In its original form the SEM LFO outputs a triangle wave and can control the VCOs & VCF. We have expanded this to include additional waveforms, the controls for which are included on the rear of the SEM.

LFO Front Panel Controls

LFO1 Knob

This governs the frequency or rate of LFO.

LFO1 Sync Switch

When moved to the right position, this synchronises the rate of LFO 1 to your host tempo, and enables rates of between 16 beats and 1/32 of a beat.

LFO Rear Panel Controls

<aside> ⚠️ To access the rear panel click the EXTEND or FLIP tab buttons in the corners of the SEM front panel.

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LFO1 Wave Knob

As per the original hardware SEM, the default waveform for LFO1 is a Triangle. However, we’ve included a few other waveforms which are selectable via this knob. Additional options are:

• Sine
• Ramp
• Square (positive only)
• Square
• Noise (Sample & Hold)

Retrigger Switch

When activated this resets the waveform phase every time a note-on event occurs.

Intro Knob

This applies a degree of ramp in, or delay before the LFO1 Rate takes effect. When the LFO1 Rate Switch is set to SYNC, the Intro (or Delay) Time is synchronised to the host tempo, with settings between a minimum of 1/32 and 16/4.