NAD C370 Owner's Manual

Cover page of NAD C370 Owner's Manual

Owner's Manual for NAD C370, downloadable as a PDF file.

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Owner's Manual
GB
Manuel d'Installation
F
Bedienungsanleitung
D
Manual del Usuario
E
Manuale delle Istruzioni
I
Manual do Proprietário
P
Bruksanvisning
S
C370
Stereo Integrated Amplifier
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Owner's Manual
GB
Manuel d'Installation
F
Bedienungsanleitung
D
Manual del Usuario
E
Manuale delle Istruzioni
I
Manual do Proprietário
P
Bruksanvisning
S
C370
Stereo Integrated Amplifier
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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
the product.
Do not place this unit on an unstable cart, stand or tripod, bracket
or table. The unit may fall, causing serious injury to a child or adult
and 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
adhered to.
Do not use this unit near water; for example, near a bath tub,
washbowl, kitchen sink, laundry tub, in a wet basement or near a
swimming pool.
The unit should be installed so that its location or position does not
interfere with its proper ventilation. For example, it should not be
situated on a bed, sofa, rug or similar surface that may block the
ventilation openings; or placed in a built-in installation, such as a
bookcase or cabinet, that may impede the flow of air through its
ventilation openings.
The unit should be situated from heat sources such as radiators,
heat registers, stoves or other devices (including amplifiers) that
produce heat.
The unit should be connected to a power supply outlet only of the
voltage and frequency marked on its rear panel.
The power supply cord should be routed so that it is not likely to be
walked on or pinched, especially near the plug, convenience
receptacles, or where the cord exits from the unit.
Unplug the unit from the wall outlet before cleaning. Never use
benzine, thinner or other solvents for cleaning. Use only a soft
damp cloth.
The power supply cord of the unit should be unplugged from the
wall outlet when it is to be unused for a long period of time.
Care should be taken so that objects do not fall, and liquids are not
spilled into the enclosure through any openings.
This unit should be serviced by qualified service personnel when:
A. The power cord or the plug has been damaged; or
B. Objects have fallen, or liquid has been spilled into the unit; or
C. The unit has been exposed to rain or liquids of any kind; or
D. The unit does not appear to operate normally or exhibits a
marked change in performance; or
E. The device has been dropped or the enclosure damaged.
DO NOT ATTEMPT SERVICING OF THIS UNIT
YOURSELF. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL
Upon completion of any servicing or repairs, request the service
shop's 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.
ATTENTION
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
FOND.
CAUTION
TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT FULLY INSERT.
If an indoor antenna is used (either built into the set or installed
separately), never allow any part of the antenna to touch the metal
parts of other electrical appliances such as a lamp, TV set etc.
CAUTION
POWER LINES
Any outdoor antenna must be located away from all power lines.
OUTDOOR ANTENNA GROUNDING
If an outside antenna is connected to your tuner or tuner-
preamplifier, be sure the antenna system is grounded so as to
provide some protection against 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
TELEVISION EQUIPMENT.
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.
CAUTION
RISK OF ELECTRIC
SHOCK DO NOT OPEN
ATTENTION:
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
2
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3
FRONT PANEL CONTROLS
REMOTE CONTROL
REAR PANEL CONNECTIONS
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GB
4
QUICK START
1. Connect the speakers to the Speaker A terminals and sources
to the relevant rear input sockets.
2. Plug in the AC power cord.
3. Press the POWER button to turn the NAD C370 on.
4. Press the required input selector.
NOTES ON INSTALLATION
Your NAD C370 should be placed on a firm, level surface. Avoid
placing the unit in direct sunlight or near sources of heat and
dampness. Allow adequate ventilation. Do not place the unit on a
soft surface like a carpet. Do not place unit in an enclosed
position, such a bookcase or cabinet, that may impede the air-flow
through the ventilation slots. Make sure the unit is switched off
before making any connections.
The RCA sockets on your NAD C370 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 in.
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 C370, 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.
REAR PANEL CONNECTIONS (FIGURE 1)
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 C370 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. TUNER INPUT
Input for a Tuner or other line-level signal source. Use a twin RCA-
to-RCA lead to connect the Tuner left and right 'Audio Outputs' to
this input.
6. TAPE 2 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
2 IN sockets for playback. Connect the left and right 'Audio Input'
of the tape machine to the TAPE 2 OUT sockets for recording.
7. TAPE 1 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 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.
8. PRE OUT 1
In normal use the PRE OUT 1 is connected to the Main-In sockets
(No. 9) with the links supplied. The NAD C370 allows for the
connection of multiple power amplifiers. If you are using a single,
external stereo power amplifier, disconnect the links to the Main-
In sockets. The C370's internal power amplifier is now
disconnected. Use a twin RCA-to-RCA lead to connect to the left and
right 'Audio Input' of the Power amp to the PRE OUT 1 sockets.
If you are using an additional stereo power amplifier specifically
for Bi-Amping, use the PRE OUT 1 sockets to connect the power
amplifier with the lowest gain of the pair. Refer also to chapter "Bi-
Amping" for more information.
NOTES:
Always turn the C370 and associated external power
amplifiers off before connecting or disconnecting anything to the
PRE-OUT 1, 2 and MAIN-IN sockets.
The PRE-OUT 1&2 output signals will be affected by the NAD
C370's volume and tone control settings.
9. MAIN IN
Connections to an external pre-amplifier or processor, such as a
surround-sound decoder. In normal use these are connected to
the Pre-Out 1 sockets (No. 8) with the links supplied. To connect
your NAD C370 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.
NOTES:
Always turn the C370 and associated external power
amplifiers off before connecting or disconnecting anything to the
PRE-OUT 1, 2 and MAIN-IN sockets.
The PRE-OUT 1&2 output signals will be affected by the NAD
C370's volume and tone control settings.
10. PRE OUT 2
The PRE OUT 2 sockets can be used to drive an additional power
amplifier. The VOLUME Pre-Out 2 control (No. 11) can be used to
reduce the output level of the pre-amplifier to the power amplifier
by up to -12dB. With the VOLUME Pre-Out 2 control set to the
maximum position (at the 0dB position), the output level will be
identical to that of the PRE OUT 1 sockets.
NAD C370 Stereo Integrated Amplifier
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5
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If you are using a pair of power amplifiers specifically for Bi-
Amping, use the PRE OUT 2 sockets to connect the power amplifier
with the highest gain of the pair. By adjusting the VOLUME PRE OUT
2 control (No. 11) the volume level can be matched exactly to that
of the power amplifier connected to the PRE OUT 1 sockets. Refer
also to chapter "Bi-Amping" for more information. Use a twin RCA-
to-RCA lead to connect to the left and right 'Audio Input' of the
Power amp to the PRE OUT 1 & 2 sockets.
NOTES:
Always turn the C370 and associated external power
amplifiers off before connecting or disconnecting anything to the
PRE-OUT 1, 2 and MAIN-IN sockets.
The PRE-OUT 1&2 output signals will be affected by the NAD
C370's volume and tone control settings.
11. VOLUME PRE OUT 2
The VOLUME Pre-Out 2 control allows for adjustment of the
output level of the PRE OUT 2 sockets. The output level can be
reduced from 0dB to -12dB; when set to the maximum position
(at the 0dB position), the output level will be identical to that of
the PRE OUT 1 sockets. Refer also to chapter "Bi-Amping" for
more information.
NOTES:
Always turn the C370 and associated external power
amplifiers off before connecting or disconnecting anything to the
PRE-OUT 1, 2 and MAIN-IN sockets.
The PRE-OUT 1&2 output signals will be affected by the NAD
C370's volume and tone control settings.
12. BRIDGE MODE
The NAD C370 can be used as part of a higher power stereo or
home-theatre system, by connecting adding additional power
amplifiers. If the power amp section in the NAD C370 is to be used
to drive a single speaker, then use the Bridge switch to run the
built-in Left and Right power amplifiers as a single channel, high
power unit. Set the BRIDGE MODE switch to the 'Bridge' position
and connect the speaker to the terminals marked 'L +' and 'R+'
ensuring that the 'L+' is connected to the '+' terminal on your
loudspeaker and the 'R+' is connected to the loudspeaker's '-'
terminal. Connect the source to the Left MAIN-IN input.
In Bridged Mode the NAD C370 will produce approximately 300W
into an 8 ohm loudspeaker. In this mode, the amplifier sections
will react as though the speaker impedance has been halved. Low
impedance speakers (under 8 ohms) are not recommended when
using Bridge Mode, as these may cause the amplifier's thermal
cut-out to operate if played at high levels.
The Bridge LED on the front panel (Fig. 2; No. 2) will illuminate
when the amplifier is in Bridge mode.
NOTES:
Do not connect anything to the Right MAIN-IN input
(No. 9) when Bridge Mode is selected. Always turn the C370 and
associated external power amplifiers off before connecting or
disconnecting anything to the PRE-OUT 1, 2 and MAIN-IN sockets.
13. SOFT CLIPPINGTM
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
ClippingTM 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 ClippingTM switch to Off. If you are likely to play at high levels,
that could stretch the amplifier's power capability, then switch Soft
Clipping On. The Soft ClippingTM indicator on the front panel will
illuminate when the amplifier is in Soft Clipping mode.
14. 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 tuner, CD player or
cassette-deck) also equipped with NAD-Link to be controlled with
the amplifier's remote control. To function with such other units,
connect the C370'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.
NOTES:
It is advisable not to connect NAD-Link if these units that
have their own built-in remote control command receiver and are
positioned together, in direct view from the remote control
handset. If you are unsure, try operating the products without
NAD-Link first; If the unit responds to the remote control
command, it will not be necessary to connect NAD-Link.
Never loop the last unit back to the first NAD unit in the NAD-Link
chain. Unplug all units from the mains before connecting or
disconnecting NAD-Link.
15. 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 switched to normal
operational mode from Stand-by or Off.
For switching Stand-by/Power On of an external component
through the C370, connect the12V-trigger output of the C370 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 +
connection, the shaft of the input jack is the 12V-trigger - or
ground connection.
NOTES:
Check the specifications of the Trigger input terminal on
the other components to ensure these are compatible with the
C370's 12V-trigger output. NAD components equipped with 12V
input triggers are fully compatible with the C370's 12V output
trigger. The C370's 12V-trigger output voltage is 12V DC. The total
maximum current must not exceed 200mA. Typically, NAD 12V
input triggers draw less than 10mA of current.
Before making any connections to any 12V trigger input or output,
make sure all components are disconnected from the AC mains.
Failure to observe the above may result in damage to the C370 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.
16. SPEAKERS A + SPEAKERS B
The NAD C370 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.

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