NAD Electronics T743 User manual

NAD Electronics T743 User manual
T 743 A/V Receiver
•5 x 50W Simultaneous Minimum Continuous Power
into 4 / 8 ohms
•105W, 145W, 165W IHF Dynamic Power into 8, 4
and 2 ohms, respectively
•Dolby Digital, DTS, ProLogic II, EARS and
Enhanced Stereo
•5 A/V Custom Presets store unique speaker level and
tone control settings
•Direct access speaker level adjustment for surround,
center and subwoofer
• Stereo Bypass
•NAD Soft Clipping ™
•6 A/V Inputs, 3 with S-Video, 2 Full Tape Loops
• Component Video, 2 Inputs and 1 Output, HDTV
Compatible
•2 Audio Inputs, 1 Tape Output
•6 Digital Inputs, 4 Coaxial, 2 TOS Link
freely assignable
•5.1 Analogue Input (for DVD-Audio)
•Speaker A + B switching (Speakers B stereo only)
•2 x IR Outputs, IR Input
•2 x 12V Trigger Outputs, 12V Trigger Input
•Preamp Outputs for all 5.1 channels (2 Subwoofers)
•Amplifier Input for 3 amplifier channels
•RDS FM/AM Tuner with 30 direct access presets
•HTR-2 - 8 Device Illuminated Learning Remote with
Macro function
The NAD T 743 is heir to many generations of award
winning NAD designs. This exceptional pedigree is
evident in both the look and the feel of the T 743, and
it is unmistakable the moment you listen. Based on the
highly successful T 742, the T 743 boasts improvements
in virtually every area of the receiver, for a cumulative
effect that is fully deserving of the new model number.
Starting with a revised heat management system that
reduces internal operating temperatures even under the
most severe operating conditions, the T 743 includes a
new volume control circuit and input switching circuit that
further reduces noise and distortion. In addition, we have
increased the number of digital inputs and added speaker
switching for a second pair of stereo speakers. Also new
are the On-Screen Display, HDTV Component Video
Switching, and an illuminated learning remote, the NAD
HTR-2.
Performance
Today’s advanced surround sound receivers require
quality in both the digital decoding stages and the
analogue amplifying stages for the best overall
performance. The T 743 is an excellent example of the
NAD Design Team’s expertise in both areas.
Using the latest high speed DSP technology, NAD
was able to include the newest surround formats from
Dolby and DTS, as well as including NAD’s own highly
regarded music surround mode, the EARS (Enhanced
Ambient Recovery Circuit) circuit. Unlike, the typical
artificially enhanced DSP modes like “Club”, “Stadium”,
and “Church”, EARS uses DSP technology to extract the
natural ambience to create surround sound from any 2
channel source inducing a warm natural reverberant effect
without the artificial “BOING”. Surround processing is
automatically detected via the digital inputs of the T 743,
and the “highest” or most advanced form of decoding is
switched in. Conversion of the decoded digital bitstream
is performed with high resolution and extremely linear D/A
Converters carefully selected for their performance capabilities.
NAD’s reputation for producing power amplifiers that are both
potent and musical is upheld in fine manner with the T 743.
Boasting a minimum of 50 watts continuous power per channel,
the T 743 can fill even large rooms to lifelike sound levels. With
NAD’s typical attention to detail in the all important power supply
design, the T 743 can easily meet its power spec with all channels
operating simultaneously even demanding 4 ohm designs. Many
less advanced receivers resort to performance robbing protection
resistors to allow the use of 4 ohm speakers.
Credit for the sound of NAD’s components rests squarely with our
unique design approach and our experienced and very talented
design team. Most companies design their products to a technical
specification and a price point. While this sounds logical enough,
it does not address the way the product will actually be used by
the eventual owner. You don’t listen to specifications, you listen to
music and sound. While NAD products exhibit excellent technical
measurements, we have relied on our own ears and listening
experience to determine the final design of our products. Because
of our unique design approach, NAD’s sound is simply more “real”
sounding, adding enjoyment and excitement to your favorite films
and music recordings.
Flexibility
The T 743 has all the flexibility required to serve as the command
center for a sophisticated Home Theatre systems. A full suite of
video switching caters to all the popular video formats (Component
Video, S-Video, and Composite Video). Digital inputs are available
in both coaxial and optical formats to make it easy to attach all your
digital sources for playback and recording.
With the T 743, NAD has made it easy to add more speakers for
listening to music in additional rooms. A second pair of speakers
can simply be added to the front channel amplifiers and switched
on or off from the remote control or front panel switch. There are
also 12V triggers to automatically switch similarly equipped source
components on and off. Thoughtful features like discrete On and
Off codes, direct access to inputs and FM station presets facilitates
the integration of the T 743 into elaborate remote control systems.
Preamp outputs and main amp inputs, a long standing NAD feature,
allow the addition of more powerful amplifier channels and/or the
reconfiguring of amplifier channels. (for example, adding a more
powerful external amplifier to the front channels.)
Luxurious Simplicity
All the capability and flexibility in the world is quite useless if the
receiver becomes too complicated to be operated by every member
of the family. NAD has taken special measures to make the
operation of the T 743 as logical and straightforward as possible.
Initial system setup is best accomplished using your television
monitor and the clear and simple On Screen Display (OSD),
which can be configured to also give status updates as settings
are changed in everyday use. Once the T 743 is informed of your
specific system set-up, all settings are stored in a non-volatile
memory making this a one time task. The front panel display
indicates complete information about the source being listened to
or watched including selected surround mode and volume setting.
The FM tuner includes 30 favourite station presets that can be
custom named, or if the station supports the Radio Data System
(RDS), it will automatically stream information about the station and
music being played.
Five independent “A/V Presets” can store speaker level and tone
control settings for instant recall, making it easy to custom tailor
your system for different types of program material. Encoded
surround modes like Dolby Digital and DTS are automatically
selected if the program is so encoded. The T 743 also remembers
your last used settings when switched in and out of Standby mode.
The included HTR-2 remote handset is a model type that is
replacing the typical remotes found for TVs, VCR’s DVD players
etc... . It has illuminated buttons for easy operation in low light
environments. Remote commands for products not already
included in the HTR-2’s memory can be easily “taught” to the
HTR-2. And the HTR-2’s Macro function allows up to eight
individual commands to be triggered by the pressing of just two
keys. With this feature, all of the commands required for watching
a DVD, for example, are executed automatically by the HTR-2’s
Macro function.
Summary
The T 743 offers remarkable performance and flexibility in a
compact and simple to operate package. This multi-channel
powerhouse will bring your favourite music and movies to life in
your home entertainment room with an absolute minimum of fuss
and a maximum of pure enjoyment.
Amplifier Section
Power output Stereo Mode
(8Ω within rated distortion)
70W (18.45dBW)
IHF dynamic power; 8Ω
105W (20.2dBW)
IHF dynamic power; 4Ω
IHF dynamic power; 2Ω
Simultaneous power output surround mode
145W (21.6dBW)
165W (22.1dBW)
5 x 50W (16.98dBW)
Total harmonic distortion at rated power
0.08%
IM distortion at rated power
0.08%
Damping factor 8Ω
Input sensitivity and impedance
Frequency response
60
400mv / 50kΩ
5 to 20,000 Hz
Signal/noise ratio; ref rated power 8Ω
>96dB
Signal/noise ratio; ref 1W / 8Ω
>80dB
Remote Control
±0.8dB
Yes
Tuner Section
Input sensitivity Mono
16.1dBf
50dB Stereo:
36.1dBf
Harmonic Distortion; FM Mono
0.25%
Harmonic Distortion; FM Stereo
0.5%
Signal/noise; Mono
72dB
Signal/noise; Stereo
66dB
Stereo separation at 1kHz
Frequency response; + 1.5dB
40dB
30Hz - 15kHz
Video Section
Input and output impedance
75Ω
Component Video Bandwidth
50MHz
Physical Specifications
Dimensions (W x H x D)
17 1/8 x 5 3/16 x 13 3/4”
(435 x 132 x 350mm)
Net Weight
36 lbs (16.35kg)
Shipping Weight
39 lbs (18.15kg)
NAD Electronics International reserves the right to change specifications or features without notice. NAD is a registered trademark of NAD Electronics
International. All rights reserved. No part of this publication may be reproduced, stored, or transmitted in any form whatsoever without the written
permission of NAD Electronics International. © 10/03 NAD Electronics International.
www.NADelectronics.com
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