User Manual

Inputs & Outputs For Filters A & B 
The following inputs and outputs are identical for both Filter A (left side, shown in red) and Filter B
(right side, shown in blue):
[A] IN - Audio input to the filter.
[B] Q - CV input for controlling the
filter resonance (Q). Use an
external attenuverter (such as
an Intellijel Triatt or Quadratt 1U)
if you wish to invert the
modulation or reduce its effect
on resonance.
[C] OUT - Audio output of the filter.
[D] 1V/OCT - Dedicated 1V/OCT CV
input, which causes the filter
cutoff to track a keyboard or
sequencer’s pitch over several
octaves. If using the filter as an
oscillator (maximum Q), this
input acts as the pitch input for
the oscillator. Filter A’s 1V/OCT
input is normalled to Filter B’s
1V/OCT input — allowing a
single pitch CV to modulate both
filters simultaneously if nothing
is plugged in to Filter B’s
1V/OCT jack.
[E] FM1 - First of two scalable CV
inputs for controlling filter cutoff.
The FM1 attenuator knob
controls how deeply the cutoff frequency is modulated by the signal appearing at FM1.
[F] FM2 - Second of two scalable CV inputs for controlling filter cutoff. Filter A’s FM2 input is
normalled to Filter B’s FM2 input — allowing a single external CV to modulate both filters
simultaneously if nothing is plugged into Filter B’s FM2 jack. Use the FM2 attenuverter knob to
control both how deeply the cutoff frequency is modulated by the signal appearing at FM2 and
the polarity of that modulation.
Morgasmatron Manual 10