Module description

A Quad Low Frequency Oscillator module.

This features four identical LFO circuits on a single PCB - each LFO having six switchable output waveforms and a rate control.

LFOs are very useful in many sound synthesis techniques and, although PCBs for the 80-3 and 80-19 modules are still available, the 80-23 provides four extremely cost effective LFOs for applications where voltage control of the LFO is not required.

Construction information

• Digisound document (470KB pdf file)
• PCB foil diagram (37KB gif file)
• PCB size (mm) 160 x 65

Note: this PCB foil diagram is a re-drawn version by Chris Crosskey and does not necessarily adhere to the original PCB size or exact layout (but it's close).

Front panel designs

• Original 9 x 3 inch (3KB fpd file)
• MOTM-format 5U x 2U (3KB fpd file)

For more Digisound-related documents, please refer to the Other Digisound documents page.