Doepfer A-145 LFO

Module A-145-1 is a low frequency oscillator, which produces cyclical control voltages in a very wide range of frequencies. Five waveforms are available: sawtooth, inverted sawtooth, triangle, sine and square wave. The LFO can be used as a modulation source for any number of modules - for instance modulating the pulse width or frequency of a VCO, modulation of the cut-off frequency of a VCF, or amplitude modulation with a VCA. A three-way switch lets you select three frequency ranges, spanning from one cycle every several minutes at the lowest, to moderate audio frequency at the highest (about 4-5 kHz). The LFO signal can also be synchronised, via the reset input. Typical frequency ranges depending upon the position of the Frequ. Range switch: H: about 10Hz - 4.5kHz M: about 0.1Hz (10 seconds period) - 50Hz L: about 0.005 Hz (3.5 minutes period) - 5Hz