User manual NAD 925

[. . . ] 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 away 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. [. . . ] each input connector , and set of loudspeaker output terminals , is directly connected to that channel's circuit board. furthermore , this modular design increases reliability and thermal efficiency. The input circuit uses a totally new dual differential input topology that operates in true Class-A mode. The special HolmgrenTM toroidal transformer has less hum and magnetic leakage than conventional toroidal transformers, but retains the usual benefits of high efficiency and high power-to-weight ratio. This provides highly effective protection that does not effect audio performance. Each channel is protected against excess temperature, DC fault and loudspeaker short-circuit. The 925THX's inherently conservative, high-voltage/high-current output stage has been designed for years of trouble-free service. NAD was the first company to introduce a THX certified power amplifier. in that tradition , the 925THX easily passes Lucas Films' stringent THX performance requirements. As a result the NAD 925THX will handle the most demanding signals with ease, and yet preserve every subtle audio detail in the most demanding THX and Dolby Surround systems. 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 is 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. [. . . ] Any residual hum or hiss that does not go away when the Volume is turned down). *] (1) Strip off a half-inch (1 cm) of insulation from each speaker wire. Unscrew the knob, insert the bare wire into the opening at the base of the binding post, and tighten the knob until it grasps the wire securely. Check to be sure that there are no loose strands of wire touching the chassis or an adjacent terminal. [. . . ]