NAD C 390DD User Manual

There are two options when Subwoofer is enabled - Mode and Crossover.
Subwoofer
}Mode
Crossover
MODE
Set the subwoofer mode to either mono or stereo setting.
Mode
}~Mono
`Stereo
MONO
Select this setting when using one subwoofer. At mono mode, the left and
right channels are summed in the low pass subwoofer output to drive a
single subwoofer.
STEREO
Select this setting when using two subwoofers, one for the left channel and
one for the right channel.
CROSSOVER
Crossover allows easy bi-amplication or subwoofer integration by adding
the required lters to redirect bass frequencies to the subwoofer.
Crossover
}Frequency
High Pass Trim
Low Pass Trim
Crossover Frequency
}~40Hz
`50Hz
`60Hz
Frequencies from 40Hz to 200Hz can be selected, with the high pass signal
sent to the C 390DD amplier section and the low pass signal sent to the
Subwoofer Out.
CROSSOVER FREQUENCY (40Hz, 50Hz, 60Hz ...180Hz, 190Hz, 200Hz, Full)
Frequencies from the selected frequency and below will be directed to
subwoofer output.
NOTE
Since the low pass lter is already implemented in the C 390DD, the
subwoofer should be set to the highest frequency crossover setting
available or bypassed if it also includes a crossover function.
LEVEL TRIM
Level trim allows exact volume matching of the subwoofer level to the
main speaker level.
Crossover
Frequency
}High Pass Trim
Low Pass Trim
High Pass/Level Trim
Attenuate amplitude level of high pass lter up to -12dB (range: 0dB to
-12dB).
High Pass
Level Trim 0dB
Low Pass/Level Trim
Attenuate amplitude level of low pass lter up to -12dB (range: 0dB to
-12dB).
Low Pass
Level Trim 0dB
DIGITAL SOFT CLIPPING
Soft Clipping
`On
}~Off
Enables NAD’s proprietary Soft Clipping circuitry on all channels. Soft
Clipping allows a graceful overload without the usual generation of high
order harmonic distortion that normally occurs as the sine wave gets
squared o. Now digitally controlled, it can be carefully modeled for ideal
results.
At “On” setting, Digital Soft Clipping gently limits the output of the C 390DD
to minimize audible distortion should the amplier be overdriven. Soft
Clipping may simply be left “On” at all times to reduce the likelihood of
audible distortion from excessive volume settings. Set to “O” for critical
listening and to preserve optimum dynamics.
OPERATION
USING THE C 390DD
17
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NAD C 390DD Specifications

General

Damping factor	800
Amplifier class	A
Frequency range	20 - 96000 Hz
Audio output channels	- channels
Peak power per channel	- W
Signal-to-Noise Ratio (SNR)	124 dB
Total Harmonic Distortion (THD)	0.005 %
Dynamic power per channel (4 Ohm)	350 W
Dynamic power per channel (8 Ohm)	160 W
RMS power output per channel (4 Ohm)	150 W
AC (power) in	Yes
USB 2.0 ports quantity	3
Digital audio optical in	2
Digital audio optical out	1
Speakers connectivity type	Banana connector
Purpose	Home
Product color	Black
Volume control	Rotary
Connectivity technology	Wired
Sustainability certificates	RoHS, ENERGY STAR
AC input voltage	100-240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	0.5 W
Power consumption (typical)	40 W
Certification	CE, TUV

Weight and Dimensions

Depth	388 mm
Width	435 mm
Height	132 mm
Weight	7700 g