JLH-822 project page
The 822 is a 2-IN, 2-OUT voltage shifter that provides 3 octaves up or down of shift and interval shifting in semitones (all tunable). If you want to shift 2 oscillators, one up an octave and one up an octave and a fifth, you are only a flick of a switch away. The 822 is also useful for transposing on the fly.
The 822 schematic has been revised. VR18, VR19, R30, and R31 are tweaked. This is not a required update.The 822 PCBs are sold out and no longer available
Rotary switch issues
Schematics – Revised 2/5/02