Doepfer

Hi Richard

>>The ground connection is required for the passive module. But it could 
>>be done also via the connection of the active module (This was not 
>>described in Dieters instruction).
> This ground connection is common to the front panel too ?
No, the frontpanel is not intended to be used as ground connection 
(though it is connected to ground usually). You should not rely on.


Florian


BTW: In theory the housing of audio equipment should be separated 
completely from the electrical audio ground.