NAD Electronics Theater T750 User's Manual
Contents
1. NADI T750 Surround Sound Receiver Surround Sound Receiver T Tila Pl wk Fi in BATHE fy THAR SF APs EIF RE Gall 2 F e 3 x 50 Watts in excess of 40 amps peak current capability 2 x 30 Watts for rear e Impedance Sensing Circuitry ISC 5 1 input for external decoder e Pre outs for all 5 channels Subwoofer output 4 Audio inputs 2 tape outputs e 4 Video inputs 1 VCR output ANALOG Dolby Pro Logic decoding e Hall Music surround mode e Tone Control Defeat button e Gold Plated Sockets througout 30 presets e 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 NAD firmly believes that there are many people for whom music will always come first With NAD s reputation for high value high performance it was obvious that the Model T750 would have to please 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 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 conditi2. as 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 Ease of use 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 Rather than providing many different surround modes Church Jazz complicated the engineers concentrated on pertectng 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 Stadium etc which makes so many other receivers cluttered and over Laser Discs Videos and Compact Discs PRELIMINARY SPECIFICATIONS NAD MODEL T750 Power Output Stereo Mode 8 within rated distortion Ampli
3. atories 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
4. fier Section 2x 50 W 16 9 dBW IHF dynamic power 8Q 2x56 W 17 5 dBW 4Q 2x89 W 19 5 dBW 2Q 2x 140 W 21 5 dBW Surround Mode L C R 3x50 W 16 9 dBW LS RS 2x30 W 14 8 dBW Total Harmonic Distortion at rated power Front 0 08 IM Distortion at rated power Front 0 08 Sensitivity and Impedance 150 mV 50 kQ Frequency Response 5 to 50 000 Hz 0 5 dB Signal to Noise Ratio line Ref 70 W 8Q 106 dB IHF A Ref1W 8Q 81 dB IHF A Tuner Section Input Sensitivity Mono 1 3uV Stereo 2 5uV Frequency Response 30Hz 15kHz 1 5 dB Total Harmonic Distortion Mono 0 15 Stereo 0 25 Stereo Separation 1 kHz 45 dB Signal to Noise Ratio Mono 73 dB Stereo 67 dB Dimensions Wx Hx D Net weight Shipping weight Physical Specifications SURROUND 17 14 x 5 12 x 12 41 435 x 130 x 315 mm 21 16 Ibs 9 6kg 23 8 Ibs 10 8kg ACH MULTI SPEAKERS T Sean CAUTION ie sank OnE F ENTER DO NOT OPEN WARNING SHOCK HAZARD DO NOT OPEN LO AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR R ae TORO OOO orr B on FRONT AorB 4 Q MIN SPEAKER ENTE 4 MIN PEAKER S2 aan DIGITAL AUDIO NPUT CENTER ND R s 78 FRONT l R 66 L 0606000008 ve peat DESIGNED IN LONDON ENGLAND O 9 O O O 9 9 9 O O O o a e 60000000000 OU OU 010 TE ta TAPE ae vines nes A VIDEO 3 VIDEO 4 NO Appearance and features are tentative Dolby Dolby Digital and Pro Logic are registered trademarks of the Dolb Labor
5. irst 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 Flexibility 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 9 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 h
6. ons driving an 8 ohms resistor but can have great difficulties in driving real world loudspeakers Impedance Sensing Circuitry ISC The new Impedance Sensing Circuitry ISC topology designed by Bj rn 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 ANALOG Dolby Pro Logic decoding 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 F
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