Neumann KM54/KM56 6 Pin Wiring

[rdraudio]

Hi,
I have a question about the wiring of the 6 pin connector on the Neumann KM54 & KM56 mics.  I have the wiring as :

Pin 1 - Audio +
Pin 2 - 4V Filament
Pin 3 - Ground
Pin 4 - 120V Plate
Pin 5 - Audio -
Pin 6 - Calibration

Do you tie Pin 6 to Pin 3 Ground, or to Pin 5 Audio - ?

Thanks.

 

[moamps]

You can connect the pin 6 to the pin 3 or left it unconnected.