On the MFC-101 MIDI foot controller X is green, Y is red. If you prefer the default state to be green, use Y as the default state.

Note that not all effect blocks which support X/Y have a specific MIDI CC for that task. The FX8 lets you assign CCs to those, the Axe-Fx II does not. There's a way around this. Use a MIDI Monitor to detect the MIDI sysex command that switches the block between X/Y. Then program a switch on the controller using that data.

Visual indication

Axe-Fx II and FX8 — The current X/Y state of the selected block is shown in an effect block's EDIT menu (not on the Layout page).

AX8 — The current X/Y state of the selected block is shown at the bottom of the Layout page.

The visual X/Y state of effects blocks is shown in the software editors.

CPU usage

CPU usage is calculated using the current block state (X or Y). When switching an effect between X/Y, the preset's CPU usage may change.

Copy and paste X or Y

The "X" settings can be copied to "Y", and vice versa, on the front panel of the Axe-Fx II by pressing the X or Y button twice quickly. There's no equivalent shortcut on the AX8 and FX8 hardware.

The software editor can be used to copy and paste an entire block or just the X or Y settings within the preset or to another preset.

Swap X and Y

Swapping X/Y settings of a block requires use of the editor.

Block reset and X/Y

Resetting block settings on the hardware resets the parameters to their default values. This only applies to the current state: X or Y.

To reset the entire block, switch to the other state and repeat the process, or use the software editor to reset the entire block.

Modifiers and X/Y

If a modifier has been assigned to a parameter, it always applies to both X and Y. It's not possible to have different modifier settings for X and Y, the architecture doesn't allow this. [4]

Recall Effect and X/Y

The Recall Effect function (which copies block settings from another preset) always imports both X and Y settings. If you want to copy just X or just Y, use the software editor.

X/Y switching can cause an audio gap

When switching an Amp block between X and Y, there will be a short gap in the sound.

Compare sounds and settings with X/Y

X/Y switching offers an easy way to compare sounds when tweaking. Example:

1. Go to an Amp block, state "X"
2. Double-click "Y" on the front panel to copy the "X" settings into "Y"
3. Select X or Y, and adjust settings
4. Now alternate between X and Y to see and hear the differences

You can also do this in the software editor.

This also offers an easy method to quickly see non-default settings, by resetting one side to default settings.

Crossfading sounds

Sounds do not crossfade when switching between X and Y. Use Scene Controllers instead.