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Performance
The NAD engineers concentrated only on the truly important parts
of a surround sound system. As the new Surround Sound formats
allow for the same wide bandwidth and large dynamic range for
the rear channels as for the front channels, all fi ve channels are
capable of putting out an equal and substantial amount of power.
As usual with NAD, the L73 uses discrete output stages only,
including the surround channels. The benefi ts of this approach
have been proven over the years in many acclaimed NAD amplifi ers
and receivers. Most products in this category are using digital
IC amplifi er modules, which allow for a very slim-line design, but
cannot meet even the most basic hi-fi specs for noise and distortion.
Whats more, these amplifi ers can only put out a very modest
amount of power, far too little for a satisfying cinematic or musical
performance. And to make matters even worse, these digital IC
amplifi ers used by our competitors cannot drive real world speakers
due to their poor tolerance of low impedance, and almost total lack
of dynamic power.
As one would expect from NAD, only high quality components
have been used, such as high resolution ADCs (Analogue-to-
Digital Converter) and DACs (Digital-to-Analogue Converter)
from renowned manufacturer Crystal to obtain the best possible
performance.
FLEXIBILITY
Even though the L73 DVD Surround Sound Receiver may be
far more compact than a separate DVD Player and Receiver of
comparable performance, it still is very fl exible. Three additional
video sources (one front panel accessible - perfect for cameras and
game consoles) and a 6 channel audio source can be connected
(with the built-in tuner and DVD/CD player that potentially gives
you access to six sources) of which two also offer S-Video inputs
and one a Component Video input. Besides the Monitor output,
the L73 also has an S-Video and Composite output as well. Two
digital inputs (one optical, one coaxial) are provided, and, for easy
transferring to a CD recorder or other digital recording device, the
L73 also sports an optical digital output. Rather than using spring
clips for loudspeaker cable connection, as usually found on compact
systems, the L73 offers high quality loudspeaker binding posts,
more associated with top-of-the-range full-size AV receivers. A line-
level output for connection to a powered subwoofer is provided as
well.
ADVANCED FEATURES
The L73 will automatically recognise DTS or Dolby Digital and will
switch accordingly. Also included is the new high resolution DVD-
Audio mode with up 24 bit 96 kHz resolution (CD is only 16 bit 44.1
kHz) with full bass management available. Besides these modes,
Stereo Enhanced (all channel stereo), ProLogic II, and EARS (an
NAD exclusive) are available, all aimed at reproducing 2 channel
stereo music in a realistic 5.1 surround mode, creating either a
natural ambience, or an all out party sound. In all cases the sound
is pure and undistorted, as opposed to those fuzzy boingy sound
effects with lofty sounding names like stadium and cathedral.
DVD AND CD FEATURES AND PERFORMANCE
Besides superb DVD picture quality in either interlaced or
progressive modes, the NAD L73 also offers a wide range of
facilities such as Multi-Angle*; Multi-Sound*; Multi-Subtitle*;
Frame; Zoom and Repeat. All these facilities can be easily accessed
with the supplied remote control. Through the extensive yet
intuitive On-Screen-Display you can change the various settings
and parameters for optimum performance.
POWER
© NAD 2004 L73
AC OUTLETSWITCHED1A 100WATTS MAX.
ANTENNA
FM
GNDAM
L L R R
Serial No./
No. De Series
SURROUND
CAUTION : SPEAKER IMPEDANCE
FRONT : 8 OHM MIN./SPEAKER CENTER : 8 OHM MIN./SPEAKER
SURROUND : 8 OHM MIN./SPEAKER
CENTER FRONT
SPEAKERS
CAB/SAT
IN
AUDIO
S-VIDEO
VIDEO
L
R
Y
Cr/
Pr
Cb/
Pb
Y
Cb/Pb
Cr/ Pr
COMPONENT VIDEO
CAB/SAT IN OUT
CENTER
SURROUND
VCR
IN MONITOROUT OUTOUTOUT
OUT OUT
FRONT
5.1 CHANNEL INPUT SUBW DIGITAL AUDIO
IN COAXIAL OPTICALOPTICAL OUT IN +12V
TRIGGER OUT SUBW
PRE-OUT
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Amplifi er Section
Power output Stereo Mode
Simultaneous Continuous Output Power into 8 ohms
IHF dynamic power; 8 ohms
Total harmonic distortion at rated power
Damping factor 8 ohms
Frequency response
Frequency response
Signal/noise ratio; ref. rated power / 8 ohms
Signal/noise ratio; ref 1W / 8 ohms
Remote Control
FM Tuner Section
50dB Quieting Sensitivity; FM Mono
50dB Quieting Sensitivity; FM Stereo
Image Rejection
Harmonic Distortion; FM Mono
Harmonic Distortion; FM Stereo
Signal/noise; Mono
Signal/noise; Stereo
Channel Separation at 1kHz
Frequency response; ±1.5dB
AM Tuner Section
Usable Sensitivity
Selectivity
Image Rejection
IF Rejection
Signal/Noise Ratio
Harmonic Distortion
Audio
Frequency Response DVD Audio
Frequency Response CD Audio
Signal to noise ratio, A-weighted
THD (at 0dB, 1kHz)
Wow and Flutter
Channel separation CD
Dynamic range
DVD Video
Signal to Noise
Signal system
Inputs
Digital coaxial - PCM, DTS, AC3
Digital optical - PCM, DTS, AC3
Component Video
Outputs
Digital optical - PCM, DTS, AC3
Composite Video
S-Video
Component Video
12V Trigger
Physical Specifi cations
Dimensions (W x H x D)*
Net Weight
Shipping Weight
2 x 60W (18dBW)
5 x 45W (16.53dBW)
2 x 82W (19dBW)
0.08%
>60
20Hz to 20kHz ±0.5dB
-3dB 10Hz to 60kHz
99dB
85dB
NAD HTR L73
-16 dBf
-36.1 dBf
>50dB
0.2%
0.5%
69 dB
64.2dB
40dB
30Hz - 15kHz
55dBu
25dB
35dB
50dB
55dB
0.8%
48kHz sampling 10Hz - 22kHz
96kHz sampling 4Hz - 44kHz
10Hz -22kHz
>85dB
T0.008%
Quartz accuracy
86dB
103dB
62dB
PAL/NTSC
RCA x 1
TOS Link x
1
RCA x 3
TOS Link x 1
RCA x 1
Y/C 4 pin x 2
Yes
RCA x 3
Yes
17 1/8 x 4 3/4 x 13
(435 x 121 x 330 mm)
26 lbs (11.8 kg)
32 lbs (14.5 kg)
* Dimensions are of units cabinets without feet attached; add up to
18mm for total height. Dimension depth excludes terminals, sockets,
controls and buttons.
