User Manual

10 © Copyright 2014 Sonuus Limited Vo l u um
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
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 Voluum. WARNING: observe correct polarity!
• plug the output of a 9V
DC power supply into the port labelled DC on the back of the Voluum.
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 V oluum has been designed so that either polarity
(tip-positive or tip-negative) can be used.
•plug a
USB cable connected to your computer or a USB power supply into the port labelled USB
on the back of the V oluum. If a USB hub is used, it may need to be a powered hub to ensure it
can provide enough current to the Voluum. However, sometimes
USB power (typically desktop
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
USB connection, simply connect a 9V DC power supply and
the Voluum will use that instead of
USB power and you won’t get these noise problems.
Note that there is no problem if you connect all three power sources at once. The
DC supply takes
priority, then
USB , then the batteries. This ensures your batteries are not drained when they are not
needed and allows you to connect via
USB without using USB power when a DC supply is present.
The Voluum is switched on when you connect
USB or DC . When running from batteries, the Voluum
is switched on when an instrument cable is connected to
IN . To prolong battery life, disconnect the
cable from
IN when the Voluum is not being used.
LOCK switch
On the back panel of the Voluum there is a slide switch labelled 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.
Top Tip: If you are using the Voluum on stage, use a DC power supply and batteries. That
way, if the
DC power supply is pulled out for any reason, the Voluum will switch
to batteries and you will, in effect, have an un-interruptible power supply.