> Hi im new to the group, i work in repairing vintage synths and
> i've just taken the plunge into the a100 system. Very exciting.
> Anyway i've ordered the a-111-5 synthesiser module and was
> looking through the manual and came across this (taken from page 4)
>
> ..
> From the factory the socket labelled "LFO1" outputs the
> inverted LFO1 signal. But as the module has several
> internal pin headers available even another signal may
> appear at this socket by changing the internal module
> patch. These six pin headers are available: LFO1
> output, LFO2 output, ADSR output, inverter input,
> inverter output, output socket. The internal default
> patch is LFO1 -> inverter input, inverter output ->
> output socket (i.e. socket = inverted LFO1). But even
> another signal can be patched to this socket (e.g.
> inverted ADSR, non-inverted LFO1, inverted or non-
> inverted LFO2). It is also possible to add a blind panel
> next to the A-111-5 with a couple of sockets that are
> connected to the corresponding pins of the A-111-5 pc
> board. The in- and outputs of the VCO, VCF and VCA
> are not available as pin headers because the VCO,
> VCF and VCA are internally connected in the circuit
> which is used in this module.
> ..
>
> im very interested in making a blind panel with extra sockets,
> but i'd like some clarification on the connections. They appear
> to be single pin, would one wire one of those pins to tip and the
> sleeve to ground Any help or suggestions would be very much appreciated.
>
> Paul

As long as you patch within the A-100 only it would be sufficient to wire
only the tip of the sockets. But as soon as you want to patch to another
system (or even a second A-100 system in another case) the GND is required.
To be on the safe side I'd connect the GND to each socket too.

The functions of the pin headers are described in the A-111-5 user's manual
(appendix).

Best wishes
Dieter Doepfer