NAD Theater T760 - Manual

• 60W x 5 Continuous power (8 ohms); all channels driven simultaneously
• 200W Dynamic power (2 ohms) • Up to 40 amps of peak current capability
• Dolby Digital & DTS decoder integrated • Crystal DSP processor
• Crystal Sigma-Delta ADCs and DACs with 96kHz/24 bit resolution • 5.1 input for
external decoder • Pre-outs for all channels (5.1 out) • Impedance Sensing Circuitry
(ISC) • CD; Tape; 5 Video inputs; 2 video outputs • 3 S-Video inputs; 1 S-Video output;
S-Video and Composite Monitor output • 3 digital inputs; 2 RCA; 1 TOS Link
• EARS (Enhanced Ambience Recovery System) music surround mode • RDS tuner (RDS
PS & RDS RT) • 30 presets • Soft Clipping • System Remote Control • NAD-Link
Most A/V receivers available on the market today focus predominantly on
the Video and Surround Sound aspects, leaving the audio circuitry almost
as an afterthought. At NAD we believe that there are many people for whom
music will always come first so, with NAD's reputation for high value / high
performance it was obvious that the Model T760 would have to please both
Audiophiles and Videophiles alike.
Design:
By doing away with many costly and superfluous features, NAD's engineers
concentrated only on the truly important parts of an A/V receiver. As the
new Digital Surround Sound formats allow for the same wide bandwidth
and large dynamic range for the front channels as the rear channels, all
five channels are capable of putting out an equal amount of power. As
usual with NAD, the T760 uses discrete output stages only, including the
surround channels. The benefits of this approach have been proven over
the years in many acclaimed NAD amplifiers and receivers. The integrated
output modules favored by so many other designs will deliver a decent
amount of power under laboratory conditions, driving an 8 ohms resistor,
but can have great difficulties in driving moderately difficult speakers. The
NAD T760 uses the new Impedance Sensing Circuitry (ISC) topology
(patent pending) designed by Bjørn Erik Edvardsen.
ISC:
The ISC topology allows the T760 to deliver maximum performance under
virtually any circumstance, independent of the loudspeakers it is driving.
The circuitry automatically recognizes the impedance characteristics of the
loudspeaker and will then adjust its power supply settings to best cope
with that specific load. The benefit of this innovative design is that distor-
tion remains low, not just with test tones in the lab, but also when playing
real music through real loudspeakers.
NAD takes a stance to the mindless "brochure power" approach which
doesn’t give a realistic indication of an amplifier’s true capabilities.
Instead, the ISC topology is a practical approach to enable an amplifier to
easily deal with dynamics and difficult loads. More meaningful are the
T760’s dynamic capabilities; up to 200 Watts into 2 ohms and up to 40
amps peak current capability.
Whereas it is widely accepted with CD players that the digital and analog cir-
cuitry play a vital role in the performance, it appears that many AV receivers
employ only mediocre Digital-to-Analog (DAC), Analog-to-Digital (ADC)
converters and Digital Signal Processors (DSP). For the T760 the engineers
have chosen the best available within the budget: Crystal™ Sigma-Delta
DACs and ADCs, each with 24-bit resolution. The DSP chip that handles the
Dolby Digital, DTS, Dolby Pro Logic and EARS Modes, is also from the well
renowned manufacturer Crystal™. The combination of these components
ensure that the integrity of the original signal, be it music or an action
movie, retains its full resolution and dynamics.
Flexibility
As one would expect from any NAD component, the Model T760 offers
great flexibility: the 5 video (1 on front panel for easy connection of game
console or camcorder) and 2 audio inputs allow you to connect all your
sources with ease. Three of the video inputs are full S-Video and
Composite compatible.
Besides these "normal" inputs, the T760 also sports an external decoder
(5.1 channel) input so you can easily expand your receiver in the future
with an outboard decoder for another surround sound format. 3 Digital
inputs are provided, to cater for every eventuality: Two coaxial digital
inputs and a TOS Link for sources with optical outputs. With pre-amplifier
outputs for all channels (Left, Centre, Right, Left Surround, Right Surround
and subwoofer) you can easily upgrade your output power too.
To ensure long-terms contact reliability, all speaker terminals are of the
robust binding post variety rather than the usual spring clips and all other
audio sockets are gold plated.
T760 Surround Sound Receiver