QLFO

The ACL QLFO is a quadrature LFO: it generates one sine wave and three phase-shifted copies of it, at 90° (cosine), 180° (inverted sine) and 270° (inverted cosine), each on its own output.

Key features

• The RATE knob sets all four together over three ranges chosen with the SLOW / MID / FAST switch
• From very slow modulation up to above the audio range, so it can also serve as a simple sine VCO
• Voltage controlled through the RATE CV input and its DEPTH attenuverter
• A second input tracks 1 V/octave over two to three octaves
• Quadrature outputs suited to stereo modulation
• Patching an output back into RATE CV, or several QLFOs into one another, turns the sine into new waveforms, up to pseudo-chaotic signals