Home > Instruments > Pro Keyboards > Synthesizers >

Doepfer A-110-1 Standard VCO Module
Doepfer A-110 Standard VCO Module
 
Alternative Views:


Doepfer A-110-1 Standard VCO Module

Standard VCO with Rectangle, Sawtooth, Triangle, and Sine Waveforms Eurorack Module - 10hp
List Price: $199.00
Our Price: $199.00
Found a Better Price? Let Us Know.


Availability: Usually Ships in 2 to 3 Days
Product Code: SKU43736
Qty:

Description
 

Doepfer A-110-1 Standard VCO Module

Module A-110-1 is a voltage-controlled oscillator. This VCO's frequency range is about eight octaves (ca. 15Hz ... 8kHz). It can produce four waveforms simultaneously: rectangle, sawtooth, triangle, and sine wave (triangle and sine shapes are not perfect, see remark below). The output levels are typically 8Vpp for saw and rectangle, and 10Vpp for triangle and sine. The frequency or pitch of the VCO is determined by the position of the octave (Range) switch and tuning (Tune) knob, and by the voltage present at the CV inputs. Frequency modulation (FM) of the VCO is therefore a possibility. Footage (the octave of the fundamental) is set by the Range control in five steps, and Fine tuning controlled by the Tune knob. The tune knob range is about +/-1 semitone for older modules. Since about middle of 2015 the value has been increased to about+/- 1/2 octave. In the A-110 service manual is described how to modify the range.
You can control the pulse width of the square wave either by hand, or by voltage control - Pulse Width Modulation or PWM.

For more detailed information please look at the user's manual A110_man.pdf. In addition the A-110 service manual is available as an example for the A-100 service manual that is available at extra charges. This document describes also how to modify the sensitivity of the tune control (changing the value of the resistor R5), how to re-adjust the 1V/octave scale and the frequency offset (i.e. the absolute pitch). Such modifications should be carried out by experienced users only !

Specs:
  • current draw -70ma
  • 10hp

Write a review »