Speck Electronics SSM - Manual (Page 53)

Chapter 4 Operation Section
The Mono Click Return provides two means of connection; a standard
1/4" jack and a balanced transformer isolated XL input connector with
phase reverse and ground lift switches.
A standard unbalanced 1/4" T.S. jack is available for the connection of a
mono click signal or any mono audio signal that you would like returned
to the Click Return Section. The use of the unbalanced 1/4" jack does
not affect the operation of the balanced XL connector.
This standard female XL input provides balanced transformer isolation
for the Mono Click Return.
The use of the balanced XL connector does not affect the operation of
the unbalanced 1/4" connector, although it is possible that phase
cancellation may exist if the Phase Switch is enabled.
The following chart represents the proper pin configuration for the Click
XL connector.
There is always the possibility that a balanced click feed provided by,
for example, a control room to the SSM may in fact be 180 degrees out
of phase with the SSM's balanced input. This is the result of a non-
conforming pin out configuration being applied to the SSM's balanced
connector.
When the Phase Switch is in the normal position (out) the high and low
inputs of the isolation transformer are connected to pins 2 and 3
respectively. When the phase switch is depressed, pins 2 and 3 of the
XL connector are reversed, pin 3 becomes the high input and pin 2 is the
low input. The operation of the Click Phase Switch does not directly
affect the phase of the unbalanced 1/4" jacks.
When used, this switch disconnects the shields (pin 1) from the
associated balanced XL connector thereby inducing any piece of gear
interfaced at these points to search out a ground path external to the
Model SSM. This can reduce the chance of ground loops and eliminate
unwanted hums or buzzes.
The operation of the Ground Lift Switch does not affect the Click
Return's unbalanced 1/4" jacks.
PIN 1 - GROUND
PIN 2 - HIGH SIGNAL
PIN 3 - LOW SIGNAL
Mono Click
Return Section
20. Click Return Input Jacks
(Unbalanced)
21. Click Return Connector
(Balanced XL)
Click XL Pin Configuration
22. Click Return Phase Switch
23. Click Ground Lift Switch
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