NAD S200 - Owner's Manual Immediate Download

S200

Stereo Power Amplifier

Owner's Manual

Manuel d'Installation

Bedienungsanleitung

Manual del Usuario

Manuale delle Istruzioni

Manual do Proprietário

Bruksanvisning

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

REAR PANEL CONNECTIONS

FIGURE 1

NAD

S200

NAD

S200

NAD S200 Stereo Power Amplifier

NOTES ON INSTALLATION

This unit may be installed on any level surface that is strong enough

to support its weight. Since its power transformer generates a

significant magnetic hum field, a turntable (especially one with a

moving-coil pick-up cartridge) or a TV should not be located adjacent

to the amplifier or directly above it.

The heat-sink fins make it awkward to lift the S200 by grasping the

left and right sides. You may find it more practical to place your

hands under the front and rear panels. Much of the amplifier's

weight is near the front panel.

CAUTION: The amplifier's weight must always rest on its bottom feet.

Never put the amplifier down on its rear panel, with its front panel

facing up. Doing so risks damage to the input/output connectors.

The amplifier generates a moderate amount of heat, requiring

internal ventilation. Do not permit the air outlet grille on the top

cover to be obstructed by papers or articles of clothing. If you want

to locate the amplifier on a carpeted floor, place a board under the

amplifier in order to prevent it from sinking into the carpet, blocking

the air inlets on its bottom.

CAUTION: To prevent a fire or shock hazard, do not permit liquid or

moisture to enter the amplifier. If liquid is accidentally spilled on it,

immediately shut off the power and unplug the AC Mains cable

from the wall outlet.

Do not open the amplifier or attempt to modify or repair it

yourself. Refer all servicing to a qualified technician.

REAR PANEL CONNECTIONS

1. IEC AC MAINS (POWER) INPUT

The NAD S200 comes supplied with a separate AC Mains cable.

Before connecting the cable to a live wall socket ensure that it is

firmly connected to the S200's AC Mains input socket first. Always

disconnect the AC Mains cable plug from the live wall socket first,

before disconnecting the cable from the S200 Mains input socket.

Plug the AC Mains cable into a live wall socket. If you must use an

extension cord, select a heavy-duty cord of the type used for large

electrical appliances.

Do not connect the amplifier's Mains cable to the accessory AC outlets

on a preamplifier. Such convenience outlets are not designed to supply

the high power levels, up to 800 watts, that the S200 requires. If you

wish to switch your entire audio system on and off at once, plug both

the S200 and your preamplifier into a "power strip" containing several

grounded AC outlets and a high-current on/off switch.

Voltage conversion. A notice printed on the rear indicates the AC

power-line voltage that the amplifier requires. However, every model

S200 amplifier has a "universal" power supply that can be modified

easily for operation in other countries. If you wish to transport your

S200 to a nation that employs a different power-line voltage, an

authorised NAD dealer or service agency can convert it for such use.

2. SPEAKERS

This amplifier is equipped with special high-current binding post

speaker terminals to handle the highest peak power levels that may

occur in the "bridged" mode or with low-impedance speakers. At

moments when the amplifier is producing maximum power, voltages

of nearly 100 V may be present on the speaker terminals, so the

terminals are protected by transparent plastic covers.

To connect loudspeaker cables, first switch off the amplifier's power.

If you are connecting a pair of speakers for normal stereo operation,

be sure that the bridging switch is set to OFF (STEREO).

For best stereo imaging, the left and right speakers should be located

at equal distances from your chair. To minimise the effect of speaker

cables on the sound, locate the amplifier near the speakers and use

short cables to connect the speakers. If your preamplifier is located at

the opposite end of the room near your chair, you will need a long

cable to connect it to the power amplifier. All NAD preamplifiers have

the low output impedance required to drive long connecting cables.

Connect the wires from your left channel speaker to the (L+) and (L-)

terminals on the rear panel of the S200, and connect the wires from

the right channel speaker to the (R+) and (R-) terminals. In each

channel, the red terminal is the positive (+) output, and the black

terminal is the negative (-) or "ground" terminal.

Use heavy duty (16-gauge/2 sq.mm or thicker) wire, especially with 4

ohm loudspeakers. Bare wires can be connected directly to the

binding post terminals. For a longer lasting and more corrosion

resistant connection, you may purchase speaker cables with gold

plated connectors (pin connectors or spade lugs), or you can install

such connectors on the wires yourself. Connections to each binding

post may be made in several ways as follows. (See Figure 1.)

1. Pin connectors. A pin connector is a slim metal shaft that is crimped

or soldered onto the end of a wire. The threaded shaft of each

binding post contains an opening that accepts pin connectors up

to 3mm in diameter. Unscrew the plastic bushing on each terminal

to expose the hole in the metal shaft. Insert the pin connector

through the hole, and turn the bushing clockwise until it is tight.

2. Spade lugs. Unscrew the plastic bushing, insert the U-shaped spade

lug into the oblong gap and tighten the bushing down on it.

3. Bare wires. Separate the two conductors of the cord (if they appear

as a pair), and strip off a half-inch (1cm) of insulation from each. In

each conductor, twist together the exposed wire strands. Unscrew

the plastic bushings for + and -, insert the bare wire through the

hole in the metal shaft, and tighten the plastic bushing until it

grasps the wire securely. Check to be sure that no loose strand of

wire is touching the chassis or an adjacent terminal. Re-tighten the

bushing after a week or so to make sure that any play that may

have developed is eliminated.

CAUTION: Safety organisations recommend that the speaker

terminals of a very powerful amplifier should be covered. Potentially

dangerous voltages are present on these terminals when the

amplifier is producing maximum power. For your protection and in

order to comply with these regulations, we have chosen speaker

terminals of the very highest quality for the NAD S200. These

terminals are covered by plastic bushings which prevent the touching

of metal parts.

PHASING

Stereo speakers must operate "in phase" with each other to produce

a focused stereo image and to reinforce rather than cancel each

other's output at low frequencies. An in-phase connection is assured

if the red (positive) terminal on the amplifier is connected to the red

(positive) terminal on the loudspeaker in each channel.

If your speakers are easily moved, their phasing can easily be checked.

Make the connections to both speakers, place the speakers face-to-

face only a few inches apart, play some music, and listen. Then swap

the connection of the two wires at the back of ONE of the speakers,

and listen again. The connection which produces the fullest, boomiest

bass output is the correct one. Connect the wires securely to the

speaker terminals, being careful not to leave any loose strands of wire

that might touch the wrong terminal and create a partial short-circuit

then move the speakers to their intended locations.

If the speakers cannot easily be set face-to-face, then phasing must

rely on the "polarity" of the connecting wires. The speaker terminals

on the amplifier are identified as red (+) and black (-) in each

channel. The terminals at the rear of the speakers are also marked

for polarity, either via red and black connectors or by labels: "+",

"1", or "8 ohms" for positive, "-", "0", or "G" for negative. The

red (+) terminal on the amplifier should be connected to the red

(positive) terminal of the speaker in each channel.

To facilitate this, the two conductors comprising the speaker wire in

each channel are different, either in the colour of the wire itself

(copper vs. silver) or in the presence of a small ridge or rib pattern on

the insulation of one conductor. Use this pattern to establish

consistent wiring to both speakers of a stereo pair. Thus if you

connect the copper coloured wire (or ribbed insulation) to the (+)

amplifier terminal in the Left channel, do the same in the Right

channel. At the other end of the wire, if you connect the copper

coloured wire (or the ribbed insulation) to the red or positive terminal

on the left channel speaker, do the same at the right channel speaker.

3. LEFT CHANNEL INPUTS

(BALANCED/UNBALANCED)

Before making or changing input connections to the amplifier, make

certain that the Power is Off.

The S200 amplifier is equipped with two input connectors for each

channel. The RCA phono jack is a conventional "unbalanced" input.

The three-hole XLR socket is a professional "balanced" input. You

may use either type of input, but not both.

If your preamplifier has only conventional outputs with RCA phono

jacks, connect an audio connecting cable from the left channel

output of the preamplifier to the left channel UNBALANCED input of

the S200. Set the BALANCE switch to UNBAL.

If your preamplifier has balanced XLR outputs, connect a three-

conductor cable from your left channel preamplifier output to the

left-channel XLR input on the S200, and set the BALANCE switch to

BAL. If your audio dealer does not have the appropriate cables,

purchase balanced "microphone" cables from a shop that sells

professional recording equipment. The end of the cable that has a

"male" XLR plug (with three metal pins) should be connected to the

S200 amplifier. The end of the cable that has a "female" XLR socket

(with three holes) should be connected to your preamplifier.

An XLR plug is "keyed" so that it fits into the socket only one way. If

there is a set-screw in the barrel of the plug, align it with the top of

the connector. Push the plug fully into the XLR socket until it latches

in place.

The three pins of an XLR type ("Cannon") connector are numbered.

Pin 2 is the signal "hot" connection in the S200, Pin 2 is connected

directly to the center pin of the unbalanced RCA phono jack. Pin 3 is

the signal return (signal ground) connection. Pin 1 is the chassis earth

(ground), to which the shield of a balanced-wire cable is connected.

UNPLUGGING

The XLR socket has a latching feature that prevents the connector

from being pulled out by accident. Before disconnecting an input

cable, turn off the Power. Use one hand to press the latching tab

above the XLR socket while using the other hand to pull the XLR

plug out.

4. RIGHT CHANNEL INPUTS

(BALANCED/UNBALANCED)

Make connections to the right channel input in the same way that

you did for the left channel.

5. INPUT SELECT (BALANCED/UNBALANCED)

Set this switch to match your selection of input connector. Set to

UNBAL if you have connected a cable from your preamplifier to the

RCA phono input jacks. Set the switch to BAL if you are making

connections to the balanced XLR inputs.

Normally the choice of input connector is determined by the output

connectors on your preamplifier. If your preamplifier has balanced

outputs, use three-conductor cables equipped with XLR connectors.

If your preamplifier has only "unbalanced" connections with RCA

phono jacks, use the corresponding inputs on the S200.