User manual ROTEL RMB-1066

[. . . ] WARNING: There are no user serviceable parts inside. refer all servicing to qualified service personnel. WARNING: To reduce the risk of fire or electric shock, do not expose the unit to moisture or water. Do not allow foreign objects to get into the enclosure. [. . . ] it must be ON for the signal sensing to work. Turning the switch OFF cuts power to the amplifier, regardless of whether or not a signal is present. Position, the amplifier is turned on automatically when a 12 volt trigger signal is applied to the 3. The amplifier will go into standby mode after 5 minutes with no signal if the +12 volt signal is not present. The front panel POWER SWITCH overrides this function. it must be ON for the +12V trigger to work. Turning the switch OFF cuts power to the amplifier, regardless of whether or not a trigger signal is present. Thermal and protection circuits protect the amplifier against potential damage in the event of extreme or faulty operating conditions. 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. Do not attempt to perform this conversion yourself. 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. [. . . ] (See Figure 2) In Bridged Mono mode: Connect each speaker to the POSITIVE terminals of the LEFT and RIGHT speaker connections on the back of the RMB-1066. There are BRIDGED + and ­ labels printed below each group of speaker terminals to assist in maintaining proper polarity. Observe correct polarity, and make sure the INPUT SELECT switch is set to the BRIDGED position. make sure that it is set to the ON position. [. . . ]