User manual ROTEL RMB-1066

[. . . ] Connect the component to the power outlet only with the supplied power supply cable or an exact equivalent. Do not route the power cord where it will be crushed, pinched, bent at severe angles, exposed to heat, or damaged in any way. Pay particular attention to the power cord at the plug and where it exits the back of the unit. The power cord should be unplugged from the wall outlet if the unit is to be left unused for a long period of time. [. . . ] unlike many designs , the RMB-1066's protection circuit is independent of the audio signal and has no impact on sonic performance. Instead, the protection circuit monitors the temperature of the output devices and shuts down the amplifier if safe limits are exceeded. In addition, the RMB-1066 includes overcurrent protection which operates only when load impedances drop too low. This protection is independent for each of the three pair of channels with separate front panel PROTECTION LEDS for each. Should a faulty condition arise, the amplifier will stop playing and one or more of the PROTECTION LEDS on the front panel will light. If this happens, turn the amplifier off, let it cool down for several minutes, and attempt to identify and correct the problem. When you turn the amplifier back on, the protection circuit will automatically reset and the PROTECTION LEDS 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. NOTE: Should you move your RMB-1066 to another country, it is possible to configure your amplifier for use on a different line voltage. Opening the enclosure of the RMB-1066 exposes you to dangerous voltages. Consult a qualified technician or the Rotel factory service department for information. If you are going to be away from home for an extended period of time, it is a sensible precaution to unplug your amplifier. 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 slide switch must be placed to the left position (see previous section). This input accepts any control signal (AC or DC) ranging from 3 volts to 30 volts. This pair of RCA connections can be used to pass unprocessed input signals to another audio component, for example to "daisychain" an additional amplifier to drive a second set of speakers. the input signals connected to the "A" inputs are always available at SIGNAL OUTPUT LINK connections. These input signals can also be linked to the "B" and/or "C" inputs by playing the INPUT SELECT switch associated with that pair of inputs in the LINK position. It is useful to think of the RMB-1066 as three stereo amplifiers in a single chassis. [. . . ] If you are using banana plugs, connect them to the wires and then plug into the backs of the speaker connectors. The collars of the speaker connectors should be screwed in all the way (clockwise). If the amp is getting AC power, but is producing no sound, check the PROTECTION INDICATORS on the front panel. If not, check all of your connections and control settings on associated components. [. . . ]