Classe Audio Sigma SSP Owner's Manual page 23

Step 3
Connect source components to the SSP rear panel.
If necessary, refer to the Rear Panel section in this manual for a detailed
description of each connector found on the rear panel. Your local Classé dealer
can also provide useful suggestions for what source components you should add
to your system and guidance in setting them up.
Make sure you keep a detailed record of the rear panel
connectors that you used while connecting the source
components!
You'll need to know what connector(s) each source is attached to when you enter
the setup menus. An Installation Worksheet is included at the end of this manual
to assist you.
Step 4
Connect the power amplifier(s) to the Sigma SSP rear panel.
Important!
Verify that the power amplifier(s) is plugged in but powered
OFF before connecting to the SSP!
For the Front Left and Right channels, we recommend using high quality cables
with XLR connectors.
NOTE: In the Sigma SSP default settings, eighteen input
connectors are associated with corresponding source selections
within the Source Setup menu. Since most users will have fewer
sources connected, the Source Selection page(s) can be simplified by
unchecking the Enable Source box for each unused input. Doing so
removes the corresponding Source button from the Source Selection
page. See the Menu System section for details.
NOTE: These pin assignments are consistent with the standards
adopted by the Audio Engineering Society. Refer to the operating
manuals of your balanced-input power amplifiers to verify that the
pin assignments of their input connectors correspond to the Sigma-
SSP. If you are using Classé amplifiers, this note does not apply.
If needed, the pin assignments of the XLR-type male output
connectors are:
Pin 1: Signal ground
Pin 2: Signal + (non-inverting)
Pin 3: Signal – (inverting)
Connector ground lug: chassis ground
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