Speck Electronics SSM - Manual (Page 52)

Chapter 4 Operation Section
The Stereo Cue Return provides two means of connection. Two
unbalanced 1/4" T.S. jacks and a XL transformer isolated input
connector with phase reverse and ground lift switches.
These standard unbalanced 1/4" T.S. jacks are available for the
connection of a stereo cue signal or any stereo audio signal. The use of
the unbalanced 1/4" jacks does not affect the operation of the balanced
XL connector.
This XL input connector provides transformer isolation for the Stereo
Cue Return. This connector may be used for interface to an external
consoles cue feed.
The use of the balanced XL connector does not affect the operation of
the unbalanced 1/4" jacks, although it is possible that phase cancellation
may exist if the Phase Switch is enabled.
Do not connect the speaker terminals of any power amplifier directly
into the Cue Return input connectors.
The following chart represents the proper pin configuration for the Cue
XL connector.
There is always the possibility that a balanced cue 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.
The operation of the Cue 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 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 Cue
Return's unbalanced 1/4" jacks.
PIN 1 - GROUND
PIN 2 - LEFT SIGNAL
PIN 3 - RIGHT SIGNAL
Refer to Figure 10 for location of items 16 thru 26.
Stereo Cue
Return Section
16. Cue Return Input Jacks
(Unbalanced)
17. Cue Return Connector
(Transformer Isolated XL)
Cue XL Pin Configuration
19. Cue Ground Lift Switch
18. Cue Return Phase Switch
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