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ULTRA-DI PRO DI800
3. APPLICATIONS
Fig. 2.2: Rear panel connectors
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.
The mains connection is achieved via the standard IEC
connector. A matching power cord is included.
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 www.behringer.com.
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).
3. APPLICATIONS
3.1 Connecting a guitar/bass signal
Fig. 3.1: Guitar ß DI-box ß guitar amp/mixer
This illustration shows the standard application of a DI-box.
The signal feeding the amplifier remains unchanged; it is simply
taken and routed into the amp. The low-impedance balanced
signal is forwarded to the mic input of the mixing console. This
application has its advantages particularly with bass guitars,
because very few microphones can linearly transmit bass
frequencies with high signal levels. If you are using effects,
insert the DI800 after the effects device, so that you can monitor
the effects via the PA system or the recording as well.
3.2 Converting output signals of a keyboard,
DJ mixer, etc.
Fig. 3.2: DJ mixer ß DI-box ß mixer
This configuration lends itself to use with a keyboard, DJ mixer
or other mono/stereo signal sources with line level, particularly
when using long cables (e.g. connecting to a FOH mixer). The
signal can be looped through to another amplifier via the LINK
output. Thus, you get a monitor signal that is independent from
the actual FOH signal (useful for keyboarders, DJs etc.).
3.3 Converting a microphone signal
Average-quality microphones often feature unbalanced, high-
impedance outputs. The DI800 lets you wire such mics to the
mixing console using long cables without running the danger of
inducing hum or interference noise. To this end, the microphone
has to be connected to the input of the DI-box, and the DI-boxs
output needs to be connected to the mic input on the mixing console.
Fig. 3.3: Microphone connection
3.4 Taking a signal from a speaker output
Sometimes, you want to take a signal directly from a speaker
output, even though just one speaker output is available. By
using the -30 dB switch on the DI800, you can connect your
mixing console to an amp output (up to 3,000 Watts into 4 Ohms),
without worrying that the DI800 will be damaged due to overload!
If you are using a tube amp, you should connect a speaker or a
similar load resistance to the LINK output.
Fig. 3.4: Connection to a power amp output
+ Before connecting to a loudspeaker connector,
please make sure that the GROUND LIFT switch is
in the ON position (no ground connection). This
prevents accidental shorting of the amp output.
Besides, the tip of the input connector should be
connected to the speaker connector marked with
red. The metal casing of the DI800 should in no case
have physical contact to other equipment.