NAD C 372 User manual

• 2 x 150W Minimum Continuous Power into 4/8 ohms
• 220W, 340W, 460W IHF Dynamic Power into 8, 4 and 2
ohms, respectively
• PowerDrive™
• High Current Holmgren™ Toroidal Power Transformer
• Bridgeable to 300W Mono (8 ohms)
• A/B Speaker outputs with remote switching
• 7 Line Inputs, including Two Tape In/Outs
• Main-amp input & 2 pre-amp outputs
• Bass and Treble Controls with Tone Defeat Switch
• Relay Input Switching
• All Discrete Circuitry
• Gold plated RCA Connectors
• Short signal path from input to output
• NAD Soft Clipping™
• Headphone socket
• IEC Detachable Power Cable
• 12V Trigger Output
• IR Input/Output
• NAD SR-5 Full System Remote Control
Features:
Features:
The C 372 is fully remote controlled and comes supplied
with the all-new NAD SR-5 system remote control. The
remote control features an ergonomic form, with large
buttons that are differentiated by shape and position, to
make operation intuitive and enjoyable. The SR-5 will also
operate many other NAD products such as CD players,
tuners, etc.
Flexibility is another NAD strong point. The C 372 has
7 line inputs (including 2 tape in/outputs with dubbing
facility) and the pre-ampli er section can be separated from
the power ampli er for easy upgrades or adding ancillary
equipment. Thus the C 372 can be expanded to meet future
system needs. The C 372 sports 2 pre-amp outputs: Many
systems bene t from the use of multiple power ampli ers
for “Bi-Amping” (using separate power ampli ers to drive
the bass and treble section of a loudspeaker). With the
second Preout 2 facility an extra power ampli er, such as
NAD’s C 272, is easily connected. There is an adjustable
gain setting for this second Preout 2, allowing virtually any
ampli er to work with the C 372. This output can also be
used to connect a powered subwoofer, an increasingly
popular option.
For remote on/off switching of ancillary components in a
system, such as power ampli ers or active speakers, the
C 372 is equipped with a 12V trigger system. When
switching the ampli er on, the 12V trigger output is also
activated which in turn can activate a 12V trigger input and
switch on the remote devices. Besides the 12V trigger,
the C 372 also has an AC switched outlet (North American
version only) so you can easily switch your entire system
on or off with the remote control or from the front panel.
It is fashionable to omit tone controls nowadays, however,
provided that the tone controls are properly designed, they
can be really useful tools in making improvements to the
overall sound. The C 372 tone controls only work at the
frequency extremes leaving the critical mid-band essentially
unaltered. The tone control circuits can be completely
bypassed by using the tone defeat switch. The C 372 also
incorporates NAD’s acclaimed switchable “Soft Clipping”
circuit, which signi cantly reduces the risk of damage to
loudspeakers due to prolonged high power operation.
C 372 Stereo Integrated Ampli er
The C 372 is the latest in NAD’s range of
affordably priced, yet very high performance
Integrated Ampli ers. Building on the strengths
of our highly acclaimed C 370 (Winner of the
2002 EISA Award for Ampli er of the year,
Stereophile Recommended Component, What
Hi-Fi Five Star rated, and many others), the
C 372 boasts many upgrades and re nements.
Immediately noticeable is the new cosmetic
appearance along with the improved
SR-5 remote control handset. Inside, we’ve
upgraded the Pure Class A preamp and
driver stage modules using the latest high
performance semi-conductors. The power
supply has also received a complete upgrade,
with the larger custom wound toroidal
transformer and 105C smoothing capacitors
contributing to a 20% increase in output power,
to 150 watts continuous. An improved tone
control circuit and revised PCB layout has
reduced distortion and noise to unprecedented
levels. Taken together, these improvements
mark a sharp upturn in performance that simply
must be heard, to be fully appreciated!

Design: PowerDrive
The C 372 also bene ts from NAD’s proprietary PowerDrive circuit
topology, now well established and used throughout the NAD
product range notably, in the highly reviewed models such as the
C 320BEE and C 370. The PowerDrive topology allows the
C 372 to deliver maximum performance under virtually any
circumstance, independent of the loudspeakers it is driving. The
circuitry automatically senses the impedance characteristics of the
loudspeaker and will then adjust its power supply settings to best
cope with that speci c load. PowerDrive topology is a practical
approach to enable an ampli er to easily deal with musical dynamics
and dif cult speaker loads. Thus we have the highly desirable
characteristics of high dynamic power and low impedance drive
capability in one affordable package.
NAD also takes a stand against the meaningless “brochure power”
touted by many of our competitors by offering Full Disclosure
power specs. We specify minimum continuous power, across the
entire audible range of frequencies, at rated distortion, for both 8
and 4 ohms with all channels driven simultaneously. Perhaps even
more importantly, we also specify Dynamic Power at 8, 4, and even
2 ohms, which better describes the way the ampli er will perform in
the real world, with musical signals and reactive loudspeaker loads.
But even the most carefully reported specs cannot fully describe the
sonic performance of an ampli er. Only your own ears can  nally
judge our achievement. We urge you to listen and compare NAD to
other products in its price range, and even higher. We don’t think
you’ll  nd anything that comes close to offering the C 372’s overall
musical satisfaction, well-rounded performance, and stellar value
for money.
Pre-Amp Section
Line level inputs
Input impedance (R+C)
Input sensitivity, rated power
Frequency response (-3dB - 70kHz)*
Line level outputs
Output impedance
Tape
Phones
Signal/noise ratio
Remote Control
Power Amp Section
Continuous output power into 4/8Ω †
Rated Distortion (THD 20Hz - 20kHz)
Clipping power ‡
IHF dynamic headroom at 8Ω
IHF dynamic power at 8Ω
IHF dynamic power at 4Ω
IHF dynamic power at 2Ω
50kΩ / 320pF
350mV
+/-0.3dB
100Ω
Source Z + 1kΩ
220Ω
>106dB
Yes
2 x 150W (21.76dBW)
0.02%
180W (22.55dbW)
3dB
220W (23.42dBW)
340W (25.31dBW)
460W (26.62dBW)
Damping factor (ref. 8Ω, 50Hz)
Input impedance
Input Sensitivity (for rated power into 8Ω)
Voltage gain
Frequency response; 20Hz-20kHz
-3dB at:
Signal/noise ratio; ref 1W
Signal/noise ratio; ref rated power
Bridged Mode
Continuous average power input into 8Ω †
IHF dynamic headroom at 8Ω
IHF dynamic power at 8Ω
IHF dynamic power at 4Ω
Physical Specifications
Dimensions (W x H x D)
Net Weight
Shipping Weight
>150
20kΩ/ 470pF
770 mV
29dB
+/-0.3dB
-3dB
>100dB
>120dB
300W (24.8dBW)
2.2dB
780W (27dBW)
1132W (28.5dBW)
17 1/8 x 5 1/4 x 13 13/16”
(435 x 132 x 350mm)
26.45 lbs (12kg)
31.65 lbs (14.36kg)
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