User manual ROTEL RP-400

[. . . ] 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. [. . . ] Make sure that the shelf or cabinet can support its weight. AC Power Input The RP-400 is supplied with the proper AC power cord. Use only this cord or an exact equivalent. A heavy duty multi-tap power outlet strip may be used, but only if it is rated to handle the current demand of the RP-400. Be sure the Power Switch on the front panel of the RP-400 is turned off. Then, plug one end of the cord into the AC power connector - on the back panel of the amplifier. Plug the other end into an appropriate AC outlet. Your RP-400 is configured at the factory for the proper AC line voltage in the country where you purchased it (USA: 120 volts/ 60 Hz, Europe: 230 volts/50 Hz). The AC line configuration is noted on a label on the back panel. NOTE: Should you move your RP-400 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. 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. It is useful to think of the RP-400 as three stereo amplifiers in a single chassis. A rear panel switch adjacent to the inputs can select LINK to be On or Off for the first pair of amplifier channels. For Stereo mode: Slide the switch associated with the desired pair of amplifier channels to the right or OFF position. Use both LEFT and RIGHT input connectors, and connect one speaker to each pair of speaker connectors. nOTE: For groups "B" and/or "C" , you can also place the INPUT SELECT switch to the ON position for Stereo mode. This routes the input signals from the "A" group to the inputs for that pair of amplifier channels. 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. [. . . ] In Stereo mode: Connect the left speaker to the pair of speaker connectors labeled LEFT. connect the right speaker to the speaker connectors labeled RIGHT. Follow the labels printed above the connectors, observe correct polarity. The RP-400 has three groups of speaker connectors, one for each pair of amplifier channels. [. . . ]