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EFFECTS GUIDE
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Doc v6.00c
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Wahwah [WAH]
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.
A wah is actually a very straightforward device. The signal is passed through a resonant filter whose frequency is
controlled by a pedal. The Wahwah may be placed before distortion for a subtler, classic sound or after distortion
for a more prominent and aggressive sound.
The wah is stereo-in/stereo-out.
Each Axe-Fx II preset can use two fully independent Wahwah blocks.
Wahwah X/Y Channel Switching
Each instance of the WAH 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.
Parameters
TYPE
– Selects between a low-pass, bandpass, or peaking filter. A bandpass filter gives a more dramatic
sound whereas the other filters are more subtle.
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.
DRIVE
– This simulates overdriving the circuit of the wah pedal.
TRACK
– Sets the “Q” tracking of the filter. As the frequency is increased, the resonance will be decreased by
an amount proportional to this value. If this is zero, the resonance of the filter will be constant at all
frequencies. Classic wah pedals usually have a resonance that decreases with frequency due to design
limitations. This control can be used to mimic those pedals.
CONTROL
– Sets the position of the wah. Normally you would use a MODIFIER to assign this parameter for
real-time control, but simply dialing it in will give you a great “parked” wah sound.
Summary of Contents for AXE-FX II
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Page 82: ...EFFECTS GUIDE Doc v6 00c 71 ...