User manual ROTEL RB-993

[. . . ] If the unit is exposed to moisture, or a foreign object gets into the enclosure, immediately disconnect the power cord from the wall. Take the unit to a qualified service person for inspection and necessary repairs. Read all the instructions before connecting or operating the component. Keep this manual so you can refer to these safety instructions. [. . . ] When used in a high-quality music or home theater system, your Rotel amplifier will provide years of musical enjoyment. the RB-993 is a sophisticated five-channel power amplifier. Its digital amplifier circuitry, switching power supply, premium components, and Rotel's Balanced Design ensure superb sound quality. High current capability allows the RB-993 to drive difficult speaker loads with ease. The RB-993 generates heat as part of its normal operation. The heat sinks and ventilation openings in the amplifier are designed to dissipate this heat. the ventilation slots in the top cover must be unobstructed. There should be 10 cm (4 inches) of clearance around the chassis, and reasonable airflow through the installation location, to prevent the amplifier from overheating. Likewise, remember the weight of the amplifier when you select an installation location. Make sure that the shelf or cabinet can support its weight. The RB-993 is supplied with the proper AC power cord. In most cases, the protection circuitry activates because of a fault condition such as shorted speaker wires, or inadequate ventilation leading to an overheating condition. In very rare cases, highly reactive or extremely low impedance speaker loads could cause the protection circuit to engage. To turn the amplifier on (or to activate either of the optional automatic power-on modes), push the switch in. The LED indicator above the switch will light, indicating that the amplifier is turned on. To turn the amplifier off, push the button again and return it to the out position. To use this feature the adjacent switch must be placed to the 12V TRIG position (see previous section). This input accepts any control signal (AC or DC) ranging from 3 volts to 30 volts. See Figure 2 The RB-993 has standard unbalanced RCA-type input connectors, the type used on nearly all audio equipment. There is an RCA input for each of the five amplifier channels. These RCA inputs accept audio signals from preamplifiers or surround sound processors. The RB-993 has five sets of speaker connectors, one for each amplifier channel. [. . . ] See Figure 2 The RB-993 has two color coded terminals for each amplifier channel. These speaker connectors accept bare wire, connector lugs, or "banana" type connectors (except in the European Community countries where their use is not permitted). route the wires from the RB-993 to the speakers. Give yourself enough slack so you can move the components to allow access to the speaker connectors. [. . . ]