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Doepfer A-110-2 Basic VCO Module
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+44 20 7424 1960
(quote 692512)
- Voltage controlled oscillator
- 3-Position toggle switch
- Linear FM input and soft-sync input
- Tune control range can be set between approx. 1/2 octave and 4 octaves via a jumper
- Width: 8 HP / 40.3 mm
| Module Type | Voltage Controlled Oscillator (VCO) |
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- Computer software that has been unsealed or registered
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Doepfer A-110-2 Basic VCO Module
All other features are essentially the same as for the A-110-1.
Explanation of the jumpers and trimming potentiometers:
- JP2: CV connection to A-100 bus
- JP3: range of Tune control (installed = about 4 octaves, not installed = about 1 / 2 octave)
- JP4: AC / DC coupling of the linear FM input (installed = DC coupling, not installed = AC coupling)
- P5: 1V / Oct scale
- P6: frequency offset
- P7: high-end trim
- P8: adjustment +1 Oct. range switch
- P9: adjustment -1 Oct. range switch
- P10: temperature VCO heater
The core of the A-110-2 is - like the A-110-1 - a sawtooth oscillator (in contrast to the A-111-1, which is based on a triangle oscillator). The other waveforms are derived from the sawtooth by waveform converters. As the sawtooth reset (i.e. the back-to-zero slope) is not infinitely fast but takes a little bit of time the triangle is not perfect! At the bottom of the waveform it has a small glitch or notch that is caused by the sawtooth reset and cannot be eliminated by the waveform converter. If a perfect triangle is required, the A-111-1 is recommended.
The sawtooth output of the A-110-21 has a falling (or negative) slope. The front panel shows erroneously a rising (or positive) slope. This has no influence on the sound but becomes important when the module is used as an LFO or is mixed with the sawtooth output of another VCO.
The control voltage applied to the socket 1V / Oct is added to the control voltage coming from the bus (interruptible by removing the jumper JP2). Connecting a cable to the socket 1V / Oct does not interrupt the bus CV connection!
Specifications
| Module Type | Voltage Controlled Oscillator (VCO) |
Doepfer A-110-2 Basic VCO Module
