Quant Gemi - Synthesizer Noise Engineering - Free user manual and instructions

Product Type	Eurorack Synthesizer Module
Brand	Noise Engineering
Model	Quant Gemi
Width (HP)	10 HP
Depth	35 mm (including ribbon cable)
Weight	Approx. 120 g
Power Requirements	+12V: 80 mA, -12V: 20 mA
Power Connector	10-pin ribbon cable (Doepfer standard)
Main Functions	Quantization, chord generation, scale mapping, CV processing
Inputs	3 CV inputs (1V/oct), 1 trigger input
Outputs	3 quantized CV outputs (0-10V), 1 gate output
Controls	3 knobs (scale, root, chord type), 1 button
LED Indicators	Power, CV input activity, gate status
Protection	Reverse power protection
Construction Material	PCB with aluminum front panel
Operating Temperature	10°C to 50°C
Maintenance	Wipe with a dry, lint-free cloth. Do not use solvents.
Safety Precautions	Do not expose to moisture. Disconnect power before handling.
Repairability	User-replaceable fuse; contact Noise Engineering for service.
Compliance	RoHS, CE

Frequently Asked Questions - Quant Gemi Noise Engineering

What is the Quant Gemi module used for?

The Quant Gemi is a CV quantizer and chord generator for Eurorack synthesizers. It maps incoming voltages to notes in a selected scale and can output chords.

What power requirements does the Quant Gemi have?

It requires +12V at 80 mA and -12V at 20 mA via a standard 10-pin ribbon cable. Ensure your case provides adequate power.

How do I connect the Quant Gemi to my Eurorack case?

Connect the included 10-pin ribbon cable to the module's power header and to the bus board. The red stripe indicates -12V; align it correctly. Do not reverse the cable.

Can I use the Quant Gemi with any VCO?

Yes, it outputs 0-10V CV compatible with most VCOs that follow the 1V/oct standard. It works best with analog or digital oscillators.

What scales are available on the Quant Gemi?

The module includes 12 scales such as major, minor, pentatonic, and various exotic scales. The scale is selected via the front panel knob.

How do I generate chords with the Quant Gemi?

The module can output triads or extended chords on its three CV outputs. The chord type is set via a dedicated knob, and the root note follows the input CV.

Is the Quant Gemi firmware updatable?

Yes, firmware updates are available via a USB port on the back. Check Noise Engineering's website for the latest version and instructions.

What does the trigger input do?

The trigger input freezes the quantization or advances through chord voicings, depending on the mode. It can be used to sync changes to a clock.

How do I clean the Quant Gemi?

Use a soft, dry cloth to gently wipe the front panel. Avoid using liquids or abrasive cleaners. Remove power before cleaning.

What should I do if the module doesn't power on?

First, check the ribbon cable orientation and ensure the power connector is fully seated. Verify that your case's power supply is working. If the issue persists, contact Noise Engineering support.

USER MANUAL Quant Gemi Noise Engineering

Noise Engineering Quant Gemi

Quad octave switch and mult

Noise Engineering

Overview

Type	Quad octave switch/mult
Size	4HP Eurorack
Depth	.8 Inches
Power	2x5 Eurorack
+12 mA	40mA
-12 mA	40mA

Quant Gemi is a small transposition/split utility. Each channel can be used to transpose a sequence up 0, 1, or 2 octaves. The channels are also normalled together so the same sequence can be split up to 4 ways and transposed separately.

Etymology

Quant -- from Latin quantus: “how many” Gemi -- from Latin gemino: “to pair or double”

"Multiple doubling"

Input & output voltages

QG is designed to work with the widest range of voltages possible, so anything within -8v to +8v should work fine, if you really need a 16-octave melody in your patch somewhere.

Power

To power your Noise Engineering module, turn off your case. Plug one end of your ribbon cable into your power board so that the red stripe on the ribbon cable is aligned to the side that says -12v and each pin on the power header is plugged into the connector on the ribbon. Make sure no pins are overhanging the connector.

Line up the red stripe on the ribbon cable so that it matches the white stripe and/or -12v indication on the board and plug in the connector.

Screw your module into your case BEFORE powering on the module. You risk bumping the module's PCB against something metallic and damaging it if it's not properly secured when powered on.

You should be good to go if you followed these instructions. Now go make some noise!

A final note. Some modules have other headers -- they may have a different number of pins or may say NOT POWER. In general, unless a manual tells you otherwise, DO NOT CONNECT THOSE TO POWER.

-12V

Warranty

Noise Engineering backs all our products with a product warranty: we guarantee our products to be free from manufacturing defects (materials or workmanship) for one year from the date of the original retail purchase (receipt or invoice required). The cost of shipping to Noise Engineering is paid by the user. Modules requiring warranty repair will either be repaired or replaced at Noise Engineering's discretion. If you believe you have a product that has a defect that is out of warranty, please contact us.

This warranty does not cover damage due to improper handling, storage, use, or abuse, modifications, or improper power or other voltage application.

Interface

Switches 1-4:

Adds 0, 1, or 2 volts (octaves) to the input CV.

Inputs 1-4:

CV inputs. These are normalled together so QG can be used as a mult. Patching to a second input breaks the normal.

Outputs 1-4:

CV outputs. Transposed sequence comes out here!

Patch Tutorial

Patch 1:

Patch a pitch sequencer (like Mimetic Digitalis) to QG's first input. Patch the output to an oscillator. Use the first switch to transpose the sequence.

Patch 2:

QG can be used as a mult. Patch the additional outputs to other pitch CV destinations and use the switches to transpose each channel separately. This is useful for a number of things; route the same sequence to both pitch inputs of a complex oscillator like Loquelic Iteritas and use QG's octave switches to change timbre. Similarly, patch one channel to an oscillator and one channel to a keytracking filter's 1v/8va input and use QG's transposition to change timbre in a subtractive patch.

Patch 3:

Using a precision adder like Quantus Pax, QG can be used to transpose multiple sequences. Take the outputs of QP and route them to channels 1-4 on QG to transpose them separately. Conversely, patch an output of QG to one of QP's xpose inputs to transpose multiple sequences at once.

graph TD
    A["Input 1"] --> B["Quant Gemini"]
    B --> C["2"]
    C --> D["0 + 1 + 2"]
    D --> E["3"]
    E --> F["Output Out"]
    F --> G["In 4"]
    G --> H["Noise Engineering"]

Design Notes

The QG was a pretty simple design dreamed up when we decided to make the QP and several other modules that we have in the pipeline. The schematic was pretty simple and we had a mockup pretty quickly. The first version was pretty spot on except for two things: we didn't think to normal the jacks, and the switches were not ideally laid out. We revised the hardware, making both of these changes, and voila!