Manipulate CV and audio signals with the 4ms Shifting Inverting Signal Mingler, a 4-channel voltage manipulator Eurorack module that can scale, invert, attenuate, shift (DC offset), mix, split, and slice control voltage and audio signals.
Each of the four channels are independent and have an input and output jack, a knob for attenuating/inverting (Scale), a knob for applying positive or negative DC offset (Shift), and two LEDs. Four jacks on the bottom combine the four channels in different ways. The SISM ships with a ribbon power cable and mounting screws.
Basic Overview
- Four independent voltage processor channels and four mix/mingle outputs
- Each channel has:
- Input jack
- SCALE knob (from inverted unity, to zero, to unity), center detented
- SHIFT knob (adds/subtracts DC offset from -9.5V to +9.5V), center detented
- Output jack
- Red and blue LEDs indicate positive and negative signal, respectively. Brighter means more voltage, dimmer means less
- MIX jack outputs sum of all channels
- MIX Switch jack outputs sum of all channels with nothing plugged into their output jack
- +SLICE jack outputs positive portion of mix (voltages greater than 0V)
- - SLICE jack outputs negative portion of mix (voltages less than 0V)
- Red and blue LEDs on all four mix/mingle jacks indicate positive and negative signal, respectively. Brighter means more voltage, dimmer means less
Advanced Features
- Inputs for channels 1+2 and 3+4 are normalized together:
- Plugging into Channel 1 (or 3) will split the signal to channels 1 and 2 (or to 3 and 4)
- A jumper on the back enables/disables this normalization
- • Scale knob has three ranges that are selectable with jumpers:
- Bipolar: -1x to +1x (inverting unity to unity)—default
- Unipolar: 0 to +1x (level fader)
- Boost: 0 to +2x (twice the voltage gain)
- Input Header (2x4):
- Connects the output of a QCD or QPLFO to the SISM's inputs
- Plugging into the SISM input jacks overrides the signal on the header
- Output Header (2x4)
- Connects the SISM's channel outputs to the input of a VCA Matrix or other compatible module (Mixiplexer or Intermix)
- PAD breakout header (2x4)
- Can connect to an external DIY module that enables a preset pad (attenuation) on each channel
Usage
- Attenuator (quad)
- Inverter (quad)
- Level shifter/DC offset (quad)
- Mixer (4 inputs)
- Splitter (dual 1->2, or single 1->4 using a stackcable or passive mult)
- Bipolar audio mixing: Useful for mixing various filter outputs with the original signal to create new filter curves
- Voltage slicer: + and - portions are separated and outputted to the + and - SLICE jacks
- Dirty panning: apply a large slow wave to one channel, and the other channels will pan between the SLICE jacks. The signals are half-wave rectified as they span both outputs
- LFO mingler: connect QPLFO outputs to SISM inputs
- Sequencer: connect QCD outputs to SISM inputs (or any clock divider/multiplier) and take the sequencer output from the MIX jack
- Add attenuation and inversion to any CV jack on other modules
- Keep all your fine-tuning controls for several modules in one place
- Manual voltage generator. With no input connected, each channel outputs a steady DC voltage controlled by the SHIFT knob
Eurorack Ready
- 12 HP Eurorack format module
- Maximum Depth: 0.86" (22mm)
- Includes power ribbon cable with 16-pin Eurorack power header
- Power consumption: +12V: 51mA, -12V: 51mA