NAD Stereo System T750 User Manual

Surround Sound Receiver  
• 3 x 50 Wa t t s; in e xce ss o f 40 a m p s p e a k cu rre n t ca p a b ilit y! • 2 x 30 Wa t t s fo r re a r  
• Im p e d a n ce Se n sin g Circu it ry (ISC) • 5.1 in p u t fo r e xt e rn a l d e co d e r  
• Pre -o u t s fo r a ll 5 ch a n n e ls • Su b w o o fe r o u t p u t • 4 Au d io in p u t s; 2 t a p e o u t p u t s  
• 4 Vid e o in p u t s; 1 VCR o u t p u t • ANALOG Do lb y Pro Lo g ic d e co d in g  
• Ha ll Mu sic su rro u n d m o d e To n e Co n t ro l De fe a t b u t t o n  
• Go ld Pla t e d So cke t s t h ro u g o u t • 30 p re se t s  
• So ft Clip p in g • Syst e m Re m o t e Co n t ro l • NAD-Lin k  
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. NAD firmly believes that there are many people for  
whom music will always come first. With NADs reputation for high value /  
high performance it was obvious that the Model T750 would have to please  
Audiophiles and Videophiles alike.  
ANALOG Do lb y Pro Lo g ic d e co d in g  
Many manufacturers of AV products boast about achieving Dolby Pro Logic  
decoding in the digital domain for their products. While it is true that this  
may bring some advantages, NAD found that at this price level Analog  
decoding is much preferable. The reasons are very simple: First, to do  
decoding in digital domain, an analog Dolby Pro Logic source has to go  
through a stereo Analog-to-Digital converter to make the signal digital so  
the signal can be decoded. After decoding, 4 independent channels need  
to be converted back to analog which requires 2 stereo Digital-to-Analog  
decoders. It is a well-known fact that the sound quality of CD players  
depends a great deal on the single stereo Digital-to-Analog converter that  
is required. With three times the amount of converters required for Pro  
Logic decoding, the potential degradation in sound quality is tremendous.  
By staying in the analog domain for Dolby Pro Logic decoding, the signal  
stays clean and crisp, without the harsh, digital artifacts that can mar the  
performance of so many other Surround Sound receivers.  
De sig n  
By doing away with many costly and superfluous features, NADs engineers  
concentrated only on the truly important parts of an A/V receiver. The NAD  
Model T750 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 real-world loudspeakers.  
Im p e d a n ce Se n sin g Circu it ry (ISC)  
Fle xib ilit y  
The new Impedance Sensing Circuitry (ISC) topology designed by Bjørn  
Erik Edvardsen allows the T750 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. This also gives it an unusual characteristic compared to  
traditional amplifiers when measuring its continuous output power; the  
RMS output power remains the same at 50 Watts with either an eight or a  
four ohm load. This is not unusual for NAD however.  
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 T750’s  
dynamic capabilities; up to 160 Watts into 2 ohms and up to 40 amps  
current capability.  
As one would expect from any NAD component, the Model T750 offers  
great flexibility; 4 video, and 4 audio inputs allow you to connect all your  
sources with ease.  
Hooking up a DVD player with digital surround is a snap with the provided  
5.1 input, making the T750 compatible with all surround formats, both  
current and future. With pre-amplifier outputs for all channels you can  
easily upgrade your output power too.  
To ensure long-term 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.  
The remote control handset supplied with the Model T750 also has  
controls for NAD CD players or changers and a (dubbing) cassette deck.  
With NAD Link it is possible to remote control other NAD products which  
do not have their own remote control (NAD Cassette Deck Model 616, for  
instance) from the T750’s remote control.  
 
Ea se o f u se  
Ease of use is another key factor for NAD products and the Model T750 is  
no exception. The built-in test tone generator - accessible by remote control  
- allows for accurate calibrating of the Front, Center and Surround  
speakers.  
Thirty presets can be programmed at random with either AM or FM  
stations. Three banks of 10 stations means you can organzize the presets to  
personal perference or program type.  
complicated, the engineers concentrated on perfectng the Dolby Pro Logic  
decoding and steering. For music the Hall mode can be engaged, adding a  
natural level of reverberance and life.  
In keeping with the NAD tradition, the Model T750 provides performance,  
simplicity and value which is hard to match. This new addition to the NAD  
line of products is equally at home in a system for discerning music lovers,  
as it is in a system for those looking to get the best out of Dolby Surround  
Laser Discs, Videos and Compact Discs.  
Rather than providing many different surround modes (Church, Jazz,  
Stadium, etc.) which makes so many other receivers cluttered and over  
PRELIMINARY SPECIFICATIONS - NAD MODEL T750  
Am p lifie r Se ct io n  
Power Output: Stereo Mode (8 within rated distortion)  
IHF dynamic power  
2 x 50 W (16.9 dBW)  
8 2 x 56 W (17.5 dBW)  
42 x 89 W (19.5 dBW)  
22 x 140 W (21.5 dBW)  
Surround Mode (L, C, R) 3 x 50 W (16.9 dBW)  
(LS + RS) 2 x 30 W (14.8 dBW)  
at rated power (Front) 0.08%  
at rated power (Front) 0.08%  
150 mV / 50 kΩ  
Total Harmonic Distortion  
IM Distortion  
Sensitivity and Impedance  
Frequency Response  
Signal to Noise Ratio  
5 to 50,000 Hz ±0.5 dB  
Line Ref 70 W / 8 106 dB (IHF A)  
Ref 1 W / 8 81 dB (IHF A)  
Tu n e r Se ct io n  
Mono 1.3µV  
Stereo 2.5µV  
30Hz - 15kHz: ±1.5 dB  
Mono 0.15%  
Input Sensitivity  
Frequency Response  
Total Harmonic Distortion  
Stereo 0.25%  
1 kHz 45 dB  
Mono 73 dB  
Stereo Separation  
Signal to Noise Ratio  
Stereo 67 dB  
Ph ysica l Sp e cifica t io n s  
Dimensions (W x H x D)  
Net weight  
Shipping weight  
17.14"x 5.12"x 12.41" / 435 x 130 x 315 mm  
21.16 lbs / 9.6kg  
23.8 lbs / 10.8kg  
Appearance and features are tentative.  
Dolby, Dolby Digital and Pro Logic are registered trademarks of the Dolby Laboratories Licensing Corporation  
NAD reserves the right to change specifications or design at any time without notice. All specifications are those in effect at time of printing.  
 

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