Operation Manual

SINGLE‑ENDED/BALANCED
Single-ended
}~Enable
`Disable
Balanced
}~Enable
`Disable
There are two options when Single-ended or Balanced input is enabled -
Level Trim and Sample Rate.
NOTE
The optional NAD DD AP-1 (Direct Digital Analog Phono) module must
be installed for “Single-ended” and “Balanced” sources to be functional.
Otherwise, aforementioned sources will not be available from the
Source Setup menu selection.
LEVEL TRIM
Adjust the input signal level from -9dB to 0dB or Fixed.
Single-ended
}Level Trim
Sample Rate
Single-ended
Level Trim 0dB
Balanced
}Level Trim
Sample Rate
Balanced
Level Trim 0dB
-9dB to 0dB: Increase or decrease the input signal level from -9dB
to 0dB. This attenuates the signal before the Analog-to-Digital (A/D)
Converter. If the analog input signal sounds “congested” or distorted,
the input should be attenuated.
Fixed: This setting should be selected when the C 390DD is connected
to the output of a preamplier and is used primarily as a power
amplier. Output level is xed and the C 390DD’s Volume Control is
bypassed. This feature is sometimes referred to as “Cinema Bypass”
because it allows the C 390DD to be used for the front channels of a
surround sound system by relegating the volume control function to
the surround processor.
IMPORTANT NOTICE
If LEVEL TRIM will be set to FIXED level, adjust rst to MINIMUM level the
volume control of the amplier where the C390DD is connected. This
will prevent the amplier from starting at a high volume level when the
amplier is set to the Source input where the C390DD is connected.
SAMPLE RATE 48 KHZ, 96 KHZ, 192 KHZ
Select the user’s preference for sample rate of the A/D Converter. Higher
sampling rates allow for anti-aliasing lters to take eect further outside
the audible frequency range and are generally considered to sound better,
especially in the high frequencies.
Single-ended
Level Trim
}Sample Rate
Single-ended
Sample rate 48Hz
Balanced
Level Trim
}Sample Rate
Balanced
Sample rate 48Hz
OPERATION
USING THE C 390DD
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