Doc Q7.0
125
Wahwah [WAH]
5.34
From Jimi Hendrix's “Voodoo Chile” to, well, Stevie Ray Vaughan's “Voodoo Chile,” the wah pedal holds a unique
place in the annals of rock history. The Axe-Fx II
Wahwah
is the embodiment of this legacy but with modern
reliability and control and a
smooooth
feel. In fact, a wah is actually a very straightforward device. The signal is
passed through a resonant filter whose frequency is controlled by a pedal. Place it before distortion for a classic
sound or after distortion for a more prominent and “synthy” sound.
The wah is stereo-in/stereo-out. Each Axe-Fx II preset can use two fully independent Wahwah blocks.
The
Wah
block supports X/Y Switching. See p.
Parameters
TYPE
– Selects between different wah types based on classic vintage and cutting edge modern designs.
Type
Based On…
FAS Standard
Equivalent to the “Bandpass” setting in earlier firmware.
Clyde
Based on an original Vox Clyde McCoy wah.
Cry Babe
Based on a Dunlop Cry Baby.
VX846
Based on a Vox V846-HW hand-wired wah.
Color-Tone
Based on a Colorsound wah.
Funk
Modeled after the “Shaft” sound.
Mortal
Based on a Morley wah/volume pedal.
VX845
Based on a Vox V845.
FMIN
– Sets the frequency of the filter when the frequency control is at its lowest value. This can be adjusted
to match the range of your instrument or preference.
FMAX
– Sets the frequency of the filter when the frequency control is at its highest value.
RES
– Sets the resonance (“Q”) of the filter. Higher values give a more pronounced response.
TAPER
– Defines the “Sweep Curve” by allow selection from various popular potentiometer tapers.
DRIVE
– This simulates overdriving the circuit of the wah pedal.
TRACK
– Causes “Q” to inversely track filter frequency. Due to design limitations, classic wah pedals usually
become less resonant (less “peaky”) as you push the pedal down. This control can be used to mimic those
pedals. As frequency is increased, the resonance decreases. If this is zero, the resonance is the same at all
frequencies.
CONTROL
– Sets the position of the wah. Normally you would assign this parameter to a pedal for real-time
control, but you can also set it manually for a “parked” wah (so you can play the guitar on the MTV.
COIL BIAS
– This adjusts the DC offset of the virtual inductor which interacts with the wah’s
DRIVE
parameter
to replicate the subtle (and awesome) sound of some of the most coveted wah pedals.
LOW CUT FREQUENCY
– Applies a highpass filter, as created by the internal coupling capacitor of a real
wah pedal.
