The Spectraphon's Outputs

Each Side of the Spectraphon features four outputs.

The primary outputs are the Odd and Even outputs.

These contain the odd and even harmonics, respectively, of the output of the Spectraphon, as determined by the current spectrum and any FM or Partials modulation. The Even output is normalized such that when it is unpatched, both outputs are summed together in the Odd output. When in SAO, the Even output can also be offset in pitch by up to an octave using the A/B-In attenuator, or modulated in pitch separately using an external signal.

The Sine wave output always oscillates at the core frequency of the Side as set by Pitch, Fine Tune, and 1v/oct input - even under heavy frequency modulation (something that is not possible with analog VCOs).

The Sine output is unaffected by all other controls including FM and Partials. It is useful for keeping a strong fundamental during heavy harmonic modulation.

The Sub/CV output is an Envelope Follower (SAM) or Sub-Oscillator (SAO).

The Envelope Follower (SAM) will create modulation in sync with any changes in amplitude in the source material.

The Sub-Oscillator (SAO) will provide a strong deeper signal to use alongside the harmonic outputs.

Side A's Sub-Oscillator is a Sawtooth, while Side B's is a Saturated Sine Wave. Alternatively, each Sub/CV output can be set as a clocked modulation output. See "Modulation and Clocking" below.