NAD T751 Receiver
Contents
1. FMMUTE DISPLAY MODE Surround Sound Receiver T 751 PRESET 2 MEMORY TUNE DOWN UP gt O O O O CD DIGITAL SURROUND RDS VOLUME PHONES VIDEO 5 INPUT VIDEO L R MONO Caupio SURROUND TAPE VIDEO 1 VIDEO 2 VIDEO 3 VIDEO 4 VIDEOS EXT 5 1 MODE MONITOR cD FM 0 TREBLE 2 m 20 gt z C r 2000 NAD ELECTRONICS LTD T 751 IMPORTANT SAFETY INSTRUCTIONS CAUTION ATTENTION CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL Warning To reduce the risk of fire or electric shock do not expose this unit to rain or moisture The lightning flash with an arrowhead symbol within an equilateral trian gle is intended to alert the user to the presence of uninsulated danger ous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the product Do not place this unit on an unstable cart stand or tripod bracket or table The unit may fall causing serious injury to a child or adult and serio2. 2000 NAD ELECTRONICS LTD T 751 2000 NAD ELECTRONICS LTD T 751 THE OPTICAL DIGITAL INPUT 1 IS LINKED TO THE VIDEO 1 INPUT T VIDEO STEREO AUDIO FRPNT R SPEAKE RS L 2000 NAD ELECTRONICS LTD T 751 1 1 1 LI LI n 1 i higa 1 COMPOSITE OPTICAL 1 VIDEO OUT DIGITAL OUT S VIDEO OUT THE COAXIAL DIGITAL INPUT 2 IS LINKED TO THE VIDEO 2 INPUT VIDEO STEREO AUDIO TS on SWITCHED 2000 NAD ELECTRONICS LTD T 751 1 1 1 1 1 1 1 1 1 1 OUT S VIDEO OUT NAD 7 NAD 8 GB 751 SURROUND SOUND RECEIVER NOTES ON INSTALLATION Your NAD T 751 should be placed on a firm level surface Avoid placing the unit in direct sunlight or near sources of heat and damp Allow adequate ventilation Do not place the unit on a soft surface like a carpet Do not place it in an enclosed position such a bookcase or cabinet that may impede the air flow through the ventilation slots Make sure the unit is switched off before making any connections The RCA sockets on your NAD T 751 are color coded for convenience Red and white are Right and Left audio respectively orange for digital input yellow for Video Composite and NAD Link
3. Le NL Fi 12 11 FRONT PANEL CONNECTIONS Figure 2 LSZ L ALI SOINOH19313 AYN 000 9 0941 6661 amp UP SURROUND TAPE IDEO 1 VIDEO 2 VIDEO 3 VIDEO 4 VIDEO 5 EXT 5 1 MODE MONITOR FM PRESET Surround Sound Receiver T 751 pram FM MUTE DISPLAY MODE MEMORY DOWN DIGITAL REMOTE CONTROL Figure 4 Figure 3 IGHT DYN R ON o Figure 5 dE DECK e i OO OO NAD z Figure 6 arr Df LD ZY AS e lt Of e SIMPLE 751 SYSTEM Figure VIDEO N pen D Ic E SS 2 Wum LOO 9o 9674 SOPHISTICATED 751 SYSTEM Figure AUDIO GAMES TV IN 1 VIDEO STEREO AUDIO CENTER ERS L SPEAKER R SPEA SPEAKERS L D X E C LE C Hi Ten NN SUBWOOFER U 74 ON QU J JUL Ge Ge Ge Ge ac ie Y ee T 2 NS AGUA SO SWITCHED gt D C 1A MAX TAPE 5 o a Se IN OUT s NAD LINK 4 2 3 cD IN
4. Use high quality leads and sockets for optimum performance and reliability Audio RCA leads will function correctly for video signals although it is rec ommended to use dedicated video leads where pos sible For the digital inputs use dedicated leads for digital signal transfer Ensure that leads and connec tors are not damaged in any way and all connectors are firmly pushed home For best performance use quality speaker leads of 16 gauge 1 5mm thickness or more If the unit is not going to be used for some time disconnect the plug from the AC socket Should water get into your NAD T 751 shut off the power to the unit and remove the plug from the AC socket Have the unit inspected by a qualified service technician before attempting to use it again Do not remove the cover there are no user ser viceable parts inside Use a dry soft cloth to clean the unit If necessary lightly dampen the cloth with soapy water Do not use solutions containing benzol or other volatile agents REAR PANEL CONNECTIONS Figure 1 1 FM amp AM ANTENNA AM ANTENNA An AM loop antenna is supplied with the T 751 and is required for AM reception Open the clip terminal lever and insert the wire from the antenna Closing the lever will lock the wire in place Fig 5 Test vari ous positions for the antenna but always ensure the loop is placed vertically for best reception Placing the antenna close to large metal items such as metal shelv
5. Display choose sub menus and change settings The setup procedure is broken down in three sec tions 1 Speaker Settings 2 Channel Balance 3 Channel Delays Speaker Settings First you need to indicate which speakers are con nected to your T 751 Besides the Main speakers Left amp Right these can include a Center two Surround Speakers and a Subwoofer Call up the SETUP menu of the On Screen Display Fig 7 Select the SPEAKER SETTINGS Fig 11 Highlight PRESET and use 4 or gt cursor button to select the preset PRESET 1 2 or 3 that best applies to current setting or change the speaker fields individually as desired Four modes available appropriate to the T 751 s setup LARGE or SMALL and ON or OFF The LARGE mode is used when the speaker is full range and capable of reproducing the entire audible frequency spectrum 20Hz to 20kHz The SMALL mode is used when the speaker is not capable of reproducing the deepest bass portion of the audio fre quency 20Hz to 100Hz The ON mode is used when the speaker is active and receives the audio information intended The OFF mode is used when the speaker is inactive Audio signals intended for speakers set to the OFF position are redirected to the main speakers T 751 comes with 3 factory presets for typical Home Theater systems and ease installation Refer also to chapter On Screen Display section 4 for more information Using a separate center channel spe
6. NOTE When headphones are inserted the signal from the Subwoofer output will be muted 8 MONITOR OUT Composite Video and S Video outputs for connect ing a TV or Video Monitor to view video sources con nected to VIDEO 1 to VIDEO 5 Using a Video RCA to RCA lead connect the Video Line In on the TV or monitor to the MONITOR OUT Note that an S Video signal from Video input 1 through 3 will also be available as a Video Composite signal on Monitor out if the corresponding source is selected The composite video input signals from Video 1 to 5 No 5 yellow sockets will also be avail able as S Video signal on the Monitor Out socket If you use both S Video and Video composite sources you will only need to connect the S Video Monitor Out to the television or projector 9 FRONT CENTER amp SURROUND SPEAKERS FRONT SPEAKERS Connect the right speaker to the terminals market R and R ensuring that the R is connected to the terminal on your loudspeaker and the R is connected to the loudspeaker s terminal Connect the terminals marked L and L to the left speaker in the same way Always use heavy duty 16 gauge 1 5mm or thick er stranded wire to connect loudspeakers to your T 751 Unscrew the speaker terminal s plastic bushing Insert the pin or bare cable end into the hole of the terminal and then secure the cable by tightening down the terminal s bushing Fig 6
7. To avoid any danger of bare metal from the speak er cables touching the back panel or another connec tor ensure that there is only 1 2 1 27cm of bare cable or pin and no loose strands of speaker wire NOTE This unit is designed to produce optimum sound quality when speakers with impedance within the set s ranges are connected Please check the follow ing information and choose speakers with the correct impedance for the connections FRONT SPEAKERS 4 ohms min per speaker CENTER SPEAKER 4 ohms min SURROUND SPEAKERS 4 ohms min per speaker CENTER SPEAKER This connects the center loudspeaker that is used when the T 751 is operated in Dolby Digital DTS Dolby Pro Logic EARS surround sound mode or with the 5 1 Ch input selected Connect the center speaker in the same way as described with FRONT SPEAKERS above SURROUND SPEAKER This connects the Surround loudspeakers that are used when the T 751 is operated in Dolby Digital DTS Dolby Pro Logic EARS Surround sound modes or with the 5 1 Ch input selected Connect the surround speakers in the same way as described with FRONT SPEAKERS above NOTE The Center and or Surround speakers must be selected as Large or Small in the Set up menu SPEAKER SELECTION when speakers are con nected to these outputs Refer also to chapter On Screen Display OSD for more information 10 SOFT CLIPPING When any amplifier is driven beyond its power output capabi
8. 14 15ms 1ms per step In Dolby Pro logic mode only the rear channel delay time can be adjusted as following options REAR 15 16 17 28 29 30ms 1ms per step For other modes the channel delay time cannot be adjusted Highlight SAVE amp EXIT and press ENTER to save the settings and return to the SETUP menu Otherwise select DO NOT SAVE amp EXIT to leave without saving any changes 4 SPEAKER SETTINGS Highlight SPEAKER SETTINGS in the SETUP menu and press ENTER on the remote You will see a screen similar to the following Fig 11 SPEAKER SETTINGS PRESET MAIN CENTER LARGE LARGE LARGE SURROUND SUBWOOFER ON DO NOT SAVE amp EXIT SAVE amp EXIT The size and number of speakers can be described in the SPEAKER SETTINGS menu Press lt or P cursor button to select the preset PRESET 1 2 or 3 that best applies The description LARGE and SMALL mean the fol lowing The LARGE mode is used when the speaker is full range and capable of reproducing the entire audible frequency spectrum 20Hz to 20kHz The SMALL mode is used when the speaker is not capable of reproducing the deepest bass portion of the audio frequency 20Hz to 100Hz The choices ON and OFF mean the following The ON mode is used when the speaker is active and receives the audio information intended The OFF mode is used when the speaker is inac tive Audio signals intended for speakers set to the OFF positio
9. RDS RT To view this information use the DISPLAY button With stations carrying RDS information the DIS PLAY button scrolls between three different display modes each successive push of the button engages the next one of the three modes a In the default mode the station s RDS name is dis played Program Service PS normally the sta tion s calling letters BBC R3 for instance b From the default mode press the button once to view Radio Text RT This can be additional infor mation such as the presenter s or program s name what song is playing etc This text scrolls continu ously over the 8 alphanumeric display segments It takes a few seconds for the tuner to gather the RT information so immediately after tuning to a sta tion and selecting to view RT the display will indi cate NO TEXT and default to the station name If no RT information is available the display will also show NO TEXT for three seconds before revert ing to the default mode c Press the button from the display RT mode to dis play the station frequency Press again to return to the default mode a When the DISPLAY button is pressed when tuned to a non RDS station the display will show NO NAME for three seconds before reverting to the default display NAD 11 The DISPLAY button toggles the display to show either the station frequency or user entered station name If no user name was entered the display will just
10. as a Preset press MEMORY No 5 MEMORY and the preset section in the dis play panel will start to flash If no other button is pressed within 10 seconds MEMORY will stop to flash and the receiver will default to its previous state Press either the 4 down or gt up button to select which Preset number you wish to assign to the station from 1 to 30 on FM and 1 to 10 on AM shown as a flashing number in the Display Panel and then press MEMORY No 5 again The Memory light in the Display Panel will go out and the station is now stored in your NAD T 751 s memory To exit the Memory mode without storing a station leave all the tuner controls untouched the Memory mode will automatically cancel itself after 10 seconds The Memory Presets have a memory back up so they will remain stored for several weeks even if the Receiver is switched off or unplugged from the mains supply NOTE You can enter a new station into an unused Preset or over write an existing programmed Memory Preset By doing this you will replace the radio station previously held on that Preset number Recalling a Preset station To select a Preset station select the Preset mode by pressing the PRESET TUNE button No 6 until PRESET lights up in the display Press either the down gt up button No 7 until the right Preset is found and shown in the Display Panel NOTE Any unused Presets will be sk
11. engages Rewind engages Fast Forward NOTES Direct sunlight or very bright ambient lighting may affect the operating range and angle for the remote control handset The infrared remote control command receiver located on the far left of the display window receives commands from the remote control There must be a clear line of sight path from the remote control to this window if that path is obstructed the remote control may not work ON SCREEN DISPLAY OSD The NAD T 751 is equipped with an elaborate On Screen Display facility OSD As the OSD is an essential tool to set up the various parameters for Surround sound correctly it is recommended that you connect your monitor or television to the T 751 Depending on your source and or the television System used you must first select the correct video system If the OSD rolls over the screen you must select another system PAL or NTSC While pressing the MEMORY button No 5 on the front panel press the VIDEO 1 input selector but ton in section No 11 repeatedly until the desired System is shown in the display area The OSD can be engaged by pressing one of the four cursor buttons on the remote control The SETUP Menu will appear as below Fig 7 SETUP 1 INPUT SETTINGS CHANNEL BALANCE CHANNEL DELAYS SPEAKERS SETTINGS EXIT Use the cursor buttons on the remote control to navigate select the desired menu and options then press ENTER No 5 to
12. rear panel The power supply cord should be routed so that it is not likely to be walked on or pinched especially near the plug convenience receptacles or where the cord exits from the unit Unplug the unit from the wall outlet before cleaning Never use benzine thinner or other solvents for cleaning Use only a soft damp cloth The power supply cord of the unit should be unplugged from the wall outlet when it is to be unused for a long period of time Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through any openings This unit should be serviced by qualified service personnel when A The power cord or the plug has been damaged or B Objects have fallen or liquid has been spilled into the unit or C The unit has been exposed to rain or liquids of any kind or D The unit does not appear to operate normally or exhibits a marked change in performance or E The device has been dropped or the enclosure damaged DO NOT ATTEMPT SERVICING OF THIS UNIT YOURSELF REFER SERVICING TO QUALIFIED SERVICE PERSONNEL Upon completion of any servicing or repairs request the service shop s assur ance that only Factory Authorized Replacement Parts with the same characteris tics as the original parts have been used and that the routine safety checks have been performed to guarantee that the equipment is in safe operating condi tion REPLACEMENT WITH UNAUTHORIZED PARTS MAY RESULT IN FI
13. the first reasonably strong radio station where it will stop Press the Down Up button again for 1 2 sec ond to start searching again NOTE Automatic tuning is available on both FM and AM By briefly tapping the down or gt up but tons you can engage manual tuning respectively down or up the frequency band for precise tuning to a specific frequency With each successive tap of the keys the tuner will take 0 1 MHz steps 120V ver sion or 0 05 MHz steps 230V version on FM so you can accurately tune into the desired frequency For AM the tuning steps are factory set at 9 kHz for the 230V version or 10 kHz for the 120V version Set the AM STEP switch on the back panel No 2 in back panel drawing to manually set the AM tuning steps to 9 or 10 kHz refer also to chapter Rear Panel Connections section 2 AM stepping frequency This tuning mode can also be useful when trying to receive a radio station which is too weak for the auto search mode When tuned accurately to a station gt TUNED 4 will light up in the display Very weak radio station signals however may be suppressed by the muting circuit If such a very weak station is in stereo it will have a high level of background hiss Switching to Mono Mode and disengaging the muting circuit by depressing the FM MUTE MONO button No 4 will allow the station to be heard and will can cel most or all of this background noise Refer to the separate c
14. used An external source such as a decoder or DVD play er with a decoder built in MPEG for instance can be connected to the 5 1Ch input No 4 on the front panel When the EXT 5 1 CH input is selected no other surround modes are available To obtain the best performance possible it is impor tant that the system and all speakers have been set up correctly Refer to the chapters On Screen Display and Setting Up the Surround System TAPE MONITOR Selects the output from a tape recorder when play ing back tapes or monitoring recordings being made through the Tape sockets Press the TAPE MONI TOR button once to select it and again to return to the normal input selection The Tape Monitor function does not override the current input selection For example if the CD is the active input when Tape Monitor is selected the CD signal will continue to be selected and is sent to the Tape Out Video 3 and Video 4 Out sockets but it is the sound from recorder connected to Tape that will be heard on the loudspeakers When Tape Monitor is selected TAPE MONITOR will remain lit until Tape Monitor is disengaged again CD Selects the CD as the active input FM Selects FM radio FM is also automatically selected when an FM Preset is selected AM Selects AM radio AM is also automatically selected when an AM Preset is selected VIDEO OUTPUT The video signal available on the S Video and Video Composite outputs is depe
15. versa The total power consumption of any components connected to the AC outlets may not exceed 120 Watts Never connect the mains lead of a power amplifier to either outlets of the NAD T 751 NOTE The AC outlets should be used with units with a COMBINED power consumption of no more than 120 Watts 13 AC POWER CORD After you have completed all connections to the amplifier plug the AC line cord into a live wall sock et 14 COOLING FAN The cooling fan allows T 751 to deliver high amounts of power without the unit becoming too hot The fan will only operate when the temperature of the internal components starts to become hot NOTE Ensure that the air outlets of the fan aren t blocked in any way FRONT PANEL CONTROLS Figure 2 1 POWER Press the POWER button to switch the receiver to its Stand by mode The Stand by indicator No 2 over the power button will light up On the front panel press any of the input selector buttons No 11 to switch the receiver on From the remote control press the green Stand by button No 1 on remote control drawing to switch the unit on The display will light up indicating which input was selected the Stand by indicator will extinguish Pressing the POWER switch again will turn the unit OFF completely The NAD T 751 receiver uses a memory back up system to store surround sound trim settings and Preset station information for the tuner section This in
16. versa Press this button again to switch the unit on from Stand by the last selected source will be indicated in the display 2 SLEEP Press SLEEP to make the T 751 automatically switch off after a preset number of minutes Pressing the SLEEP button once will set the sleep time to 90 minutes after which the T 751 will automatically switch off into Standby mode Sleep mode is shown on the Display Panel To adjust the Sleep Delay press the SLEEP button each consecutive press will reduce the sleep time in 30 minute increments as shown in the Display Panel To cancel the Sleep mode continue pressing the SLEEP button until the sleep time returns to 0 minutes Pressing the POWER on the front panel No 1 or STAND BY but ton will also cancel the Sleep mode 3 MUTE Press the MUTE button to temporarily switch off the NAD 15 sound to the speakers headphones mode is indicated by MUTING flashing in red in the dis play area Press MUTE again to restore sound Mute does not affect recordings made using the Tape out puts but will affect the signal going to the Audio Pre outs NOTE When the unit is in mute mode any adjustment of the VOLUME CONTROL on the front panel No 9 will release the muting i e the original volume level will be resumed 4 MASTER VOLUME Master Volume A or V respectively increases or decreases the volume setting for all speakers The display panel will indicate the level set The
17. ENCE REGULATIONS OF THE CANADIAN DEPARTMENT OF COMMUNICATIONS LE PRESENT APPAREIL NUMVERIQUE N EMENT PAS DE BRUITS RADIOELECTRIQUES DEPASSANT LES LIMITES APPLICABLES AUX APPAREILS NUMERIQUES DE LA CALSSE B PRESCRITES DANS LE REGLEMENT SUR LE BROUILLAGE RADIO ELECTRIQUE EDICTE PAR LE MINISTERE DES COMMU NICATIONS DU CANADA WARNING INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED AVOID EXPOSURE TO BEAM VORSICHT UNSICHTBARE LASERTRAHLUNG TRITT AUS WENN DECKEL GE FFNET UND WENN SICHERHEIT SVERRIEGELUNG UBERBRUCKT IST NICHT DEM STRAHL AUSSETZEN ADVARSEL USYNLIG LASERSTRALING VED ABNING NAR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION UNDGA UDSATTELSE FOR STRALING ADVARSEL USYNLIG LASERSTRALING NAR DEKSEL APNES OG SIKKERHEDSLAS BRYTES UNNGA EKSPONERING FOR STRALEN VARING OSYNLING LASERSTRALNING NAR DENNA DEL AR OPPNAD OCH SPARRAR AR URKOPPLADE STRALEN AR FARLIG VAR O AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTINA NAKTMATONTA LASERS TEILYLLE ALA KAISO S TEESEEN Manufactured under license from Dolby Laboratories Dolby Pro Logic and the Double D symbol are trade marks of Dolby Laboratories Confidential unpublished works 1992 1997 Dolby Laboratories Inc All rights reserved REAR PANEL CONNECTIONS Figure 1 SZ L AL1 SOINOH19113 AVN 000
18. No 6 is linked to the Video 2 input Select Video 2 to hear a source con nected to Digital Input 2 VIDEO 3 amp VIDEO 4 AUDIO Connections for the audio recording and playback to a VCR or other video recorder Using twin RCA to RCA leads connect to the left and right Audio Out of the VCR to the VIDEO 3 or VIDEO 4 IN connectors for playback Connect the left and right Audio In of the VCR to the VIDEO 3 or VIDEO 4 OUT connectors for recording Using a single RCA to RCA Video Composite lead or S Video lead also connect the video output of the VCR to Video In only Video Composite for Video 4 for Video playback Connect the Video Input of the VCR to Video Out of the NAD T 751 receiver for recording of video signals Refer also to the description of S Video and Video Composite above in this section 6 DIGITAL AUDIO INPUTS The T 751 has three digital audio inputs to allow for connection of DVD CD or other digital sources Digital Audio Input 1 allows for connection of a digi tal source with an Optical output Use a cable termi nated with a TOS Link connector This digital input is linked to the Video 1 input Digital Audio Inputs 2 amp 3 allow for connection of a digital source with a Coaxial digital output Use a cable with the right impedance specifically designed for the transfer of digital signals These digital inputs are linked respectively to VIDEO INPUT 2 and VIDEO INPUT 3 7 AUDIO PRE OUTS SUBWOOFE
19. R OUT AUDIO PRE OUTS The NAD T 751 receiver has five power amplifiers built in to power all the speakers connected to it Left Right Center Left Surround Right Surround It is also possible to use the T 751 as a pre amplifier to drive external power amplifiers This way you use all the control functions the T 751 provides such as input select surround mode volume tone controls etc but the external power amplifier actually powers the speaker connected to it instead of the T 751 s integrated power amplifier for that channel Connect the RCA to RCA leads from the Front left and Right Center and or Surround Left and Right Audio pre out connectors to the external amplifiers Connect speakers to the external amplifiers NOTES Never connect the T 751 s speaker outputs and the speaker outputs of an external amplifier to the same speakers When headphones are inserted the signals from all audio pre out outputs will be muted Before making any connections check that the T 751 and the power amplifiers it will be connected to are switched off With volume turned down to a low level switch power on only after all connections have been made SUBWOOFER OUT Unlike for the full range five channels as described above there is no power amplifier built in for an addi tional subwoofer The Subwoofer pre out allows for connection to a sub bass speaker system with its own external or integrated power amplifier active subwoofers
20. RE ELECTRIC SHOCK OR OTHER HAZARDS ATTENTION POUR VITER LES CHOC ELECTRIQUES INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPON DANTE DE LA PRISE ET POUSSER JUSQU AU FOND CAUTION TO PREVENT ELECTRIC SHOCK MATCH WIDE BLADE OF PLUG TO WIDE SLOT FULLY INSERT If an indoor antenna is used either built into the set or installed separately never allow any part of the antenna to touch the metal parts of other electrical appliances such as a lamp TV set etc CAUTION POWER LINES Any outdoor antenna must be located away from all power lines OUTDOOR ANTENNA GROUNDING If an outside antenna is connected to your tuner or tuner preamplifier be sure the antenna system is grounded so as to provide some protection against volt age surges and built up static charges Section 810 of the National Electrical Code ANSI NFPA No 70 1984 provides information with respect to proper grounding of the mast and supporting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna dis charge unit connection to grounding electrodes and requirements for the grounding electrode a Use No 10 AWG 5 3mm2 copper No 8 AWG 8 4mm2 aluminium No 17 AWG 1 0mm2 copper clad steel or bronze wire or larger as a ground wire b Secure antenna lead in and ground wires to house with stand off insulators spaced from 4 6 feet 1 22 1 83 m apart c Mount antenna dischar
21. TE The channel delay option is not available in DTS surround mode To set the center channel delay time Call up the SETUP menu of the On Screen Display Fig 7 Select the CHANNEL DELAYS menu Fig 10 Choose CENTER and select the desired delay time 1 2 3 4 or 5ms Measure the distance from the listening position to the center speaker dC and to one of the front speakers dFL or dFR Subtract the center channel distance from the front L or R channel distance For example if the front speakers are 12 feet 3 7 m from the listening position and the center speaker is 10 feet 3 0 m the difference is 2 feet 0 6 m For this example the center channel delay is set to 2 mil liseconds or ms The T 751 can delay the center channel output up to 5 milliseconds and thus compensates for center channel speakers that are up to 5 feet 1 5 m closer to the listening position than the front left and right speakers NOTES In rare system setups the center channel speaker is actually further away than the front left and right speakers In these cases set the center channel delay to OmS The center channel delay time adjust ment is only available in Dolby Digital surround mode To set the rear channel delay time Use the A or V cursor button No 7 to highlight the REAR e Scroll the preset delay time options by lt and cursor buttons Measure the distance from the listening p
22. TEST button again to leave or cancel the Test mode any changes will be memorized automati cally The loudspeaker levels can also be individually adjusted with the OSD setup menu Call up the SETUP menu of the On Screen Display Fig 7 Select the channel for which you wish to adjust and set the level so that it matches the other speakers For best results it is best to start with the Left channel set at OdB and to match the other speakers to it Normally if the Right speaker is located at the same distance from the listening position to the Left speak er it should be set at the same level as the Left speaker NOTE If no level adjustments were made press TEST again to return to the selected source Any changes in the Channel Balance Setting under the test mode will be memorized automatically LFE Low Frequency Effects with a Dolby Digital source the subwoofer channel can be set from 10dB to 10dB The Delay time for the Surround speakers also needs to be correctly set for your normal listening position Refer to the section Channel Delay in this chapter for more information 12V TRIGGER OUT This output allows to remotely switch on or off ancillary equipment such as a tuner power amplifier etc which are also equipped with a 12V trigger input This can also be an AC outlet power strip equipped with a 12V trigger input The 12V trigger output is activated whenever the unit is in switched to normal operati
23. TUNER NOISE HISS ON AM AND FM DISTORTION ON FM WHISTLES OR BUZZES ON FM amp AM WHISTLES OR BUZZES ON AM NO RDS NAME PS Power AC lead unplugged or power not switched on Tape Monitor selected Mute on Speaker not properly connected or damaged Input lead disconnected or damaged In Setup OFF for surround speaker selected No surround mode selected Mono sound source Speakers not properly connected Surround volume level too low In Setup OFF for center speaker selected Speaker not connected properly Center volume level set too low Source not connected using digital inputs Speakers wired out of phase Batteries flat or incorrectly inserted IR transmitter or receiver windows obstructed IR receiver in direct sun or very bright ambient light Antenna leads incorrectly connected Station not selected or weak signal with FM Mute on Weak signal Multi path signals or interference from another station Interference from other electrical sources computers games consoles Interference from fluorescent lighting or electrical motors Station signal too weak Station not transmitting RDS data Check if AC lead is plugged in and power switched on De select Tape Monitor mode Switch off Mute Check connections and speakers Check leads and connections Select appropriate Surround mode large or small Select a Surround Mode Test system with Stereo or Dolby Surround
24. To faithfully reproduce these low frequencies you can use a spe cially designed low frequency loudspeaker with its own built in amplifier active subwoofer Because it is difficult to hear which direction very low frequencies are coming from you only normally need one sub woofer and this can be placed virtually anywhere in the room The Subwoofer output of the T 751 is designed specifically to drive a subwoofer system NAD 19 Dolby Digital uses a dedicated Low Frequency Effects LFE channel If a subwoofer has been selected the LFE channel will be fed to the sub woofer output Channel Delays For the best surround sound performance it is important that sound from all speakers reach the lis tener s ears at the same time Because the sur round rear speakers are usually closer to the listener than the front speakers there is tendency for the ear to localise sounds to the rear because the ear takes most notice of the sounds that arrive at the head first Similarly the center speaker is often closer to the lis tener than the front left and right speakers To com pensate for this the T 751 can slightly delay the audio sent to the center and rear closer speakers In this way when playing Dolby Digital or Dolby Pro logic soundtracks the sound from all speakers arrives uniformly at the listening position as intended by the film s producer Each millisecond corresponds approximately with 1 foot or 30 5 centimeters NO
25. Volume control does not affect recordings made using the Tape and Video or Tape Video 3 and Video 4 out puts but will affect the signal going to the Pre amp output Audio Pre Out 5 CURSOR A V 4 AND gt AND ENTER The four Cursor buttons are used to navigate the cursor when using the menus with the On Screen Display and the ENTER is used to confirm the choice Press A to move cursor up V to move cursor down 4 to move cursor left gt to move cursor right Then press ENTER to access With the four cursor buttons the relative volume level trims for center left and right surround channels can be adjusted Press the CHANNEL button No 7 to select the channel for which you wish to adjust the level Refer also to chapter On Screen Display and Setting Up the Surround Sound System for more information 6 TEST Pressing the TEST button engages the Test signal generator to allow for adjustment of all speaker lev els so that each channel can be adjusted for equal loudness at your listening position The test signal scrolls automatically with 5 second intervals from Front Left Center Front Right Rear Right Rear Left to subwoofer in continuous cycles If an adjustment in setting is made for one of the speakers scrolling will stop until 5 seconds after the adjustment was made Both display panel and OSD show which speaker is being fed with the test signal Use the cursor 4 and gt button to respectively decrease or increa
26. access The and button are used to navigate and select an option indicated by highlighting the available option the 4 or gt button to change a setting from the highlighted section and ENTER to choose the desired option Otherwise highlight EXIT and press ENTER to leave The OSD menu are at maximum two layers deep this means that from the main menu layer 1 you can select a sub menu layer 2 The other sub menus available are 1 INPUT SETTINGS Highlight INPUT SETTINGS in the SETUP menu and press ENTER on the remote You will see a screen similar to the following Fig 8 INPUT SETTINGS AUDIO TUNER VIDEO VIDEO 1 MODE DOLBY DIGITAL DYNAMIC RANGE 100 DO NOT SAVE amp EXIT SAVE amp EXIT The available choices in each of the fields can be selected with the lt or gt button on the remote con firm the choice with ENTER button AUDIO identifies the selected audio input TUNER CD TAPE MONITOR and EXT 5 1 VIDEO identifies the selected video input VIDEO 1 VIDEO 2 VIDEO 3 VIDEO 4 and VIDEO 5 MODE indicates the operating mode of the selected input DOLBY DIGITAL DTS PRO LOGIC EARS STEREO DYNAMIC RANGE indicates the dynamic range currently selected 100 75 50 and 25 in Dolby Digital mode only or N A for the other modes Highlight SAVE amp EXIT and press ENTER to save the altered settings and return to the SETUP menu Otherwise select DO NOT SAVE
27. aker will allow the dialogue to cut through even the biggest sound effects and musical scores Having the sound spread across three front speakers also stabilizes the stereo image making the usable listening area much bigger For best results you should consider using a cen ter speaker Ideally it should be the same type as the left and right speakers Choose SURROUND and select one of the three modes available Small Large Off Installing surround speakers will greatly enhance the surround experience as these add considerably to the overall ambience Dolby Pro Logic encoded material is deliberately limited in dynamic range and frequency bandwidth for the surround channel and thus only requires speak ers of far lesser specification compared to the front channels Dolby Digital however is a full range sys tem with two independent surround channels and with dynamics equal to that of the front channels For this reason it is advisable to choose loudspeakers which are similar in power handling and performance capability to those of the front channels For best results the Surround loudspeakers should not beam the sound directly at the listener One way of achieving this is to use dipole Surround speakers which aim the sound down the walls rather than directly into the room Many film soundtracks rely heavily on very low fre quency sound effects which are difficult for normal or smaller hi fi speakers to reproduce
28. amp EXIT to leave without saving any changes 2 CHANNEL BALANCE Highlight CHANNEL BALANCE in the SETUP menu and press ENTER on the remote You will see a screen similar to the following Fig 9 NAD 17 NAD 18 CHANNEL BALANCE LEFT OdB CENTER 0dB RIGHT 0dB REAR L 0dB REAR R OdB SUB OdB DO NOT SAVE amp EXIT SAVE amp EXIT The T 751 allows the volume of each speaker to be individually trimmed so that none of the speakers dominates in playback and detracts from the sur round illusion Highlight the required speaker and adjust with cursor to decrease and gt cursor to increase the level Each speaker can be adjusted within a 10 to 10dB range Highlight SAVE amp EXIT and press ENTER to save the settings and return to the SETUP menu NOTES The CHANNEL BALANCE menu in OSD can also be accessed directly with the CHANNEL and TEST buttons respectively No 7 and 6 on the remote for setting adjustment Refer also to chapter Remote Control 3 CHANNEL DELAYS Highlight CHANNEL DELAYS in the SETUP menu and press ENTER on the remote You will see a screen similar to the following Fig 10 CHANNEL DELAYS CENTER OmS REAR OmS DO NOT SAVE amp EXIT SAVE amp EXIT Use the 4 or gt cursor button to change the center channel delay time In Dolby Digital mode T 751 allows the following setting options CENTER REAR 0 1 2 3 4 amp 5ms 0 1 2 3 13
29. ance The volume and tone controls are operative for headphone listening Use a suitable adapter to connect headphones with other types of connectors such as 3 5mm stereo personal stereo jack plugs Inserting a headphone will automatically turn off all speakers and signals from the Audio Pre Out sock ets The sound from the EXT 5 1 CH input is not avail able on the headphones socket NOTES In the OSD menu Speaker settings be sure to have selected and adjusted a preset with MAIN SPEAKERS set to LARGE If set to SMALL bass reponse will be limited Refer also to Chapter Screen Display OSD for more information Listening at high levels can damage your hearing VIDEO 5 INPUT For easy and temporary connection you can con nect a camcorder playback only or video game con sole If the game console or camcorder is mono con nect the audio lead to the R Right audio socket 11 AUDIO amp VIDEO INPUT SELECTORS amp SURROUND MODE These buttons select the active video and audio input to the T 751 and the audio signal sent to the loudspeakers Tape Video 3 amp 4 and TV monitor out puts Video inputs 1 2 and 3 also select respectively the Digital Inputs 1 2 and 3 The name of the Input and Surround Mode will be shown in the Display Panel VIDEO 1 Video 1 selects the signal from a TV Satellite Cable receiver or DVD player connected to VIDEO 1 as the active input VIDEO 1 is shown in t
30. e available surround sound modes With any of the Digital Inputs 1 2 amp 3 press Video 1 2 or 3 respectively to select the T 751 automati cally recognizes if the selected source carries a Dolby Digital or DTS signal When no Dolby Digital or DTS signal is available the Surround Mode buttons scrolls through the other available surround sound modes Stereo Pro Logic Ears Stereo etc With either Dolby Digital or DTS surround mode engaged the Dolby Pro Logic and Ears surround modes cannot be selected Dolby Digital and DTS has six independent chan nels available in total Left Center Right Surround left Surround Right and an Effects Channel Subwoofer The Dolby Digital signal allows for several channel configurations DTS digital surround is an Encode Decode system that currently delivers six discrete channels 5 1 of Master Quality up to 24 bit audio Dolby Pro Logic decodes the center and surround sound signals embedded in stereo movie sound tracks from e g video Laser Disc or TV To decode correctly the source must be a Dolby Surround or Dolby Stereo soundtrack In the EARS Enhanced Ambiance Retrieval System Surround Mode a realistic level of ambience of surround sound is added to a normal stereo source such as a CD or FM radio NOTES Dolby Digital or DTS are only available as a Surround Mode if the source is either Dolby Digital or DTS and a Digital Audio input is
31. es or radiators may interfere with reception NOTE When reception is not satisfactory using the sup plied AM loop antenna alone connection of an exter nal antenna is recommended Do not connect any thing other than a loop antenna to the AM ANTENNA terminal Do not remove the AM loop antenna The antenna cable to the loop antenna must not exceed 3 meters FM ANTENNA A ribbon wire FM antenna is included and should be connected to the FM connector at the rear of the unit Fig 4 using the balun adapter supplied The ribbon aerial should be mounted on a vertical surface and placed so that it forms T Experiment with placement of the antenna to find the position that gives the best signal strength and lowest background noise An inadequate FM signal normally results in high levels of hiss especially in stereo and interference from external electrical sources In areas of poor FM reception the tuner section s performance can be improved by using an externally mounted FM antenna A qualified aerial installer will be able to advise and fit a recommended aerial for your reception conditions 2 AM STEPPING FREQUENCY Worldwide models are equipped with a switch that controls the AM band tuning steps Please set this switch to match the AM band tuning step frequency as below 120V version 10kHz 230V version 9kHz 3 TAPE 1 amp CD INPUT TAPE 1 Connections for analogue recording and playback to an a
32. flash once 4 FM MUTE MONO This button combines two functions it switches the tuner from Stereo to Mono and disengages the mut ing circuitry at the same time The muting circuit will mute the tuner in between radio stations when searching or tuning This way the tuning noise is avoided Very weak radio station signals however may be suppressed by the muting circuit if such a very weak station is in stereo it will have a high level of back ground hiss Switching to Mono Mode and disengag ing the muting circuit by depressing the FM MUTE MONO bution will allow the station to be heard and will cancel most or all of this background noise In normal operation the mute circuit is engaged the display indicates FM MUTE Press the FM MUTE MONO button to disengage the muting circuit and switch from stereo to mono reception FM MUTE will extinguish in the display Also STEREO will extinguish if a stereo broadcast was received Press the FM MUTE MONO switch again to return to Auto Stereo FM operation In combination with the MEMORY button No 5 a preset number can be emptied Refer to the sepa rate chapter Storing and Recalling Presets for more information 5 MEMORY The MEMORY button is used to store stations into the Preset Memory 1 30 Presets on FM 1 10 Presets on AM used in conjunction with the DOWN UP No 7 buttons on the front panel In com bination with the FM MUTE MONO button No 4 a prese
33. formation is retained for several weeks even the unit is switched off completely or unplugged REMOTE CONTROL STAND BY button green No 1 on remote control drawing Press this button to switch the unit from operating to the Stand by mode and vice versa Press this but ton again to switch to unit on from Stand by the last selected source will be indicated in the display NOTE Stand by mode is indicated by the Stand by indica tor No 2 just over the green POWER button on the front panel No 1 In Stand by mode the T 751 uses very little power However it is recommended that you switch the unit totally off if it is not going to be used for more than a couple of days Switch off completely by pressing the POWER button on the front panel No 1 all lights will extinguish Press this button to switch the unit on To switch the unit off press this button again 2 STAND BY This green LED will light up when the receiver is switched On but in Stand by mode Refer to section 1 in this chapter for more information The LED will also light up when the receiver receives a remote control command from the sup plied handset 3 DISPLAY The T 751 supports RDS PS and RDS RT With stations carrying RDS information RDS will light up in the display panel and the station s RDS name is automatically displayed RDS PS Some radio stations which support RDS also transmit additional information known as Radio Text
34. ge unit as close as possible to where lead in enters house d Use jumper wire not smaller than No 6 AWG 13 3mm2 copper or the equiva lent when a separate antenna grounding electrode is used see NEC Section 810 21 j EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE INSTRUCTIONS CONTAINED IN ARTICLE 810 RADIO AND TELEVI SION EQUIPMENT POWER LINES SERVICE ENTRANCE CONDUCTORS jf STANDOFF INSULATORS b MAST SERVICE ANTENNA ENTRANCE LEAD IN WIRE EQUIPMENT ANTENNA DISCHARGE UNIT c TO EXTERNAL ANTENNA TERMINALS OF RADIO RECEIVER POWER SERVICE GROUNDING ELECTAODE SYSTEM Interior metal water pipe GROUND WIRE ab GROUND CLAMPS BONDING JUMPER OPTIONAL ANTENNA GROUNDING ELECTRODE DRIVEN 8 FEET 2 44 Mi INTO THE EARTH IF REQUIRED BY LOCAL CODES SEE NEC SECTION 810 21 1 NOTE TO CATV SYSTEM INSTALLER This reminder is provided to call the CATV system installer s attention to Article 820 22 of the National Electrical Code that provides guidelines for proper grounding and in particular specifies that the ground cable ground shall be con nected to the grounding system of the building as close to the point of cable entry as practical SAFETY WARNING CLASS 1 LASER PRODUCT LUOKAN 1 LASERPLAITE KLASS 1 LASERAPPARAT THIS DIGITAL APPARATUS DOES NOT EXCEED THE CLASS B LIMITS FOR RADIO NOISE EMISSIONS FROM DIGITAL APPARA TUS AS SET OUT IN THE RADIO INTERFER
35. hapter Storing and Recalling Presets for more information 8 VFL DISPLAY Vacuum Fluorescent Display The display area will show all vital information when the unit is operational 9 VOLUME The Volume control adjusts the overall loudness of the signals being fed to the loudspeakers Unlike con ventional controls the T 751 s volume control doesn t have a start of end position Volume can also be adjusted from the remote control handset using the MASTER VOLUME Up or Down buttons No 4 in remote control drawing The Volume control does not affect recordings made using the Tape Video 3 and Video 4 outputs but will affect the signal going to the Pre amp output Audio Pre Out The volume level is indicated in the display panel when it is being adjusted After three seconds the display defaults to its previous status Volume setting can range from to 18 On the remote control handset press the MUTE button No 3 to temporarily switch off the sound to the speakers and headphones Mute mode is indicat ed by MUTING flashing in red in the display area Press MUTE again to restore sound Mute does not affect recordings made using the Tape Video 3 and Video 4 outputs but will affect the signal going to the Pre amp output Audio Pre Out 10 HEADPHONE SOCKET amp VIDEO 5 INPUT HEADPHONE SOCKET A 1 4 stereo jack socket is supplied for headphone listening and will work with conventional headphones of any imped
36. he Display Panel when selected The Digital Input 1 is linked to the Video 1 input marked Digital In on back panel No 6 Digital Input 1 allows for connection of a digital source with an Optical digital output Whenever Video 1 is selected Digital Input 1 will also be selected in the display the DIGITAL 1 indicator will start to blink If a digital audio signal is detected the DIGITAL 1 indicator will stop blinking and remain lit If no digital audio signal is detected DIGITAL 1 indicator will cease blinking and extinguish VIDEO 2 Video 2 selects the signal from a TV Satellite Cable receiver or DVD player connected to VIDEO 2 as the active input VIDEO 2 is shown in the Display Panel when selected The Digital Input 2 is linked to the Video 2 Input marked Digital In on back panel No 6 Digital Input 2 allows for connection of a digital source with a Coaxial digital output Whenever Video 2 is selected Digital Input 2 will also be selected in the display the DIGITAL 2 indicator will start to blink If a digital audio signal is detected the DIGITAL 2 indicator will stop blinking and remain lit If no digital audio signal is detected DIGITAL 2 indicator will cease blinking and extinguish VIDEO 3 amp VIDEO 4 Video 3 amp 4 select the signal from a TV Satellite Cable receiver DVD player or VCR con nected to VIDEO 3 or VIDEO 4 as the active input VIDEO 3 or VIDEO 4 is shown in the Display Panel
37. ipped Deleting a stored Preset You can empty a Preset by deleting the stored information Select the Preset to be emptied Press the MEMORY button No 5 followed by the FM MUTE MONO button No 4 The Preset will then be deleted and appears as the Preset num ber You can also store a new station into a used Preset by simply going through the Preset storing process and placing a new station over the existing one REMOTE CONTROL Figure 3 Apart from all the key functions the T 751 s Remote Control handset also gives access to func tions not available on the front panel It also has addi tional controls to remotely operate NAD Cassette and CD machines It will operate up to a distance of 16ft 5m Alkaline batteries are recommended for maximum operating life Two AAA R 03 batteries should be fit ted in the battery compartment at the rear of the Remote Control handset When replacing batteries check that they have been put in the right way round as indicated on the base of the battery compartment The EXT 5 1 VIDEO 1 TO 5 MON AM FM and CD Input selector buttons and PRESET TUNE DOWN UP and DISPLAY buttons perform the same function as those on the front panel of the T 751 There are a few differences and extra functions with the remote control handset however numbers refer to Fig 3 1 STAND BY Press this green button to switch the unit from operating to the Stand by mode and vice
38. lities a hard distorted sound can be heard on very loud sounds This is caused by the amplifier cutting off or hard clipping the peaks of sound that it was not designed to reproduce The NAD Soft Clipping circuit gently limits the output of the system to minimize audible distortion if the ampli fier is overdriven If your listening involves moderate power levels you may leave the Soft Clipping switch off If you are like ly to play at high levels that exceed the amplifier s power capability then switch Soft Clipping on 11 NAD LINK IN OUT The NAD Link connector is used to pass com mands from other units fitted with NAD Link connec tors This allows centralized control of a complete system and also allows some of the basic functions of other NAD components such as a CD player or cassette deck also equipped with NAD Link to be controlled with the receiver s remote control To func tion with such other units connect the T 751 s NAD Link Out to the NAD Link In on the other unit NAD Link connectors can be daisy chained IN to OUT so that a whole system can be controlled from the remote control facilities of one unit 12 SWITCHED POWER OUTLETS 120V North American versions only The AC power cords of other stereo components such as a CD player may be plugged into these accessory outlets Components plugged into the outlets will be switched on and off as the T 751 is switched from stand by or off to on and vice
39. loudness levels of each speaker Before adjusting the channel balance level make sure the master vol ume is turned down to a normal listening level Pressing the TEST button engages the Test signal generator to allow for adjustment of all speaker lev els so that each channel can be adjusted for equal loudness at your listening position The test signal scrolls automatically with 5 second intervals from Left Center Right Rear Right Rear Left to sub woofer in continuous cycles If an adjustment in set ting is made for one of the speakers scrolling will stop until 5 seconds after the adjustment was made Both display panel and OSD show which speaker is being fed with the test signal Use the cursor 4 and gt button to respectively increase or decrease the level for the current speaker NOTE There is no output in the Subwoofer during noise sequencer operation therefore it is difficult to adjust the level in test mode The Subwoofer level can be adjusted in the OSD setup menu with musical input The Channel Balance for each speaker can be adjusted in 1dB increments Continue to calibrate the level for each speaker until equal loudness is achieved at your listening position A more accurate adjustment can be made using a sound level meter if available Set the meter to Slow and C weighted modes and re check the settings with the meter placed in several different positions in the general lis tening area Press the
40. material Check speakers and connections Increase surround volume level Select appropriate Center mode large or small Check speaker and connection Increase center volume level Connect digital output of source to T 751 Check connections to all speakers in the system Check or replace batteries Remove obstruction Place unit away from direct sun reduce amount of ambient light Check antenna connections to receiver Re tune or switch off FM Mute Check station tuning Adjust or replace antenna Check station tuning Adjust or replace antenna Check station tuning Switch off or move the source of the electrical noise Check station tuning Adjust or replace AM antenna Check station tuning Adjust or replace antenna No remedy NAD ELECTRONICS NEW ACOUSTIC DIMENSION LONDON 2000 T 751 I M PRINTED IN THE PEOPLE S REPUBLIC OF CHINA P N 4301 4108 0
41. n are redirected to the main speakers T 751 is pre programmed with 3 factory presets that are suitable for most typical installations Preset 1 Main LARGE Center LARGE Surround LARGE Subwoofer ON In this mode all speaker channels are large i e full range and the home theater system has a sub woofer This preset is particularly useful for large rooms Preset 2 Main LARGE Center SMALL Surround SMALL Subwoofer OFF This preset is necessary for a home theater system that does not have a subwoofer The bass frequen cies from the center and surround channels are redi rected to the main speakers Preset 3 Main SMALL Center SMALL Surround SMALL Subwoofer ON This preset is ideal for those systems using 5 small speakers combined with a subwoofer The bass fre quencies from each of these 5 channels are redirect ed to the subwoofer NOTES Regardless of the available main speakers select Preset 2 when subwoofer is not available to redirect bass frequencies to the main speakers SETTING UP THE SURROUND SYSTEM To obtain the best results in any of the Surround Modes it is important that the T 751 is carefully set up Performing the complete setup is done using the On Screen Display menus It is therefore recom mended you connect your Television or monitor to the T 751 monitor output Refer to the chapter On Screen Display OSD on how to access the SETUP Menu of the On Screen
42. ndent on the select ed video input VIDEO 1 VIDEO 2 VIDEO 3 VIDEO 4 VIDEO 5 However when one of the audio only sources is selected FM AM CD Tape Monitor or Ext 5 1 the last selected video signal from one of the video inputs will be present on these outputs This way you can watch a DVD player or video whilst listening to the CD player The display indicates which video signal is routed to the MONITOR OUT sockets No 8 on back panel 12 BASS amp TREBLE CONTROLS The T 751 is fitted with BASS and TREBLE tone controls to adjust the overall tonality of your system The 12 o clock position is flat with no boost or cut and a detent indicates this position Rotate the control clockwise to increase the amount of Bass or Treble Rotate the control anti clockwise to decrease the amount of Bass or Treble These controls affect the Left and Right Front speak ers The Tone controls do not affect recordings made using the Tape or Video line outputs but will affect the signal going to the Pre amp outputs Audio Pre Out STORING AND RECALLING PRESETS To store a Preset Tune to the radio station you wish to enter into a Preset refer to chapter Front Panel Controls sec tions 6 and 7 If the station is transmitting RDS infor mation the RDS indicator will light up and station ini tials will be shown in the Display Panel If a non RDS station is found then just the frequency will be shown To store that station
43. o reproduce a source s full dynamic range the difference between very loud and very soft sounds it may occasionally be desir able to reduce the dynamic range For example when playing a movie late at night loud explosions might wake sleeping family members Simply turning the volume control down would probably make a whisper in the next scene inaudible The DYN R but ton solves this dilemma by progressively lowering the volume of loud peaks while increasing the level of softer sounds 9 MODE The MODE button scrolls through the available sur round sound modes The button functions in the same way as the SURROUND MODE button on the T 751 front panel No 11 on front panel drawing The selected Surround mode is permanently indi cated in the display area and is also shown for 3 sec onds in the alpha numeric display section 10 CD PLAYER CONTROL for use with NAD CD Players Il engages Pause B engages Stop Il engages Play or toggles between Play and Pause or engages Track skip press once to go to the next track or to return to start of current or previ ous track DISC Go to next disc for NAD CD changers 11 CASSETTE CONTROL For use with single DECK or double transport A and NAD Cassette Decks 4 or gt engages Forward Play or Reverse Play il Record Pause Press to put cassette deck into record pause Press Play to start recording E Stops Play or Recording lt lt
44. onal mode from Stand by or Off For switching Stand by Power On of an external component through the T 751 connect the12V trigger output of the 751 to the remote components DC input jack The plug required is a standard 3 5mm Mini Jack plug The tip is the live or con nection the shaft of the input jack is the 12V trigger or ground connection NOTE Check the specifications of the Trigger input termi nal on the other components to ensure these are compatible with the T 751 s 12V trigger output NAD components equipped with 12V input triggers are fully compatible with the T 751 s 12V output trigger The T 751 s 12V trigger output voltage is 12V DC The total maximum current must not exceed 200mA Typically NAD 12V input triggers draw less than 10mA of current Before making any connections to any 12V trigger input or output make sure all components are dis connected from the AC mains Failure to observe the above may result in damage to the T 751 or any ancillary components attached to it If in doubt over the connections installation and operation of the 12V trigger output consult your NAD dealer TROUBLESHOOTING PROBLEM CAUSE SOLUTION NO SOUND NO SOUND ON ONE CHANNEL NO SOUND ON SURROUND CHANNELS NO SOUND ON CENTER CHANNEL DOLBY DIGITAL OR DTS AUTO DETECTION FUNCTION DOES NOT WORK WEAK BASS DIFFUSE STEREO IMAGE REMOTE CONTROL HANDSET NOT WORKING NO SOUND WITH
45. osition to either the left or right rear speaker dLS or dRS Subtract the rear speaker distance from the front speaker distance dFL or dFR The resulting dis tance is equivalent to the delay in milliseconds for the rear delay setting For example if your rear speaker distance is 6 feet 1 8 m and the front distance is 12 feet 3 7 m the correct rear channel delay setting is 6 milliseconds Again set the rear channel delay to OmS if the rear channels are further from the listening position than the front speakers In Dolby Digital surround mode the rear channel delay time can be set from Oms to 15ms with 1ms increments In Dolby Pro logic surround mode the rear channel delay time can be set from 15ms to 30ms and 1ms per step In DTS surround mode the channel delay time cannot be adjusted When both delays have been entered choose SAVE amp EXIT to save the settings and return to the Main Menu Channel Balance The output levels of each of the speakers connect ed to the T 751 may need to be adjusted so that there is an even balance of sound from all the speakers in the system If for instance the relative volume level to the Left and Right speakers and the center speak er is set too low most of dialogue may be difficult to follow If on the other hand it is set too loud the over all balance will sound unnatural To adjust the channel balance the T 751 is equipped with a TEST button No 6 to help assess the
46. se the level for the current speaker Press the TEST button again to leave or cancel the Test mode any changes will be memorized automatically Refer also to chapter On Screen Display and Setting Up the Surround Sound System for more information 7 CHANNEL SELECT Although the T 751 is correctly set up it may some times be desirable to make minor adjustments to suit particular software Pressing the CHANNEL button allows for direct adjustment of Center Rear and Subwoofer levels Press the CHANNEL button to scroll to the next speaker Both display panel and OSD show which speaker can be adjusted Use the cursor and gt button to respectively decrease or increase the level for the current speaker Pressing the CHANNEL button also gives access to CHANNEL BALANCE in the OSD directly CENTER REARR amp L SUB OFF Refer also to the chapter Setting Up the Surround Sound System for more information 8 DYNAMIC RANGE The DYN R button which can be used only in combination with a Dolby Digital source incremental ly reduces the audio track s dynamic range in four steps 100 7596 50 and 25 to allow for com fortable listening under a variety of conditions The normal or default position is 10096 To adjust the dynamic range each consecutive press of the DYN R button will reduce the value in 2596 increments as shown in the alpha numeric dis play section NOTE Although we usually prefer t
47. sockets No 8 for a television or video projector The Video 1 2 and 3 inputs also have the option of a Video Composite connection using the yellow RCA socket or an S Video connection using the Mini Din connector The S Video standard allows for higher quality video signal transfer when compared to the Video Composite standard If your video components have an S Video connector use dedicated S Video leads to connect them to the T 751 in the same way as described with the Video composite equivalents A video signal fed to an S Video input socket will be available on both the S Video Monitor Out and Video composite Monitor Out VIDEO 1 amp VIDEO 2 AUDIO Inputs for the audio playback and video signal from a video device such as a stereo TV DVD player satellite cable TV receiver or a Laser Disc Using twin RCA to RCA leads connect to the left and right Audio Out of the video device to these inputs Using a single RCA to RCA lead Video Composite or S Video lead also connect the video output of the video device refer also to the description of S Video and Video Composite in section No 5 of this chapter VIDEO 1 amp VIDEO 2 can be used for video playback only Use VIDEO 3 or VIDEO 4 if you want to connect a VCR for recording and playback through the T 751 The optical Digital Input 1 No 6 is linked to the Video 1 input Select Video 1 to hear a source con nected to Digital Input 1 The coaxial Digital Input 2
48. t number can be emptied When Memory is active the Preset number flashes and the red MEM ORY indicator is shown in the Display Panel If no other button is pressed within 10 seconds MEMO RY will stop flashing and the receiver will default to its previous state Refer to the separate chapter Storing and recalling Presets for more information 6 PRESET TUNE The PRESET TUNE button toggles between the Preset and Tune mode When Preset mode is select ed PRESET lights up in the display area Up to 40 Presets either AM 10 Presets or FM 30 Presets can be stored Refer also to separate chapter Storing and Recalling Presets for more information DOWN UP The function of these buttons depends on the tun ing mode selected with the PRESET TUNE button No 6 The PRESET TUNE button toggles between the two operation modes a Preset mode indicated in the display area Press the down button to scroll to a lower number Preset press the up button to scroll to a higher Preset number This is a wrap around function so that going from the highest number Preset the tuner will go to the lowest Preset num ber or vice versa when tuning either up or down b Tune mode Press the 4 down gt up button for more than 1 2 second to engage auto matic tuning respectively up or down the frequency band The tuner will search automatically for
49. udio tape recorder of any type such as a cas sette reel reel DAT MD or DCC Using twin RCA to RCA leads connect to the left and right Audio Output of the tape machine to the 1 IN con nectors for playback Connect the left and right Audio Input of the tape machine to the TAPE 1 OUT con nectors for recording CD INPUT Input for CD player analogue audio signal or other line level signal source Use a twin RCA to RCA lead to connect the CD player s left and right Audio Outputs to this input 4 5 1 CHANNEL INPUTS Inputs for the multi channel audio signals from an external decoder such as an MPEG decoder or a DVD player with integrated decoder Use two twin RCA to RCA lead to connect the decoder s front left and right Audio Outputs to the Front left and right inputs and the decoder s Surround left and right out puts to the Surround left and right inputs Use a third twin RCA to RCA lead to connect the decoder s sub woofer output to the Subwoofer input and the decoder s Center channel output to the Center chan nel input Make sure you to follow color coding of the plugs to ensure that both Center and Subwoofer are connected correctly for instance use the red plugs at either end to connect the center channel and the white plugs for the subwoofer channel 5 VIDEO 1 VIDEO 4 AUDIO amp VIDEO Apart from the audio signal these inputs will also accept a video signal which will be routed to the Monitor Out
50. us damage to the unit Use only with a cart stand tripod bracket or table recommended by the man ufacturer or sold with the unit Any mounting of the device on a wall or ceiling should follow the manufacturer s instructions and should use a mounting accessory recommended by the manufacturer An appliance and cart combination should be moved with care Quick stops excessive force and uneven surfaces may cause the appliance and cart combi nation to overturn Read and follow all the safety and operating instructions before connecting or using this unit Retain this notice and the owner s manual for future reference All warnings on the unit and in it s operating instructions should be adhered to Do not use this unit near water for example near a bath tub washbowl kitchen sink laundry tub in a wet basement or near a swimming pool The unit should be installed so that its location or position does not interfere with its proper ventilation For example it should not be situated on a bed sofa rug or similar surface that may block the ventilation openings or placed in a built in installation such as a bookcase or cabinet that may impede the flow of air through its ventilation openings The unit should be situated from heat sources such as radiators heat registers stoves or other devices including amplifiers that produce heat The unit should be connected to a power supply outlet only of the voltage and frequency marked on its
51. when selected The Video 3 amp 4 inputs also have video and analogue audio outputs specifically for recording video devices The Digital Input 3 is linked to the Video 3 input marked Digital In on back panel No 6 Digital Input 3 allows for connection of a digital source with a Coaxial digital output Whenever Video 3 is selected Digital Input 3 will also be selected in the display the DIGITAL 3 indicator will start to blink If a digital audio signal is detected the DIGITAL 3 indicator will stop blinking and remain lit If no digital audio signal is detected DIGITAL 3 indicator will cease blinking and extinguish VIDEO 5 Selects the camcorder or video game console con nected to the Video 5 front panel inputs as the active input VIDEO 5 is shown in the Display Panel when selected NAD 13 5 1 Selects the multi channel output signal from the DVD player or external decoder source such as MPEG for instance connected to the 5 1 Ch input as the active input NOTE No Ext 5 1 audio signal is available from head phones socket the Tape Video 3 and Video 4 out puts when the Ext 5 1 input has been selected SURROUND MODE With the Surround Mode buttons the available sur round sound modes can be selected The selected Surround mode is permanently indicated in the dis play area and is also shown for 3 seconds in the large Star Burst section of the display The Surround Mode buttons scroll through th
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