T 775 A/V Surround Sound Receiver

T 775 A/V Surround Sound Receiver
T 775 A/V Surround Sound Receiver
7 x 100W Simultaneous Full Disclosure Power
7 x 165W Minimum Continuous Power (FTC)
PowerDrive™ amplifier technology
Holmgren™ Toroidal Power Supply
Modular construction for simple upgrade and service
Audyssey Auto Setup and Calibration of all speaker settings
using supplied microphone
Audyssey MultEQ XT Room Correction with custom NAD
developed target response curves
Data Port for use with optional NAD iPod Dock
Dolby Digital, Dolby Digital EX, ProLogic II, ProLogic IIx, DTS,
DTS ES, DTS 24/96, DTS NEO:6, EARS and Stereo Enhanced
Surround Modes
5 A/V Custom Presets store unique listening modes, DSP
options, tone, speaker and display settings
Direct speaker level adjustment for surround, center and sub
NAD Soft Clipping™
Burr-Brown 24 bit 96kHz A/D converter
Burr-Brown 24 bit 192kHz Stereo D/A converters (x5)
Texas Instruments Aureus™ 7.1 high speed DSP (32 bit dual
core floating point design)
4 v1.3 1080p HDMI Digital Audio/Video Inputs
HDMI 1080p bandwidth with full On-Screen Display (OSD)
Cross Conversion of all analog video formats
Analog video to HDMI Conversion
7 Analog Stereo Audio Inputs (1 front panel)
Media Player MP front panel input
• 6 Analog Video Inputs, all S-Video and Composite (1 front panel),
3 Component Video, HDTV Compatible
• 7 Digital Audio Inputs, 3 Coax and 4 Optical (1 front panel)
• 3 Analog Stereo Audio Outputs, 2 assignable as Tape Out, or
as Zone 3 and Zone 4 Outputs with independent source and
volume control
• Back Surround Amplifier Channels can be reassigned as Zone
2, 3, or 4, or front Bi-Amp
• 4 Video Monitor Outputs, HDMI, Component, S-Video and
Composite formats
• 3 Analog Video Outputs, 2 Tape (Composite and S-Video) and 1
Zone (Composite)
• 2 Digital Outputs, 1 Coaxial, 1 TOSLINK
• 7.1 Analog Input (for DVD Audio/SACD/ETC.)
• Speaker A + B switching (Speakers B stereo only)
• Zone 2 A/V Line Level Output with independent source and
volume selection
• Digital Inputs available as 2 channel analog mixdown on Zone 2
• ZR-4 Second Zone Remote included with discrete codes for
independent zone
• 3 x IR Outputs, 1 x IR Input
• RS-232 port interface for advanced control systems
• 3 x 12V Output Triggers, 1 x 12V input
• Preamp Outputs for all 7.2 channels (2 Subwoofers)
• RDS FM/AM Tuner with 30 direct access presets
• XM Ready – XM subscription and optional XM module required
• HTR-3 Illuminated Learning Remote Control
The NAD T775 is heir to many generations of award winning NAD designs. This exceptional pedigree is
evident in both the look and the feel of the T775, and it is unmistakable the moment you listen. It is NAD’s
insistence on creating products with remarkable sound quality at sensible prices that has made NAD the
first choice among the most knowledgeable listeners from around the world. NAD’s “Music First” philosophy
dictates that we endow our Surround Sound products with the same warm involving sound quality that
makes music listening so rewarding with our stereo components. This stands in stark contrast to our
competitors who view Surround Sound components primarily from a “content” point of view, with sound
quality far down the list of priorities. Yet the T775 is second to none in terms of flexibility and up-to-the-minute
digital technology.
Full Disclosure Power Ratings
Inflated power specifications have been used to “sell” receivers as
long as there have been receivers to sell. But not at NAD. Instead,
we encourage our customers take a clear-eyed look at the real
Receivers don’t make music and filmsound by driving laboratory
test-loads, they do it by driving loudspeakers. And loudspeakers,
whether labeled 8Ω or 4Ω in “nominal impedance,” are far more
challenging. A speaker that “looks like” an 8Ω resistor at some
frequencies will show 4Ω at others, and often, 3Ω or even 2Ω at
still others. Furthermore, actual loudspeaker loads are far more
complex than simple test resistors. What does all this mean?
Simply, that power on paper is but a poor predictor of “how loud,”
“how dynamic,” “how musical.”
Nevertheless, in a competitive market comparisons will be made.
But when you make them, read the fine print—all of it. At NAD
we test under the most demanding, “worst-case” conditions,
reporting the minimum power output we achieve at any frequency
within human audibility (full audible bandwidth of 20Hz-20kHz),
and with all channels driven and fully stressed simultaneously at
clearly specified, vanishingly low distortion. Many competitors do
not: they often quote single-frequency power (1 kHz) reflecting at
most one “associated channel” (maximum 2 channels) dominating
the receiver’s power supply—often under a variety of deceptive
power headings. And if distortion is stated at all it’s usually at quite
high levels: 0.5 percent, 1 percent—in one case, 10 percent!—it’s
easy to print big numbers that simply do not tell the true story. The
bottom line: don’t be fooled by specs; let your ears be the judge.
This keystone of the NAD receivers’ amp-section design underpins
the unique dynamic potential of every model. PowerDrive’s
foundation is a “dual-rail” power supply that delivers optimized
internal voltage levels especially during the most demanding
conditions: dynamic peaks, big musical transients, deep-bass
excursions that drive a loudspeaker into its most power-hungry
impedance range. It’s a little like the “kickdown” of a sophisticated
automatic transmission - providing distortion-free current on
PowerDrive is one big reason why NAD AV receivers do not exhibit
the dynamic compression, flattened imaging, and even tinges of
harshness audiophiles so often decry as “receiver sound.” And
PowerDrive not only makes NAD receivers sound better, it makes
them cooler running, more efficient, and more reliable as well.
Today’s advanced Surround Sound receivers require quality in
the digital decoding stages, the video processing section, and
in the power amplifier design for the best overall performance.
The T775 is an excellent example of the NAD Design Team’s
expertise in all three areas. Not only that, but we have made many
ergonomic refinements to simplify operation and make it more
enjoyable to get all the performance this magnificent receiver is
capable of delivering.
Using the latest 32 bit Dual Core Floating Point DSP technology,
NAD was able to include the most popular surround formats from
Dolby and DTS, as well as including NAD’s own highly regarded
music surround mode; EARS. Unlike, the typical artificially enhanced
DSP modes like “Club”, “Stadium”, and “Church”, EARS uses DSP
technology to extract the natural ambience of the recording. This
is redirected to the surround channels to create natural surround
sound from any 2 channel source. This induces a warm natural
reverberant effect without the artificial “BOING” of artificial reverb.
The surround mode of the source material is automatically
detected via the digital inputs of the T775, and the “highest” or
most advanced form of decoding is switched on. Conversion of
the encoded digital bitstream is performed with high resolution
and extremely linear Burr-Brown 24 bit/192kHz D/A Converters
carefully selected for their performance capabilities. The T775
uses five two-channel DACs rather than the usual single 8 channel
DAC favored by many of today’s surround sound receivers. We
have found that the sonic performance of the two-channel DACs
used in a dual differential mode, is well worth the extra cost of this
NAD’s reputation for producing power amplifiers that are both
potent and musical is upheld in fine manner with the T775.
Boasting a minimum of 100 watts continuous power per channel,
the T775 can fill even large rooms to lifelike sound levels.
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.
The T775 has all the flexibility required to serve as the command
center for even the most sophisticated Home Theater and multiroom systems. A full suite of video switching caters to all the
popular video formats (HDMI, Component Video, S-Video, and
Composite Video). The T775 uses the very latest V1.3 HDMI chips
from Analog Devices. All input resolutions (480, 576, 720, and
1080) are supported at the output. All analog formats are cross
converted between Composite, S-Video and Component. These
analog inputs are also up-converted to HDMI output. Digital inputs
(including a handy front panel input) and outputs are available
in both coaxial and optical formats to make it easy to attach all
your digital sources for playback and recording. Digital Inputs are
converted to analog for multi-zone applications.
With the T775, NAD has made it easy to add more speakers for
listening to music in additional rooms or “zones”. 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.
More elaborate systems can also be created using the Zone 2,
3 and 4 outputs to add additional amplifiers and speakers with
T 775 Surround Sound A/V Receiver
the added benefit of independent source selection and volume
control. In addition to the main zone and second AV zone, we
have added the flexibility to change the Tape Outputs to be third
and fourth Audio Zones with independent source and volume
capability. There is complete flexibility in setting up these outputs.
Additionally, the Back Surround Amplifiers can be assigned to any
of these zones, allowing for a simultaneous 5.1 Home Theater
and a powered second zone. A separate second zone remote is
There are also 12 volt triggers to automatically switch remote
zone amplifiers on and off, and even an RS-232 data port for
connection to highly advanced automated control systems.
Thoughtful features like discrete On and Off codes, direct access
to inputs and FM station presets facilitate the integration of the
T775 into elaborate remote control systems.
An analog 7.1 input is also provided for attaching a DVD-Audio
player or any other yet to be developed surround decoder, making
sure the T775 does not become obsolete anytime soon. Preamp
outputs allow the addition of more powerful amplifier channels.
The T775 includes a data port specifically designed to control
an iPod with the addition of NAD’s optional iPod Dock accessory.
This allows the iPod’s meta-data to be displayed on the OSD and
be controlled using the NAD remote control. Audio and Video
connections and iPod recharging are also featured in the iPod
All input circuitry is contained on 5 easily removable plug in cards.
Although this construction technique is more costly to implement,
it offers several important advantages. 1) Speed to market for new
technology. 2) Upgrade for older units 3) Simple field service.
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
operation of the T775 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 T775 is informed of your
specific system set-up, all settings are stored in a non-volatile
memory making this a one time task. The informative front panel
display indicates complete information about the source being
listened to or watched including selected surround mode and
volume setting. The front panel display can be easily customized
by renaming inputs and even determining what information you
prefer to have displayed and when to display it.
Automatic Audio Setup is available using the supplied calibrated
microphone. Simply place the microphone in the listening position
and select Audyssey auto-calibration and the system automatically
detects which speaker is connected, chooses the ideal crossover
point to the subwoofer, checks speaker phasing, and adjusts
the levels and delays. These adjustments are made to a level of
accuracy that it would be difficult to duplicate by ear alone.
Audyssey MultEQ XT is the latest in digital sophistication, allowing
for improved frequency response in a large “family sized” sweet
spot. Using the calibration microphone to “hear” your room, a
series of test tones measure the speakers’ response and the
room’s distorting echoes independently, and then calculates an
ideal response that minimizes the effects of the room’s echoes.
While this sounds simple, the digital technology that is required
for this level of performance would have cost many thousands of
dollars just a few short years ago. But the electronic technology
is only half the story, since an advanced knowledge of acoustics is
also required to get good results from such a system. Working
closely with Audyssey, NAD’s acoustic engineers developed the
final response curves that reflect our own performance values.
The tuner includes 40 favorite station presets in any mix of AM
or FM stations. FM stations that don’t automatically display their
name in addition to their broadcast frequency (RDS function),
can instead be given a custom name. We also include a “Digital
Broadcast Ready” socket on the rear panel for adding an outboard
XM module. All the control software is included, just plug in the
module and start enjoying the clear sound and expansive content
selection available with Digital Radio Broadcast.
Five independent “Audio Video Custom Presets” can store unique
listening modes, DSP options, tone, speakers and display 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 T775 also remembers your last used settings
when switched in and out of Standby mode.
The included HTR-3 remote handset is itself an engineering tour-deforce. Able to control up to 8 different components, the device key
illuminates to clearly shows what device is being controlled. It has
illuminated buttons for easy operation in low light environments,
and the length of time the illumination is on can easily be adjusted.
Remote commands for products not already included in the HTR
3’s memory can be easily “taught” to the HTR 3. And the HTR
3’s Macro function allows up to 64 individual commands to be
triggered by the pressing just two keys. With this feature, all of
the commands required for watching a DVD, for example, are
executed automatically by the HTR 3’s Macro function.
The T775 offers remarkable performance and flexibility in a
compact and simple to operate package. This multi-channel
powerhouse will bring your favorite music and movies to life in your
home entertainment room with an absolute minimum of fuss and
a maximum of pure enjoyment.
Amplifier Section
Simultaneous Full Disclosure Power
7 x 100W (20dBW)
Minimum Continuous Power (FTC)
Power Output Stereo Mode
(8 Ohms within rated distortion)
Harmonic Distortion; FM Mono
Harmonic Distortion; FM Stereo
7 x 165W (22.2dbW)
Signal/noise; Mono
130W (21.1dbW)
Signal/noise; Stereo
(4/8 Ohms, 20Hz - 20kHz, at rated distortion)
Stereo separation at 1kHz
IHF dynamic power; 8 Ohms
2 x 200W (23dBW)
IHF dynamic power; 4 Ohms
2 x 320W (25.1dBW)
IHF dynamic power; 2 Ohms
2 x 420W (26.2dBW)
Frequency response; + 1.5dB
30Hz - 15kHz
XM Ready
Total harmonic distortion at rated power
Video Section
IM distortion at rated power
Input and output impedance
75 Ohms
Component Video Bandwidth
Damping factor 8 Ohms
Input sensitivity and impedance
Frequency response
400mV / 50k Ohms
10 to 20,000 Hz
Signal/noise ratio; ref rated power 8 Ohms
Signal/noise ratio; ref 1W / 8 Ohms
Remote Controls
HTR-3 (main) / ZR-4 (2nd zone)
HDMI – Audio + Video
Physical Specifications
Net Dimensions (W x H x D)
17 1/8 x 6 1/8 x 15”
(435 x 155 x 382mm)
Gross Dimensions (W x H x D)*
Tuner Section
17 1/8 x 6 5/8 x 16 9/16”
(435 x 169 x 421mm)
Input sensitivity Mono
50dB Stereo:
Net Weight
50 lbs (22.75kg)
* Gross dimensions include volume knob / speaker terminals / connectors / feet.
Note: Installers should allow a minimum clearance of 2 - 4 inches for
wire management.
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. © 08/07 NAD Electronics International.
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