Owner's Manual

ULTRA-DI DI400P
Thank you for showing condence in BEHRINGER
products by purchasing the ULTRA-DI DI400P.
The DI400P is a high-performance passive direct
injection box.
◊ Please read the safety instructions that
appear at the end of this document.
Being on stage or in the studio, musicians often look
for ways to connect certain signal sources directly
to the mixing console. Even though this approach
has obvious advantages, there are still some
technical hurdles obstructing its implementation.
For example, keyboards seldom feature balanced
outputs, and guitars can not be directly connected
to mixing consoles because of the high impedance
of guitar signals.
The DI400P lets you directly tap into a
high-impedance, unbalanced signal—for example,
the signal between a guitar and a guitar amp.
From there on, you can feed the signal directly to a
mixing console.
1. Control Elements and Connections
(1)
(3)
(2)
(4)
Fig. 1: Top view
(1) + (2) PARALLEL IN/OUT (¼" TS):
These connectors are used for connecting
unbalanced signal sources. Because both
connectors are wired in parallel, they can be
used both as an input and as a direct output to
loop the signal through to a monitor amplier.
(3) OUTPUT (XLR): This is the balanced mic-level
output. Use a high-quality balanced
microphone cable to establish connection.
(4) Using the GND LIFT (ground lift) switch,
youcan fully separate input and output
grounding. Depending on how the equipment
to which your DI400P is connected is
grounded, using the GND LIFT switch lets you
lower hum noise or ground loops. When the
GNDLIFT switch is in LIFT position, the ground
connection is interrupted.
The SERIAL NUMBER of the DI400P is located
at the bottom.
2. Connecting an Instrument Signal
Instrument Input
Parallel Out
Microphone Input
In
Out
Fig. 2: Guitar → DI-box → guitar amp/mixer
This illustration shows the application ofaDI-box.
The signal feeding the amplier 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 eects, insert the DI400P after the eects
device, so that you can monitor the eects via the
PA system or the recording as well.