POWER
0
DUDE is powered by 4xAA batteries or by external
power supply 9–12VDC - center positive polarity -
2.1mm barrel. Inserting a power jack disconnects the
batteries and powers Dude from the external supply.
1
Press the JUICE switch button to turn DUDE ON
or OFF. To check whether the device is powered press
some of the MUTE button switches to check if their light
comes ON. If not check the polarity of the batteries /
power supply.
MIXING
2
There are 5 mono input channels on DUDE. Each
channel has an input jack atthe front. Mono or stereo
signal/cables can be inserted, but DUDE will only listen
to the left channel.
3
The signal of each channel goes thru the MUTE
switch button. When light atthe channel is ON it
means the signal is passing and the channel is active.
note
The MUTE switch buttons are purely
mechanical which means that switching signals with
low harmonic content (sinewaves) might produce
audible clicks.
4
The gain knob for each channel sets amount of
amplification (center and CW) or attenuation (center
and CCW). Maximum gain per channel is +20dB / 10x
gain.
5
The signal from all channels is fed to the active
summing stage and mono to stereo splitter with
separate output buffers for Left and Right channels.
This allows the output jack to be used with headphones
and mono or stereo cables without any problem.
Both inputs and outputs are AC coupled.
FEATURES
©
5 channel monophonic mixer
©
up to +20dB (10x) gain knob on each channel
©
dedicated mute button switch per channel
(not click less)
©
dual mono output for driving headphones
©
powered by 4x AA battery or external adaptor
9–12VDC
D
DUDE
54321
+20dB
JUICE
-∞
+20dB-∞+20dB-∞+20dB-∞
+20dB
CH CH CH CH CH
-∞
M U T E
5 CH
BASTL MIX
9–12 V DCMIX OUT
1 IN 2 IN 3 IN 4 IN 5 IN
IN
2
3
4
5
1
DUDE DUDE DUDE DUDE DUDE DUDE
DUDE DUDE DUDE DUDE DUDE DUDE
Dude is a portable battery operated 5 channel
audio mixer with mini jack inputs and output. Each
channel has a dedicated mute button and up to
+20dB gain to boost weak signals and saturate line
level signals. Dude is a monophonic mixer but can
drive your headphones and therefore is perfect for
small, portable rigs or submixes on stage. It runs on
four AA batteries or external power supply and is
almost as small as the battery pack itself. Because
each channel has gain (and the mix output is noninverting) Dude can be used as a feedback processor
and tone generator by feeding the output back to an
input thru a passive eq and other simple circuits.
ABOUT
DUDE
DUDE AS A TONE
GENERATOR
DUDE is a non-inverting mixer which means it doesn‘t
invert the phase of the signal. Therefore the output
can be fed back into any of the inputs to create
oscillating tones. By running the signal thru a simple
EQ the pitch and character of the tone can also be
modified. When more sophisticated effects are used
in the feedback loop (such as chorus or phaser)
the whole sound generation process gets much
more interesting. Using passive signal splitters at
the input/output jacks is very much recommended
since applying the same signal to several inputs
with different gain creates a playable (and tunable)
instrument when interacting with the MUTE button
switches.
NOTE ABOUT BATTERIES
AND HEADROOM
Both rechargeable and non-rechargeable (alkaline)
batteries can be used with DUDE. Please note that
the rechargeable batteries give less headroom (4x
1.5V alkaline give 6 V which gives +/-3V power ~ +/-
2.7V headroom vs. 4x 1.2V rechargeables give 4.8V
which gives +/- 2.4V power ~ +/- 2.1V headroom).
When used with an external power adaptor the
power is regulated down to 6V which gives the same
headroom as alkaline batteries. The headroom is
a threshold for the signal before it starts clipping which might or might not be desirable. When used
with line level signals +/- 1V the provided headroom
is sufficient even for +10dB boost or more. Batteries
getting discharged might lower the headroom, but
also produce more unique kinds of saturation.
When used with a modular synths +/- 5V signal levels,
the headroom is way too low. Therefore for dedicated
operation with modular synth levels the overall gain
can be decreased by adding one more resistors to
the circuit board.
See
bastl-instruments.com
for more information.
APLICATIONS
DUDE AS A MIXER OR
AS A SOUND PROCESSOR
When the gain knobs for each channel are in the
safe zone of not amplifying too much, DUDE is a very
clean sounding mixer. As the signals get boosted
more they begin to saturate and start fighting for
dominance of the overall mix. This can result in a
saturated mass of sound where the different input
signals push and pull on each other in interesting
ways. Also clean waveforms can be waveshaped by
adding gain, which will add odd harmonics to the
signal.
DUDE AS A MODULAR
MIXER
When DUDE or several DUDEs are used in
combination with passive signal splitters they can
be configured into many different mixing scenarios.
An effect send chain can be realized with two
DUDEs. Mixing groups can be achieved in any free
combination. See the website for more information.
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