I do have a cable Rolf Spuler gave me to use with Roland equipment – on one side the Neutrik connector, on the other end the Roland 13-pin connector.
Using my Avalon with the Polysubbass and the Polysubbass connected with this cable to a Roland GR-55 guitar synth I am able to get the amp simulations and effects of the GR-55.
However, connecting a Frameworks guitar and the Polysubbass with this cable doesn’t work. Is it possible to use the Polysubbass with a Frameworks guitar or another guitar equipped with the Roland 13pin socket?
this is an interesting idea it does not work now because of the supply: – the original DIN13-Neutrik cable you mention contains no supply wire ( http://www.matthiasgrob.org/pEE/ppSchema/PaGRcabl.htm ) – I use my Elegy with StringPort with a cable that has a diode in it to make sure that no one sends the 12V from the Polysubbass to some Roland equipment (which probably would not survive) – it should be possible with a special split cable to feed a GR guitar from the Roland synth and connect the Polysubbass in parallel
but: the Roland has a lower signal level than the Paradis, so the Polysubbass may cut the end of the bass note
but: I just talked to Tom about creating a Polybass module that works with the Roland standard. its rather easy but not easy enough to modify the old ones.