S200 Stereo Power Amplifier GB Owner's Manual F D E I P S Manuel d'Installation Bedienungsanleitung Manual del Usuario Manuale delle Istruzioni Manual do Proprietário Bruksanvisning IMPORTANT SAFETY INSTRUCTIONS CAUTION ATTENTION: 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. 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. 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. 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. ATTENTION CAUTION 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 tunerpreamplifier, 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 leadin 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. 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. 2 FRONT PANEL CONTROLS ©1998 NAD S200 ©1998 NAD S200 REAR PANEL CONNECTIONS FIGURE 1 3 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. 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. REAR PANEL CONNECTIONS GB 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. 4 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. If your preamplifier has balanced XLR outputs, connect a threeconductor 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 professi ...