DOEPFER A-145-4 is a simple quad LFO (Low Frequency Oscillator). Not a very "exciting" module, just a bread-and-butter device and a simple demon for work. Virtually in every modular system several LFOs are required for modulation purposes. The module contains four simple LFOs with the waveforms triangle and rectangle. A dual color LED (red = positive / yellow = negative output voltage) indicates the triangle output of each LFO. The frequency range can be chosen for each LFO individually by means of a jumper between about 50 Hz ... 0,1 Hz (about 10 seconds, jumper removed) and about 2Hz ... 0,004 Hz (about 3-4 minutes, jumper installed).
Key Features:
- Four LFOs with independent rate controls
- Simultaneous square and triangle outputs
- Default frequency range of 25 seconds per cycle to 50Hz
- Expanded frequency range via internal jumper of 8 minutes per cycle to 2Hz
- 4HP Eurorack module
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