Döpfer A111-4 - Quad Precision VCO

Provides VCO, Sawtooth, Square, Triangle, FM, PWM

Four precision VCOs with individual controls, inputs and outputs as well as a common control and output unit.

18 HP (91 mm), 120 mA @ +12V, 100 mA @ -12V, 0 mA @ +5V

Made by Döpfer.

Front panel

1V  +/-                          Tri  Sq
        Tune         ModLevel
Mod           XM/LM|PM           Saw  Snc

1V  +/-                          Tri  Sq
        Tune         ModLevel
Mod           XM/LM|PM           Saw  Snc

1V  +/-                          Tri  Sq
        Tune         ModLevel
Mod           XM/LM|PM           Saw  Snc

1V  +/-                          Tri  Sq
        Tune         ModLevel
Mod           XM/LM|PM           Saw  Snc

1V  +/-                          Tri  Sq
        Tune         ModLevel
XM                               Saw  CVOut

Labels of switch positions and rotary detents

+/- (switch)
-1, 0, +1
XM/LM|PM (switch)
XM, LM, PM
+/- (switch)
-1, 0, +1
XM/LM|PM (switch)
XM, LM, PM
+/- (switch)
-1, 0, +1
XM/LM|PM (switch)
XM, LM, PM
+/- (switch)
-1, 0, +1
XM/LM|PM (switch)
XM, LM, PM
+/- (switch)
-1, 0, +1

External links

See the homepage for more details.

Schneiders Laden has a page about this module.