On Wednesday, July 1, 2015, Florian Anwander fanwander@... 1 < Doepfer_a100@yahoogroups.com > wrote:

 

Do you use original Doepfer patch cables

This sounds like a missing ground connection between the two racks
(which is normal!). In this case the patchcable has to provide a proper
ground connection. Using cables with stereo-mini-jacks will not work!
You must use cables with mono jacks on both sides.

Florian