Behringer Ultra-DI DI100 Manuel D’Utilisation

The -20 dB attenuation switches greatly increase the operating range of the ULTRA-DI. From the low-level

signals of a high impedance microphone or guitar to the hot speaker terminals of a P. A. amplifier. Depressing

both will give 40 dB attenuation.

Only use the -20 dB switches if you are sure the ULTRA-DI is clipping (overloading) and not your mic pre-

amp. Always use as little attenuation as possible to get the best possible signal-to-noise ratio.

OUTPUT. 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.

Battery compartment. 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.

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.