EFFECTS GUIDE
90
Doc v6.00c
Phaser X/Y Channel Switching
Each instance of the Phaser block stores two fully independent sets of parameters called
X
and
Y
. Selecting
between these allows you to change all block settings—instantly—at the touch of a switch or button (excluding
current
Bypass State
and any
Modifier
assignments). See X/Y Switching on p.
36
for more information.
Basic Parameters
TYPE
– This control instantly sets other phaser parameters for different useful sound settings. Types include:
DIGITAL MONO, DIGITAL STEREO, SCRIPT 45, SCRIPT 90, BLOCK 90, CLASSIC VIBE, and STEREO 8-STAGE.
RATE
– Sets the frequency of the LFO that controls the “sweep.” Set fully counterclockwise to sync to Global
LFO1 (p.
129
). When
RATE
is shown in parenthesis, it is being set automatically by the
TEMPO
parameter (see
below). Set the
TEMPO
to “NONE” for manual control.
DEPTH
– Sets the depth of the LFO that controls the “sweep.” Set higher for more dramatic phasing effects.
FDBK
– Feedback, also known as “regeneration” or “resonance,” controls how pronounced the peaks and
notches are. This is largely responsible for the iconic sound we associate with a phaser.
FREQ
– Sets the start frequency of the first stage filter. This, in combination with the depth control, controls
the sweep range of the notches. This parameter is repeated as “START FREQ” on the Advanced page.
TEMPO
– Synchronizes the rate of the Phaser LFO in rhythmic relation to the global tempo. For example, if
the global tempo is 120 BPM, and
TEMPO
is set to a “1/4,” the LFO rate will be 2 Hz (120 BPM / 60 seconds =
2). To ignore the global tempo set the tempo control to NONE.
Advanced Parameters
(All BASIC controls of the Phaser except
TYPE
are duplicated on the ADVANCED page for convenience).
ORDER
– Sets the number of phase shifting circuits—or “stages”—in increments of two. Different settings
have distinctly different sound qualities. For a more “pronounced” effect, increase the order.
LFO TYPE
– Selects the “shape” of the LFO, determining how the sweep changes over time. SINE or
TRIANGLE shapes will emulate classic phaser sounds. SAW shapes provide rising or falling effects, and
Exponential/Logarithmic “shapes” create a more extreme “pulsing” effect.
LFO PHASE
– Sets the phase difference of the right waveform of the phaser LFO. Values greater than 0°
produce stereo phasing with 180°, reproducing the legendary “reverse sync” setting of “the world’s largest
phase shifter” (which incidentally employed six stages per side in this mode.)
See section
16.5
on p.
157
for more information on LFO waveform shapes and phase.
FREQ SPAN
– Sets the span of the filters. Higher values separate the resulting notches by greater amounts.
VIBE MODE
– Technically, this parameter sets the all-pass frequency spacing. But it would probably suffice
to say that if Jimi, Robin, and David had a favorite Axe-Fx II phaser setting, this would be it. The
TYPE
Summary of Contents for AXE-FX II
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