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NAD
T765 HD A/V Receiver Receivers don’t make music and filmsound by driving laboratory test-loads, they do it by driving loudspeakers. And loudspeakers, whether labeled 8O or 4O in “nominal impedance,” are far more challenging. A speaker that “looks like” an 8O resistor at some frequencies will show 4O at others, and often, 3O or even 2O 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. 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. |
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| Performance: 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 T765 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 expected 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 T765, and the “highest” or most advanced form of decoding is switched in. 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 T765 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 configuration. NAD’s reputation for producing power amplifiers that are both potent and musical is upheld in fine manner with the T765. Boasting a minimum of 80 watts continuous power per channel, the T765 can easily fill a room with 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 favourite films and
music recordings.s With the T765, NAD has made it easy to add more speakers for listening to music in an additional room or “zone”. 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 outputs to add additional amplifiers and speakers with the added benefit of independent source selection and volume control. For added flexibility the back surround amplifier channels can be assigned to Zone 2 if the main zone is 5.1. A separate second zone remote is included. 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 T765 into elaborate
remote control systems. |
Flexibility, Cont.: 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: 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 T765 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. The tuner includes 40 favourite 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 or DAB 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 T765 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.
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