User manual ROTEL RB-870BX

[. . . ] Immediately stop using the component and have it inspected and/or serviced by a qualified service agency if: · The unit has been dropped or damaged in any way Place the unit on a fixed, level surface strong enough to support its weight. The RB-870BX is a high-power, two-channel power amplifier, providing the highest level of audio performance. Discrete output devices, a massive power supply, premium components, and Rotel's Balanced Design ensure superb sound quality. high current capability allows the RB-870BX to drive the most demanding loudspeakers. [. . . ] Please contact your authorized Rotel audio dealer for answers to any questions you might have. in addition , all of us at Rotel welcome your questions and comments. Save the RB-870BX shipping carton and all enclosed packing material for future use. Shipping or moving the RB-870BX in anything other than the original packing material may result in severe damage to your amplifier. Fill out and send in the owner's registration card packed with the RB-870BX. It is your best record of the date of purchase, which you will need in the event warranty service is ever required. When used in a highquality music or home theater system, your Rotel amplifier will provide years of musical enjoyment. The heat sinks and ventilation openings in the amplifier are designed to dissipate this heat. 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 considerable bulk. This input accepts any control signal (AC or DC) ranging from 3 volts to 30 volts. Instead, the protection circuit monitors the temperature of the output devices and shuts down the amplifier if temperatures exceed safe limits. However, should a faulty condition arise, the amplifier will stop playing and the LED indicator on the front panel will light up. If this happens, turn the amplifier off, let it cool down for several minutes, and attempt to identify and correct the problem that caused the protection circuitry to engage. When you turn the amplifier back on, the protection circuit will automatically reset and the indicator LED should go out. 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. If the protection circuitry triggers repeatedly and you are unable to isolate and correct the faulty condition, contact your authorized Rotel dealer for assistance in troubleshooting. The RB-870BX gives you a choice of two different kinds of input connections ­ conventional unbalanced RCA type connections (such as found on nearly all audio equipment) or balanced XLR-type connections for use with some high-end preamps or digital processors featuring this lower noise connection. We recommend using loudspeakers with a nominal impedance of 4 ohms or higher with the RB-870BX. You should exercise some caution in driving multiple pairs of speakers in parallel configuration, because the effective impedance the amplifier sees is cut in half. [. . . ] The wire may have clear insulation with different color conductors (copper and silver). The RB-870BX has two pairs of color coded binding posts on the back panel. These connectors accept bare wire, connector lugs, or dual banana type connectors (except in the European Community countries where their use is not permitted). Give yourself enough slack so you can move the components enough to allow access to the speaker connectors. [. . . ]