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DIB-100
Order Number 24.1140
ELECTRONICS FOR SPECIALISTS
ELECTRONICS FOR SPECIALISTS
DI Box
These instructions are intended for users
without any specific technical knowledge.
Please read these instructions carefully prior
to operating the unit and keep them for later
reference.
1 Operating Elements
and Connections
1
2
OUTPUT
GROUND LIFT
BAL. 600Ω
OFF
ON
DIB-100
INPUT
PAR. OUT
ATT.
UNBAL. 50kΩ
0dB
–20
–40
3
4
5
1 Balanced output (XLR)
2 Groundlift switch for separating the ground
connection between the input (3) and the out-
put (1)
3 Unbalanced input (6.3 mm jack)
4 Unbalanced feedthrough output (6.3 mm jack);
at this jack, the fed-through input signal of jack
(3) can be picked up
5 Switch "ATT" for attenuating the input signal
Musical instrument
ELECTRONICS FOR SPECIALISTS
2 Safety Notes
The unit corresponds to all relevant directives of
the EU and is therefore marked with
•
The unit is suitable for indoor use only. Protect
it against dripping water and splash water, high
air humidity and heat (admissible ambient tem-
perature range 0 – 40 °C).
•
For cleaning only use a dry, soft cloth. Do not
use any chemicals or water.
•
No guarantee claims for the unit and no liability
for any resulting personal damage or material
damage will be accepted if the unit is used for
other purposes than originally intended, if it is
not correctly connected, operated, or not re-
paired in an expert way.
If the unit is to be put out of operation
definitively, take it to a local recycling
plant for a disposal which is not harmful
to the environment.
3 Applications
The DI Box (Direct Injection) DIB-100 has been
designed for optimum connection of a musical
instrument with unbalanced, high-impedance
output to a balanced, low-impedance input of a
mixer (see fig. below). Due to the balanced con-
nection to the mixer, interferences can be pre-
vented even in case of long connection cables.
High signal levels can be reduced with the
attenuator and be matched to the mixer input.
Thus, the DI Box can also be directly connected
to the speaker output of an instrument amplifier
(e. g. guitar amplifier). Consequently, the effect
of the amplifier on the sound of the signal is
maintained.
4 Setting into Operation
The DI Box does not require a power supply.
4.1 Connecting the unbalanced input
Connect the output of the musical instrument to
the input jack "INPUT" (3). Alternatively, the input
jack can also be connected to the speaker output
of an instrument amplifier.
Caution! Never connect speaker outputs of
amplifiers operating in bridge circuit; the DI Box
will short-circuit them.
CH 1
5
0
0
-15
0
-15
5
0
5
0
C
L
1
DI Box
MONACOR INTERNATIONAL GmbH & Co. KG • Zum Falsch 36 • 28307 Bremen • Germany
Copyright
by MONACOR INTERNATIONAL. All rights reserved.
©
ELECTRONICS FOR SPECIALISTS
.
MMX-122
CH 2
CH3
CH 4
CH 5/6
CH 7/8
CH 9/10 CH11/12
5
5
5
5
5
10
0
10
0
10
0
10
0
10
0
10
0
0
0
0
0
0
0
+22
+10
+7
+15
-15
+15
-15
+15
-15
+15
-15
+15
-15
+15
-15
+15
-15
+15
+4
+2
0
0
0
0
0
0
0
0
–2
+15
-15
+15
-15
+15
-15
+15
-15
+15
-15
+15
-15
+15
-15
+15
–4
5
5
5
5
5
5
5
–7
–10
–20
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
–30
5
5
5
5
5
5
5
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
C
C
C
C
C
C
C
5
R
L
R
L
R
L
R
L
R
L
R
L
R
L
R
0
10
2
3
4
5/6
7/8
9/10
11/12
L
Mixer
ELECTRONICS FOR SPECIALISTS
ELECTRONICS
If the switch "ATT." (5) is at the left stop at "0 dB",
the level of the input signal is not attenuated. If
distortions occur on the following mixer, set the
switch to position "20 dB" or, in case of very high
signals, to position "40 dB".
4.2 Connecting the balanced output
The balanced output signal is available at the XLR
output (1). Connect the output via a balanced
cable to a highly sensitive input of a mixer (e. g.
microphone input).
4.3 Using the feedthrough output
For feeding the instrument signal simultaneously
to an amplifier, connect the amplifier input to the
jack "PAR. OUT" (4) [see fig. below]. This is where
the signal coming from the instrument is directly
applied.
Attention! The feedthrough output is not suit-
able for connecting speakers. Risk of overload!
4.4 Groundlift switch
If the groundlift switch (2) is in "OFF" position, the
ground of the unbalanced input (3) is connected
to the ground of the balanced output (1). This
switch position should be chosen first. However,
in case of hum loops, set the switch to "ON" posi-
tion. Then the ground between input and output
is separated (galvanic separation).
5 Specifications
Frequency range: . . . . . 15 to 30 000 Hz, ±0 dB
Attenuation of
the input signal: . . . . . . 0 dB, 20 dB, 40 dB
Input
1 × 6.3 mm jack: . . . . 50 kΩ, unbalanced
Outputs
1 × 6.3 mm jack: . . . . feedthrough output,
1 × XLR: . . . . . . . . . . . 600 Ω, balanced
Transmission ratio: . . . . 10 : 1
Ambient temperature: . 0 – 40 °C
Dimensions: . . . . . . . . . 74 × 45 × 130 mm
Weight: . . . . . . . . . . . . 650 g
Subject to technical modification.
INPUT
OVERDRIVE CHANNEL
1
2
0
10
0
10
0
10
0
GAIN
GAIN 1
GAIN 2
CONTOUR
SELECT
BASS
5
0
10
5
0
10
R
Instrument amplifier
A-0539.99.04.08.2016
unbalanced
NORMAL CHANNEL
MASTER
PHONES
PROFESSIONAL GUITAR AMPLIFIER
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
CHANNEL
MIDDLE
TREBLE
LEVEL
SELECT
LEVEL
BASS
MIDDLE
TREBLE
REVERB
VOLUME
MIN. 8 Ω
POWER
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