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Make Noise XPO Manual
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Make Noise XPO Manual

Stereo prismatic oscillator
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Stereo Prismatic Oscillator
(XPO)

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Summary of Contents for Make Noise XPO

  • Page 1 Stereo Prismatic Oscillator (XPO)

  • Page 2: Table Of Contents

    Table of Contents Limited Warranty Installation Panel Controls and Inputs/Outputs Waveform Outputs Frequency Controls Timbre Controls Tips and Tricks Patch Corner...

  • Page 3: Limited Warranty

    Make Noise to be the fault of the user are not covered by this warranty, and normal service rates will apply. During the warranty period, any defective products will be repaired or replaced, at the option of Make Noise, on a return-to-Make Noise basis with the customer paying the transit cost to Make Noise.

  • Page 4: Installation

    Eurorack style bus board, minding the polarity so that the RED stripe on the cable is oriented to the NEGATIVE 12 Volt line on both the module and the bus board. On the Make Noise 6U or 3U Busboard, the NEGATIVE 12 Volt line is indicated by the white stripe.
  • Page 5 Sine waves, Triangle waves, Sawtooth and Spike waves, and Sub-Octaves. The XPO is designed as the Stereo VCO complement to our Stereo Quad core VCF QPAS, as is the core idea of complex circuits being controlled in multiple dimensions in the stereo field by a few powerful parameters. The Stereo Prismatic Oscillator also makes a particularly useful patch buddy for the STO, Mimeophon, and X-PAN.
  • Page 6 8. Modulate-L CV Input. CV Input for Modulate-L. Also controls Modulate-R when Modulate-R CV Input is unpatched. 9. V/Oct input (1). Sets core frequency of the XPO via external control, tracks one volt per octave. Summed with Pitch control and V/Oct input (2).
  • Page 7 Panel Controls (cont.) XPO Panel Controls s (Cont.) 16. Modulate-R CV Input attenuverter. Bipolar input attenuverter for Modulate-R CV Input. 17. Modulate-R CV Input. CV Input for Modulate-R. Normaled to Modulate-L CV Input.
  • Page 8 Panel Controls (cont.) XPO Panel Controls s (cont.) 1. Sine output. ~10V peak to peak. 2. Triangle Output. ~10V peak to peak. 3. Sawtooth Output. ~9V peak to peak. 4. Spike Output. ~12V peak to peak. 5. Sub Output. ~12V peak to peak.

  • Page 9: Waveform Outputs

    The Sine wave is shaped from the Triangle using the same circuit used on the DPO and STO. The Sawtooth, Spike, and Sub outputs are new for XPO. These outputs are useful on their own as traditional VCO outputs to be processed via VCAs, filters etc.
  • Page 10 Stereo Outputs Along the right side of the XPO are three pairs of Stereo outputs that are derived from the oscillator core. These outputs provide great audio sources for stereo processing modules such as QPAS or Mimeophon. All three output pairs receive timbral modulation from the Modulate L/R parameters, and can be used in Mono via their Left output when the Right is unpatched.
  • Page 11 It is this MONO functionality that allows Make Noise to create the elusive Bat waveform. The Wavefolding outputs utilize wavefolding circuits similar to the Final output on the DPO and the Multiply circuit on 0-Coast.

  • Page 12: Frequency Controls

    Frequency Controls The 1v/oct inputs are for sequencing or controlling the XPO’s pitch via sequencer, keyboard etc. They are factory calibrated to track one volt per octage and are ideal for sequencing with 1v/oct quantized sources such as René, or analog unquantized sources such as 0-CTRL.
  • Page 13 The Linear FM input is well suited to audio-rate FM via other VCOs, fast cycling functions from MATHS, or self-patching from the XPO itself. The input is normalled to a version of the Sub Oscillator output, which allows for the superimposition of sub- harmonics without the need to mix in the Sub-Oscillator with the other waveform outputs.

  • Page 14: Timbre Controls

    Timbre Controls The three stereo output pairs (PWM, Vari-Timbre, Wavefolding) are each affected by the Modulate L/R controls in a unique way (see Stereo Outputs above for more information). For all stereo pairs, Modulate L affects only the Left output, while Modulate R affects only the Right output. When using only the Left output jack, both outputs are mixed together for a Mono version and will be affected by both Left and Right Modulate controls.

  • Page 15: Tips And Tricks

    XPO itself. For example, the Spike wave makes a great frequency modulator for a low pass filter, adding a subtle high frequency sheen back on to sounds that have had their edges shaved off. When the XPO is also the sound source, modulations patched in this way will be "in tune"...

  • Page 16: Patch Corner

    Patch Corner - coming soon!!