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A-110-4 is a so-called Thru Zero Quadrature VCO. The term “quadrature” means in this connection that the oscillator outputs sine and cosine waveforms simultaneously. The term “Thru-Zero” means that even “negative” frequencies are generated. But this a bit a misleading term as negative frequencies do not really exist. “Negative” means in this connection simply that the sine/cosine waves will stop when the linear control voltage reaches 0V and continue with the opposite direction as the linear control voltage becomes negative and vice versa.
Important note: Please remove the bus jumper (JP3 “BUS CV”) if no CV transmitter is installed on the same bus (e.g. a Midi/USB-to-CV interface A-190-x or a bus access module A-185-x). The A-110-4 applies a small voltage with high impedance (100k) to the CV line of the bus when the bus CV jumper is installed. This may affect other modules that pick-up CV from the bus (e.g. other VCOs). As soon as a CV transmitter is installed on the same bus the high impedance voltage of the A-110-4 is overwritten and no problem occurs !
- Width: 10HP
- Depth: 60mm
- Current draw: 90mA
