Classe Audio Delta PRE Owner's Manual page 17

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 Delta PRE rear panel.
Important!
Verify that the power amplifier(s) is plugged in but powered
OFF before connecting to the Delta PRE!
We recommend using high quality cables with XLR connectors.
Connect the Main L&R Outputs, either RCA or XLR, from the rear panel of
the Delta PRE to the corresponding inputs on your amplifier(s).
• If you are using a subwoofer, connect the Delta PRE subwoofer
output to the input of the designated amplifier or powered
subwoofer.
NOTE: In the Delta PRE default settings, fourteen rear panel
inputs 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 Delta
PRE. 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
NOTE: Make sure connections from the subwoofer output go only to an
amplifier connected to a subwoofer or a powered subwoofer, as low frequency
signals can damage a small speaker not designed for high output bass
reproduction.
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