Quick Start Guide
MODAMP MODULE 1005
Legendary 2500 Series Ring Modulator
and VCA Module for Eurorack
Controls
(1) AMPLIFIER GAIN – This knob controls the VCA’s gain and
nal output volume at the OUT jack.
(2) UNMOD GAIN – This knob controls the IN A signal gain
when the module is in UNMOD mode (as indicated by the
UNMOD button). UNMOD mode allows the module to be
used as a VCA when modulation is not required.
(3) AMPLIFIER CONTROL MODE (EXP’L/LINEAR) –
This sliding switch determines whether the VCA gain
response is exponential (EXP’L) or linear (LINEAR).
(4) UNMOD – Press this button to place the module into
UNMOD mode. In UNMOD mode, the IN A signal passes to
the OUT jack without any modulation, and the signal level
is controlled by both the UNMOD GAIN and AMPLIFIER
GAIN knobs. IN B does not function in UNMOD mode.
(5) MOD – Press the button to activate MOD mode. In MOD
mode, the circuit combines the IN A signal and the IN B
signal to produce an output signal that is a modulated
combination of the two input signals.
(6) RATIO – Use this knob in MOD mode to oset the tune
control voltage that is sent out through the CV B jack.
This function only operates when MOD mode is selected.
(7) TUNE – Use this knob in MOD mode to control the output
level of the tune control voltage sent out through both
the CV A and CV B jacks. This function only operates when
MOD mode is selected.
(8) IN A – This knob controls the input level for the signal
coming in through the IN A jack.
(9) IN B – This knob controls the input level for the signal
coming in through the IN B jack.
(10) IN A / IN B – Use these input jacks to route in audio
signals for the internal modulation process via cables with
3.5 mm connectors.
(11) CV A / CV B – Use these jacks to route TUNE (CV A and
CV B) and RATIO (CV B oset) control voltages out to the
two VCOs that typically supply the audio signals to the IN A
and IN B inputs to be modulated.
(12) CV IN – Use this jack to route in control voltage signals for
remote control of the AMPLIFIER GAIN setting.
(13) MOD – Use this jack to route in a trigger signal to remotely
activate MOD mode via a cable with 3.5 mm connectors.
(14) GATE – Use this input jack to route in a gate signal to
turn the modulation circuit on and o via a cable with
3.5 mm connectors.
(15) UNMOD – Use this jack to route in a trigger signal to
remotely switch o MOD mode via a cable with 3.5 mm
connectors .
(16) OUT – This jack sends out the nal VCA signal via cable
with 3.5 mm connectors.
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