Drawmer Six-Pack Multi-Ch. Dynamics - Manual (Page 5)

SIX-PACK” OPERATORS’ MANUAL 3
AUDIO CONNECTIONS
Both the input and output connectors may be used either balanced or unbalanced,
the wiring convention for XLR connectors being: pin 2 hot, pin 3 cold and pin 1
ground. Unbalanced operation is achieved by shorting pin 3 of the XLR connector
to ground (pin 1) at both input and output.
Interference: If the unit is to be used where it maybe exposed to high levels
of disturbance such as found close to a TV or radio transmitter,
we advise that the unit is operated in a balanced configuration.
The screens of the signal cables should be connected to the
chassis connection on the XLR connector as opposed to
connecting to pin1. The “Six-Pack” conforms to the EMC
standards.
Ground Loops: If ground loop problems are encountered, never disconnect the
mains earth, but instead, try disconnecting the signal screen on
one end of each of the cables connecting the outputs of the Six-
Pack to the patchbay. If such measures are necessary, balanced
operation is recommended.