User manual BEHRINGER DI100

[. . . ] That is why a good DI-box is distinguishable from a bad one. As with a power amplifier and speakers the impedance to a device determines the performance. With a good power amplifier the load impedance only affects the maximum power output. Whereas on some other devices the impedance governs other properties as well. [. . . ] This is the balanced microphone level output of the ULTRA-DI. Connection to the microphone input should be made with a standard high quality balanced cable. Never connect pin 2 or 3 to pin 1 and never disconnect the shield from pin 1, or the unit will not work on phantom power. Use the GROUND LIFT switch to either connect the ground of input and output or keep them completely separate. Depending on the grounding of the connected devices linking or disconnecting will reduce hum or prevent ground loops. GROUND LIFT ON means no interconnection. Loosen the screw to open the compartment and to replace the 9 V battery. When the ULTRA-DI is switched on battery power the LED blinks, when it stops blinking it is time to change the battery. + 7 8 2. DI100 CONFIGURATIONS The next section will show several different ways the ULTRA-DI can be hooked up. 2. 1 Tapping signal from the (Bass)guitar Fig 2. 1: Guitar ß DI ß Guitar Amp/Mixer This figure shows the standard application of any direct injection box. The signal to the amplifier is unaffected, it is just tapped off to be routed to the microphone input of the mixer. Especially bass guitars benefit from this application. It is difficult to find a microphone which handles high level low frequencies well and with a linear frequency response. Using the ULTRA-DI will give you clean and crisp sound. Connect the ULTRA-DI after any effects devices so that their effect will be heard over the P. A. -system or on the recording. If the mixer provides phantom power between 20 V and 52 V, the internal battery of the DI100 will automatically be detached. You should chose this possibility whenever possible to save battery power. 2. 2 Converting the output of a Keyboard / DJ-mixer / Headphone plug Fig 2. 2: DJ-mixer ß 2 x DI ß Mixer This configuration can be used with a keyboard, DJ-mixer, headphone output, drum kit or any (stereo or mono) line source. In all cases where you want to run long lines, for instance to the FOH (Front Of House) desk. In most cases the best setting is achieved by depressing one of the -20 dB pad buttons to avoid overloading the FOH desk input. The signal can be linked through to another amplifier, if the keyboard player / DJ / etc. wants to have a monitor connected independent of the foldback mix. The ULTRA-DI acts as both a ground isolator and an unbalanced to balanced converter. 2. 3 Converting a microphone from high impedance unbalanced to low impedance balanced Sometimes all thats available (especially when all other mics are in use) is a unbalanced high impedance microphone with an unbalanced jack. With the ULTRA-DI long cable runs to the console can be established without fear of picking up noise and hum. Just plug the jack into the input and connect the output to the consoles mic in. 2. 4 Tapping a signal from a power amplifier output When no line out is available it is possible to connect an amplifier output directly to the DI100 (for example, recording direct from a guitar amplifier, TV-speaker, etc). [. . . ] Under the terms of this warranty, BEHRINGER shall not be held responsible for any cost resulting from such a modification/adaptation. Free inspections and maintenance/repair work are expressly excluded from this warranty, in particular, if caused by improper handling of the product by the user. This also applies to defects caused by normal wear and tear, in particular, of faders, potentiometers, keys/buttons and similar parts. Damages/defects caused by the following conditions are not covered by this warranty: s s s misuse, neglect or failure to operate the unit in compliance with the instructions given in BEHRINGER user or service manuals. [. . . ]