Behringer ULTRA-DI PRO DI800 Manual - Page 7

7 ULTRA-DI PRO DI800 User Manual the original equipment packaging (Global Contact Information/ European Contact Information). Should your country not be listed, please contact the distributor nearest you. A list of distributors can be found in the support area of our website (http://behringer.com). Registering your purchase and equipment with us helps us process your repair claims more quickly and efficiently. Thank you for your cooperation! 2. Control Elements The BEHRINGER ULTRA-DI PRO features eight identically built channels. The control elements described here refer therefore to all channels. (1) The INPUT connector is used for connecting unbalanced as well as balanced signal sources. (2) Because both INPUT and LINK connectors are wired in parallel, the LINK TRS connector can be used both as an input and as a direct unbalanced output of the INPUT signal. For the latter, you can for example connect LINK with the input of a monitor amplifier. (3) The unbalanced input signal can be tapped into at the UNBAL OUT TRS connector - after passing through the amplification circuitry (see (4) and (6) ). Essentially, the signal is identical to the signal located at the XLR output in the back; the only difference is that it is unbalanced and has therefore no Ground Lift functionality (see (5) ). (2) (4) (6) (5) 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 (when the GND LIFT switch is not pressed). (6) The +20 dB switch increases the input signal level by 20 dB. (7) 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. ◊ To disconnect the unit from the mains, pull out the mains cord plug. When installing the product, ensure that the plug is easily accessible. If mounting in a rack, ensure that the mains can be easily disconnected by a plug or by an all-pole disconnect switch on or near the rack. (11) (10) (9) (8) Fig. 2.2: Rear panel connectors (1) (3) (5) (7) Fig. 2.1: Front panel control elements (4) The -30 dB attenuation switch increases the operating range of the DI800 considerably, from low signal levels of a highimpedance 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. (8) The BAL OUT connectors (1 - 8) are the balanced mic-level outputs of the channels 1 to 8. Use a high-quality balanced microphone cable to establish connection. (9) The mains connection is achieved via the standard IEC connector. A matching power cord is included. (10) Serial NUMBER. 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 behringer.com. (11) FUSE COMPARTMENT/VOLTAGE SELECTION: Before plugging the unit into a power socket, please make sure you have selected the correct voltage. Faulty fuses must be replaced with fuses of appropriate rating without exception. Some units feature a fuse compartment that can be operated in two different positions, allowing alternating between 230 V and 120 V. Attention: when using the unit outside of Europe (running on 120 V), you have to use a fuse with a higher rating (see chapter 5 "Specifications").