Instruo aradh User manual

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Transistor Ladder Filter

Pre/Post Switch
The Pre/Post Switch configures the internal routing of the
VCA in relation to the low pass filter.
In its upward position, the VCA is routed after the low
pass filter, similar to a traditional east coast synth voice.
In its downward position, the VCA is routed before the
low pass filter.

f
Q
VCA
c
CV
FM
POST
OUT
BIAS
1V/OCT
+–
Strike Envelope
Rising edge signals present at the Strike Input will trigger
the decay/impulse envelope which modulates both the
cutoff frequency of the low-pass filter and the amplitude
of the VCA.
This can create a low-pass gate style effect with the
transistor ladder filter.
The Decay Knob controls the decay time of the envelope.

Primary CV Assignment
CV can be assigned to multiple parameters simultaneously.
Press the CV Assign Button to set primary user-defined
parameters.
(Primary user-defined parameters can work simultaneously
with the secondary user-defined parameters.)
No Parameter
Unilluminated
VCA Cutoff
Frequency
VCA + Cutoff
Frequency
White Amber White/Amber
PRE
IN FOLLOW
GATE

Secondary CV Assignment
To set secondary user-defined parameters, press and
hold the CV Assign Button (1) and tap the Strike Button
(2) 4 times. With the CV Assign Button still held down
subsequent Strike Button taps will cycle through the four
secondary parameters.
No Routing
Unilluminated
Resonance
Blinking White
Impulse Envelope
Decay
Blinking Amber
Resonance + Envelope
Decay
Blinking White
/Amber
1
2