Behringer DI800 User Manual - Page 5

ULTRA-DI PRO DI800 1.1 Before you get started 1.1.1 Shipment Your ULTRA-DI PRO was carefully packed at the assembly plant to assure secure transport. Should the condition of the cardboard box suggest that damage may have taken place, please inspect the unit immediately and look for physical indications of damage. + Damaged units should NEVER be sent directly to us. Please inform the dealer from whom you acquired the unit immediately as well as the transportation company from which you took delivery of the unit. Otherwise, all claims for replacement/repair may be rendered invalid. 1.1.2 Initial operation Please make sure the unit is provided with sufficient ventilation, and never place the ULTRA-DI PRO on top of an amplifier or in the vicinity of a heater to avoid the risk of overheating. + Before plugging the unit into a power socket, please make sure you have selected the correct voltage: The fuse compartment near the power plug socket contains three triangular markings. Two of these triangles are opposite one another. The voltage indicated adjacent to these markings is the voltage to which your unit has been set up, and can be altered by rotating the fuse compartment by 180°. ATTENTION: This does not apply to export models that were for example manufactured only for use with 120 V! + If you alter the unit’s voltage, you must change the fuse accordingly. The correct value of the fuse needed can be found in the chapter “SPECIFICATIONS”. + Faulty fuses must be replaced with fuses of appropriate rating without exception! The correct value of the fuses needed can be found in the chapter “SPECIFICATIONS”. Power is delivered via the cable enclosed with the unit. All requiered safety precautions have been adhered to. + Please make sure that the unit is grounded at all times. For your own protection, you should never tamper with the grounding of the cable or the unit itself. Fig. 2.1: Front panel control elements The -30 dB attenuation switch increases the operating range of the DI800 considerably, from low signal levels of a high-impedance mic or a guitar, all the way to speaker connectors of a guitar amplifier. + Use the -30 dB switch only when the DI800 starts distorting (and not the mic preamp). When this is not the case, avoid using this function, since the lowest amount of attenuation is desirable in order to obtain the lowest signal-to-noise ratio possible. Using the GND LIFT switch, you can fully separate input and output grounding. Depending on how the equipment to which your DI800 is connected is grounded, using the GND LIFT switch lets you lower hum noise or ground loops. When the GND LIFT switch is depressed, the ground connection is interrupted (the LED is lit red). When the switch is in the PHANTOM OR MAINS POWER ON setting, the LED is lit green. The +20 dB switch increases the input signal level by 20 dB. Use the POWER switch to power up your DI800. The POWER switch should always be in the “Off” position when you are about to connect your unit to the mains. + Attention: The POWER switch does not fully disconnect the unit from the mains. Unplug the power cord completely when the unit is not used for prolonged periods of time. 1.1.3 Warranty Please take a few minutes and send us the completely filled out warranty card within 14 days of the date of purchase. You may also register online at www.behringer.com. The serial number needed for the registration is located at the top of the unit. Failure to register your product may void future warranty claims. 2. CONTROL ELEMENTS The BEHRINGER ULTRA-DI PRO features eight identically built channels. The control elements described here refer therefore to all channels. The INPUT connector is used for connecting unbalanced as well as balanced signal sources. The LINK connector is the unbalanced parallel output of the ULTRA-DI PRO, used for example for connecting to an input of a monitor amplifier. The input signal is also available in its unbalanced form at the UNBAL OUT connector. Fig. 2.2: Rear panel connectors The BAL OUT connectors (1 - 8) are the balanced miclevel outputs of the channels 1 to 8. Use a high-quality balanced microphone cable to establish connection. The mains connection is achieved via the standard IEC connector. A matching power cord is included. SERIAL NUBMER. The serial number is located on the top of the unit. Please take a few minutes and send to us a completely filled out warranty card within 14 days of the original date of purchase. Otherwise, warranty claims may be rendered invalid. Or fill out the warranty information online at www.behringer.com. 2. CONTROL ELEMENTS 5