The module has two control sections:
- The exponential section consists of the XTune control, the 1V/Oct input and the XFM input with the corresponding attenuator XFM.
- The exponential control voltage is the sum of these three voltages. The linear section consists of the LTune control and the LFM input with the corresponding attenuator LFM. The linear control voltage is the sum of these two voltages.
The main advantage of the A-110-4 compared to other Thru Zero VCOs is that the design uses a sine/cosine core. The sine/cosine waves are not derived from other waveforms (e.g. sawtooth or triangle) by means of waveshaping. Rather the sine and cosine waves are the core of the VCO which results in very pure waves with a minimum of distortion and overtones.
With it's both control possibilities, linear and exponential, as well as it's thru-zero ability, the VCO is perfectly suited for all types of FM applications.
inputs: 1V/oct, exponential FM (XFM), linear FM (LFM)
outputs: sine, cosine
3U Eurorack module, 10HP wide, 60mm deep
power consumption: 90mA