Analogue Systems


MIDI to CV converter

Midi/CV Converter. 2X20 display. 5 controller outputs, individually defined. 3 trigger outputs individually defined, trigger, gate, S trigger or midi clock. 1 CV out (On 2 sockets) 64 memories selectable as patches over midi.

Besides the usual CV and gate outputs in addition it offers flexible controller outputs and it´s big backlit display and four function buttons make it easy to use. In the CV menu you can set the voltage characteristic of the CV outputs (either 1V/octave or 1.02V/oct as the Minimoog had), the note range of the pitchbend wheel and the modulation depth of the internal LFO. This LFO can be synchronized to MIDI Clock, has several wave forms and MIDI-controlled level. Both CV outputs carry the same signal and they are active buffered.

Each trigger socket can output a gate, a trigger or a S-trigger (for old Moogs), either as multi trigger or single trigger. Alternatively you can output the MIDI clock that´s rate can be divided down in 9 settings.

Controller: each controller output can be assigned to one of 128 Control Change commands, the pitch bend wheel, velocity or aftertouch (plus the internal LFO for controller output 1). Besides that you can set one of four output voltage ranges (0 bis 5V; -5V bis 0V; -2,5V bis 2,5V und -5V bis 5V).

All settings can be saved in the non-volatile memory and you have 64 memory slots. Each of them can be recalled by Control Change messages.

In use :


Upon its introduction in 1983, MIDI completely changed the way that we view and use synthesisers. It opened up music-making possibilities that were unthinkable a few years before, and made possible all manner of advanced sequencing and control facilities.It is for these purposes that the RS-140 was developed. With all the power of a powerful stand-alone MIDI to CV converter, it provides ten voltage outputs that allow you to control every aspect of a modular analogue synth's sound generation. It is, therefore, a perfect complement to other monophonic synthesisers, as well as to the RS Integrators for which it was designed.

Unfortunately, there is a community of Luddites that clings to the view that analogue is good , so digital must be bad. MIDI, being digital, falls into the "bad" camp, and is (they believe) to be avoided. Don't fall into this trap (a) because it's a load of old hogwash, and (b) because MIDI will open up many possibilities for creative synthesis using your RS Integrator.


The RS-140 is based upon a simple menu system displayed on its 2 line x 20 character LCD. The display is backlit to aid its use in darkened conditions.


•You navigate within a menu using the UP and DOWN buttons.

•You select a sub-menu by pressing SELECT.

•You return to a previous menu by pressing BACK.

•You select an option or parameter and return to the menu containing it by pressing SELECT.

•You leave an option or parameter unchanged and return to the menu containing it by pressing BACK.



The main menu (the top level of the menu hierarchy) offers access to six sub-menus that control every aspect of the RS-140's operation. Press SELECT with any of these options displayed, and the RS-140 will take you to the appropriate sub-menu structure, as follows :



With large patches, you require a number of independent controllers that affect aspects of the sound such as modulation depth, pulse width, amplifier gains... and so on. The RS-140 offers five controller outputs - CNTRL1, CNTRL2, CNTRL3, CNTRL4 and CNTRL5 - with independent sources and ranges for each. You select the Controller output to be edited using the Controllers menu (above left).

The Controller menu takes you to the Controller "n" setup menu (where "n" is a number between 1 and 5). This menu provides access to two further sub-menus that allow you to choose the MIDI Controller source and the range (in volts) of the output CV.

Analogue Systems

Custom vintage analogue synthesiser system equipment.