Module A-174-4 outputs three control voltages generated by a spring-loaded X/Y cross potentiometer (joy stick) and a Gate signal. The control voltages for X and Y are controlled by the X and Y position of the joystick in the usual way. The third control voltage Z is controlled by the rotation of the spring-loaded joystick knob. The Gate signal is generated by a button at the center/top of the joystick knob.

For each control voltage the non-inverted signal (X, Y, Z) as well as the inverted signal with adjustable offset (-X+XO, -Y+YO, -Z+ZO) are available.

The "Overlap" switches can be used to add a fixed offset voltage of typ. +5V to the non-inverting output in question so that the output voltage range changes to typ. 0...+10V (rather than -5...+5V). That's necessary if e.g. a VCA has to be controlled, which requires a pure positive control voltage range. The switches are named "overlap" because they allow the overlapping of the non-inverting CV output (X, Y, Z) with the inverting output (-X+XO, -Y+YO, -Z+ZO) for crossfading applications.

Video: https://youtu.be/IHPqJnpkmnM

Product Specs

• Item Number: 13905
• Make: Doepfer
• Model: A-174-4
• Condition: Brand New
• Finish: Silver
• Categories: keyboards-and-synths ⇒ eurorack
• Function: Controller CV Modulation Expression
• Made In: Germany
• MPN: A-174-4
• EAN: 4250711117443
• Modular Grid: Eurorack ⓘ ＋
• Dimensions*: 12 HP 50 mm deep
• Power*: 50 mA +12V 20 mA -12V ? mA 5V

* User contributed details