Stereo AM/FM Receiver
Manual del Usuario
Manuale delle Istruzioni
Manual do Proprietário
Warning: To reduce the risk of fire or electric shock, do not
expose this unit to rain or moisture.
The lightning flash with an arrowhead symbol within an equilateral
triangle, is intended to alert the user to the presence of uninsulated
"dangerous voltage" within the product's enclosure that may be of
sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to
alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying
Do not place this unit on an unstable cart, stand or tripod, bracket
or table. The unit may fall, causing serious injury to a child or adult
and serious damage to the unit. Use only with a cart, stand, tripod,
bracket or table recommended by the manufacturer or sold with
the unit. Any mounting of the device on a wall or ceiling should
follow the manufacturer's instructions and should use a mounting
accessory recommended by the manufacturer.
An appliance and cart combination should be moved with care.
Quick stops, excessive force and uneven surfaces may cause the
appliance and cart combination to overturn.
Read and follow all the safety and operating instructions before
connecting or using this unit. Retain this notice and the owner's
manual for future reference.
All warnings on the unit and in its operating instructions should be
Do not use this unit near water; for example, near a bath tub,
washbowl, kitchen sink, laundry tub, in a wet basement or near a
The unit should be installed so that its location or position does not
interfere with its proper ventilation. For example, it should not be
situated on a bed, sofa, rug or similar surface that may block the
ventilation openings; or placed in a built-in installation, such as a
bookcase or cabinet, that may impede the flow of air through its
The unit should be situated from heat sources such as radiators,
heat registers, stoves or other devices (including amplifiers) that
The unit should be connected to a power supply outlet only of the
voltage and frequency marked on its rear panel.
The power supply cord should be routed so that it is not likely to be
walked on or pinched, especially near the plug, convenience
receptacles, or where the cord exits from the unit.
Unplug the unit from the wall outlet before cleaning. Never use
benzine, thinner or other solvents for cleaning. Use only a soft
The power supply cord of the unit should be unplugged from the
wall outlet when it is to be unused for a long period of time.
Care should be taken so that objects do not fall, and liquids are not
spilled into the enclosure through any openings.
This unit should be serviced by qualified service personnel when:
A. The power cord or the plug has been damaged; or
B. Objects have fallen, or liquid has been spilled into the unit; or
C. The unit has been exposed to rain or liquids of any kind; or
D. The unit does not appear to operate normally or exhibits a
marked change in performance; or
E. The device has been dropped or the enclosure damaged.
DO NOT ATTEMPT SERVICING OF THIS UNIT
YOURSELF. REFER SERVICING TO QUALIFIED
Upon completion of any servicing or repairs, request the service
shop's assurance that only Factory Authorized Replacement Parts
with the same characteristics as the original parts have been used,
and that the routine safety checks have been performed to
guarantee that the equipment is in safe operating condition.
REPLACEMENT WITH UNAUTHORIZED PARTS MAY RESULT IN FIRE,
ELECTRIC SHOCK OR OTHER HAZARDS.
POUR ÉVITER LES CHOC ELECTRIQUES, INTRODUIRE LA
LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE
CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU'AU
TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT FULLY INSERT.
If an indoor antenna is used (either built into the set or installed
separately), never allow any part of the antenna to touch the metal
parts of other electrical appliances such as a lamp, TV set etc.
Any outdoor antenna must be located away from all power lines.
OUTDOOR ANTENNA GROUNDING
If an outside antenna is connected to your tuner or tuner-
preamplifier, be sure the antenna system is grounded so as to
provide some protection against voltage surges and built-up static
charges. Article 810 of the National Electrical Code, ANSI/NFPA No.
70-1984, provides information with respect to proper grounding of
the mast and supporting structure, grounding of the lead-in wire to
an antenna discharge unit, size of grounding conductors, location of
antenna discharge unit, connection to grounding electrodes and
requirements for the grounding electrode.
a. Use No. 10 AWG (5.3mm2) copper, No. 8 AWG (8.4mm2)
aluminium, No. 17 AWG (1.0mm2) copper-clad steel or bronze
wire, or larger, as a ground wire.
b. Secure antenna lead-in and ground wires to house with stand-off
insulators spaced from 4-6 feet (1.22 - 1.83 m) apart.
c. Mount antenna discharge unit as close as possible to where lead-
in enters house.
d. Use jumper wire not smaller than No.6 AWG (13.3mm2) copper,
or the equivalent, when a separate antenna-grounding electrode
is used. see NEC Section 810-21 (j).
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL
CODE INSTRUCTIONS CONTAINED IN ARTICLE 810 - RADIO AND
NOTE TO CATV SYSTEM INSTALLER: This reminder is
provided to call the CATV system installer's attention to
Article 820-40 of the National Electrical Code that provides
guidelines for proper grounding and, in particular, specifies
that the ground cable ground shall be connected to the
grounding system of the building, as close to the point of
cable entry as practical.
RISK OF ELECTRIC
SHOCK DO NOT OPEN
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE COVER (OR BACK). NO
USER SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
IMPORTANT SAFETY INSTRUCTIONS
REAR PANEL CONNECTIONS
FRONT PANEL CONTROLS
NOTES ON INSTALLATION
Your NAD C740 should be placed on a firm, level surface. Avoid
placing the unit in direct sunlight or near sources of heat and
Allow adequate ventilation. Do not place the unit on a soft surface
like a carpet. Do not place or it in an enclosed position such a
bookcase or cabinet that may impede the air-flow through the
Make sure the unit is switched off before making any connections.
The RCA sockets on your NAD C740 are colour coded for
convenience. Red and white are Right and Left audio respectively,
and yellow for NAD Link.
Use high quality leads and sockets for optimum performance and
reliability. Ensure that leads and sockets are not damaged in any
way and all sockets are firmly pushed home.
For best performance, use quality speaker leads of 16 gauge
(1.5mm) thickness or more. If the unit is not going to be used for
some time, disconnect the plug from the AC socket.
Should water get into your NAD C740, 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-
serviceable 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.
1. Connect the speakers to the rear Speaker sockets and sources
to the relevant rear input sockets.
2. Plug in the AC power cord.
3. Press the POWER button (No. 1) to turn on the NAD C740.
4. Press the required input selector.
5. For radio listening, connect AM and FM antenna.
6. Press the AM/FM button (No. 11) to select AM or FM
7. Press Search/Preset (No. 13) until "SEARCH" is indicated in
the display to select Search mode.
8. Use Tune/Preset (No. 19) to select a station.
REAR PANEL CONNECTIONS
1. DISC INPUT
Input for additional line level input signals such as CD, Mini Disc
player or the output signal from a step-up amplifier for a
turntable. Use a twin RCA-to-RCA lead to connect the auxiliary
unit's left and right `Audio Outputs' to this input.
2. CD INPUT
Input for a CD 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. The NAD C740 only accepts analogue
signals from your CD player.
3. VIDEO INPUT
Input for the audio signal from a stereo VCR (or stereo
TV/Satellite/Cable receiver) or other line-level audio source.
Using twin RCA-to-RCA leads, connect to the left and right `Audio
Out' of the unit to these inputs. Note: These are audio inputs only.
4. AUX INPUT
Input for additional line level input signals such as another CD
player. Use a twin RCA-to-RCA lead to connect the auxiliary unit's
left and right `Audio Outputs' to this input.
5. TAPE 1 IN, OUT
Connections for analogue recording and playback to an audio
tape recorder of any type. Using twin RCA-to-RCA leads, connect
to the left and right `Audio Output' of the tape machine to the TAPE
1 IN sockets for playback and tape monitoring. Connect the left
and right `Audio Input' of the tape machine to the TAPE 1 OUT
sockets for recording.
6. TAPE 2 IN, OUT
Connections for analogue recording and playback to a secondary
audio tape recorder of any type. Using twin RCA-to-RCA leads,
connect to the left and right `Audio Output' of the tape machine to
the TAPE 2 IN sockets for playback and tape monitoring. Connect
the left and right `Audio Input' of the tape machine to the TAPE 2
OUT sockets for recording.
7. PRE OUT
Connections to an external power amplifier or processor, such as
a surround-sound decoder. In normal use these should be
connected to the Main-In sockets (No. 8) with the links supplied.
To connect your NAD C740 to external processor or amplifier
sections first remove these links. Use a twin RCA-to-RCA lead to
connect to the left and right `Audio Input' of the Power amp or
processor to the Pre Out sockets.
NOTE: The Pre-Out output signal will be affected by the NAD
C740's volume and tone control settings, always turn the receiver
off before connecting or disconnecting anything from to Pre-Out
and Main-In sockets.
8. MAIN IN
Connections to an external pre-amplifier or processor, such as a
surround-sound decoder. In normal use these should be
connected to the Pre-Out sockets (No. 7) with the links supplied.
To connect your NAD C740 to external processor or pre-amplifier
first remove these links. Use a twin RCA-to-RCA lead to connect to
the left and right `Audio Output' of the pre-amp or processor to
the Main-In sockets.
NOTE: Always turn the receiver off before connecting or
disconnecting anything from to Pre-Out and Main-In sockets.
9. AM ANTENNA
An AM loop antenna is supplied with the NAD C740 and is
required for AM reception. To connect the AM antenna, first press
the keys on the Antenna terminals downwards. Insert the bare
antenna wires into the two terminal holes and push the connector
keys upwards again to secure the connection (see fig 2).
Test various 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
NAD C740 Stereo AM/FM Receiver
10. FM ANTENNA
A ribbon wire FM antenna is included and should be connected to
the FM connector at the rear of the unit
(The 120V versions (North America) should use the `balun'
adapter supplied - see fig 1). The ribbon aerial should be
mounted on a vertical surface and placed so that it forms a `T'.
Experiment with placement of the antenna to find the position that
gives the best signal strength and lowest background noise. An
inadequate FM signal normally results in high levels of hiss,
especially in stereo, and interference from external electrical
sources. In areas of poor FM reception, the tuner section's
performance can be improved by using an externally mounted FM
antenna. A qualified aerial installer will be able to advise and fit a
recommended aerial for your reception conditions.
11. SOFT CLIPPING
When an amplifier is driven beyond its specified power output, 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 minimise
audible distortion if the amplifier is overdriven.
If your listening involves moderate power levels you may leave the
Soft Clipping switch to Off. If you are likely to play at high levels,
that could stretch the amplifier's power capability, then switch Soft
"SOFT CLIPPING" lights up in the display area when the receiver
is in Soft Clip mode.
12. SPEAKERS A + SPEAKERS B
The NAD C740 is equipped with two sets of speaker connectors.
Use the Speakers A connectors for the `main' speakers and use the
Speakers B connectors for a second pair, for example, extension
speakers located in another room.
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 `-'
Connect the terminals marked `L+' and `L-' to the left speaker in
the same way.
Always use heavy duty (16 gauge; 1.5mm, or thicker) stranded
wire to connect loudspeakers to your NAD C740.
The high-current binding post terminals can be used as a screw
terminal for cables terminating in spade or pin sockets or for
cables with bare wire ends.
BARE WIRES AND PIN CONNECTORS
Bare wires and pin sockets should be inserted into the hole in the
shaft of the terminal. Unscrew the speaker terminal's plastic
bushing until the hole in the screw shaft is revealed. Insert the pin
or bare cable end into the hole and secure the cable by tightening
down the terminal's bushing. (see fig 3)
Ensure bare wire from the speaker cables does not touch the back
panel or another socket . Ensure that there is only 1/2" (1cm) of
bare cable or pin and no loose strands of speakers wire.
NOTE: Make sure the speaker impedance is 4 ohms or more
when connecting only one pair of speakers; make sure the
speaker impedance for all speakers is over 8 ohms when
connecting two sets of speakers.
13. NAD LINK IN, OUT
The NAD-Link connector is used to pass commands from other
units fitted with NAD-Link connectors. This allows centralised
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 function with such other units,
connect the C740'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.
14. AC LINE CORD
Plug the AC power cord into a live AC wall socket. Make sure all
connections have been made before connecting to mains.
FRONT PANEL CONTROLS
1. POWER ON/OFF
Press the POWER button to switch the receiver to its `Stand-by'
mode. The Stand-by indicator (No. 4) over the power button will
light up. On the front panel, press any of the input selector buttons
to switch to receiver on. From the remote control, press the green
Stand-by button (located just over the Speakers A and B buttons)
to switch the unit on. The display will light up indicating which
input was selected, the Stand-by indicator will extinguish.
Pressing the POWER switch again will turn the unit OFF
completely. The NAD C740 receiver uses a memory back-up
system to store preset station information for the tuner section.
This information is retained for several weeks, even the unit is
switched off completely or unplugged.
STAND-BY button (green):
Press this button to switch the unit from operating to the Stand-by
mode and vice versa: Press this button again to switch to unit on
from Stand-by; the last selected source will be indicated in the
NOTE: Stand-by mode is indicated by the Stand-by indicator (No. 4)
just over the green POWER button on the front panel (No. 1)
In Stand-by mode the C740 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.
2 + 3. SPEAKERS A; SPEAKERS B
The A and B buttons engage or disengage the speakers connected
to respectively the Speakers A and Speakers B terminals on the
Press A to switch the speakers connected to the speaker A
terminals On or Off.
Press B to switch the speakers connected to the speaker A
terminals On or Off.
The status of speakers A and B On or Off is indicated in the upper-
left corner of the display area. If Speakers A and B are both engaged
(shown by "SPEAKERS A B" in the display area), the amplifier's
output power is fed to both sets of speakers in parallel. If speakers
A and B both are disengaged, both sets of speakers are silenced.
You can use this setting mode to listen to headphones (No. 5).
NOTE: Always turn the volume down when engaging or
disengaging either Speaker A or Speaker B.