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Keith McMillen Instruments QuNexus User Manual

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Download this manual See also: Reference Manual
QuNexus Version 1.1.1
July, 2013
Connect QuNexus to Synthesizers or other CV devices:
The images to the right below show QuNexus connected to a CV device. There are 3 different
ways to set this up:
Powered by a Computer (or iPad):
1. Use a USB A-to Micro cable to connect
the QuNexus Micro port to a USB port
on a computer or iPad. This connects
the QuNexus to power.
2. Use a cable that is compatible with your
CV device's CV ports. Using adapters if
needed, make sure one end can plug
into one of the stereo 1/8in. CV out ports
on the QuNexus.
3. Plug your cable into the "Gate-CV1 Out"
port on the left side of the QuNexus.
Plug the other end into the desired
destination on your CV device.
Powered by KMI MIDI Expander:
1. Use a USB A-to-Mini cable to connect
the QuNexus Mini port (on the right side
of the QuNexus) to the USB "Expand"
port on the MIDI Expander.
2. Connect the power supply to the MIDI
Expander USB "Power" port.
3. See steps 2 and 3 from the "Powered by
a Computer" steps.
QuNexus CV Manual
1

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Summary of Contents for Keith McMillen Instruments QuNexus

  • Page 1 QuNexus Version 1.1.1 July, 2013 Connect QuNexus to Synthesizers or other CV devices: The images to the right below show QuNexus connected to a CV device. There are 3 different ways to set this up: Powered by a Computer (or iPad): 1.
  • Page 2 Using adapters if needed, make sure one end can plug into one of the stereo 1/8in CV out ports on the left side of QuNexus. QuNexus’ CV input port (on the right side) requires one end to be a 3.5 mm TRRS (like the ones used for Apple iPhone headsets).

  • Page 3: Cable Connections

    Cable Connections There are 2 CV output ports on the left side of the QuNexus and 1 CV input port on the right side. Outputs - Since the two output ports use stereo 1/8in connectors (TRS - shown below), they provide 4 outputs: a gate output and three 16-bit CV outputs.
  • Page 4 We recommend the Roland EV-5. CV Cable Kit The QuNexus CV Cable Kit is an optional add on, which makes it easy to gather the cables and adapters needed to convert MIDI to CV and vice versa using QuNexus.
  • Page 5 3.5mm (1/8in) stereo plug to dual 3.5mm (1/8in) mono plugs This is helpful for splitting the second CV output into CV2 and CV3 CV to MIDI Data Conversions Output: By default, QuNexus sends different data out Input: By default, QuNexus receives data from the 2 CV inputs and...
  • Page 6 Converting CV Input from +/- 10V to 0V/5V QuNexus’ CV In is uni-polar. If you send it a bi-polar signal, half of the signal will be clipped and can cause malfunctions in extreme cases. Sending a signal above 5 Volts is also unsupported.
  • Page 7 Dual Expression and Sustainer Inputs It is possible to create a TRRS cable wired so that you can use two Expression or Sustainer pedals with QuNexus. Though we do not provide these, you can make them using the schematics shown below:...

  • Page 8: Steps To Convert Midi To Cv

    Scenario 1: QuNexus plugged into a power supply (No Computer, No MIDI Expander) Use Case: This is the simplest set up and works great if you just want the QuNexus Keyboard to play a CV Device. 1. Plug QuNexus into a power supply using a USB A to micro cable.
  • Page 9 MIDI Data on. 5. Set the "MIDI To" menu to QuNexus Port 3 (the CV port). Set the Channel to "Ch. 2" if you are using a Factory Presets. All Factory Presets use Channel 2 for CV output and input.
  • Page 10 5. Create a MIDI Track and set its "MIDI From" menu to “All Ins” (set channel to all channels). 6. Set the "MIDI To" menu to QuNexus Port 3 (the CV port). Set the Channel to "Ch. 2" if you are using a Factory Presets. All Factory Presets use Channel 2 for CV output and input.
  • Page 11 Note ons and offs will go out the Gate, note pitches will go out CV1, CC1 (Mod) will go out CV2, and pitch bends will go out CV3. 11. Play the QuNexus, it should work. (Make sure your CV device is connected to speakers/ headphones).
  • Page 12 4. Open the Audio/MIDI software you wish to convert CV to MIDI with (like Ableton Live). 5. Check Ableton’s MIDI Preferences to make sure QuNexus Port 1 and Port 3 are enabled for MIDI Input and Output. In Ableton, make sure to enable the remote column for Input from Port 1 and Port 3.