Each Surge XT LFO exposes three independent outputs: full LFO, raw waveform only, and envelope only

Each Surge XT LFO slot provides three separate modulation outputs accessible via the modulation source context-menu. The default ‘full LFO’ output combines the waveform and the DAHDSR envelope. ‘Raw Waveform’ bypasses the envelope completely, providing the pure waveform at its set Rate and Amplitude. ‘Envelope Generator Only’ provides just the DAHDSR output, ignoring the waveform shape. These are treated as independent modulation sources — you can route all three to different parameters simultaneously. A useful application: use ‘Raw Waveform’ for a continuous LFO sweep on filter cutoff while using ‘Envelope Generator Only’ to control amplitude, each independently from the same LFO slot.

Examples

Route LFO 1’s Raw Waveform to filter cutoff for a perpetual sweep, and LFO 1’s Envelope Only to VCA gain for an attack-decay shape — all from one LFO slot.

Assessment

What is the functional difference between the ‘full LFO’ output and the ‘Raw Waveform’ output? Give one example of a patch where routing the EG Only output to a different parameter than the Raw Waveform would be musically useful.