This section contains all the knobs & buttons associated with the LFOs. The LFOs ( Low Frequency Oscillators ) produce regular
electronic variation which are normally too low a frequency to be heard when converted into audio vibrations. However when used
to modify various elements of the sound they can be used to create regular changes in pitch ( Vibrato ) or Pulse width & Filter
Modulation.
( these create tonal changes in the waveforms ) for example.
LFO 1 - Button
Filter - Button
Speed - Knob
Delay - Knob
The LFO 1 & LFO 2 buttons select which LFO the Speed & Delay knobs are going to adjust. To adjust LFO 1 press the LFO 1 but-
ton. To adjust the LFO 2 press the LFO 2 button.
With the LFO 1 button selected & lit, the Speed knob controls the rate at which LFO 1 oscillates. Turning the Speed knob fully anti-
clockwise sets the LFO running at its slowest speed ( which is actually stopped ) & turning the Speed knob fully clockwise sets the
LFO running at its highest speed ( Which can be KHz ).
With the LFO 1 button selected & lit the Delay knob controls how long after the note is struck before LFO 1 begins to take effect. If
the knob is fully anticlockwise LFO 1 will begin immediately. As the knob is turned clockwise it will take increasingly longer for the
LFO effect to be introduced.
This is particularly useful for vibrato effects where if present as the note is struck, can make the note sound out of tune. Turning the
Delay Knob slightly clockwise, LFO 1 will not be introduced until after the note is struck, thereby removing the problem.
If you have problems getting LFO 1 to take effect, make sure the delay knob is not set fully clockwise.
Square - Button
Saw - Button
Tri - Button
S/H - Button
These Buttons select which waveform the selected LFO has.
The Tri button selects a Triangle waveform. This waveform gives the smoothest, continuous change in level to the LFO & is there-
fore probably the most useful setting. When used in the Oscillator Section it gives you vibrato ( if used at moderate speed & subtle
amount ) or “Siren” effects ( if used at slow speeds & large amount ) or FM type effects ( if used at high speed & subtle amount ). If
used with the Filter slow speeds produce Wah Wah effects.
The Saw button selects a Sawtooth waveform. This waveform looks like the teeth of a saw ( from which it gets it’s name ) & gives
you a falling level which suddenly jumps back up to full level. When used in the Filter it produces a rhythmic pulsating effect, similar
to a sequenced repeated bass line. When used in the Oscillator Section it can be used to create “Alarm” type sounds.
The Square button selects a waveform that looks square ( from which it gets its name ) & changes instantly from one level to
another. This is useful for Trill & Computer Game effects.
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