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Voltage Processor is a flexible and intuitive utility module designed to give you precise command over the signals in your modular system. It combines three independently attenuable inputs, one bipolar and two unipolar, into a single clean mixable output. All inputs are DC-coupled, which makes the module suitable for both audio signals and control voltages.
A dedicated ±5V offset control lets you lift, lower, or reposition any signal for accurate shaping, scaling, inversion, or correction. Whether you are building complex modulation chains, conditioning pitch CV, or sculpting audio creatively, Voltage Processor provides the precision and immediacy needed to keep your signals under control.
Compact, reliable, and useful in every patching workflow, this module works equally well as a first DIY build or as a permanent utility in a seasoned synthesist’s system. It is the kind of tool you will reach for constantly because everything in a modular setup becomes easier when your voltages behave exactly as you intend.
Voltage Processor combines a multi-input attenuverting mixer with a controllable DC offset source that gives you complete analog control over signal scaling and shaping.
The bipolar input includes an attenuator that allows for full-range gain and inversion. The two unipolar inputs each provide independent attenuation, which makes it easy to layer or blend modulation sources. All three input paths are DC-coupled so the module accurately handles low-frequency CV and high-frequency audio signals.
The onboard offset generator provides an adjustable ±5V reference that allows you to shift the combined signal up or down. This is ideal for tasks such as biasing LFOs, recentring bipolar signals, creating windowed modulation, or adapting external voltages to a module’s expected operating range.
A precision op-amp output stage ensures low noise, stable operation, and consistent response across the full voltage range. Voltage Processor is a reliable building block for any patch that requires clean, flexible, and accurate voltage manipulation.
Check out this great build overview by Pugix (Richard Brewster)
LGE011 DIY Documentation:
LGE011 Bill of Materials
LGE011 Schematic
LGE011 Main PCB Layout Top w/ Designators
LGE011 Main PCB V1 Layout Bottom (PCB ERROR CORRECTIONS) (v1.2 PCB has power connector corrected)
Mechanical Parts BOM generally required for building Low-Gain Electronics Modules
** 4U Modular is a term used for the format most commonly known as “Serge Format” or “Loudest Warning Format”. Out of respect for the ever growing format, 4U Modular is the easiest way to refer to it. More Specifically it refers to the panel height and mounting hole style. 4U Modular will patch up just fine with other 4U "Serge" formats such as "Random Source", but it will not mount in RS boats or Buchla Boats (or power off Buchla power for that matter). An info page about this will be added to the website soon to make this a lot more easy to understand.
Details:
PCB Size: 6” x 1”
Current Draw: TBD