NAD T 751751 User Manual

NAD

T 751

751

• 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

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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.

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Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the Double-D symbol are trade-

reserved.

REAR PANEL CONNECTIONS (Figure 1.)

FRONT PANEL CONNECTIONS (Figure 2.)

751

REMOTE CONTROL

(Figure 3.)

(Figure 4.)

(Figure 5.)

(Figure 6.)

751

Batterij niet

weggooien maar

inleveren als KCA

SIMPLE T 751 SYSTEM (Figure A.)

VIDEO

STEREO AUDIO

TAPE

IN / OUT

VCR

IN / OUT

SOPHISTICATED T 751 SYSTEM (Figure B.)

AUDIO / GAMES

VIDEO

STEREO AUDIO

SUBWOOFER

TAPE

IN / OUT

VCR

IN / OUT

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

NAD T 751 SURROUND SOUND RECEIVER

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.

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:

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.

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).

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.

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

select the signal from

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.

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.

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).

Selects FM radio. FM is also automatically selected

when an FM Preset is selected.

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.

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

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).

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

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

delay time can be adjusted as following options:

CHANNEL BALANCE

REAR

15, 16, 17, ...... 28, 29, 30ms

(1ms per step)

LEFT

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

: 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

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

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

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

• 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

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.

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

NO RDS NAME (PS)

• Station signal too weak.

• Check station tuning. Adjust

or replace antenna

• No remedy

• Station not transmitting RDS data

NAD ELECTRONICS

(NEW ACOUSTIC DIMENSION)

LONDON

P/N: 4301-4108-0

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