Important safety information. Read the following information carefully and keep all instructions for
future reference.
Do not open any part of the Wahoo case other than the battery compartment. There are no user-
!
serviceable parts in the Wahoo.
Do not expose the Wahoo to rain, liquids or moisture of any kind. If this occurs, disconnect the
!
Wahoo from your computer, power supply, and from your musical instrument and remove any
batteries then allow the unit to dry out completely before using it again. If any liquid has entered the
unit, it may need to be serviced by a sonuus engineer or authorised repair centre.
When the Wahoo has been stored in a cold environment (
!
environment (
such cases the Wahoo should be allowed to warm up to room temperature before use to ensure any
such condensation has evaporated.
Avoid getting anything,
!
damage to the Wahoo footpedal sensor.
Only use the correct type of power supply (see “Powering the Wahoo” on page 8). The Wahoo
!
must never be connected directly to mains electricity.
Do not drop the Wahoo or expose it to excessive shock or vibration. This may cause damage to
!
the electronics inside the unit.
Do not put excessive weight onto the footpedal of the Wahoo. It is designed to be foot-operated,
!
but not to bear excessive loads. Do not allow your foot to press on the control panel area because
this may damage it. The Wahoo has protection bars to prevent your feet from accidentally pressing
this area but this cannot provide complete protection—you must still take reasonable care when
using the product.
a warm room), condensation can form on the outside and inside of the Wahoo. In
e.g.,
an instrument cable, trapped under the footpedal — this will cause
e.g.,
a car) then exposed to a warmer
Page 3
Owner’s Manual
Quick start
This manual is a comprehensive guide to the Wahoo. To start using it as quickly as possible, follow
this short guide. Please refer to the rest of the manual for detailed operating instructions.
Connect your guitar/bass to the IN jack of the Wahoo.
Connect your amplifier to the
Set the
LOCK
switch to the locked position (this lets you select presets without worrying about
editing them by mistake).
Connect a suitable power supply: 9VDC,
Select the first factory preset by pressing the button until F00 is shown on the numeric display.
Tap the footswitch to enable the effect. The footswitch
Rock the footpedal back and forward while you are playing to obtain the classic Wah effect. In the
“toe-down” position high frequencies will be enhanced. In the “heel-down” position, low frequencies
will be enhanced and high-frequencies will be muffled.
Next, start exploring other presets using the and buttons. There are 100 factory presets
labelled as F00–F99, then 100 user presets labelled P00–P99. If you press and hold or you can
increment or decrement in steps of 10 so you can quickly select the preset you want.
To get started, we suggest you select from the following:
Thank you for purchasing a sonuus Wahoo. Like all sonuus products, the Wahoo is the culmination
of ground-breaking innovation and considerable technical expertise. We are delighted that you have
chosen to purchase a sonuus Wahoo and we anticipate that it will greatly enhance your music
making. This manual is a comprehensive guide to the Wahoo but if you have any questions, we offer
attentive customer support via our on-line user forum:
www.sonuus.com/forum
The Wahoo is a dual analogue filter stomp box. It is packed with innovations from the sonuus
Research Team.
Analogue signal path with digital control
The Wahoo’s fully analogue signal path is based on vintage synthesizer filters, and gives the warm
organic tone that is possible with only analogue electronics. We have combined the analogue signal
path with digital control for precision and configurability.
Dual analogue filter design
The Wahoo has two analogue filters, each of which can be configured as low-pass or band-pass and
can operate independently in wah pedal,
output can be configured to give evolving textures and tonal depths that cannot be achieved with a
single filter.
Ground-breaking pitch-tracking effects
The Wahoo uses sonuus’ proven, and highly acclaimed, pitch-tracking technology to create unique
pitch-bend and pitch-tracking effects—effects that have never been available before.
LFO
, envelope and pitch-tracking modes. The dual filter
Unique patented InfiniQ pedal sensor
Most wah pedals operate using a potentiometer (a pot) which wears out quickly resulting in the
effect becoming scratchy. These also have mechanical couplings which limit fine control and let dirt
inside the unit, so compromising reliability.
Some other wah pedals use optical methods which are susceptible to dirt and interference from
stage lighting, and these also have mechanical couplings.
For the Wahoo, we designed a brand new type of position sensor, InfiniQ, that allows super-fine
precision control with no mechanical couplings. As a result, the pedal control on the Wahoo won’t
get scratchy and will never wear out!
For guitar and bass
The Wahoo is designed from the ground up to be perfect for guitar and bass. We know that many
musicians play both instruments and don’t want to compromise when an effect is designed for the
higher or lower frequencies of these instrument: the range of the Wahoo parameters can perfectly
match guitar and bass, and you can save and switch between instrument-specific set-ups.
Of course, the Wahoo can also be used on other instruments such as keyboards. You don’t need to
restrict your creativity to guitar and bass!
Transparent-true-bypass
True-bypass means that the effect is completely switched out of your signal chain when bypassed
to preserve the integrity of your guitar/bass signal. This is typically done by mechanical switches but
these cause clicks or pops when switching.
For the Wahoo, we designed a silent-switching true-bypass circuit so you get the benefits of truebypass without the associated switching noise. What’s more: if the power to the Wahoo is
interrupted, the unit will automatically switch back to the bypassed state so you don’t lose your
instrument’s signal.
Stage-ready
The Wahoo is designed to be ideal for gigging on stage:
•Heavy-duty cast aluminium case that will stand up to years of heavy use.
•The pedal won’t decide to get scratchy just before a crucial gig!
•Variety of power sources: any polarity 9V for maximum convenience,
batteries.
•Foot-operated preset selection.
•
LOCK
switch to prevent accidental changes to settings or presets.
Presets
The Wahoo comes ready-to-play with 100 factory presets which include traditional wah effects,
touch-wah, bass envelope filters, auto-wah, bubbly funk, vocal sounds and extreme synth-like special
effects. Without making any adjustments, the Wahoo is ready to play, straight out of the box.
The 100 factory presets is just the starting place! By tweaking these presets you can explore
different sounds and create your own effects—there are 100 user presets where you can store your
own set-ups.
USB
and high-capacity AA
www.sonuus.com
We recommend that you visit our web site and register your new Wahoo. This is required for direct
warranty support. Once you have registered, you have access to firmware updates and you can opt
to receive updates and news from sonuus:
register.sonuus.com
To get assistance or to share your experiences with other Wahoo users, register on our user forum:
If you move or press a knob or touch the
mode and enter Preset Edit mode. (Now the buttons won’t let you select presets.)
The button named save has dual functionality. When held for 2s, it acts as a cancel button.
This lets you undo any preset editing you have done and takes you back into Preset Select
mode.
FILTER
button, the Wahoo will leave Preset Select
Page 7
Owner’s Manual
Connecting the Wahoo
The simplest way of connecting the Wahoo is between your guitar and amp: connect the output of
your guitar to the input (IN) of the Wahoo. Connect the output (
input.
When using other effects in your signal chain, there is no right or wrong effect order — experiment
to see what you can do, and be creative.
Typically, time-based effects such as reverb and delay are placed after the Wahoo so that these
effects are applied to the Wahoo’s sound.
When using distortion, the effect of connecting this before or after the Wahoo are very different.
When distortion is used after the Wahoo, the effect can be quite subtle, and any noise from the
Wahoo can be enhanced (particularly with high-gain distortion effects). When distortion is placed
before the Wahoo, the Wahoo is able to shape the harmonically-rich signal from the distortion to get
more sonic variation. This also has the advantage of not boosting any noise produced by the
Wahoo.
You can also connect the Wahoo to the effects loop of your amp: connect the output of your guitar
to the input of your amp, then connect the “send” of your amp to the Wahoo IN, and the
Wahoo back to the “return” of your amp. Depending on your amp this can give rise to excessive
noise if the signal level in the effects loop is too small. If you try this, it is best to set the effects loop
level to +4dBu if you have that option.
The Wahoo can be powered by batteries, by a 9V DC power supply (neither of these is supplied), or
by
USB
. Select one of the following:
•insert 4 AA batteries (alkaline can be used, but we recommend rechargeable NiMH batteries)
into the battery compartment in the base of the Wahoo. WARNING: observe correct polarity!
•plug the output of a 9V DC power supply into the port labelled DC on the back of the Wahoo.
The 9V DC power supply that you use should be capable of providing 500mA and have a
2·1mm centre pin connector. Note that the Wahoo has been designed so that either polarity
(tip-positive or tip-negative) can be used.
•plug a
Note that there is no problem if you connect all three power sources at once. The DC supply takes
priority, then
needed and allows you to connect via
USB
on the back of the Wahoo. If a
cable connected to your computer or a
USB
hub is used, it may need to be a powered hub to ensure it
can provide enough current to the Wahoo.
USB
, then the batteries. This ensures your batteries are not drained when they are not
USB
without using
USB
power supply into the port labelled
USB
power when a DC supply is present.
USB
Top Tip:If you are using the Wahoo on stage, use a DC power supply and batteries. That
The Wahoo is switched on when you connect
way, if the DC power supply is pulled out for any reason, the Wahoowill switch to
batteries and you will, in effect, have an un-interruptible power supply.
USB
or DC. When running from batteries, the Wahoo
is switched on when an instrument cable is connected to IN. To prolong battery life, disconnect the
cable from IN when the Wahoo is not being used.
Enabling and bypassing the Wahoo
The main footswitch
When this
output (
LED
OUT
). This connection is known as a true-bypass connection because in this state none of
the Wahoo electronics are connected to the signal which keeps your original guitar/bass signal as
pure as possible.
When this
LED
(filtered) signal.
The effect is enabled and disabled by briefly pressing the footswitch. Alternatively, when the
footpedal is moved to the toe-down position, the effect will automatically enable. This emulates the
behaviour of a classic Wah pedal which has a footswitch placed under the footpedal. Note that this
feature can be turned off using the custom settings (page 30).
is off, the effect is completely bypassed and the input (IN) is directly connected to the
is on, the signal is passed through the Wahoo and the output (
OUT
) is the effected
Page 9
Owner’s Manual
Note that if this
LED
is flashing, it means the Wahoo is in foot-operated preset selection mode (see
page 11).
Footswitch LED
Off:Effect is completely bypassed (the Wahoo has no effect on your sound).
On:Effect is active and the Wahoo will affect your sound.
Flash:Foot-operated preset selection mode is active. The bypassed/enabled state of
the Wahoo does not change in this mode but remains in whichever state it was
in before this mode was activated.
Selecting a factory preset
There are 100 factory presets in the Wahoo. They configure the Wahoo into a variety of set-ups,
from traditional wah to sonuus’ unique pitch tracking filter effects. A summary of factory presets is
at the back of this manual (page 35).
The Wahoo has two modes: Preset Select mode and Preset Edit mode. By default, it is in Preset
Select mode and the display alternates between the 3-character preset name and the preset
number: either F00 – F99 for factory presets 0 to 99 or P00 – P99 for user presets 0 to 99.
If the display does not periodically show F/P00–99, then to enter preset mode do the following.
Enter Preset Select mode
If the display is not showing a factory or user preset (F00– F99 or P00–P99), the Wahoo is
in Preset Edit mode: exit this mode by pressing and holding the save button for 2s.
Alternatively, slide the
Select mode when locked).
LOCK
switch to the locked position (the Wahoo is always in Preset
Once the Wahoo is in Preset Select mode, select a preset using the buttons. A single press on
either button will increment/decrement the preset number by one. If you press and hold either
button, the preset number will increment/decrement in tens.
Top Tip:Envelope effects have been designed for an instrument with a standard output
level. If your instrument has an unusually high or low output the presets may not
sound correct— either too responsive or not responsive enough. Use the
custom SEn parameter to adjust the sensitivity of your Wahoo (see page 30).
Your Wahoo is now ready to play. Select different presets and experiment with the wide variety of
sounds that are possible.
For pedal effects (F00–F19), as you play move the footpedal in time to the music to create the wah
sound. For envelope (touch) effects (F20–F39) the wah effect is controlled by how hard to play. For
LFO
(auto) effects (F40–F59) the filters will move on their own, but the footpedal can be used to
control their tempo between preset limits. See “Factory presets” on page 35 for a summary of the
factory presets.
While you are playing, you may accidentally bump a switch or button which will take you into Preset
Edit mode. To prevent this, and stay in Preset Select mode, you can slide the
locked position. Alternatively, just re-enter Preset Select mode as described above.
LOCK
switch
LOCK
switch to the
On the back panel of theWahoo there is a slide switch labelled
LOCK
. When this switch is in the
locked position, the Wahoo is in Preset Select mode and none of the parameters can be edited or
saved: the only thing that you can do is change between presets. If you try to make a change when
locked, LoC is shown briefly on the numeric display.
Top Tip:When the Wahoo is locked, you can quickly move between presets using the
LOCK
mode is ideal for gigging, when you want to switch from one preset to another but be sure that
you won’t accidentally make changes to your set-up. When the
LEVEL
knob.
LOCK
switch is in the unlocked
position, you can tweak the Wahoo settings and save new presets.
Top Tip:When the Wahoo is locked, the
the configuration of the preset. For example, if both filters are active,
and 2
LED
be lit.
s will be lit. Similarly, if the effect is pedal-controlled, the pedal
Preset selection using the buttons and the save button was described in “Selecting a factory
preset” on page 9. There is an alternative method of preset selection using the footswitch and the
footpedal. This has been specially designed to make it easy to change presets when you are gigging.
Using this method, you don’t have to bend down and select presets using your hands.
Preset selection using the footswitch and footpedal
Enter preset mode by pressing and holding the footswitch until the footswitch
The time you have to hold for has a default value of 2s, however this is a custom parameter
that you can change (see “Custom settings” on page 30).
To increase the preset number, put the footpedal in toe down position (the button
flashes to show that the preset number will increase) then tap (press and release) the
footswitch the desired number of times until you reach the preset number you want. To
decrease the preset number, move the footpedal to heel down position (the button
now flashes) then tap the footswitch until you reach the preset you want.
When you have reached the preset number you want, you can play and even change
presets while playing. However, while in preset select mode you can’t enable or bypass the
effect: to do this you have to exit preset mode by pressing and holding the footswitch until
the footswitch
time to enter it.
LED
stops flashing. The hold time to exit preset mode is the same as the hold
LED
flashes.
LED
LED
Preset selection with the footpedal in effect on/off mode
When the footpedal is configured to be in effect on/off mode (setting the custom
parameter P.En to o.Lo or o.hi — see “Custom settings” on page 30) the method
described above is replaced by another method. In this case, the footpedal is not used and
foot-operated preset selection is always active. In addition, the footswitch is no longer used
to enable/disable the effect.
Like the method described above, the footswitch is used to increment or decrement the
preset (the direction being shown by the flashing of the or button
on the footswitch (default press time of 2s) will toggle the direction of preset selection.
Note 1: In foot-operated preset selection mode, you can only step through the presets one
at a time (not in tens as you can if you use the and save buttons). We therefore
recommend that for a gig, you make sure that you save the presets you want to use close
in number to one another.
Note 2: In foot-operated preset selection mode, you can still use the buttons as
normal to select presets, and to increment/decrement in 10s if required.
You can create and store up to 100 user presets on the Wahoo. The steps for creating a preset are
straight-forward.
Creating and saving a user preset
Ensure that the
user), adjust the Wahoosettings using the
musical effect. These settings are discussed in detail later.
Save the preset. Press the save button. Use the buttons to select a user preset
number (P00–P99) where you would like to store your preset. The name of the existing
preset (if any) flashes alternately with the preset number to help you select either an
unused preset or a preset to overwrite. Press the save button again when you have
selected your preset number. You can now edit the three-character preset name. Using any
one of the three knobs (
press a knob to advance to the next of the three characters in the preset name. Finally,
press the save button to write your preset to the chosen location.
The save button flashes while this save process is in progress. To abandon the save at any
time, and revert to Preset Select mode, press and hold the save button for 2 seconds.
LOCK
switch is in the unlocked position. Starting from any preset (factory or
LEVEL, FILTER
LEVEL, FILTER
or
MODE
) turn the knob to cycle through A-Z, 0-9 and
and
MODE
knobs to get the desired
Selecting and changing parameters
When you press the
Wahoo will enter Preset Edit mode. The flashing
displayed on the numeric display. Pressing a knob will let you select another parameter to
be edited. For example, successive presses on the
drive, filt mix 1/2, dry/wet and output.
Change the value of a parameter by turning the knob next the that parameter’s
you have the value that you want for that parameter, select another parameter to edit.
When you have completed your editing, you can save your setup as described previously.
Some parameters have sub-parameters. For these, the buttons will also flash. Cycle
round the sub-parameters using the buttons. The name of the sub-parameters is
shown on the display to make it clear what is being selected for editing. Turn the knob to
change the value of the sub-parameter that is being edited.
All of the filter parameters and the mode parameters can be set independently for each of
the two filters. Select which filter to edit by using the
and filter 2. The filter whose settings are being altered is indicated by the illuminated filter
A setlist is simply a list of presets that you want to use in your “set” during a performance. The setlist
feature of the Wahoo lets you define which presets you want to use and makes all other presets
unavailable. This way you can easily move between your desired presets without getting lost (the
Wahoo has a lot of presets!).
To use the setlist feature you must use the Desktop Editor, available free from:
http://software.sonuus.com
There are 6 setlists available (A–F) as well as a built-in demo setlist that you can’t edit. Once you have
configured a setlist you can make it active using using the SET parameter; see “Custom settings” on
page 30. The setlist doesn’t become active until you lock the Wahoo.
Normally, presets can be selected by
matches the preset number. Setlists give you more flexibility, allowing you to choose any program
number for any preset (this also selects which program change messages are sent when you select
a new preset on the Wahoo; very useful when controlling other effects from the Wahoo).
Setlist are a great way to tailor the Wahoo for your performance without modifying or moving
presets. It lets you focus on your performance, knowing that the sounds you need are available when
you need them.
The level parameters apply to the input and output of the Wahoo rather than to the individual filters.
ParameterSub-parameterRangeDescription
drive0–100Gain of pre-amp feeding the filters.
filt mix 1/20–100
dry/wet0–100
outputout0–100Signal level at the output jack.
thr0–200
Proportion of filter 1 and filter 2 that form output signal
0 gives 100% filter 1; 100 gives 100% filter 2.
Proportion of original instrument signal that is mixed into
the output of the Wahoo.
Threshold: noise gate threshold. 0 means the noise gate is
inactive, increasing the value increases the signal level at
which the noise gate becomes active.
The Wahoo signal chain is shown below.
LEVEL
drive. The Wahoo uses warm-sounding analogue filters. As the signal feeding the filters is
increased, the filter sound begins to distort and add pleasing harmonics to the signal. Turn the drive
down for the cleanest sound, but if the drive is too low the signal will become noisy. Turn the drive up
for lower noise, and warmer sounds: but if it is turned up too high the sound will become fuzzy, which
can itself be a desirable effect.
LEVEL
filt mix 1/2. This controls the filter mixer: the proportion of filter 1 and filter 2 that form the
output of the Wahoo. 0 gives 100% filter 1, 100 gives 100% filter 2. Note that, to make editing
simpler, the active filter will automatically switch to 1 or 2 when 100% of that filter is selected.
LEVEL
dry/wet. This lets you mix the uneffected instrument’s signal into the effected output of the
Wahoo. 0 (dry) means that the output of the Wahoo is entirely the thru’ signal,
unaffected by the Wahoo filters. 100 (wet) means only the filtered sound is present in the output.
This parameter be used to retain some of the sonic character of the original instrument sound. For
example, for bass envelope filtering it is common to retain some dry signal to ensure the initial attack
of notes is retained.
LEVEL
output (out). Typically you adjust the output level so there is a good balance between the
original sound (when the effect is bypassed) and the effected sound. It is possible to increase the
output level to boost the signal beyond the level of the original instrument level which can be useful,
for example, to overdrive the input stage of a valve amplifier. Note that at high output settings, the
output stage will start to soft-saturate. This lets you achieve louder sounds without worrying about
unpleasant clipping, regardless of how hard you play.
LEVEL
output (thr). Some presets, depending on the resonant filter setup (see the next section for
a discussion on filters), have an audible output with no input signal. If you want to remove this, you
can do so by adjusting the output threshold, thr, sub-parameter until the sound disappears. The
threshold sub-parameter acts like a noise gate by moving the filter cutoff frequency to a lower-thanaudible frequency when the input level is below the threshold you set. Because this is not a true
noise gate, you may hear a frequency sweep as the frequency moves when the signal level falls to
below the threshold you set. Note that gate attack is a global setting (see “Custom settings” on
page 30).
Adjusting
All of the filter parameters apply individually to each of the two filters. You can select the parameter
to edit, then switch between filter 1 and filter 2, or you can select a filter and then cycle through all
the parameters for that filter, or you can do a combination of these—the order in which you edit is
flexible.
ParameterSub-parameterRangeDescription
Q-hi0–100Q of the filter at freq-hi.
Q-lo0– 100Q of the filter at freq-lo.
freq-hi10–4·00Cutoff frequency of the filter in Hz (kHz).
freq-lo10–4·00Cutoff frequency of the filter in Hz (k Hz).
shapeCur
ShpLo
Lo9–Lo1,
Lin,
hi1–hi9
bnd
FILTER
Curve: controls how the filter cutoff control is mapped
onto the filter’s cutoff frequency.
freq-hi, freq-lo. The cutoff frequency of the filter can be set by entering the value in Hz.
The cutoff can range from 10Hz (which is lower than you can hear) up to 4000Hz. Values above
999Hz are shown in kHz (
It is simple on the Wahoo to create reverse (inverted) filter sweeps: simply set freq-hi to be
smaller than freq-lo.
“hi” and “lo” refer to the modulator position: when the footpedal is in toe-down position (or
the envelope follower is at a maximum), the value freq-hi is used, whether this is greater
than, or smaller than, freq-lo.
FILTER
shape. A musical sound contains many frequencies. A filter is used to remove some of these
frequencies and to enhance other frequencies. The simplest filter to understand is a low-pass filter.
It is named after the part of the frequency spectrum that remains after the filtering has happened. A
low-pass filter filters out (removes) high frequencies and allows low frequencies to remain (to pass).
The frequency above which the high frequencies are removed is called the cutoff frequency, fc.
The Wahoo filters can be configured as low-pass or band-pass filters. A band-pass filter removes
frequencies above and below a specified frequency and only allows those frequencies in the
specified band to pass. The diagram below shows the frequency response of a low-pass and of a
band-pass filter. The centre frequency, rather than the cutoff frequency, is defined for a band-pass
filter, both are shown as fc.
Note that frequencies above the cutoff frequency do not immediately fall to zero. The slope of the
curve beyond the cutoff frequency is called the filter roll-off and is a characteristic of the filter. The
roll-off is measured in dB per octave and the low-pass filter in the Wahoo has a roll-off of 24dB per
octave. The band-pass filter has a roll-off of 12dB per octave on each side of fc. Note that this means
the low-pass filter is more effective at removing frequencies above fc than the band-pass filter.
The shape of the filter around the cutoff frequency is another characteristic of the filter and is
represented by the parameter Q (or resonance). A high value of Q is associated with a “peaky” filter
which has high gain at the cutoff frequency. At maximum Q the Wahoo filters will self-oscillate at fc
even with no input signal.
Unlike other filter effects, the Wahoo lets you dynamically change the filter Q as the cutoff frequency
changes by using the Q-hi and Q-lo parameters. This gives you enhanced control of the sonic
character of the filter and makes it easier to emulate vintage filter effects.
Different effects are achieved using low-pass and band-pass filtering. Low-pass filtering will retain
more of the original signal’s low end, whereas band-pass filtering can often introduce more character
into the sound.
FILTER
curve. Changing the curve lets you adjust the “feel” of the footpedal, or the response of the
envelope tracker. Take the example of using the footpedal to control the cutoff frequency of the filter.
Normally the filter cutoff, from freq-lo to freq-hi, is mapped linearly to the output via the position of
the footpedal. The minimum filter cutoff is usually achieved with the footpedal in heel down position
and the maximum with the footpedal in toe down position. The filter cutoff is controlled linearly by
the position of the footpedal when the footpedal is between its two extreme positions.
The Wahoo allows you to change this mapping from linear to the curves shown below.
This allows you to have more control and configurability of analogue filters than has ever been
possible before. If you select one of the lo curves, the filter cutoff changes more rapidly towards the
end of the travel of footpedal towards the toe down position. The hi curves change the filter cutoff
more rapidly at the start of the travel of the footpedal from the heel down position.
If this seems a little complicated, the best way of remembering how lo and hi work is that a lo curve
spends more time near freq-lo, while a hi curve spends more time near freq-hi. The higher the
number
i.e.,
Lo9 rather than Lo1, the more pronounced the effect.
For simplicity, we started with the example of how the footpedal controls the filter cutoff. However,
in
LFO
, envelope and pitch modes, the same principle holds. Don’t worry too much about how this
parameter works—simply adjust Cur to get the sound you want!
Vocal sounds
To get very vocal-sounding filter effects, you must use both Wahoo filters working together (
operating in the same mode so that they track each other). Doing this lets you approximate the pairs
of dominant resonances that are present in the vocal tract when forming vowel sounds. See
“Creating vowel sounds” on page 27 for a table of which cutoff frequencies to set to get various
described above. Each of the two filters has one mode, selected from pedal,
controls of the Wahoo work slightly differently from the
MODE
LEVEL
and
LFO
, envelope or pitch,
FILTER
controls
and the mode for each filter can be different. Configure each filter separately, switching between
them using the
FILTER
button. For each filter, press the
MODE
knob to cycle through the modes,
stopping on the operating mode you want for this filter. Use the buttons to cycle through the
sub-parameters for this mode and turn the
MODE
knob to change the values of the sub-parameters.
You do not need to set up values for the sub-parameters of the other modes for this filter—you only
set up the single mode that you have selected for this filter.
When both filters are in the same mode they can work together to create thick, vocal tones. When
the filters are in different modes you can get new interesting effects.
Note: the custom parameters are covered later in this manual (see “Custom settings” on page 30).
They operate separately from the four modes described above.
Pedal mode
If you select pedal mode for a filter, you can select standard wah pedal operation or
operation by setting the value of the pedal parameter as described in the following table. For details
on
MIDI
operation, refer to “
MIDI
operation” on page 28.
Pedal parameter valueDescription
PEdpedal: The Wahoo footpedal controls the filter: standard wah pedal mode.
CtLcontrol:
rEMremote:
notnote:
MIDI
expression controller (14-bit) controls the filter.
MIDI
cut-off and resonance controllers (7-bit) control the filter.
can be controlled precisely and can even be synchronised with a sequencer using
on page 28). The following sub-parameters configure the
LFO
sub-
parameter
tPo
tyP
bPM10– 999Sets
bP.h10– 999
bP.L10 –999
di.PoFF, on
div
di.h
ShP
r.uP0 –100
r.dn0 –100Ramp down: only available for trapezoid.
StEoFF, 1–16Step: quantizes the
rtGoFF, onRetrigger the
-F1
tAP
PEd
Syn
16, 8, 6, 4, 3, 2, 1,
1
/2, 1/4, 1/8, 1/
16, 8, 6, 4, 3, 2, 1,
1
/2, 1/4, 1/8, 1/
Sin
tri
Sqr
S.uP
S.dn
trP
rnd
RangeDescription
16
16
LFO
) controls the filter cutoff. The speed of the
LFO
.
Type of
LFO
tempo in bpm
derived from filter 1’s
pedal is used to tap a tempo
pedal controls max (bP.h) and min (bP.L) bpm
sync’d to
clock:
LFO
(only available for filter 2)
MIDI
clock
LFO
tempo in bpm. Only available if tyP is set to tPo.
bpm high: bpm when footpedal is in toe down position.
Only available when tyP is set to PEd. bpm is interpolated
between bpm-high and bpm-low depending on the
position of the footpedal.
bpm low: bpm when footpedal is in heel down position.
Only available when tyP is set to PEd.
Enables pedal-control of div. When enabled, di.h set the
clock multiplier at the toe-down position, and div sets the
clock multiplier at the heel-down position. Between these
extremes, intermediate clock multipliers will be used (if
available).
Clock multiplier. For example, if the clock is 120bpm and
div is set to 1/2 , the
Clock multiplier when pedal is in toe-down position. Only
available when di.P = on.
Shape of
LFO
LFO
waveform:
clock will run at 60bpm.
sinusoid
triangle
square
saw up
saw down
trapezoid
random
Ramp up: only available for trapezoid. See below for details
on how trapezoids are set up.
The diagram below shows examples of the different shapes of waveforms, selected using the ShP
sub-parameter. The random waveform takes a different random value every cycle (the cycle is
defined by the bPM and div sub-parameters).
RangeDescription
Delay in seconds over which the
retrigged. Only available if rtG is on.
Phase: controls the phase of the
For filter 2 with tyP set to -F1, this controls the phase of the
LFO
relative to the
For
LFO
s where rtG is on, this controls the starting point of
the
LFO
when it retriggers.
LFO
of filter 1.
LFO
LFO
“grows” after the
.
LFO
is
The trapezoidal waveform is highly configurable: examples of trapezoidal waveforms are shown
below. In the Wahoo, the shape of the trapezoid is controlled by the parameters ramp up and ramp
down, referring to the left and right sides of the waveforms shown. One cycle of the trapezoid
waveform is represented by 100 time units. The sum of ramp up and ramp down cannot exceed 100.
If the sum of ramp up and ramp down is less than 100, the remaining time is split evenly between t
and tb shown below.
Using the trapezoid waveform, you can generate a square wave (ramp up = ramp down = 0), a
triangular wave (ramp up = ramp down = 50), a saw-up wave (ramp up = 100, ramp down = 0) and
a saw-down wave (ramp up = 0, ramp down = 100) in addition to trapezoidal waveforms.
The sub-parameter tyP, lets you select the
as a tempo (tPo) using the bPM sub-parameter; for filter 2 it can be sync’d to filter 1’s clock (-F1);
tempo can be tapped using the footpedal (tAP); tempo can be controlled by the footpedal position
(PEd), where the extremes of the footpedal position have bpm values bP.h and bP.L; or the clock can
be sycn’d (Syn) to external
The tempo is in beats per minute, bpm. The sub-parameters bPM, bP.h and bP.L have a range
between 10 and 999. To achieve slower and faster tempos, the div sub-parameter multiplies the
value of the tempo set by the tyP clock source. As an example, if filter 1 tyP is tPo, bPM is 120bpm
and div is 2, and filter 2 tyP is -F1 and div is 1/2, then filter 1 has tempo of 240bpm and filter 2 has
tempo equal to 1/2 of 120,
If filter 2 is sync’d to filter 1 (tyP is -F1), then the PhA parameter is used to control the phase offset
between the filters. PhA set to 0 means that the filters are in-phase; PhA set to 32 means that the
filters are out-of-phase, and settings in-between give degrees of out-of-phaseness. The figure below
shows a sinusoid and two examples of different values of the phase offset, PhA.
Envelope mode
In envelope tracking mode, the following sub-parameters are used:
MIDI
i.e.,
60bpm.
clock.
Envelope
sub-
RangeDescription
parameter
SEn0– 999Sensitivity: how sensitively the filter follows the envelope.
PunoFF, 1–200Punch: boosts sensitivity when a new note is detected.
Att0–200Attack: how quickly the filter follows an increase in signal.
dEC0 –200Decay: how quickly the filter follows a decrease in signal.
Steps: quantises the envelope. Rather than a smooth
sweep, the filter moves in steps to create a more rhythmic
sound.
Page 24
Owner’s Manual
Envelope
sub-
parameter
PEdoFF, on
SE.h
Pu.h,
At.h
dE.h
St.h
0–999
oFF, 1–200
0–200
0–200
oFF, 1–31
In envelope tracking mode, the filter cutoff control follows the signal level. The cutoff control
increases and decreases as the signal becomes louder and quieter. SEn, the sensitivity subparameter, controls how sensitively the filter follows the signal envelope — a high value means that
the filter will move easily with gently playing; a low value means that you will have to play hard to get
the filter to move much. Att and dEC control how quickly the follower reacts to an increase and
decrease in signal loudness, respectively. Pun lets you accentuate the filter response to new notes
by providing a boost in sensitivity but only for new note edges, thus making it easier to create
punchier, more dynamic sounds. This effect is most obvious with low values of SEn and dEC.
Note that the sensitivity can also be used to tweak the envelope tracker for different musical
instruments: for example, a high output bass and a low output bass may need different values of
sensitivity to get the same feel. However, we recommend that the global SEn parameter in custom
(see “Custom settings” on page 30) is used instead to adjust for instrument characteristics so that
it is easier to switch between different instruments and to make it easier to exchange presets with
other users.
RangeDescription
Pedal control. When enabled, you can smoothly morph
between two envelope filter settings. SEn, Pun, Att, dEC, StE are used when the pedal is in the heel-down position,
and SE.h, Pu.h, At.h, dE.h, St.h are used when the pedal is
in the toe-down position. Between these extremes,
interpolated values are used , ensuring a smooth transition
from one envelope setting to another.
Only available when pedal control (PEd = on) is enabled.
Pitch mode
If a filter is in pitch mode, the following sub-parameters are used:
Pitch subparameter
tyPbEn
Att0–200Attack: how fast the filter follows pitch changes.
Semitones: maximum pitch bend in semi-tones.
(Only available if tyP is bEn.)
Page 25
Owner’s Manual
Pitch subparameter
rEFbot
FrE−99–99
Ctr
toP
RangeDescription
Pitch bend reference: defines whether the starting point of
a bend is (only available if tyP is bEn):
bottom
centre
top
Frequency: pitch tracking frequency offset (tone).
(Only available if tyP is trA)
The pitch mode can be set to either pitch-track or pitch-bend using the tyP sub-parameter. These
innovative effects use sonuus’ unique, highly acclaimed, pitch detection and tracking technology.
Top Tip:Pitch tracking is monophonic (it can only track single notes) but you can still
play chords in pitch mode: the Wahoo will track the dominant note. For best
control of the effect in pitch mode, play single notes clearly.
Pitch-track (trA). In pitch-track mode, the cutoff frequency of the Wahoo filter is set to follow the
pitch of the notes that you play. There are three parameters that control how this happens. The pitch
tracking can be offset from the pitch of the notes you play by adjusting the FrE frequency subparameter— a positive number can move the filter frequency higher by up to 4 octaves; a negative
number can move the filter frequency lower by up to 4 octaves. The other two parameters that
control the pitch tracking are freq-hi and freq-lo in the filter set-up. The pitch tracking frequency is
limited to always be between freq-hi and freq-lo. You can picture pitch tracking as a filter that moves
with the pitch of your notes within frequency limits you define ( just like when a synthesizer’s filter is
set to “keytrack” mode). It allows you to create interesting tonal effects, including synth-like sounds,
for example by configuring a low-pass filter to remove the harmonics of your instrument’s signal to
leave only the fundamental tone. The tracking will only follow your playing exactly when the curve
sub-parameter of the filter ShP parameter is set to linear (Lin). If one of the other setting is selected
(Lo9–hi9), you will change the point at which the filter follows your playing. Although this will be less
predictable, you can create some nice effects like this.
Pitch-bend (bEn). In pitch-bend mode, when you bend a note, the cutoff frequency of the filter
moves. You set how much of a bend should map onto the maximum cutoff control— this is set in
semitones via the S.tn sub-parameter and can be between 1 and 36 semitones. Obviously, the larger
values are not applicable to note-bending with your fingers; they apply to bending using a whammy/
tremolo bar. The extremes of the pitch-bend are then mapped to the values of freq-lo and freq-hi:
the limits you have set for the filter cutoff frequency. The reference point of the bend is set by the rEF
sub-parameter. The reference point is the filter cutoff frequency before you apply a bend. For
example, if the reference is bottom, then the filter cutoff is at freq-lo before you bend. Bending up by
S.tn causes the filter cutoff to increase to freq-hi. The effect of different reference points is shown
in the diagram below.
instrument setting in the custom settings (see “Custom settings” on page 30)
to select between guitar, 4-string bass and 5-string bass.
Page 27
Owner’s Manual
Creating vowel sounds
To create convincing vowel sounds, you need to use both Wahoo filters working together to produce
the characteristic frequency components of the desired vowels. The table below shows typical
cutoff frequencies that can be set on each filter to obtain each vowel sound. Note that these values
are approximate and are a good starting point. From here you can adjust the frequency and Q of
each filter and experiment to see what sounds most vowel-like to you. Also try configuring one filter
as band-pass and the other filter as low-pass to get variations of the sound.
How to use: to go from “ee” to “ah”, set freq-lo to the “ee” values, and freq-hi to the “ah” values.
Vowel
ee3002700i4002500
ah8001200e6002300
aw600800u5001100
oo350800uh7501400
ae8002000er5001600
Top Tip:Make editing of vowel sounds trivial by using the Wahoo Desktop Editor. This
gives you a graphical representation of the vowels so you can simply drag the
filters to get any vowel sound you desire, quickly and easily.
It is possible to control the Wahoo with
example, the footpedal always sends 14-bit expression controller messages on
can use the Wahoo to control synthesizers.
MIDI
input or to use the Wahoo as a
MIDI
can also be used to synchronise
MIDI
controller. For
MIDI
channel 0 so you
LFO
s to your
sequencer to ensure their tempo matches that of your song, or to automate preset selection.
Connect the Wahoo to a
to the
USB
port of the Wahoo. The necessary drivers are part of the operating system so your
USB
port of your computer (
OSX
, Windows, Linux) via a
USB
cable connected
computer will automatically configure itself to work with the Wahoo. Once this is done, new
and
MIDI
-out ports will appear, named “Wahoo”. To send
software to the “Wahoo”
software to the “Wahoo”
Top Tip:Using the Wahoo Desktop Editor, you can configure several
The following standard
MIDI
messageChanDescription
Controllers
Expression#11#430Always sent whenever the footpedal is moved.
MIDI
-out port. To receive
MIDI
-in port.
can’t be configured on the Wahoo itself. For example you can choose which
channels are used, and which
Controls filter in pedal (not) mode.
The filter cutoff is set to the frequency of the note within
the limits set by freq-lo and freq-hi.
Battery monitoring
When the battery level is getting low, bAt will periodically appear on the display to warn you.
To see the estimated percentage of battery life remaining, simultaneously press and hold the
FILTER
button and the button. When using batteries, it is a good idea to check the remaining battery
capacity before a performance so that you can replace/recharge the batteries if required.
Note that when DC or
USB
power are available, the displayed battery level will not show the correct
value, but will instead show a value related to the available supply voltage. This is because when an
alternative power supply is available, the batteries are disconnected to prolong their life.
Further configurability of the Wahoo is possible through custom. This lets you change the setup of
the Wahoo to suit your own instruments or personal preferences. For example, you can adjust the
display
LED
studio.
The custom settings are different from all of the other parameters: they affect the Wahoo’s set-up,
not the set-up of the current preset
in a preset, they are stored in the Wahoo itself. They take effect from when they are changed. They
are not changed by switching from one preset to another.
To make changes to the custom sub-parameters, enter custom mode by pressing and holding the
MODE
parameter
LEd401 –100
intgtr
SEn0−60 –60
g.At00–200
brightness to a very low level to prolong battery life or to suit working in a darkened
i.e.,
they are global settings. The custom settings are not stored
knob for 2s.
Custom
sub-
DefaultRangeDescription
LED
brightness: 1 is minimum, 100 maximum. Reducing the
brightness is useful for dark environments and for battery saving.
Instrument (used for pitch-tracking and envelope-tracking)
gtr
bA4
bA5
guitar (perfect for guitar, but also good for 4-string bass. Use this
unless you need optimal pitch-tracking of the lowest notes.)
4-string bass (best to track the lowest notes of 4-string bass, but
also works well with 5-string bass)
5-string bass (best to track the lowest notes of 5-string bass)
Applies a global adjustment for envelope mode sensitivity (SEn)
to compensate for instruments with different output levels.
Gives a range of ±24dB.
Noise gate attack— how quickly the noise gate moves the filter
cutoff frequency when the output falls to below the threshold set.
Pedal enable. Allows you to enable the effect by moving the
footpedal. If set to oFF then this feature is disabled.
The effect is enabled when the footpedal is pressed to the toedown position. The effect must be turned off using the footswitch.
On/off low (heel): the effect is enabled when the footpedal is in
the heel-down position, and is deactivated when the footpedal
returns to this position (after a time set by “pedal effect off time”).
On/off high (toe): the effect is enabled when the footpedal is in the
toe-down position, and is deactivated when the footpedal returns
to this position (after a time set by “pedal effect off time”).
Setting P.En to o.Lo or o.hi affects how footpedal preset selection
works—see “Foot-operated preset selection” on page 11.
Pedal effect time off. Only available if P.En is set to o.Lo, or o.hi.
When P.En is set to o.Lo, or o.hi, this sets the time (in seconds)
that the footpedal must be in the “off” position before the effect is
turned off.
Footswitch time. Time in 500ms steps that footswitch is held to
enter and exit foot-operated preset selection mode.
Power-save timeout. This sets the time to enter a lower-power
state (display goes off) to prolong battery life when the effect isn't
enable.
Show footpedal position. When set to on, =00–=99 is displayed
when the footpedal is moved. This can be used to position the
footpedal in a particular position before enabling the effect.
“Setlist”. Allows selection of demo mode and user-defined setlists.
When enabled, and the unit is locked, only certain presets are
available, making it easier to use the Wahoo live or for
demonstrating its capabilities. See “Setlists” on page 13.
For the avoidance of doubt, opening any part of the Wahoo other than the battery compartment will
always cause your warranty to be invalid.
However, we realise that musicians sometimes make the minor modification of reducing the
footpedal travel by sticking a piece of rubber under the front (heel position) of the footpedal. If you
do this, you will need to follow the pedal calibration procedure below (page 33). Any damage caused
to the Wahoo deemed by sonuus to be caused directly or indirectly by this (or any other)
modification will not be covered by the warranty.
The rubber stop at the back of the footpedal (under the toe position) should never be modified to
avoid damage to the pedal sensor.
Filter calibration
The Wahoo uses analogue filters and a pure analogue signal chain. These analogue electronics can
be sensitive to temperature changes. To ensure presets continue to sound the same each time you
use them, and so you can exchange presets with other Wahoo users and get the same sound, the
Wahoo uses temperature-compensated calibration. Calibration has been done in the factory before
you receive your Wahoo, but you may want or need to adjust this, for example if you are using the
Wahoo in a particularly hot or cold environment.
Calibration has the best results if the Wahoo has been on for at least ten minutes so it can warm up
to a stable temperature. If you calibrate the Wahoo in a warm room straight after you have brought
it in from a cold car, the calibration may not remain accurate as the Wahoo warms up.
For calibration, the Wahoo outputs a tone by making the filters self-oscillate. To see this tone you
need to connect the output of the Wahoo to a tuner that can tune 880 Hz (A5). Enter calibration
mode by simultaneously pressing and holding the
is displayed. Now adjust the
FILTER
button and do the same for the other filter. To save the calibration and exit calibration mode,
press the save button. Alternatively, save and exit calibration mode with another simultaneous press
of both the
If you enter calibration mode accidentally and want to exit without saving, press and hold the save
button to cancel.
FILTER
button and the
FILTER
knob until the output of the Wahoo is 880Hz (A5). Press the
Pedal calibration lets you configure the how much of the travel of the footpedal controls the effect.
Normally you won’t need to do this but if you make modifications such as limiting the travel of the
Wahoo by sticking a rubber stop under the front of the footpedal, then this calibration will be useful.
Enter calibration mode by simultaneously pressing and holding the
for 4s until CAL is displayed. Rock the footpedal from one extreme to the other a few times. Save this
calibration and exit calibration mode by pressing the save button or with another simultaneous
press of the
If you enter calibration mode accidentally and want to exit without saving, press and hold the save
button to cancel.
FILTER
button and the
MODE
knob.
FILTER
button and the
MODE
knob
Warranty
The Wahoo is supported by a limited warranty for a period of one year from the date of purchase.
During this period, any faults due to defective materials or workmanship will be rectified (by repair
or replacement) free of charge. A unit under warranty may be replaced with a reconditioned unit.
The warranty excludes damage caused by deliberate or accidental misuse or modification. It is the
user’s responsibility to ensure fitness for purpose in any particular application. The warranty is
limited to the original purchaser, and excludes any consequential damage or loss.
Proof of purchase date is required for any claim under this warranty.
Warranty claims must be made through the retailer from whom the original purchase was made.
To support new features and to make it future-proof, firmware (internal software) of the Wahoo can
be upgraded.
To update the Wahoo firmware you will need to download the latest firmware file (.sfu) and
Firmware Updater software (which includes an instruction manual). The updater software is
available for both
account at the following web site:
OSX
and Windows. To access these files, you need to register and create a user
register.sonuus.com
To update firmware on the
While powering-on the Wahoo, press and hold:
The numeric display now shows UPd to indicate firmware update mode is active.
Connect the Wahoo to your computer via
Follow the steps in the Firmware Updater manual you have downloaded.
Note: if the Wahoo detects that your firmware is corrupt, it will boot straight into update mode to let
you update the firmware.