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N. Controls how the outputs X
1
, X
2
and X
3
react to the settings dialed on the knobs [K] , [L] and [M] –
allowing you to obtain different flavors of random voltages from the 3 outputs. Diversity is fun!
All channels follow the settings on the control panel.
X
2
follows the control panel, while X
1
and X
3
take opposite values. For example, if STEPS is turned fully
CW, X
1
and X
3
will be smooth while X
2
is quantized to the root note and its octaves.
X
3
follows the control panel, X
1
reacts in the opposite direction, and X
2
always stays in the middle (steppy,
unbiased, bell-curve).
O. External processing mode .
5. STEPS, SPREAD and BIAS CV inputs.
6. External clock input. When patched, all three outputs follow the same external clock, as opposed to
being clocked by the three outputs from the t section.
7. CV outputs.
Press the button [O] to enable the external processing mode. In this mode, the module samples the
voltage present on the SPREAD CV input (5) whenever a random value is needed for one of the X
outputs.
A couple of interesting notes about external CV processing:
BIAS [L] acts as a transposition control, shifting voltages up and down, and SPREAD [K] controls the range
of this transposition.
When no patch cable is inserted in the
X section’s clock input (6) , the three X output will contain the same
melody, but with some notes frozen/sustained on outputs 1 and 3 – because each output is sampled at its
own pace.
When the channel diversity setting
[N] is set to the first (green) position, and the module is externally clocked,
and an external CV is fed to the module, you’d expect all 3 outputs to carry the same voltage, right? That’s
right, but that would be boring… In this particular configuration, the module switches to a shift-register mode
in which
X
2
carries X
1
’s voltage shifted by one clock tick, and X
3
carries X
2
’s voltage shifted by one clock tick.
All outputs follow the value of the STEPS [M] knob. Always. Irrespectively of the channel diversity setting [N] .
Because some sequencers do not exactly change their output CVs at the same time as they send their gate
signals,
Marbles tolerates up to 3ms of difference between the transitions.
The Y generator, by default, is a smooth, full-range (-5V to +5V), random source that is clocked at
1
⁄
16
the rate of X
2
. These settings can be modified by holding the button [N] and adjusting RATE (division
factor relative to X
2
, from
1
⁄
64
to 1 ), SPREAD , BIAS and STEPS while the button is held. The Y output is
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