MFB OSC-01 Operating Manual page 2

Ring-modulator
OSC-01 includes a digital ring-modulation circuit. Its output is at RingOut. The sound results
from the selected waveforms as well from the oscillator detuning. Ring modulation is factory
set as interaction between OSC1 and OSC2. Removing the jumper Ring3 at the back panel's
mid will also include OSC3 here.
Hard-sync
The OSC-01's oscillators can be synchronized internally or to an external oscillator. With
internal sync, OSC3 acts as master. His lower base octave is best suited for typical sync
sounds. Depending on the setting of the Sync switch, either OSC1 alone or OSC1 and OSC2
slave to OSC3. Inputs CV4 and CV5 can be used to control the synced oscillators with
envelopes, LFOs or CV-sequencer signals.
Any input signal patched to Sync In will dictate the master-frequency replacing OSC3. It is
recommended to use a square oscillator to do so. Other waveforms usually won't deliver any
or an inadequate master frequency.
Calibration
With OSC-01 being a digital controlled module, tuning is not necessary. Inputs CV1, CV2
and CV3 can be adjusted in spreading collectively. Use the trim-potentiometer on the
module's back.
Operating manual
OSC-01 Module