Dubmix Manual

Overview

The Dubmix series of modules provides a complete expandable CV-controlled mixing system for your modular. Each core Dubmix module can be expanded ribbon cables with one Aux Expander and one Mini Expander. A Dubmix can also be connected via a ribbon cable to an audio out module such as the µJack for convenient interfacing with other equipment. Multiple Dubmix units can be chained via ribbon cables to mix their L and R busses.

The Dubmix Mini Expander allows for voltage control of input levels, as well as providing direct outs and an additional pair of inputs directly in to the main mixer bus.

The Dubmix Aux Expander adds two additional auxiliary busses with full voltage control over levels.

Installation

See the Module Installation Guide for instructions on installing the module in your Eurorack modular system.

Dubmix

The Dubmix is the main module in the series, to which all the others attach.

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The description of the functionality below is divided in to separate descriptions for the centre master section, and then common functionality for each channel strip.

Dubmix Master Section

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Dubmix Master Controls

  1. MASTER
    This knob controls the final output level of the and outputs.
  2. L/MUTE
    This switch toggles the function of the meter between displaying the level of the L bus and the mute bus.
  3. R/AUX A
    This switch toggles the function of the meter between displaying the level of the R bus and Aux A bus.
  4. AUX A SEND
    This knob controls the overall level of the signals sent to the Aux A send output.
  5. AUX A RETURN L
    This knob controls the level of the AUX A RETURN L input mixed back in to the L bus.
  6. AUX A RETURN R
    This knob controls the level of the AUX A RETURN R input mixed back in to the R bus.

Dubmix Master Inputs & Outputs

  1. MASTER CV
    This CV input controls the overall output level of OUT L and OUT R. The input voltage is summed with the MASTER knob.
  2. AUX A CV
    This CV input controls the overall level of the AUX A SEND output.
  3. AUX A RETURN L + R
    This audio input mixes the return signal from an Aux A send in to the L and R mixer busses. If nothing is connected to the AUX RETURN R jack then the signal from AUX RETURN L is sent there.
  4. L
    This jack outputs the audio from the L mixer bus.
  5. R
    This jack outputs the audio from the R mixer bus.
  6. AUX A
    This is the mix output for the AUX A bus.
  7. MUTE
    This audio output provides a post-fader mix of all the muted mixer channels.

Dubmix Channel Strip

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Dubmix Channel Strip Controls

The per-channel controls are labelled on the panel diagram in red. The descriptions below describe one channel but the functionality is the same for channels 1 through 4.

  1. Mute Button
    This button controls the muting of each channel. It illuminates red when a channel is muted.
  2. AUX A#
    This knob controls the level of the channel’s signal mixed in to the AUX A output. If the channel is set to post-fader, the level is first modified by the IN# knob.
  3. POST/PRE Switch
    This switch controls whether the level of signal sent to Aux A is pre- or post- fader. In pre-fader mode the full signal is always sent to the aux bus and the level is controlled solely by the AUX A# knob. In post-fader mode the signal level is controlled first by the IN# knob and then further attenuated by the AUX A# knob.
  4. PAN#
    This knob controls the panning of the channel. In the 12 o’clock position the signal is sent to both the left and right bus of the mixer at equal levels. Turning it in either direction increases the level of the signal to the corresponding bus while decreasing the level in the other.
  5. IN#
    This is the channel fader which controls the overall signal level of the channel. At full clockwise the signal has a gain of 6 dB with a soft saturation.

Dubmix Channel Strip Inputs & Outputs

The descriptions below describes one channel but the functionality is the same for channels 1 through 4.

  1. PAN #
    This input provides voltage control over the channel pan. The range is +/- 5 V. Negative values pan the signal left while positive values pan it right.
  2. IN #
    This is the modular-level audio input to the corresponding mixer channel.
  3. AUX A#
    This CV input provides voltage control over the channel aux send. The CV is summed with the position of the AUX A# knob.

Dubmix Mini Expander

The Dubmix Mini Expander adds CV control over the input levels of the main Dubmix unit, as well as direct post-fader outputs and an additional pair of inputs to mix in to the L and R busses.

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Dubmix Mini Expander Inputs & Outputs

  1. MASTER INPUT L + R
    These audio inputs sum directly in to the L and R busses of the Dubmix.
  2. DIRECT OUTPUTS 1 – 4
    These audio outputs provide a direct post-fader out of each of the four channels of the Dubmix.
  3. LEVEL 1 – 4
    These CV inputs provide control over the level fader of the Dubmix. The voltage here is summed with the position of the IN knob on the main unit.

Dubmix Aux Expander

The Dubmix Aux expander extends the auxiliary send capabilities of the Dubmix with two additional busses.

Dubmix Aux Expander Channel Strip Controls

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The description here is for a single channel but the functionality of the controls is the same for each channel 1 through 4.

  1. AUX B#
    This knob controls the level of the channel’s post-fader signal mixed in to the AUX B send.
  2. AUX C#
    This knob controls the level of the channel’s post-fader signal mixed in to the AUX C send.

Dubmix Aux Expander Channel Strip Inputs & Outputs

The per-channel inputs and outputs are labelled on the panel in red. The functionality of the controls is the same for each channel 1 through 4.

  1. AUX B#
    This CV input provides voltage control over the channel’s send to Aux B. The voltage is summed with the position of the AUX B# knob.
  2. AUX C#
    This CV input provides voltage control over the channel’s send to Aux C. The voltage is summed with the position of the AUX C# knob.

Dubmix Aux Expander Master Controls

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  1. AUX B RETURN L + R
    This knob controls the levels of the AUX B RETURN L + R inputs mixed back in to the L and R busses.
  2. AUX B MASTER
    This knob controls the master level of the mix being sent to the AUX B output.
  3. CLIP LEDs
    The clip LEDs indicate when aux send B or C master sends are clipping.
  4. AUX C MASTER
    This knob controls the master level of the mix being sent to the AUX C output.
  5. AUX C RETURN L + R
    This knob controls the levels of the AUX C RETURN L + R inputs mixed back in to the L and R busses.

Dubmix Aux Expander Master Inputs & Outputs

The global inputs and outputs are labelled on the panel diagram in blue.

  1. AUX B RETURN L + R
    This audio input mixes the return signal from an Aux B send in to the L and R mixer busses. If nothing is connected to the AUX B RETURN R jack then the signal from AUX B RETURN L is sent there.
  2. AUX B SEND
    The audio output for the Aux B bus. All channels are mixed in to this output based on their AUX B# fader level and CV input.
  3. AUX C RETURN L + R
    This audio input mixes the return signal from an Aux C send in to the L and R mixer busses. If nothing is connected to the AUX C RETURN R jack then the signal from AUX C RETURN L is sent there.
  4. AUX C SEND
    The audio output for the Aux C bus. All channels are mixed in to this output based on their AUX C# fader level and CV input.