5

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.

6

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.

7

8

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.

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.

Page 2 Page 4
Page 3
Image 3
Behringer ULTRA-DI DI100 manual DI100 Configurations, Tapping signal from the Bassguitar, Guitar ß DI ß Guitar Amp/Mixer
Page 2 Page 4

ULTRA-DI DI100 specifications

The Behringer ULTRA-DI DI100 is a professional direct injection box designed for a wide range of audio applications. Musicians, sound engineers, and producers alike appreciate the robust features and affordable price point of this device, making it a popular choice in the world of music production and live sound reinforcement.

One of the standout features of the DI100 is its high-quality, low-noise performance. The device is equipped with a high-impedance 1/4" input jack that allows you to connect instruments such as electric guitars, basses, and keyboards directly to the sound system, ensuring pristine audio quality. The balanced XLR output provides a clean signal with minimal interference, which is essential when connecting to mixing consoles or recording interfaces.

The DI100 is built on advanced technology that ensures versatile connectivity and compatibility with various audio sources. It operates with a frequency response of 10 Hz to 30 kHz, ensuring that it captures a wide range of sound frequencies, making it ideal for both live performances and studio recordings. The 48V phantom power capability allows the DI100 to work seamlessly with professional audio equipment, providing additional flexibility when integrating it into complex audio setups.

Portability is another significant aspect of the Behringer ULTRA-DI DI100. Its compact and lightweight design makes it easy to carry around, allowing musicians to easily transport it between gigs and studio sessions. The robust metal housing guarantees durability, protecting it against the rigors of travel and performance.

In addition to its stellar performance, the DI100 features a ground lift switch. This allows users to eliminate hum and buzz often caused by grounding issues, ensuring a clean and noise-free signal. This can be particularly beneficial in live performance situations where electrical interference can compromise sound quality.

With its blend of affordability, durability, and high-performance capabilities, the Behringer ULTRA-DI DI100 is an excellent investment for those seeking quality audio solutions. Whether you are a solo musician, part of a band, or a professional audio technician, this direct injection box provides the tools necessary to achieve superior sound quality in any setting. Its consistent reliability and user-friendly design make it a must-have accessory for audio professionals worldwide.
Top Page Image Contents