User manual INTEGRA RESEARCH RDA-7

[. . . ] Contents Seven Channel Amplifier RDA-7 Instruction Manual Before using Operations Connections Thank you for purchasing the Integra RESEARCH Seven Channel Amplifier. Please read this manual thoroughly before making connections and plugging in the unit. Following the instructions in this manual will enable you to obtain optimum performance and listening enjoyment from your new Seven Channel Amplifier. Please retain this manual for future reference. Appendix WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). [. . . ] If the Power switch is turned on, then one of these indicators will be lit. On: Lights blue when Power is supplied from the AC mains Power supply. Standby: Lights red when no signal is input from the 12V TRIGGER IN terminal and the RDA-7 is in the Standby state. Note: If the Power switch is pressed and neither indicator lights, check that the Power cord is properly connected and that a fuse has not blown. If the indictors still do not light, turn off the RDA-7, disconnect the Power cord, and contact an Onkyo service station or representative. If the On indicator lights blue and the Standby indicator flashes red, the protection circuitry of the RDA-7 has activated. The protection circuitry activates if a problem such as a speaker cord shorting or the temperature of the RDA-7 rising excessively occurs. Turn off the RDA-7, remove the cause of the problem, and then turn the RDA-7 back on. If the problem is still not solved, turn off the RDA-7, disconnect the power cord, and contact an Onkyo service station or representative. Pressing this switch connects the RDA-7 to the main Power outlet and the On indicator lights blue. If you want to operate the RDA-7 using a 12-volt trigger, connect to the 12V TRIGGER terminal of a control amplifier or preamplifier and leave the Power switch of the RDA-7 set to On. For example, to control the RDA-7 while it is connected to the RDC-7 AC controller, connect the 12V TRIGGER A jack of the RDC-7 to the 12V TRIGGER IN jack of the RDA7 with a 3. 5-mm (1/8-inch) mini-jack cable. If a plug is connected to the 12V TRIGGER IN jack: The signal reaches the 12V TRIGGER, the On indicator lights blue. When there is no signal at the 12V TRIGGER, the Standby indicator lights red. 9 Rear panel facilities and connections Caution · Do not connect the Power cord until you have finished all other connections. · Read the instructions that came with the other components you are connecting. · Do not make connections to input or output jacks while the RDA-7 is turned on (Power · Always turn the volume of the pre-amplifier down before turning on the RDA-7. SURROUND BACK RIGHT SURROUND RIGHT RIGHT CENTER LEFT SURROUND LEFT on). SURROUND BACK LEFT INPUT SELECT INPUT SELECT INPUT SELECT INPUT SELECT INPUT SELECT INPUT SELECT INPUT SELECT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT SPEAKER IMPEDANCE 4 OHMS MIN. PER EACH SPEAKER TERMINAL FUSE AC INLET 12V TRIGGER IN OUT SEVEN CHANNEL AMPLIFIER MODEL NO. RDA-7 Precaution for connection This unit comprises 7 independent power amplifiers, each being capable of reproducing the same quality sound through its channel. Note that you should connect an input source and a speaker to each channel in use. For channels that are not in use, we recommend that you do not connect any input source or speaker. 2. Disconnecting the input terminal Pull out the connection cord while holding down the lever. Push Balanced Input (XLR terminal) Connect controllers or pre-amplifiers with balanced outputs for high-quality sound. Note: · When using this balanced connection for a specific channel between the pre-amplifier and RDA-7, set the INPUT SELECT switch to the XLR input side to select balanced input. Next, use high-quality cables and connect the balanced output from the pre-amplifier to the corresponding balanced input on the RDA-7. · Do not connect anything to the RCA-type audio input jack. 2. [. . . ] If the humming stops, reconnect the cables one at a time to determine the faulty cable. If the hum continues after all input cables are reconnected, contact an Onkyo service station or representative. 3. AC ground terminal loop An AC ground terminal loop will cause the loudest hum. When grounding a system that uses a power cord with a three-pronged plug, be aware of components with a grounding terminal. [. . . ]