NAD T 751751 User Manual

NAD  
T 751  
751  
GB  
• OWNER'S MANUAL  
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 INTERFERENCE 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 GEÖFFNET UND WENN SICHERHEITSVERRIEGELUNG  
ÜBERBRÜCKT IST. NICHT DEM STRAHL AUSSETZEN.  
ADVARSEL - USYNLIG LASERSTRÅLING VED ÅBNING, NÅR  
SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGÅ  
UDSÆTTELSE FOR STRÅLING.  
ADVARSEL - USYNLIG LASERSTRALING NÅR DEKSEL ÅPNES OG  
SIKKERHEDSLÅS BRYTES. UNNGÅ EKSPONERING FOR STRÅLEN.  
VARING - OSYNLING LASERSTRÅLNING NÄR DENNA DEL ÄR  
ÖPPNAD OCH SPÄRRAR ÄR URKOPPLADE. STRÅLEN ÄR FARLIG.  
VARO! - AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET  
ALTTINA NÄKTMÄTONTÄ LASERSÄTEILYLLE. ÄLÄ KAISO 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 Confidential unpublished works.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.  
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REAR PANEL CONNECTIONS (Figure 1.)  
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1
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5
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FRONT PANEL CONNECTIONS (Figure 2.)  
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REMOTE CONTROL  
(Figure 3.)  
(Figure 4.)  
1
2
3
4
6
7
8
5
9
(Figure 5.)  
10  
11  
(Figure 6.)  
1
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Batterij niet  
weggooien maar  
inleveren als KCA  
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SIMPLE T 751 SYSTEM (Figure A.)  
TV  
VIDEO  
STEREO AUDIO  
TAPE  
IN / OUT  
CD  
IN  
VCR  
IN / OUT  
SOPHISTICATED T 751 SYSTEM (Figure B.)  
AUDIO / GAMES  
TV  
IN  
VIDEO  
STEREO AUDIO  
SUBWOOFER  
TAPE  
IN / OUT  
CD  
IN  
VCR  
IN / OUT  
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THE OPTICAL DIGITAL INPUT 1 IS LINKED TO THE VIDEO 1 INPUT.  
THE COAXIAL DIGITAL INPUT 2 IS LINKED TO THE VIDEO 2 INPUT.  
VIDEO  
STEREO AUDIO  
COMPOSITE  
VIDEO OUT  
DIGITAL  
COAXIAL  
OUT  
DVD  
S VIDEO OUT  
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NAD T 751 SURROUND SOUND RECEIVER  
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FM ANTENNA  
NOTES ON INSTALLATION.  
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 a ‘T’.  
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.  
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.  
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.  
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.  
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  
For best performance, use quality speaker leads of  
16 gauge (1.5mm) thickness or more.  
3. TAPE 1 & CD INPUT  
If the unit is not going to be used for some time,  
disconnect the plug from the AC socket.  
TAPE 1  
Connections for analogue recording and playback  
to an audio 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 TAPE 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.  
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.  
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.  
REAR PANEL CONNECTIONS (Figure 1.)  
1. FM & AM ANTENNA  
4. 5.1 CHANNEL INPUTS  
AM ANTENNA  
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.  
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  
shelves 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.  
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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.  
5. VIDEO 1 - VIDEO 4 (AUDIO & VIDEO)  
Apart from the audio signal, these inputs will also  
accept a video signal which will be routed to the  
Monitor Out 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).  
Digital Audio Inputs 2 & 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.  
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.  
7. AUDIO PRE-OUTS / SUBWOOFER 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.  
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 & 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 & 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.  
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.  
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.  
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.  
The coaxial Digital Input 2 (No. 6) is linked to the  
Video 2 input. Select Video 2 to hear a source con-  
nected to Digital Input 2.  
VIDEO 3 & VIDEO 4 (AUDIO)  
SUBWOOFER OUT  
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.  
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).  
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.  
6. DIGITAL AUDIO INPUTS  
The T 751 has three digital audio inputs to allow for  
connection of DVD, CD or other digital sources:  
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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.  
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  
9. FRONT, CENTER & SURROUND SPEAKERS  
When any amplifier is driven beyond it’s power  
output capabilities, 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.  
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.  
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.  
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).  
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.  
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.  
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:  
CENTER SPEAKER:  
4 ohms min. per 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.  
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.  
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.  
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 versa.  
Connect the surround speakers in the same way as  
described with FRONT SPEAKERS above.  
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NOTE:  
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.  
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.  
NOTE:  
Press this button to switch the unit on. To switch  
the unit off, press this button again.  
The AC outlets should be used with units with a  
COMBINED power consumption of no more than 120  
Watts.  
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.  
13. AC POWER CORD  
After you have completed all connections to the  
amplifier, plug the AC line cord into a “live” wall sock-  
et.  
The LED will also light up when the receiver  
receives a remote control command from the sup-  
plied handset.  
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.  
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).  
NOTE:  
Ensure that the air outlets of the fan aren’t blocked  
in any way.  
Some radio stations, which support RDS, also  
transmit additional information, known as Radio Text  
(RDS RT). To view this information, use the  
DISPLAY button.  
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.  
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.  
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 information 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.  
c) Press the button from the display RT mode to dis-  
play the station frequency. Press again to return to  
the default mode (a).  
NOTE:  
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:  
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).  
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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 flash once.  
7. DOWN / UP 1and 2  
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 “ 1 ” (down) button to scroll to a lower number  
Preset; press the “ 2 ” (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.  
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.  
b) Tune mode: Press the “ 1 ” (down) or “ 2 ” (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 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.  
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 button 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.  
NOTE:  
Automatic tuning is available on both FM and AM.  
By briefly tapping the “ 1 ” (down) or “ 2 ” (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”).  
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  
preset 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.  
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,  
2TUNED1” 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 chapter “Storing and recalling  
Presets” for more information.  
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.  
8. VFL DISPLAY  
Vacuum Fluorescent Display. The display area will  
show all vital information when the unit is operational.  
Up to 40 Presets, either AM (10 Presets) or FM (30  
Presets), can be stored.  
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  
Refer also to separate chapter “Storing and  
Recalling Presets” for more information.  
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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 -  
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 the Display Panel  
when selected.  
to +18dB ······  
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.  
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).  
VIDEO 2  
10. HEADPHONE SOCKET & VIDEO 5 INPUT  
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.  
HEADPHONE SOCKET  
A 1/4” stereo jack socket is supplied for headphone  
listening and will work with conventional headphones  
of any impedance. 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.  
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.  
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.  
VIDEO 3 & VIDEO 4  
NOTES:  
Video  
3
&
4
select the signal from  
a
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 “On  
Screen Display (OSD)” for more information.  
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 when selected. The Video 3 & 4 inputs also  
have video and analogue audio outputs specifically  
for recording video devices.  
Listening at high levels can damage your hearing.  
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 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 & VIDEO INPUT SELECTORS &  
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 & 4 and TV monitor out-  
puts. Video inputs 1, 2 and 3 also select respectively  
the Digital Inputs 1, 2 and 3.  
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.  
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EXT. 5.1  
Surround Mode if the source is either Dolby Digital or  
DTS and a Digital Audio input is used.  
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.  
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.  
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.  
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”.  
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 the available surround  
sound modes:  
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.  
With any of the Digital Inputs 1, 2 & 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:  
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.  
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.  
CD  
Selects the CD as the active input.  
Dolby Digital and DTS has six independent chan-  
nels available in total: Left, Center, Right, Surround  
left, Surround Right and an “Effects Channel”  
(Subwoofer).  
FM  
Selects FM radio. FM is also automatically selected  
when an FM Preset is selected.  
AM  
The Dolby Digital signal allows for several channel  
configurations.  
Selects AM radio. AM is also automatically selected  
when an AM Preset is selected.  
DTS digital surround is an Encode/Decode system  
that currently delivers six discrete channels (5.1) of  
“Master-Quality” up to 24-bit audio.  
VIDEO OUTPUT  
The video signal available on the S-Video and  
Video Composite outputs is dependent 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.  
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.  
The display indicates which video signal is routed  
to the MONITOR OUT sockets (No. 8 on back panel).  
12. BASS & TREBLE CONTROLS  
NOTES:  
The T 751 is fitted with BASS and TREBLE tone  
Dolby Digital or DTS are only available as a  
controls to adjust the overall tonality of your system.  
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The 12 o’clock position is ‘flat’ with no boost or cut  
and a detent indicates this position.  
Deleting a stored Preset:  
You can empty a Preset by deleting the stored  
information:  
• Select the Preset to be emptied.  
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).  
• 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.  
STORING AND RECALLING PRESETS  
To store a Preset:  
REMOTE CONTROL (Figure 3.)  
• 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.  
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).  
• To store that station 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.  
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.  
• Press either the “ 1” (down) or “ 2” (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.  
The EXT 5.1, VIDEO 1 TO 5, TAPE 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):  
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.  
1. STAND-BY  
Press this green button to switch the unit from  
operating to the Stand-by mode and vice versa:  
Press this button again to switch the unit on from  
Stand-by; the last selected source will be indicated in  
the display.  
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.  
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.  
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 “ 1 ” (down) or “ 2 ” (up) button  
(No. 7) until the right Preset is found and shown in  
the Display Panel.  
NOTE:  
Any unused Presets will be skipped.  
3. MUTE:  
Press the MUTE button to temporarily switch off the  
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sound to the speakers and headphones. Mute 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.  
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 1 and 2 button to respectively decrease or  
increase the level for the current speaker.  
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.  
Pressing the CHANNEL button also gives access  
to CHANNEL BALANCE in the OSD directly:  
CENTER  
REAR R & L  
SUB  
OFF  
Refer also to the chapter “Setting Up the Surround  
Sound System” for more information.  
4. MASTER VOLUME  
Master Volume 3 or 4 respectively increases or  
decreases the volume setting for all speakers. The  
display panel will indicate the level set. The 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).  
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%, 75%, 50% and 25%) to allow for com-  
fortable listening under a variety of conditions. The  
normal or default position is 100%.  
5. CURSOR 3, 4, 1AND 2AND 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 3 to move cursor up, 4 to move cursor down,  
1 to move cursor left, 2 to move cursor right. Then  
press ENTER to access.  
To adjust the dynamic range, each consecutive  
press of the DYN. R button will reduce the value in  
25% increments, as shown in the alpha-numeric dis-  
play section.  
NOTE:  
Although we usually prefer to 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.  
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  
9. MODE  
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 1 and 2  
button to respectively decrease or increase the level  
for the current speaker. Press the TEST button again  
to leave or cancel the Test mode, any changes will be  
memorized automatically.  
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).  
;engages Pause  
9engages Stop  
2/; 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.  
Refer also to chapter “On Screen Display” and  
“Setting Up the Surround Sound System” for more  
information.  
DISC Go to next disc (for NAD CD changers).  
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11. CASSETTE DECK CONTROL  
(For use with single (DECK B) or double transport  
(A and B) NAD Cassette Decks).  
press ENTER (No. 5) to access. The 3 and 4 button  
are used to navigate and select an option (indicated  
by highlighting the available option), the 1or 2button  
to change a setting from the highlighted section and  
ENTER to choose the desired option. Otherwise,  
highlight EXIT and press ENTER to leave.  
1or 2engages Forward Play or Reverse Play.  
0/; Record / Pause. Press to put cassette deck  
into record-pause. Press Play to start recording.  
9Stops Play or Recording.  
5engages Rewind.  
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).  
6engages Fast Forward.  
The other sub menus available are:  
NOTES:  
Direct sunlight or very bright ambient lighting may  
affect the operating range and angle for the remote  
control handset.  
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):  
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.  
INPUT SETTINGS  
AUDIO = TUNER  
VIDEO = VIDEO 1  
MODE = DOLBY DIGITAL  
DYNAMIC RANGE = 100%  
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.  
DO NOT SAVE & EXIT  
SAVE & EXIT  
• The available choices in each of the fields can be  
selected with the 1 or 2 button on the remote; con-  
firm the choice with ENTER button.  
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.  
AUDIO = identifies the selected audio input  
(TUNER, CD, TAPE MONITOR and EXT. 5.1).  
• 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.  
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).  
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):  
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.  
SETUP  
Highlight SAVE & EXIT and press ENTER to  
1
2
3
4
5
INPUT SETTINGS  
CHANNEL BALANCE  
CHANNEL DELAYS  
SPEAKERS SETTINGS  
EXIT  
save the altered settings and return to the SETUP  
menu. Otherwise, select DO NOT SAVE & 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):  
Use the cursor buttons on the remote control to  
navigate, select the desired menu and options, then  
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delay time can be adjusted as following options:  
CHANNEL BALANCE  
REAR  
15, 16, 17, ...... 28, 29, 30ms  
(1ms per step)  
LEFT  
:
:
:
:
:
:
0dB  
0dB  
0dB  
0dB  
0dB  
0dB  
CENTER  
RIGHT  
REAR L  
REAR R  
SUB  
For other modes, the channel delay time cannot be  
adjusted.  
• Highlight SAVE & EXIT and press ENTER to save  
the settings and return to the SETUP menu.  
Otherwise, select DO NOT SAVE & EXIT to leave  
without saving any changes.  
DO NOT SAVE & EXIT  
SAVE & EXIT  
4 SPEAKER SETTINGS  
• 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 SPEAKER SETTINGS in the SETUP  
menu and press ENTER on the remote.You will see a  
screen similar to the following (Fig. 11):  
• Highlight the required speaker and adjust with 1  
cursor to decrease and 2cursor to increase the level,  
Each speaker can be adjusted within a -10 to +10dB  
range.  
SPEAKER SETTINGS  
PRESET  
: 1  
• Highlight SAVE & EXIT and press ENTER to save  
the settings and return to the SETUP menu.  
MAIN  
: LARGE  
: LARGE  
: LARGE  
: ON  
CENTER  
SURROUND  
SUBWOOFER  
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”).  
DO NOT SAVE & EXIT  
SAVE & EXIT  
• The size and number of speakers can be  
described in the SPEAKER SETTINGS menu. Press  
1 or 2 cursor button to select the preset (PRESET 1,  
2 or 3) that best applies.  
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):  
• 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.  
CHANNEL DELAYS  
CENTER  
REAR  
OmS  
OmS  
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:  
DO NOT SAVE & EXIT  
SAVE & EXIT  
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 position are redirected to the main speakers.  
• Use the 1or 2cursor button to change the center  
channel delay time.  
• T 751 is pre-programmed with 3 factory presets  
that are suitable for most typical installations:  
In Dolby Digital mode, T 751 allows the following  
setting options:  
CENTER  
REAR  
0, 1, 2, 3, 4 & 5ms  
0, 1, 2, 3, ...... 13, 14, 15ms  
(1ms per step)  
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-  
In Dolby Pro logic mode, only the rear channel  
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woofer. This preset is particularly useful for large  
rooms.  
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.  
Preset 2:  
Main - LARGE; Center - SMALL; Surround -  
SMALL; Subwoofer - OFF  
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.  
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:  
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.  
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.  
Using a separate center channel speaker 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.  
NOTES:  
Regardless of the available main speakers, select  
Preset 2 when subwoofer is not available to redirect  
bass frequencies to the main speakers.  
For best results, you should consider using a cen-  
ter speaker. Ideally it should be the same type as the  
left and right speakers.  
SETTING UP THE SURROUND SYSTEM.  
• Choose SURROUND and select one of the three  
modes available: Small, Large, Off.  
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.  
Installing surround speakers will greatly enhance  
the surround experience as these add considerably to  
the overall “ambience”.  
Refer to the chapter “On Screen Display (OSD)” on  
how to access the SETUP Menu of the On Screen  
Display, choose sub-menus and change settings.  
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.  
The setup procedure is broken down in three sec-  
tions:  
1. Speaker Settings  
2. Channel Balance  
3. Channel Delays  
Speaker Settings:  
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.  
First you need to indicate which speakers are con-  
nected to your T 751. Besides the Main speakers  
(Left & Right), these can include a Center, two  
Surround Speakers and a Subwoofer.  
• Call up the SETUP menu of the On Screen  
Display (Fig. 7)  
Many film soundtracks rely heavily on very low fre-  
quency sound effects which are difficult for normal or  
smaller hi-fi speakers to reproduce. 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.  
• Select the SPEAKER SETTINGS (Fig. 11)  
• Highlight PRESET and use 1 or 2 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  
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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 speakers that are up to 5 feet (1.5 m) closer  
to the listening position than the front left and right  
speakers.  
NOTES:  
Channel Delays:  
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 0mS. The center channel delay time adjust-  
ment is only available in Dolby Digital surround mode.  
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.  
To set the rear channel delay time,  
• Use the 3 or 4 cursor button (No. 7) to highlight  
the REAR.  
• Scroll the preset delay time options by 1 and 2  
cursor buttons.  
Measure the distance from the listening position 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  
0mS if the rear channels are further from the listening  
position than the front speakers.  
Each millisecond corresponds approximately with 1  
foot or 30.5 centimeters.  
NOTE:  
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).  
In Dolby Digital surround mode, the rear channel  
delay time can be set from 0ms to 15ms with 1ms  
increments.  
• Select the CHANNEL DELAYS menu (Fig. 10).  
• Choose CENTER and select the desired delay  
time (1, 2, 3, 4 or 5ms).  
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.  
FRONT  
LEFT  
FRONT  
RIGHT  
CENTER  
dC  
• When both delays have been entered, choose  
“SAVE & EXIT” to save the settings and return to the  
Main Menu.  
dFL  
dFS  
dFR  
dRS  
LISTENING  
POSITION  
Channel Balance:  
REAR  
LEFT  
REAR  
RIGHT  
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.  
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.  
To adjust the channel balance the T 751 is  
equipped with a TEST button (No. 6) to help assess  
the 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.  
The T 751 can delay the center channel output up  
to 5 milliseconds and thus compensates for center  
Pressing the TEST button engages the Test signal  
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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 1 and 2  
button to respectively increase or decrease the level  
for the current speaker.  
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  
operational 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 T 751 to the remote component’s DC  
input jack. The plug required is a standard 3.5mm  
Mini-Jack plug (“mono”): The tip is the live or + con-  
nection, the shaft of the input jack is the 12V-trigger -  
or ground connection.  
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.  
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 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.  
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.  
Press the TEST button again to leave or cancel the  
Test mode, any changes will be memorized automati-  
cally.  
Before making any connections to any 12V trigger  
input or output, make sure all components are dis-  
connected from the AC mains.  
The loudspeaker levels can also be individually  
adjusted with the OSD setup menu:  
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.  
• 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 0dB 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.  
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TROUBLESHOOTING  
PROBLEM  
CAUSE  
SOLUTION  
NO SOUND  
• Power AC lead unplugged or  
power not switched on  
• Tape Monitor selected  
• Mute on  
Check if AC lead is plugged in  
and power switched on  
De-select Tape Monitor mode  
Switch off Mute  
NO SOUND ON ONE CHANNEL  
• Speaker not properly connected  
or damaged.  
Check connections and  
speakers  
• Input lead disconnected or  
damaged  
• In Setup “OFF” for surround  
speaker selected  
Check leads and connections  
Select appropriate Surround  
mode (large or small)  
NO SOUND ON SURROUND  
CHANNELS  
• No surround mode selected  
• Mono sound source  
Select a Surround Mode  
Test system with Stereo or  
Dolby Surround material  
Check speakers and  
connections  
• Speakers not properly connected  
• Surround volume level too low  
Increase surround volume  
level  
NO SOUND ON CENTER  
CHANNEL  
• In Setup “OFF” for center speaker  
selected  
Select appropriate Center  
mode (large or small)  
• Speaker not connected properly  
• Center volume level set too low  
Check speaker and connection  
Increase center volume level  
“DOLBY DIGITAL” OR “DTS”  
AUTO-DETECTION FUNCTION  
DOES NOT WORK  
• Source not connected using  
digital inputs  
Connect digital output of  
source to T 751  
WEAK BASS/ DIFFUSE  
STEREO IMAGE  
• Speakers wired out of phase  
Check connections to all  
speakers in the system  
REMOTE CONTROL HANDSET  
NOT WORKING  
• Batteries flat, or incorrectly  
inserted  
• IR transmitter or receiver  
windows obstructed  
Check or replace batteries  
Remove obstruction  
• IR receiver in direct sun or very  
bright ambient light  
Place unit away from direct  
sun, reduce amount of  
ambient light  
• Antenna leads incorrectly  
connected  
Check antenna connections to  
receiver  
NO SOUND WITH TUNER  
• Station not selected or weak  
signal with FM Mute on.  
Re-tune or switch off FM Mute  
NOISE, HISS ON AM AND FM  
DISTORTION ON FM  
• Weak signal  
Check station tuning. Adjust  
or replace antenna.  
• Multi-path signals or interference  
from another station  
Check station tuning. Adjust  
or replace antenna  
WHISTLES OR BUZZES ON  
FM & AM  
• Interference from other electrical  
sources - computers, games  
consoles  
Check station tuning. Switch  
off or move the source of the  
electrical noise  
• Interference from fluorescent  
lighting or electrical motors  
Check station tuning. Adjust  
or replace AM antenna  
WHISTLES OR BUZZES ON  
AM  
NO RDS NAME (PS)  
• Station signal too weak.  
Check station tuning. Adjust  
or replace antenna  
No remedy  
• Station not transmitting RDS data  
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NAD ELECTRONICS  
(NEW ACOUSTIC DIMENSION)  
LONDON  
© 2000. T 751 I.M. PRINTED IN THE PEOPLE’S REPUBLIC OF CHINA.  
P/N: 4301-4108-0  

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