ADDAC System ADDAC107 Eurorack Module User Guide
- June 11, 2024
- ADDAC System
Table of Contents
ADDAC System ADDAC107 Eurorack Module
DESCRIPTION
We started this module with the idea of developing a complex drum source
however, somewhere along the process, we noticed how much better it performed
as a synth voice and simply embraced this lucky accident.
The CV OUTPUT is also normalled to the Frequency and Cutoff inputs.
This module will also be available as a full DIY kit.
Tech Specs: 9HP 4 cm deep 80mA +12V 80mA -12V
INPUT GAIN
The [INPUT GAIN] knob,
Usually Attack/Decay envelopes have a maximum voltage of +5v, no matter if the
input gate is +5v or above the AD will clip at +5v. In this case we did not
use this clipping method and instead allow the incoming voltage to determine
the maximum AD voltage, meaning that if a +5v gate is present then the AD
maximum voltage will be +5v but if a gate of +10v is sent then the AD maximum
voltage will be +10v. This also means that with higher input voltages the
decay, although falling at the same speed, will be longer than with lower
voltages as it has a longer range to go back to 0v.
As we mentioned before the [INPUT GAIN] knob can amplify the incoming input by
a factor of 2, allowing to use a standard +5v gate or envelope and being able
to make the resultant AD go up to +10v.
The AD signal is responsible for opening the VCA. Up to +5v the VCA will open to unity gain above this value the VCA will start to amplify and eventually saturate and distort.
This saturation will add harmonics to the signal which will change it’s gentle timbrical nature to a more unique and peculiar timbre that will make the module shine in Acid contexts.
Adding high levels of Resonance or even filter self oscillation in combination with high VCA saturation will create even more harmonics that we highly encourage the user to explore.
SIGNAL FLOW DIAGRAM
CONTROLS DESCRIPTION
For feedback, comments or problems please contact us at: addac@addacsystem.com
ADDAC107 USER’S GUIDE
Revision.01 April.2023
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ADDAC System ADDAC107 Eurorack
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[pdf] User Guide
ADDAC107 Eurorack Module, ADDAC107, Eurorack Module, Module
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