Phaser block

Available on which products

• Axe-Fx III: 2 blocks
• FM3: yes @@
• Axe-Fx II: 2 blocks
• AX8: 1 block
• FX8: 2 blocks

Channels or X/Y switching

• Axe-Fx III and FM3: 4 channels
• Axe-Fx II: X/Y
• AX8: X/Y
• FX8: X/Y

Types

Uni-Vibe

The Uni-Vibe effect is available as a special mode of the Phaser block. Engage the Vibe mode (or select the Classic Vibe type).

The default settings are modeled after the Fulltone Deja-Vibe. source

More settings:

• Robin Trower
• Shin-ei Vibe-Bro

Put the effect before the Amp block.

"You need it before the amp if you want the bump." source

Connect a pedal or switch to the Rate parameter to control speed.

More information:

• Wikipedia
• Gilmourish.com

Barber Pole

Like the "Shepard" tone, this creates the illusion of a never-ending upwards cycle. Works best when placed at the end of the chain.

Bi-Phase

Set the Phaser to 6 stages to emulate a Mutron Bi-Phase.

"For the double-phaser of the original, set it to 12-stage with LFO Phase at 0." source

Step Phaser

Set Depth to 0, attach Frequency Start to the Sequencer. Set Min and Max and adjust the Sequencer faders.

Mono or stereo Phaser

Phaser defaults to mono to prevent phase problems when used before an Amp block.

To make it stereo, change the LFO Phase setting and place it after Drive, Amp and Cab.

Parameters

Parameters table

Parameter	Axe-Fx III / FM3	Axe-Fx II	AX8 / FX8
Type	yes
Phaser Mode	yes
Order	yes
Rate	yes
Depth	yes
Tempo	yes
Feedback	yes
Start Frequency	yes
Frequency Span	yes
LFO Type	yes
LFO Phase	yes
Bulb Bias	yes
Feedback Tap	yes
Tone	yes
LFO Reset on Bypass	yes
Barberpole — Sweep Direction	yes
Barberpole — Filter Q	yes

Level

"Phasers cause notches in the spectrum which can reduce the apparent volume. It depends on the frequency content. Overdriven sounds have more content and will be affected more. The Level knob allows you to compensate for this."

Order

Increase the Order parameter to simulate phasers such as the EHX Small stone and Mu-tron Bi-Phase.

Feedback Tap

"There is no feedback on a Script 90." source

LFO Bypass Reset

If LFO Bypass Reset is set to anything other than Off, LFO will be reset to the selected phase whenever the block is bypassed. This allows synchronizing the sweep to the engagement of the effect.

Start Frequency

"Another fun phaser trick is to set DEPTH to 0 and assign the Frequency Start to an expression pedal." source

Thump when engaging the Phaser

Engaging some effects, like Wah or Phaser, can cause a "thump" in the sound. This may be caused by impedance switching. To solve this, change Input Impedance from "Auto" to "1M". The above doesn't apply to Fractal Audio processors with a fixed (not adjustable) input impedance. More information