User manual NAD T973

[. . . ] 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. [. . . ] PowerDrive differs from Power Envelope in that it offers greater amplifier stability and low impedance drive capability, resulting in less distortion when driving real speakers with real program material WARNING - To reduce the risk of fire or electrical shock, do not expose the amplifier to rain or moisture. CAUTION - For units factory-set at 115 volts AC match the wide blade of the power plug to the wide slot of the power outlet, to prevent electrical shock. Turn off all the components in the system whenever connecting or disconnecting any audio signal wiring. Once all signal connections have been completed, turn down all the system's main volume control before turning the system components on. Then increase the volume control setting carefully to avoid damage to the system components. Read and follow all the safety instructions on the first page of this manual. To prevent a fire or shock hazard, do not place the amplifier where it will be exposed to any water or moisture. If liquid accidentally gets into the amplifier, immediately unplug the AC power cord. Do not operate the amplifier again until it has been examined by a service technician. the amplifier generates a moderate amount of heat , requiring ventilation. Do not place the amplifier in an enclosed area, such as in a bookcase or in a cabinet, unless it is very well ventilated. Be sure there is adequate room behind the amplifier for signal input and speaker output connections. If you want to locate the amplifier on a carpeted floor, place a board under it in order to prevent it from sinking into the carpet, blocking the air inlets on the bottom. Do not place the amplifier where it will be exposed to direct sun light for prolonged periods of time. NOTE: The amplifier's weight must always rest on its bottom feet. Never put the amp down on its rear panel, with its front panel facing up. The power transformer in the T 973 generates a magnetic hum field of moderate strength. Turntables (especially those with a moving-coil pickup cartridge) should not be located near the amplifier. Magnetic media, such as audio or video tapes and computer diskettes, should not be stored near the amplifier. The NAD T 973 houses seven individual amplifiers, each on separate circuit board. Each amplifier channel acts as a "mono block" within the chassis. each input connector , and set of loudspeaker output terminals , is directly connected to that channel's circuit board. [. . . ] When the amplifier is switched off completely from normal operation by means of the power switch, the Protection LEDs will light up and will fade out in a couple of seconds. NOTE: If you see the Protection LED light up during use, turn off the amplifier immediately. Check if all speaker wires are connected correctly and that none of the wires are damaged, causing a short circuit. Make sure there is adequate ventilation around the amplifier and that none of its ventilation slots, top or bottom, are blocked. [. . . ]