User manual HARMAN KARDON SIGNATURE21

[. . . ] 2. 1 Multichannel Amplifier Owner's Manual Owner's Manual Signature 2. 1 Multichannel Amplifier Table of Contents Introduction . 9 CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. The lightning flash with 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 appliance. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT. ATTENTION: POUR EVITER LES CHOCS ELECTRIQUES, INRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU'AU FOND. 80 Crossways Park West Woodbury, NY 11797 www. harmankardon. com ©1997 Harman Kardon, Incorporated Signature 2. 1 Congratulations! [. . . ] When making connections with RCA-type plugs on interconnect cables, make certain to gently but firmly insert the plugs into the jacks on the rear of the 2. 1. Connect the other end to the jack on the 2. 0 that carries the same identification. Remote Turn-On Using an External AC-to-DC Converter If the 2. 1 is not used with a compatible Harman Kardon product, it is still possible to activate the unit for automatic turn-on. To control the amplifier in this manner you will need a small UL/CSA approved class 2 AC-to-DC power converter capable of delivering a 6- to 12-volt DC signal. The DC voltage should terminate in a standard 3. 5 mm mono miniplug, with the tip of the plug "positive" (+). This type of converter may be obtained as a "Power Adapter" from many electronics retailers. Consult your dealer for further information. Signature 2. 1 Cable with a gauge of 16 may be used for short runs of less than ten feet. We do not recommend the use of cables with an AWG equivalent of 18 or higher due to the power loss and degradation in performance that will occur. Cables run inside walls should have the appropriate markings to indicate listing with UL ("CL-2/CL-3"), CSA ("FT-4") or appropriate safety agency standards that may be required in your area. Questions about running cables inside walls should be referred to your installer or a licensed electrical contractor who is familiar with the NEC and/or the applicable building or electrical codes in your area. Important Note: When making speaker wire connections, be certain that none of the strands from one lead touch any other lead. This will cause a short circuit and may damage your amplifier or speakers. Damage from short circuits caused in this manner is not covered by the product warranty. Connections may also be made using spade lugs or standard 4 mm OD banana plugs. Before using a banana-type jack, make certain that the plastic screw caps on the 2. 1 are firmly tightened by turning them clockwise until they are snug against the chassis. This will ensure that the maximum surface area of the plug is in contact with the jack. Once the wire has been attached to the banana plug following the plug manufacturer's instructions, simply insert the banana plug into the hole provided on the rear of the colored screw caps on the terminal posts. Finally, run the cables to the speaker locations. It is highly recommended that the length of cable connecting any pair of speakers be identical. For example, make certain that the cable length connecting left and right front or left and right rear (surround) speakers is identical, even though one speaker may be physically closer to the amplifier than the other. Do not coil any excess cable, as this may become an inductor that creates frequency response variations in your system. Connect the wires to the speakers, again being certain to observe proper polarity. Remember to connect the negative or black wire to the matching terminal on the speaker. [. . . ] Note that the LED Indicator 3 will glow red. Turn the unit on, press the front panel Power Switch 1 until it is flush with the front panel. Once the switch is turned on, the 2. 1 will go into a brief warm-up mode, as indicated by the LED Indicator 3 flashing green. This is normal, and it protects your speakers from damage as the amplifier stabilizes. [. . . ]