The SSL 1200 “VCO 1” is a compact, high quality, precision voltage controlled oscillator for MU-format modular synthesizers, with an impressive number of functions for a single width VCO. Capable of accurate tracking over many octaves, it is also capable of acting as a relatively flexible low-frequency oscillator (LFO). With a time-tested sawtooth core, the 1200 uses highly matched integrated transistor pairs and quality temperature compensating resistors provide excellent stability.
One of three common waveforms – Triangle, variable width Rectangle, and Sawtooth may be switch selected to the Wave output, and a separate Sine output is continuously available.
External frequency modulation is switch selectable between linear and logarithmic. The depth of this external modulation is controlled by the CV AMT knob, and opens the door to many new timbres when modulated from other oscillators.
Sync (“hard sync”) input can be used to lock two oscillators together to prevent “beating” effects or to provide dynamic timbral variations. Modulating the 1200 VCO’s CV IN jack opens up a whole new range of sonic possibilities. Though not necessary in most cases, the input signal should be a clean rising edge (i.e. from a pulse or sawtooth wave) to achieve best results.