Sonuus Voluum User manual

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®
Owner’s Manual
Analogue Volume Effects
Stomp Box for Guitar and Bass
Version 1.0.0
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Owner’s Manual
Important safety information. Read the following information carefully and keep all instructions for future reference.
!
Do not open any part of the Voluum case other than the battery compartment. There are no
user-serviceable parts in the Voluum.
!
Do not expose the Voluum to rain, liquids or moisture of any kind. If this occurs, disconnect the
Voluum 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 Vo l uu m has been stored in a cold environment (e.g., a car) then exposed to a warmer environment (e.g., a warm room), condensation can form on the outside and inside of the Voluum. In such cases the Voluum should be allowed to warm up to room temperature before use to ensure any such condensation has evaporated.
!
Avoid getting anything, e.g., an instrument cable, trapped under the footpedal— this will cause damage to the Voluum footpedal sensor.
!
Only use the correct type of power supply (see “Powering the Voluum” on page 10). The Voluum must never be connected directly to mains electricity.
!
Do not drop the Voluum 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 Voluum. 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 Voluum 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.
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Owner’s Manual

Quick start

This manual is a comprehensive guide to the Voluum. 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 Voluum.
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,
page 10).
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 a classic volume effect. As you rock the footpedal from the “heel-down” position to the “toe-down” position the output volume is increased.
Next, start exploring other presets using the and buttons. There are 30 factory presets labelled F00F29, then 100 user presets labelled P00P99. 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 try the first 10 factory presets:
Preset Description
F00 Classic volume pedal.
F01 Volume boost: use the pedal to add up to 12 dB of gain to your signal.
F02 Gentle compressor.
F03 Clean sustain compressor.
F04 Pedal-controlled compressor: more compression as pedal is moved toe-down.
F05 Classic tremolo: basic tremolo, use the pedal to change the speed.
F06 Envelope tremolo: speed and character of tremolo depends on signal level.
F07 Pulse tremolo: echo-like sounds as the pulse decays with the signal level.
F08 Kill-switch tremolo: use the pedal to emulate using a kill-switch.
F09
ADSR
synth. Combination of all effects to give a synth-like sound.
OUT
jack of the Voluum.
USB
or batteries (see “Powering the Voluum” on
LED
will light up.
Voluum
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Owner’s Manual

Welcome

Thank you for purchasing a sonuus V oluum. Like all sonuus products, the Voluum is the culmination of ground-breaking innovation and considerable technical expertise. We are delighted that you have chosen to purchase a sonuus Voluum and we anticipate that it will greatly enhance your music making. This manual is a comprehensive guide to the Voluum but if you have any questions, we offer attentive customer support via our on-line user forum:
www.sonuus.com/forum
The V oluum is an analogue volume effects stomp box. It is packed with innovations from the sonuus Research Team.

Analogue signal path with digital control

The Voluum’s fully analogue signal path features a high-performance studio-grade voltage­controlled-amplifier ( analogue power supply gives maximum analogue performance and high headroom to ensure even the loudest signals can be processed without artifacts. This high bandwidth, high dynamic range signal path guarantees the smooth sound of analogue circuitry with no digital artifacts.
Combining the analogue signal path with digital control gives you precision and configurability.

Flexible effects chain

The effects chain comprises five effects (noise gate, compressor, limiter) which can be used in any combination.

Unique patent-pending pedal sensor

Most volume pedals operate using a potentiometer (a pot) which has two main problems: the pot sucks the tone from your instrument, and it wears out quickly resulting in the effect becoming scratchy. Pots also have mechanical couplings which limit fine control and let dirt inside the unit, so compromising reliability.
Some other volume pedals use optical methods to avoid the limitations of pots, but these are susceptible to dirt and often don't have fine control or fast response.
sonuus' patent-pending position sensor allows fast, super-fine precision control that isn't susceptible to dirt and grease. As a result, the pedal control on the Voluum won’t get scratchy and will never wear out. Combined with ultra-smooth pedal action with user-adjustable tension, in a rock-solid chassis, the Voluum gives you unrivalled signal level control.
VCA
) with low noise and low distortion characteristics. A constant high-voltage
LFO
(tremolo), volume control and

For guitar and bass

The Voluum 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 specific instrument. Of course, the Voluum can also be used on other instruments such as keyboards. You don’t need to restrict your creativity to guitar and bass!
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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.
sonuus has designed a silent-switching true-bypass circuit so you get the benefits of true-bypass without the associated switching noise. What’s more: if the power to the Voluum is interrupted, the unit will automatically switch back to the bypassed state so you don’t lose your instrument’s signal.

…with the option of buffered-bypass

However, not everyone wants true-bypass. With the Vo l u um you have control over whether you want to use true-bypass, or buffered-bypass. Buffered-bypass keeps the Voluum in the signal path at all times, but passes the input signal without modification when the effect is bypassed. This can be useful when using long cables: the buffered output of the Voluum means these long cables won’t affect your tone, even when the effect is bypassed.

Stage-ready

The Voluum 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 Voluum comes ready-to-play with factory presets that include traditional volume effects and pedal-controlled compressor effects. Without making any adjustments, the Voluum is ready to play, straight out of the box.
The factory presets are 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 set­ups.
USB
and high-capacity AA

www.sonuus.com

We recommend that you visit our web site and register your new Voluum. This is required for direct warranty support. Once you have registered, you have access to firmware updates, the Voluum Desktop Editor Software and you can opt to receive updates and news from sonuus:
register.sonuus.com
To get assistance or to share your experiences with other Voluum users, register on our user forum:
www.sonuus.com/forum
Voluum
© Copyright 2014 Sonuus Limited 5
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Owner’s Manual

What can the Voluum do?

Gate/expander

In its simplest form a noise gate cuts the signal when its level falls below a set threshold. The Voluum noise gate not only gives you control over the threshold, but also enables fine control over how quickly it reacts and how much the signal should be reduced in level. Combined with a smooth transition from open to closed, the Voluum gives you ultra-transparent gating that reduces the noise when you're not playing without introducing any audible artifacts.

Pedal-controlled compressor

Compression is a widely-used effect that compresses the dynamic range of your signal. Essentially, it is used to keep the level of your instrument consistent, regardless of how hard or soft you play. It does this by reducing the level of loud signals, and applying a make-up gain to ensure the apparent loudness stays the same.
The compressor in the Voluum features an intelligent make-up gain which means you only need to think about how much compression you want to apply. This also allows dynamic modulation of the compressor. For example, by using the foot pedal you can smoothly vary the amount of compression being applied without affecting your signal level – another unique sonuus innovation.
Variable attack and release times let you configure the effect to suit your performance and even these can be pedal-controlled.
While other compressors are either on or off, the Vol u u m ’s compressor gives you glitch-free pedal­control to enhance the subtleties of your music.

LFO/tremolo

Tremolo is a classic effect where a low-frequency-oscillator ( instrument.
LFO
The V oluum tremolo sounds with multiple waveforms featuring envelope-, pedal- and depth variation, as well as
Duo mode gives you two
(tremolo) lets you recreate this effect, while giving you many more options. Smooth
MIDI
-clock sync to keep the tremolo in time with your sequencer.
LFO
s to let you get really creative!
LFO
) modulates the volume of your
MIDI
-controlled speed and
Volume—more than a simple volume pedal
A typical volume pedal gives you basic control of your signal level where the pedal replicates the function of the volume knob on your instrument.
The volume effect on the Voluum lets you do the same thing, but without compromising your tone. But just doing that would be boring! Voluum lets you cut or boost the signal level to any level you desire while providing fine control over the feel of the pedal: how its position maps to the volume change. You can also configure fades where the pedal acts as a switch and the volume fades up or
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down smoothly over a chosen time to give you super-smooth fades that are impossible to do by using just foot-control.
In envelope mode, the level change is triggered when you play a new note or strum a new chord.
ADSR
Combine this with built-in

Limiter

The high voltage analogue power rails in the Voluum give great sonic quality, but it means that high output levels can overdrive other effects in your chain. The limiter can be engaged to soft-limit the signal peaks to keep them within the input range of your other effects to avoid nasty clipping distortion.
The limiter can also limit asymmetrically, which can give overdriven signals a sweeter sound.

Control

Unlike other analogue stomp boxes, the effects on the Voluum are not static, where you adjust the parameters to get the one sound you want
Instead, the Voluum has been engineered to make many aspects of each effect controllable so that effect parameters can smoothly go between hi and lo values that you choose. This modulation can be controlled using the pedal, on page 16.)

USB & MIDI interface

The Voluum has a Voluum to control effects, or send
USB-MIDI
allows
make it easy to connect the Voluum to other
USB
connection also allows you to use the Voluum Desktop Editor Software and to use the
The Voluum as a
USB
MIDI
messages to be sent straight to a computer, whereas the 5-pin
USB-MIDI
interface to connect
shaping and you can create synth-like tones from your instrument.
MIDI
controllers or the signal envelope. (See “Effect control methods”
connection and standard 5-pin
MIDI
from the Voluum to control other
MIDI
MIDI
gear to your computer.
MIDI
equipment.
connections. You can send
MIDI
devices.
MIDI
MIDI
connections
to the

Desktop Editor Software

Although you can access all of the effect parameters from the Voluum’s control panel, to make it faster and even more intuitive, we provide a Desktop Editor Software application that runs on both Microsoft Windows and Apple OSX.
The Desktop Editor Software is available once you register on-line: register.sonuus.com
Voluum
© Copyright 2014 Sonuus Limited 7
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Owner’s Manual

Using the Voluum

In the rest of this manual, we cover everything you need to know about the Voluum: from how to connect it to your rig, to how to power it and how to delve in and create your own presets.
Consult the photo of the Voluum shown below to familiarise yourself with the controls and displays.
save/cancel button
numeric display
up/down buttons
LED
meterin g
active button
effect knob
control button
hi/lo button
footswitch
footswitch
s
LED
If you move or press a knob or touch the active or hi/lo buttons, the Voluum will leave Preset Select 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 2 s, it acts as a cancel button. This lets you undo any preset editing you have done and takes you back into Preset Select mode.
footpedal
Cancel an edit / selecting preset mode
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Owner’s Manual

Connecting the Voluum

The simplest way of connecting the Voluum is between your guitar and amp: connect the output of your guitar to the input (
) of the Voluum. Connect the output (
OUT
) of the Voluum to your amp’s
IN
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 Voluum so that these effects are applied to the Voluum’s sou nd.
When using distortion, the effect of connecting this before or after the Voluum are different. When distortion is used after the Voluum, the intensity of distortion can change as the signal level is modified by the Vo l u um . When distortion is placed before the Voluum, the Voluum is able to shape the harmonically-rich signal from the distortion without changing the intensity of the distortion.
You can also connect the Voluum 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 Voluum
, and the
OUT
of the
IN
Voluum 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.
MIDI
operation using the
USB
connector or the
MIDI IN
and
MIDI OUT
connectors is detailed in “
MIDI
operation” on page 31.
Voluum
© Copyright 2014 Sonuus Limited 9
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Owner’s Manual

Powering the Voluum

The Voluum can be powered by batteries, by a 9V DC power supply (neither of these is supplied), or
USB
. Select one of the following:
by
insert 4 AA batteries (alkaline can be used, but we recommend rechargeable NiMH batteries)
into the battery compartment in the base of the Voluum. WARNING: observe correct polarity!
plug the output of a 9V
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 Voluum has been designed so that either polarity (tip-positive or tip-negative) can be used.
USB
•plug a
cable connected to your computer or a on the back of the Voluum. If a can provide enough current to the Voluum. However, sometimes
PC
s) can be noisy or can cause ground loops, which may increase the noise in your signal. If this happens and you want to use the the V oluum will use that instead of
Note that there is no problem if you connect all three power sources at once. The
USB
priority, then
, then the batteries. This ensures your batteries are not drained when they are not
needed and allows you to connect via
DC
power supply into the port labelled DC on the back of the Voluum.
USB
USB
hub is used, it may need to be a powered hub to ensure it
USB
connection, simply connect a 9V DC power supply and
USB
power and you won’t get these noise problems.
USB
without using
power supply into the port labelled
USB
power (typically desktop
DC
supply takes
USB
power when a DC supply is present.
USB
Top Tip: If you are using the Voluum on stage, use a DC power supply and batteries. That
way, if the to batteries and you will, in effect, have an un-interruptible power supply.
The Voluum is switched on when you connect is switched on when an instrument cable is connected to
IN
cable from
when the Voluum is not being used.
On the back panel of the Voluum there is a slide switch labelled
DC
power supply is pulled out for any reason, the Voluum will switch
USB
or DC. When running from batteries, the Voluum
IN
. To prolong battery life, disconnect the
LOCK
switch
LOCK
. When this switch is in the locked position, the Voluum 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.
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
LOCK
switch is in the unlocked
position, you can tweak the Voluum settings and save new presets.
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Enabling and bypassing the Vol u um

The main footswitch
When this output (
LED
OUT
). This connection is known as a true-bypass connection because in this state none of
LED
shows the status of the Voluum effect.
is off, the effect is completely bypassed and the input (IN) is directly connected to the
the Voluum electronics are connected to the signal: this keeps your original guitar/bass signal as pure as possible. (Unless buffered-bypass mode is enabled, see “Custom settings” on page 33, where the Voluum electronics are active, but have minimal effect on your signal.)
When this
is on, the signal is passed through the Voluum and the output (
OUT
) is the effected
LED
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. Note that this feature can be changed using the custom settings (page 33).
LED
Note that if the main footswitch
is flashing, it means the Voluum is in foot-operated preset
selection mode (see page 13).
Footswitch LED
Off:
On:
Flash:
Effect is completely bypassed (the Voluum has no effect on your sound).
Effect is active and the Voluum will affect your sound.
Foot-operated preset selection mode is active. The bypassed/enabled state of the Voluum does not change in this mode but remains in whichever state it was in before this mode was activated.
True-bypass or buffered-bypass?
Voluum
Over the years, there has been much discussion about which is better: true-bypass or buffered-bypass. The answer is: it depends.
Buffered-bypass has the advantage that the low-impedan ce output of the buffer can drive long cable runs without these cables affecting your tone.
True-bypass, on the other hand, ensures the effect has no impact on the instrument signal; useful with large effects rigs where you may want all the pedals to be true-bypass to minimuse their impact when bypassed.
Ultimately, you should use whichever bypass setting sounds best in your rig. It depends on your instruments and the other pedals in your chain, and indeed, the order of these pedals.
© Copyright 2014 Sonuus Limited 11
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Owner’s Manual

Selecting a factory preset

The factory presets configure the Voluum into a variety of set-ups, from traditional volume to sonuus’ unique pedal-controlled compressor effects.
The Voluum 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 Voluum is in Preset Edit mode: exit this mode by pressing and holding the save button for 2 s.
LOCK
Alternatively, slide the Select mode when locked).
Once the Voluum 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.
Your Voluum is now ready to play. Select different presets and experiment with the wide variety of sounds that are possible.
switch to the locked position (the Voluum is always in Preset
Top Tip: Presets can also be selected using the footswitch and footpedal on the Voluum
(see “Foot-operated preset selection” on page 13) or by connecting external footswitches (see “External footswitch connection” on page 35).
While you are playing, you may accidentally bump a switch or button which will take you into Preset
LOCK
Edit mode. To prevent this, and stay in Preset Select mode, you can slide the
switch to the
locked position. Alternatively, just re-enter Preset Select mode as described above.
Top Tip: Envelope-controlled presets (including gate and compressor) have been
12 © Copyright 2014 Sonuus Limited
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 adju st the sensitivity of your Voluum (see page 33).
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Owner’s Manual

Foot-operated preset selection

Preset selection using the  buttons and the save button was described in “Selecting a factory preset” on page 12. 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, h owever this is a custom parameter that you can change (see “Custom settings” on page 33).
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. E n to o.Lo or o.hi — see “Custom settings” on page 33) 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 ef fect.
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.
LED
s). A long press
Voluum
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Owner’s Manual

Creating your own presets

You can create and store up to 100 user presets on the Voluum. The steps for creating a preset are straight-forward.
Creating and saving a user preset
Ensure that the user), adjust the Voluum get the desired 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. Turn the
EFFECT
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
settings using the
knob to cycle through A-Z, 0-9 and press the knob to advance to the next of the
EFFECT
knob and the active and hi/lo buttons to
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Selecting and changing parameters
When you press or move the flashing
LED
shows which effect is being edited. Successive presses on the
cycle between editing the parameters for the gate, compressor,
EFFECT
knob, the Voluum will enter Preset Edit mode. The
EFFECT
LFO
, volume and limiter
knob will
effects.
To include an effect in the signal chain, press the active button. The active button and the
LED
beside the effect will light up to show that the effect is active. The
effects will also be lit, but these will be dimmer and not flashing to show that the effects are
LED
s for other active
active but not being edited.
For each effect that you edit, select the method of control for this effect using the button. The control methods are none (nothing selected), pedal, envelope or
CONTROL
Successive presses of the selected effect. Stop when the
button cycle round the valid control options for the
LED
beside your choice of control for the effect is illuminated.
CONTROL
MIDI
Note that not all control methods are valid for all effects, and each effect (i.e., all the controllable parameter s in that effect) can be controlled by only one method.
Cycle round the effect’s parameters using the  buttons. The name of the 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 parameter that is being edited.
LED
For some combinations of effect parameter and control method, th e hi or lo to show that th e valu e of the parameter being edited applies to the high or low point of th e
will light up
control. For a pedal-controlled pa rameter, hi corresponds to the “toe-down” position, lo to
MIDI
the “heel-down” position. For a maximum and minimum values of the
controlled parameter, hi and lo correspond to the
MIDI
controller. And for an envelope-controlled parameter, hi and lo correspond to the signal becoming louder and quieter. Press the hi/lo button to toggle between the hi and lo values for the parameter b eing edited.
When you have the value th at you want for a parameter, select another parameter to edit. When you have completed your editing, you can save your setup as described previously.
Top Tip: To change the hi and lo values together so that both th e hi and lo of the
parameter are set to the same value, hold the hi/lo button down while you turn the knob to set the parameter value. Note that the hi and lo
LED
s will both light
when you do this to show that both values are being updated.
.
Voluum
© Copyright 2014 Sonuus Limited 15
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Owner’s Manual

Voluum effects signal chain

The Voluum signal chain comprises five separate effects, as shown below.
gate compressor LFO volume limiter
envelope/peak detection
global sensitivity
adjustment
When using individual effects pedals, musicians are careful about the order of the effects chain. One reason for this is because if one effect cuts the signal level, then the next one boosts it to compensate, excess noise can be added to the output signal. Another reason is that often the order of effects can affect the final sound. For example, an envelope-sensitive effect’s sound will change when it is placed before or after a compressor. The Voluum signal chain does things differently.
The limiter is always the last effect in the chain in order to limit the output of the Voluum. But the other effects in the chain can be considered to be in any order—because the effects are all volume­based, and because all of the effects monitor the input signal ( chain (prior to the limiter) is no longer important. This means that, for example, you can apply heavy compression to the signal at the same time as using an envelope-controlled compression affecting the touch-sensitivity of the
Another advantage of the Voluum signal chain is that level control for every effect is done by a single analogue circuit (the about signal quality when you switch in multiple effects.
The effects in the signal chain are described in more detail in the following sections.
VCA
). This minimises noise and signal distortion, so you don’t have to worry
LFO
IN
), the order of the effects in the signal
.
LFO
OUTIN
without the

Effect control methods

On the Vo l u um effects, some parameters can be controlled (modulated) in real time where the parameter can smoothly go between a hi and lo value that you choose. This modulation can be controlled using the foot pedal,
Using the dB parameter of the volume effect as an example, when the control is set to none (no control method is selected), the dB parameter simply sets the output level of the volume effect. When the control is set to pedal, then the hi and lo values of the dB parameter are the maximum and minimum output levels achieved as the footpedal is rocked from one extreme to the other, and
MIDI
controllers or the signal envelope.
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the Voluum acts as a traditional volume effects pedal. However, unique to the Voluum, you can also
MIDI
choose to control dB using a
controller to remotely-control or automate volume changes.
Not all control methods are available for all effects, for example, the gate and compressor are inherently envelope-controlled effects, so there is no additional envelope control method for these effects. The control methods available for each effect are shown below.
Control Methods
Effect none pedal envelope
gate
compressor
LFO
volume
limiter
MIDI
When a control method is selected for an effect, this applies to all controllable parameters within that effect. Not all parameters are controllable (it simply doesn’t make sense for some parameters to be controllable), but for those that are, the same control method is used for each. Note that the Voluum allows you to use different control methods for different effects.
When you have enabled a control method for an effect, controllable parameters are easily identified
LED
because the hi or lo
will light to show you which value (hi or lo) of the parameter is currently
selected. For example, if you are editing the dB parameter of the volume effect and have selected
LED
pedal control, then when the hi the foot pedal is in toe-down position, and when the lo
is illuminated you are setting the output level (in dB) for when
LED
is illuminated, you are setting the output level for when the foot pedal is in heel-down position. You toggle between editing the hi and lo parameter values by pressing the hi/lo button.
Top Tip: To change the hi and lo values together so that both th e hi and lo of the
Control via
parameter are set to the same value, hold the hi/lo button down while you turn the knob to set the parameter value. Note that the hi and lo when you do this to show that both values are being updated.
MIDI
can be used to replicate pedal control remotely and to automate the effect. The
LED
s will both light
controller’s minimum value corresponds to the pedal in the heel-down position, and the controller’s maximum position corresponds to the pedal in the toe-down position. You can choose a different
MIDI
controller for each effect using the CtL parameter.
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Top Tip: If CtL is set to one of the coarse (
the Voluum can be controlled using the full 14-bits of the controller to ensure the smoothest response. (Of course, you need to ensure the fine ( the
MIDI
controller (controller # 32–63) is also being sent to the Voluum for this
to work.)
MSB
) 14-bit
MIDI
controllers (controller # 0–31),
LSB
) part of
envelope control similarly varies the controllable parameters between their hi and lo values in response to changes of the input signal level. You can adjust how sensitive this response is by using the SEn (sensitivity) parameter.
Top Tip: If you often switch between instruments with different output levels, rather than
change the SEn effect parameter (which is stored presets), use the custom SEn parameter to adjust the global sensitivity of your Voluum (see page 33).

Metering

The real-time meters on the V oluum are clear and simple. You will find the meters invaluable when setting up the gate and compressor effects, as well as letting you see what’s going on when the effects are active.
When using the Voluum as a volume pedal effect, the volume meter can be used as a visual indication of the position of the pedal (i.e., the current volume) before enabling the effect.
volume — shows the real-time effect volume scaled to the curren tly set hi and lo values. This monitors both the volume effect and the
LFO
effect (when these effects are active).
24dB
12dB
6dB
noise gate — lights to show when the gate is closing. The brighter the the more the gate has closed.
LED
compressor — shows the amount of gain reduction being
,
applied (see scale in dB above). You can thin k of this as the amount of signal c ompression: the
LED
s lit, the higher the compression.
more
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Adjusting the gate

The gate effect on the Voluum is a noise gate/expander. A noise gate is used to suppress unwanted noise when the signal falls to a low level. It works by allowing signals that are above the gate threshold to pass through unchanged, but reduces signals that are below the gate threshold. The Voluum gate effect allows you to configure the threshold (thr), and the amount of reduction (rEd): the greater the reduction, the more noticeable the effect and the more of the low-level signal (and hence noise) you lose. The Voluum implements a smooth transition around the threshold so that no artificial artifacts are introduced into your sound. When the signal is below the threshold, we say that the gate is closing, and the “closed-ness” of the gate is indicated by the intensity of the gate When the signal is above the threshold and the gate is open, the gate
The graph below shows the difference between high and low reduction. The expander knee is the smooth transition between the signal above and below the threshold. In the Voluum, the knee is harder for high reduction and softer for low reduction values.
LED
is not lit.
LED
.
The gate is also controlled by the attack (Att) and release (rEL) parameters. The attack is the amount of time for the gate to fully open when the signal exceeds the threshold, and the release is the amount of time for the gate to fully close when the signal falls below the threshold.
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The gate parameters are shown in the table below.
Parameter Controllable Range Description
Signal level reduction.
rEd no 0–100
thr no 90– 20 Threshold in dB.
Att no 0·00– 6·00 Attack time in seconds for th e gate to open.
rEL no 0·10 –6·00 Release time in seconds for the gate to close.
The gate effect can be configured to be very subtle by setting a low reduction and low threshold, or to add a distinct character to your sound with a higher threshold and higher reduction. Similarly, a slow rEL time, will allow the gate to close subtly, whereas a fast rEL time can be sudden and more obvious. Typically, the Att time is set fast to ensure transients aren’t lost when the gate opens.
0 is subtle and transparent (soft-knee, low ratio), 100 is more aggressive (hard-knee, high ratio).

Adjusting the compressor

The compression effect is used to even out the level of your playing. For example, the sound level from the lower strings of your guitar is different from the higher strings—this is particularly pronounced for bass guitar. The compressor is used to smooth out this difference. It can also be used to add clean sustain or to boost the overall loudness of your sound (quieter notes will sound as loud as the loudest notes) or to enhance the transients of notes.
A compressor works by apply a gain reduction to the signal when the signal level is above a threshold. On its own this would compress the signal, but also cause a general drop in signal level. To compensate for this, a make-up gain is applied to bring the average signal level back to where it was before. The Voluum’s compressor features an intelligent make-up gain, so you don’t need to worry about setting this.
The graph below shows the effect on the output signal of applying high compression and low compression. Below the threshold, the signal passes through the compressor unchanged. The transition around the threshold, the signal knee, is smooth. Above the knee, a constant gain­reduction (ratio) is applied to the signal level. Note that the shape (sharpness) of the Voluum compressor’s knee varies as the amount of compression is changed.
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The parameters are shown in the table below:
Parameter Controllable Range Description
CPr yes 0–100
thr yes 60 –20 Threshold in dB.
Att yes 0–100 Attack time in milliseconds.
rEL yes 0·10–6·00 Release time in seconds.
Lv L no 24 –24
CtL no 0–127
Compression amount. 0 is subtle (soft-knee, low ratio), 100 is maximum compression (hard-knee, high ratio).
Level trim in dB. Use this to keep the signal level the same regardless of the amount of compression being applied.
MIDI
controller for compress. Only available if
is selected for the compressor effect.
MIDI
control
The compressor effect can be a subtle smoothing-out of your sound (CPr set to a low value, and thr set to a high value), or can be used to add a distinct “compressed sound” to your playing (set CPr to a high value and thr to a low value).
The attack parameter (Att) is the time in milliseconds that it takes the compressor to respond to a signal that exceeds the threshold. A fast attack (Att time is small) can compress short transients,
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whereas a slow attack (Att time is large) often sounds more natural and can preserve the “pop” and “slap” of bass guitar playing.
Top Tip: The compressor, even at fastest attack (Att = 0) may not react quickly enough
to block all transients. However, you can still do this by using the limiter in combination with the compressor to tame the fastest, largest, transients.
The compressor release (rEL) is the time in seconds that it takes for the compressor gain reduction to recover when the signal falls below the threshold. Slower release times tend to smooth out the signal. However, if the release is set too long, the gain will remain turned down for a while after the loud sound has ended. This may cause any quiet sounds that occur between loud sounds to be turned down as well. Conversely, too-fast release times will make the compression effect too obvious to the point where you can hear a very unnatural “pumping” or “breathing” sound as the signal level goes up and down. In general, the release should be set fast enough to recover in time to process the next transient.
The Voluum has an intelligent automatic make-up gain which maintains the subjective loudness of the signal. The aim of the make-up gain is to ensure that the signal loudness is the same with and without compression. However, if you have a particularly high output or low output instrument, you may find that the automatic gain make-up cannot do sufficient compensation for your instrument. If this is the case, you can adjust the value of the level trim parameter (Lv L) until you balance the output with and without the compressor.
Top Tip: If you often switch between instruments with different output levels, rather than
change the Lv L parameter (which is saved in presets), use the custom SEn parameter to adjust the global sensitivity of your Voluum (see page 33).
The amount of compression being applied to your signal is displayed on the compressor metering
LED
s on the control panel of the Voluum. The more
LED
s that are lit, and the brighter they are, the more compression (gain reduction) is being applied. It is very useful to watch this meter when setting up the compressor parameters.
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Adjusting the
The
LFO
in the Voluum is used to create a tremolo effect. It is highly configurable using the parameters in the table below. The speed of the synchronised to a sequencer using
MIDI
(
MIDI
LFO
operation” on page 31
LFO
can be controlled precisely and can even be
).
Parameter Controllable Range Description
Type of
LFO
tyP no
tPo tAP Syn
tempo in bpm pedal is used to tap a tempo sync’d to
bPM yes 10·0– 999 Sets
duo no oFF, on Enables duo mode: two
LFo no 1, 2 Selects the
rtG no oFF, on Retrigger the
dLy no
oFF, 0·1–
25·0
r.P h no 0–63
PhA no 0–63
16, 8, 6, 4, 3,
div yes
2, 1,
1
/2, 1/4, 1/8,
1
/
16
Delay in seconds over which the is retrigged. Only available if rtG is on.
Phase after retriggering. Only available if rtG is on and for
Phase of mode is enabled and when
Clock multiplier. For example, if the clock is 120bpm and div is set to
Shape of
Sin tri
ShP no
Sqr S.uP S.dn trP rnd
r.u P no 0–100
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.
r.d n no 0–100 Ramp down: only available for trapezoid.
dty yes 0–100 Square wave duty cycle.
StE yes oFF, 1–64 Step: quantizes the
dB yes 99 –40
LFO
The
clock:
MIDI
clock
LFO
tempo in bpm. Only available if tyP is set to tPo.
LFO
s rather than a single
LFO
to be edited wh en duo mode is enabled.
LFO
each time a new note is detected .
LFO
“grows” a fter the
LFO
1 only.
LFO
2 relative to
1
/2, the
LFO
waveform:
depth in dB.
LFO
oscillates between 0dB and this level.
LFO
1. Only available when duo
LFO
2 is selected for editing.
LFO
clock will run at 60bpm.
LFO
output to this number of steps.
LFO
.
LFO
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Parameter Controllable Range Description
SEn no 30–30·0
CtL no 0–127
The diagram below shows examples of the different shapes of waveforms, selected using the ShP parameter. The random waveform takes a different random value every cycle (the cycle is defined by the bPM and div parameters).
Envelope sensitivity in dB. Only available with envelope control.
MIDI
controller for
LFO
. Only available with
MIDI
control.
sinusoid
square saw up
saw down trapezoid
example of random
triangular
Sinusoid (sine) waveforms are well-suited to tremolo effects, and often result in the most natural sound, and is usually the best starting point for exploring the
LFO
effect.
The square waveform has a variable duty cycle (dty), or pulse-width, which sets how long the waveform remains at its maximum value compared to its minimum value. When dty is 50, the waveform is symmetrical (square), whereas at its limits the waveform is always at its minimum (dty = 0) or maximum (dty = 100) value. This can be used to emulate the sound of a kill-switch, particularly when you control dty using the pedal.
The trapezoidal waveform is highly configurable: examples of trapezoidal waveforms are shown below. In the Voluum, the shape of the trapezoid is controlled by the parameters ramp up (r.u P) and ramp down (r. dn), referring to the left and right sides of the waveforms shown. One cycle of the
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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 has no ramp, shown as t
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.
below.
a
r.u p r.d n
t
a
t
a
+ r.dn = 100
r.up + 2t
100
a
triangular wave
= 0, r.up = r.dn = 50
t
a
r.up + r.dn = 100
saw-up wave t
= 0, r.up = 100, r.dn = 0
a
r.up + r.dn = 100
Voluum
r.u p r.d n
100
r.u p
100
© Copyright 2014 Sonuus Limited 25
t
a
square wave r.u p = r.d n = 0, ta= 50
2 t
= 100
a
t
a
100
saw-down wave t
= 0, r.up = 0, r.dn = 100
a
r.up + r.dn = 100
r.d n
100
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The parameter tyP, lets you select the
LFO
clock type. The options for the clock are: it can be set as
a tempo (tPo) using the bPM parameter; tempo can be tapped using the footpedal (tAP); or the
MIDI
clock can be sycn’d (Syn) to external
clock.
The tempo is in beats per minute, bpm. The bPM parameter has a range of 10 to 999. To achieve slower and faster tempos, the div parameter multiplies the value of the tempo set by the tyP clock source. As an example, if tyP is tPo, bPM is 120bpm and div is 2, then tempo has a value of 240 bpm.
LFO
The effect on volume of the
LFO
increases (boosts) the signal level from 0dB (no change) to the dB value. When this is negative,
LFO
decreases (cuts) the signal level from 0dB (no change) to the dB value. Tremolo effects
the
is controlled by the depth (dB) parameter. When this is positive, the
traditionally cut the signal level, so a negative dB would be chosen to emulate this.
Top Tip: If you want the
18 and enable the volume effect and set a constant dB of +6.
To create more elaborate
LFO
s are driven from the same clock (so are controlled by the same bPM) but each can have a
different waveform, depth and division, and a phase offset can be applied to
LFOS
By modulating the
’ parameters you can easily create complex, smoothly evolving textures.
LFO
LFO
effects, two
to oscillate between, say, +6dB and 12 dB, set the
LFO
s can be combined when duo mode is enabled. Both
LFO
LFO
dB to
2 (relative to
LFO
1).

Adjusting the volume

The Voluum lets you configure how your volume effect sounds and how it feels to play. The parameters to set it up are in the table below.
Parameter Controllable Range Description
dB yes 99 –40
Lo9–Lo1, Lin,
Cur no
FAd no oFF, on
tiM no 0·1 –99·9 Fade time in seconds, for fade mode.
Att no 0·00 –9·99
dEC no 0·00–9·99
hi1–hi9, Lh1–Lh9, hL1–hL9
Volume level in dB. 0dB means there is no change in signal level.
Curve: sets how the volume control (pedal or mapped onto the volume effect output. This also affects the shape of the volume change in FA d and envelope
ADSR
) modes.
(
Fade mode on or off. Only available with pedal and
Attack time in seconds ( Only available with envelope control.
Decay time in seconds ( Only available with envelope control.
ADSR
ADSR
).
).
MIDI
control.
MIDI
) is
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Parameter Controllable Range Description
SuS no 99– 40
rEL no 0·00 –9·99
thr no 80 –0
CtL no 0–127
Sustain in dB, relative to hi value of dB ( Only available with envelope control.
Release in seconds ( Only available with envelope control.
The signal level drop (threshold) in dB required to trigger
ADSR
release. Only available with envelope control.
the
MIDI
controller for volume.
Only available with
ADSR
MIDI
).
control.
The volume level can be set to a single value using the dB parameter. However, to set-up a traditional volume pedal effect, select pedal control for the volume effect and then set a low value for the lo dB parameter and a high one for the hi dB parameter. Now when you rock the footpedal from heel- down to toe-down, the volume increases.
Changing the curve (Cur parameter) lets you adjust the “feel” of the footpedal, from the default linear (lin) setting through to extreme settings where most movement happens at the heel-down (hi9) or toe-down position (lo9).
ADSR
).
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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 the lo value of volume, while a hi curve spends more time near the hi value. The higher the number i.e., Lo9 rather than Lo1, the more pronounced the effect.
To get even more control, these curves can be combined so that the curve starts as a “lo” curve, but ends as a “hi” curve (Lh-), and vice-versa (hL-). The Lh- curves are particularly useful for volume fades: note how the change starts and ends smoothly at both ends. These curves, also known as sigmoid curves, allow the most natural-sounding fades to be achieved.
The Voluum lets you do super-smooth volume fades that would be impossible to achieve using a simple volume pedal: enable FAd (set to on) and set a fade time using the tiM parameter. When the footpedal is moved to the toe-down position, the volume will fade from lo to hi. Conversely, when the footpedal is moved to the heel-down position, the volume will fade from hi to lo. You can use this to make a signal fade quickly or very slowly to get the effect that you like.
ADSR
When you select envelope control for the volume effect, a level-triggered sustain-release) volume envelope is applied to the signal which gives you automatic volume swells and lets you create synth-like sounds. The sustain (SuS), release (rEL) and threshold (thr) control the in the figure below.
28 © Copyright 2014 Sonuus Limited
ADSR
envelope parameters attack (Att), decay (dEC),
ADSR
volume envelope. They are shown
(attack-decay-
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dB hi
Sustain (dB relative to dB hi)
dB lo
Attack (time)
Decay (time)
When triggered by a new note or chord, the volume increases from lo to hi (attack). Once complete, the volume then decreases (decay) to the sustain level (sustain). Once the input signal falls below the threshold (it drops in level by thr dB compared to the signal level at the start of the attack) the release phase is entered and the volume falls back to its lo value.
ADSR
Using this
shaping, you can achieve sounds reminiscent of other instruments by emulating the characteristic shape of their envelopes. For example, a slow attack can be used to emulate bowed stringed instruments.
Release
(time)
Top Tip: For simplicity, we described how curves affect the footpedal, but they also affect
how the volume changes in fade mode, under mode. Don’t worry too much about this — simply adjust Cur to get th e sound you want!
MIDI
control and in envelope

Adjusting the limiter

The limiter is used to limit the range of the output signal in order to prevent the potential overload of any downstream equipment with limited headroom, such as a digital processor. Unlike the compressor, the limiter always reacts instantly and so can prevent overload caused by very fast transients that the compressor could miss.
Parameter Controllable Range Description
dBu yes 5·2– 20·0 The nominal level at which the limiter clips, in dBu.
The limiter symmetry in percent — 0 is symmetric.
SyM yes 99–99
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© Copyright 2014 Sonuus Limited 29
Positive values allow the positive part of the signal to be larger than the negative part.
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Parameter Controllable Range Description
SEn no 30·0–30·0
CtL no 0–127
A large signal entering an effect with limited headroom will often cause hard-clipping where the tops of the signal are simply chopped off. Generally, this doesn’t sound good. To prevent this, the limiter soft-clips the signal to reduce the audible artifacts caused by clipping, and for small overloads the effect can be inaudible.
The nominal signal level at which the limiter clips is set using the dBu parameter. The symmetry of clipping can be adjusted using the SyM parameter.
The difference between hard clipping and soft limiting is shown below, along with the effect of changing the symmetry of the limiting.
Envelope sensitivity in dB. Only available if envelope control is enabled.
MIDI
controller for the limiter. Only available if
is enabled.
MIDI
control
hard clipping
soft clipping
asymmetric soft clipping
The harmonic distortion (overdrive) achieved with symmetric limiting introduces odd harmonics into the output signal. However, by using the SyM parameter to set-up asymmetric limiting, the output sound can be changed because this introduces even harmonics into the output signal. This effect can be subtle, but we know that it matters to some of you and the SyM parameter gives you the flexibility to achieve it. Don’t worry too much about the details of the harmonics—just set-up the
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symmetry so that you like the sound. Note, however, that the symmetry control will have less effect the closer dBu is set to its minimum value: at maximum limiting only symmetric limiting is possible.
The limiter level and symmetry is controllable using the hi and lo values of the dBu and SyM parameters when a control method is selected.
MIDI
operation
It is possible to control the Voluum with example, by default the footpedal sends 14-bit volume controller messages on can use the Voluum to control synthesizers.
MIDI
input and to use the Voluum as a
MIDI
can also be used to synchronise the
MIDI
controller. For
MIDI
channel 1 so you
LFO
sequencer to ensure its tempo matches that of your song, or to automate preset selection.
MIDI
The Voluum can send and receive
To u s e
USB-MIDI
Linux) via a
, connect the
USB
cable. The necessary drivers are part of the operating system so your computer will
USB
messages using dedicated
port of the Voluum to a
automatically configure itself to work with the Voluum. Once this is done, new ports will appear, named “Voluum”. To send
MIDI
the “Voluum” Voluum
To use dedicated
-out port. To receive
MIDI
-in port.
MIDI
, connect your
MIDI
MIDI
MIDI
messages to the Voluum, connect your software to
messages from the Voluum, connect your software to the
-enabled device to the
MIDI
connections or using
USB
port of your computer (
MIDI
-in and
MIDI
OSX
, Windows,
MIDI
-in and
-out connectors on the
Voluum.
MIDI
The following standard
output (from Voluum to computer or
MIDI
MIDI
message Chan Description
messages are supported.
MIDI
device)
Program Change
Sent when a new preset is selected on the Voluum.
Program Change
Controllers
Bank Select #0 #32 Ch. o
Vol um e #7 #39 Ch. o Always sent whenever the footpedal is moved.
a.
MIDI
output channel, Ch.o, selected in custom parameters.
MSB LSB
Ch. o
a
Bank Select messages are sent when the current preset changes between factory and user presets.
Factory (0) or user (1) preset bank. (Factory: #0=0, #32=0. User: #0=0, #32=1.)
to your
USB-MIDI
MIDI
-out
.
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MIDI
input (from computer or
MIDI
message Chan Description
MIDI
sync
MIDI
clock
Song position
Program Change
Program Change
Controllers
Bank Select #0 #32 Ch. i
compressor #11 #43 Ch. i
LFO
volume #7 #39 Ch. i
limiter #12 #44 Ch. i
a.
MIDI
input channel, Ch.i, selected in custom parameters.
MSB LSB
#1 #33 Ch. i
MIDI
device to Voluum)
N/A Used when
Selects the preset to be used. Operates on the currently selected bank (factory or user). Use Bank Select
a
Ch. i
controller message to switch between factory and user banks.
Selects factory (0) or user (1) preset bank. (Factory: #0=0, #32=0. User: #0=0, #32=1.)
This is the default (expression). It can be changed in the compress parameters.
This is the default (modwheel). It can be changed in the
LFO
parameters.
This is the default (volume). It can be changed in the volume parameters.
This is the default (effect control 1). It can be changed in the limiter parameters.
LFO
is in
MIDI
sync (Syn) mode.
The Voluum can also be used as a
MIDI
computer and other
gear. When the Voluum is connected to your computer via messages sent to the Voluum over received on the 5-pin
MIDI
input will be sent over
USB-MIDI
interface, allowing you to send
USB
will also be sent out the 5-pin
USB
to your computer.
32 © Copyright 2014 Sonuus Limited
MIDI
between your
MIDI
output. Similarly,
USB
, any
MIDI
MIDI
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Custom settings

Further configurability of the Voluum is possible through custom. This lets you change the setup of the Voluum 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 Voluum’s set-up, not the set-up of the current preset i.e., they are global settings. The custom settings are not stored in a preset, they are stored in the V oluum 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 parameters, enter custom mode by pressing and holding the
EFFECT
Parameter Default Range Description
LEd 40 1–100
int Gtr
SEn 0 36–36
byP tru tru, buF Allows you to select true-bypass (tru) or buffered-bypass (buF)
brightness to a very low level to prolong battery life or to suit working in a darkened
knob for 2s.
LED
brightness: 1 is minimum, 100 maximum. Reducing the
brightness is useful for dark environments and for battery saving.
Gtr
bA4
bA5
Instrument (optimises note-retriggering for optimises envelope tracking)
guitar (perfect for guitar, but also good for 4-string bass. Use this unless you experience problems with 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 ±36dB.
LFO
and
ADSR
and
LED
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Parameter Default Range Description
oFF
on
o.Lo
P. En on
o.hi
P. ti 0·1 0·1–20·0
FS.t 4 (2s) oFF, 1– 8
Po.t oFF
PoS oFF oFF, on
Ch.i 1
Ch.o 1
oFF,
1–240
Any, 1–16
oFF, 1–16
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 p age 13.
Pedal effect time off. Only available if P. E n 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 500 ms 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 enabled.
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.
Sets the
MIDI
input channel used to receive
MIDI
messages on any channel will be accepted (omni mode).
Any,
Sets the
MIDI
oFF, no
output channel used to send
MIDI
messages will be sent.
MIDI
messages. If set to
MIDI
messages. If set to
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External footswitch connection

Although it is easy to select presets using your foot with the Voluum’s footswitch and footpedal (see “Foot-operated preset selection” on page 13), it can sometimes be more convenient to have dedicated footswitches for this, freeing up the Voluum’s foot controls to be used exclusively for enabling/bypassing the effect and for pedal-control.
The V oluum allows two external footswitches to be connected: one acting as up (increment preset),
MIDI
and one acting as down (decrement preset). This is done by using spare pins on the connector, as shown in the diagram below. With basic soldering skills, it is possible to make a simple adapter which allows two footswitches to be connected, and allows the unaffected so it can still be used.
MIDI
out to pass through
out
Voluum
Up footswitchDown footswitch
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User modifications of the Voluum

For the avoidance of doubt, opening any part of the Voluum other than the battery compartment will always cause your warranty to be invalid, unless you obtain prior authorisation from sonuus.
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. Any damage caused to the Voluum 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.

Pedal calibration

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 Voluum 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 button 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.
CONTROL
button and the active button.
CONTROL
button and the active

Warranty

The Voluum 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.
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Firmware updating

To support new features and to make it future-proof, firmware (internal software) of the Voluum can be upgraded.
To u p da t e t h e Voluum 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:
Note: if the Voluum detects that your firmware is corrupt, it will boot straight into update mode to let you update the firmware.
OSX
and Windows. To access these files, you need to register and create a user
register.sonuus.com
To update firmware on the Voluum
While powering-on the Voluum, press and hold: active + .
The numeric display now shows UPd to indicate firmware update mode is active.
Connect the Voluum to your computer via
Follow the steps in the Firmware Updater manual you have downloaded.
USB
(if not already done during power-on).

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 active 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.
DC
or
USB
Note that when 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.
Voluum
power are available, the displayed battery level will not show the correct
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Special key presses

Mode Key Presses
Pedal calibration: enter
save and exit cancel and exit
Battery monitoring Simultaneously press and hold active + to display % battery ch arge.
Firmware update mode: enter
exit
Cancel edit (enter Preset Select mode)
Foot-operated preset mode enter/exit
Display firmware version
Simultaneously press and hold active button + CAL is displayed.
Press save. Press and hold save to can cel.
Simultaneously press and hold active + when powering-on the Voluum.
Restart the Voluum.
Press and hold save for 2s.
Press and hold footswitch until footswitch
Press and hold save on power-on (version number is shown until you release the save button).
CONTROL
button for 4 s until
LED
starts/stops flashing.

Adjusting pedal tension

The tension (stiffness) of the foot pedal can be adjusted using the 5 mm Allen key supplied. Insert the Allen key into the bolt on the side of the pedal and adjust the tension to get the feel you want. Turn clockwise to increase the pedal resistance, turn anti-clockwise to reduce the pedal resistance, ensuring that you don’t loosen the bolt too much. Only small adjustments are required to make changes to the pedal tension.
tighten
loosen
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Factory presets

The Voluum is able to store up to 100 factory presets, but not all of these slots are utilised in the current firmware version. Additional factory presets will be included in future firmware updates.
Use this space to note your favourite factory, or user, presets.
Preset Notes
Voluum
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Specification

Physical & Electrical
Size 171mm × 192mm × 76mm
Power 9V DC (any polarity), 4 × AA batteries, USB (500mA max)
Audio Input
Audio Output
Audio Bandwidth (−3dB)
MIDI
Input Standard 5-pin
MIDI
Output Standard 5-pin
External Footswitches Two footswitches c an be connected to
Computer Standard Type B USB socket
Signal switching Transparent-True-Bypass | Buffered Bypass (selectable)
Presets 30 Factory | 100 user
LFO
types Sine, square, triangle, saw-up, saw-down, trapezoid, random
Control methods Pedal, envelope,
Drivers Class-compliant HID/USB Audio (built into operating system)
Computer (Editor)
Computer (MIDI)
6·35mm (¼") mono jack | 2MΩ impedance +18dBu nominal maximum input level
6·35mm (¼") mono jack | 1k impedance +21dBu nominal maximum output level
17Hz – 121kHz (0dB gain) 17Hz – 22kHz (40dB gain) 17Hz – 35kHz (40dB attenuation)
MIDI DIN
MIDI DIN
| Pin 1 and pin 3 allow external footswitch connection
MIDI
Effect
MIDI
, none
Computer
Windows XP, Vista, 7 and above Apple OSX 10·5 and above (Intel Mac only)
Windows XP, Vista, 7 and above Apple OSX 10·3·9 and above
out, used as up and down buttons
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