User manual ROTEL RA-970BX

[. . . ] 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. [. . . ] Shipping or moving the RA-970BX in anything other than the original packing material may result in severe damage to your amplifier. Be sure to keep the original sales receipt. It is your best record of the date of purchase, which you will need in the event warranty service is ever required. Before any home theater component can be THX Ultra certified, it must incorporate the THX technologies and also pass a rigorous series of quality and performance tests. Only then can a product feature the THX Ultra logo, which is your guarantee that the Home Theater products you purchase will give you superb performance for many years to come. The power switch is located in the center of the front panel of your amplifier. To turn the amplifier on, 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. The RA-970BX generates heat as part of its normal operation. The heat sinks and ventilation openings in the amplifier are designed to dissipate this heat. THX engineers developed patented technologies to accurately translate the sound from the movie theater environment into the home, correcting the tonal and spatial errors that occur. To use this feature the toggle switch must be set to the ON position. This input accepts any control signal (AC or DC) ranging from 3 volts to 30 volts. NOTE: Should you move your RA-970BX 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 RA-970BX exposes you to dangerous voltages. Consult a qualified technician or the Rotel factory service department for information. Instead, the protection circuit monitors the temperature of the output devices and shuts down the amplifier if temperatures exceed safe limits. In addition, the RA-970BX includes overcurrent protection which operates only when load impedances drop below 2 ohms. This protection is independent for the left, right and center channels with separate front panel PROTECTION LEDS for each. Most likely, you will never see this protection circuitry in action. [. . . ] Connect XLR audio interconnect cables from each of the outputs from the preamplifier or signal processor to the corresponding BALANCED INPUT of the RA-970BX. The size and quality of the wire can have an audible effect on the performance of the system. Standard speaker wire will work, but can result in lower output or diminished bass response, particularly over longer distances. in general , heavier wire will improve the sound. [. . . ]