NAD C370 - Owner's Manual Immediate Download

Owner's Manual

Manuel d'Installation

Bedienungsanleitung

Manual del Usuario

Manuale delle Istruzioni

Manual do Proprietário

Bruksanvisning

C370

Stereo Integrated Amplifier

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

FRONT PANEL CONTROLS

REMOTE CONTROL

REAR PANEL CONNECTIONS

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

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.