Behringer EURORACK UB802 Manual - Page 9

9 EURORACK UB1202/UB1002/UB802/UB502 User Manual +48 V The red +48 V LED lights up when phantom power is on. The PHANTOM switch activates the phantom power supply on the XLR connectors of all mono channels. ◊ Please do not connect microphones to the mixer (or the stagebox/wallbox) as long as the phantom power supply is switched on. Connect the micro-phones before you switch on the power supply. In addition, the monitor/PA loudspeakers should be muted before you activate the phantom power supply. After switching on, wait approx. one minute in order to allow system stabilization. POWER The blue POWER LED indicates that the console is powered on. Level indicator The high-precision 4-segment display accurately displays the relevant signal level. LEVEL SETTING: To correctly set the gains of the channels, first set the LEVEL controls of the input channels to their center positions (0 dB). Then use the GAIN controls to increase the input amplification until signal peaks show 0 dB on the level meter. When recording to digital recorders, the recorder's peak meter should not go into overload. While analog recorders can be overloaded to some extent, creating only a certain amount of distortion (which is common and often desirable), digital recorders distort quickly when overloaded. In addition, digital distortion is not only undesirable, but also renders your recording completely useless. ◊ The peak meters of your EURORACK display the level virtually independent of frequency. A recording level of 0 dB is recommended for all signal types. 3. Installation 3.2 Audio connections You will need a large number of cables for different applications. The illustrations below show how the connectors should be wired. Be sure to use only high-grade cables. Please use commercial RCA cables to connect the 2-track inputs and outputs. You can, of course, also connect unbalanced devices to the balanced inputs/outputs. To do this, use either mono plugs or stereo plugs with the ring and sleeve bridged (pins 1 and 3 in the case of XLR connectors). ◊ Caution! Never use unbalanced XLR connectors (PIN 1 and 3 connected) on the MIC input connectors when using the phantom power supply. Balanced use with XLR connectors 21 3 input 1 = ground/shield 2 = hot (+ve) 3 = cold (-ve) 12 3 output For unbalanced use, pin 1 and pin 3 have to be bridged Fig. 3.1: XLR connections Unbalanced ¼" TS connector strain relief clamp sleeve tip 3.1 Mains connection AC POWER IN Connect the power supply to the 3-pin mains connector on the rear of the console. Use the AC adapter supplied to connect the console to the mains. The adapter complies with all applicable safety standards. ◊ Please use only the power supply unit provided with the console. ◊ Never connect the EURORACK to the power supply unit while the latter is connected to the mains! First connect the console to the power supply unit, then connect the power supply unit to the mains. ◊ Please note that both the power supply unit and the mixing console heat up considerably during operation. This is completely normal. Fig. 3.2: 1/4" mono plug sleeve (ground/shield) tip (signal)