The conversion of modules takes a little DIY skills but is typically not that hard to do. All the jacks that Doepfer uses are normalizing jacks. You look at the Gate or CV input jack and see if the normalizing leg of the tip connection on that jack is connected to anything. Often this leg is shorted to the main tip leg. If so you will have to cut that connection using a drill or xacto blade. Sometimes this means removing the jack to even be able to get to the trace on the PCB. After cutting that connection all you have to do is wire that leg to the correct pin on the bus. What I have don in the past is use a standard two pin jumper like is used on computers and other modules to program them, you know the little jumpers that go on the header pins. Some of these are designed in a way that allows a wire to be soldered onto them easily. Then all you have to do is plug it on the right pins on bus board header. You can also make a cable like the one shown on the Doepfer DIY page, section 4.1.4 on this page - http://www.doepfer.de/DIY/a100_diy.htm This cable can connect both CV and Gate if your module can use it. Most modules that don't use the CV or Gate bus will only have a 10-pin connector on the module end and a 16-pin on the bus end. This cable can replace that. If the module has a 16-pin on both ends but still doesn't connect to the CV/Gate bus (very rare) you can just wire to the unused pins on the module's connector.

The hardest part is often getting to the traces to disconnect the shorting between the switched legs and the unswitched legs. I am sure Doepfer did this to make a sturdier mounting surface for the jacks but it does make these modifications harder. Using the normalizing pins on the jacks allows the bus connection to easily be disconnected when you want to run the module from a different source while using the bus for something else.

-James


On Nov 6, 2013, at 3:36 PM, Zoë Blade < zoe@... > wrote:

> Ah, fair enough. Are plans for such mods available anywhere online I could do with giving my A-142 bus-based gate in... (At least, I'm assuming it doesn't have it. The Molex connector my partner hooked up doesn't currently support CV/gate either, heh... And I thought my synth was nearly finished...)
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