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DI Box
Please read these operating instructions care-
fully prior to operating the unit and keep them for
later use.
1 Operating Elements and Connections
1 Unbalanced input (6.3 mm jack)
2 Unbalanced feedthrough output (6.3 mm
jack); at this jack, the fed-through input sig-
nal of jack (1) can be picked up
3 Switch for attenuating the input signal
4 Balanced output (XLR)
5 Groundlift switch for separating the ground
connection between the input (1) and the
output (4)
2 Safety Notes
The unit corresponds to all relevant directives of
the EU and is therefore marked with
G
The unit is suitable for indoor use only. Protect
it against dripping water and splash water,
high air humidity, and heat (admissible ambi-
ent temperature range 0 – 40 °C).
G
Only use a dry, soft cloth for cleaning. Do not
use any chemicals or water.
G
No guarantee claims for the unit and no lia bil-
ity for any resulting personal damage or mate-
rial damage will be accepted if the unit is used
for other purposes than originally intend ed, if it
is not correctly connected, operated, or not
repaired 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 harm-
ful to the environment.
IN
PAR.
OUT
DIB-100
PRO
DIRECT BOX
Musical instrument
DI-Box
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 (fig. 2). Due to the balanced connection to
the mixer, interferences can be prevented 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 influ-
ence 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 "UNB. 50 kΩ" (1). Alternatively, the
input jack can also be connected to the speaker
output of an instrument amplifier.
Caution! Never connect speaker outputs of
am plifiers operating in bridge circuit;
the DI Box will short-circuit them.
If the switch "ATT." (3) is at the left stop at "0 dB",
the level of the input signal is not attenuated. If
distor tions 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 (4). Connect the output via a bal-
anced cable to a highly sensitive input of a mixer
(e. g. microphone input).
1
IN
2
PAR.
OUT
DIB-100
3
PRO
DIRECT BOX
CH1
CH2
5
5
0
10
0
10
0
0
-15
+15
-15
+15
0
0
-15
+15
-15
+15
5
5
0
10
0
10
5
5
0
10
0
10
C
C
L
R
L
R
1
2
3
BLOCK DIAGRAM
MATCHING
3
ATT.
OUT
TRANS-
2
1
FORMER
GROUND
LIFT
WWW.IMGSTAGELINE.COM
®
MONACOR INTERNATIONAL GmbH & Co. KG • Zum Falsch 36 • 28307 Bremen • Germany
©
Copyright
by MONACOR INTERNATIONAL. All rights reserved.
BLOCK DIAGRAM
MATCHING
3
OUT
ATT.
TRANS-
2
1
FORMER
GROUND
LIFT
WWW.IMGSTAGELINE.COM
MMX-122
CH3
CH4
CH5/6
CH7/8
CH9/10
CH11/12
12-INPUT MIXING CONSOLE
5
5
5
5
0
10
0
10
0
10
0
10
+22
0
0
0
0
0
0
+10
+7
-15
+15
-15
+15
-15
+15
-15
+15
-15
+15
-15
+15
+4
0
0
0
0
0
0
+2
0
—2
-15
+15
-15
+15
-15
+15
-15
+15
-15
+15
-15
+15
—4
5
5
5
5
5
5
5
—7
—10
—20
0
10
0
10
0
10
0
10
0
10
0
10
0
10
—30
5
5
5
5
5
5
0
10
0
10
0
10
0
10
0
10
0
10
C
C
C
C
C
C
5
5
L
R
L
R
L
R
L
R
L
R
L
R
0
10
0
10
4
5/6
7/8
9/10
11/12
L
R
Mixer
DIB-100
Best.-Nr. 24.1140
4.3 Using the feedthrough output
For feeding the instrument signal simultaneously
to an amplifier, connect the amplifier input to the
jack "PAR. OUT" (2) [see fig. 2]. 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 (5) is in "OFF" position,
the ground of the unbalanced input (1) is con-
nected to the ground of the balanced output (4).
This switch position should be chosen first. How-
ever in case of hum loops, set the switch to "ON"
position. Then the ground between input and
output is d.c. separated.
5 Specifications
Frequency range: . . . . . 15 to 30 000 Hz
Attenuation of
the input signal: . . . . . . 0 dB, 20 dB, 40 dB
Input
1 × 6.3 mm jack: . . . 50 kΩ, unbal.
Outputs
1 × 6.3 mm jack: . . . feedthrough output,
unbal.
1 × XLR: . . . . . . . . . 600 Ω, bal.
Transmission ratio: . . . . 10 : 1
Ambient temperature: . . 0 – 40 °C
Dimensions: . . . . . . . . . 74 × 45 × 130 mm
Weight: . . . . . . . . . . . . . 650 g
Subject to technical change.
4
5
Œ
INPUT
OVERDRIVE CHANNEL
NORMAL CHANNEL
1
2
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
0
10
GAIN
CHANNEL
GAIN 1
GAIN 2
CONTOU
SELECT
BASS
MIDDLE
TREBLE
LEVEL
SELECT
LEVEL
BASS
MIDDLE
TREBLE
Instrument amplifier
A-0539.99.03.07.2011
MASTER
PHONES
PROFESSIONAL GUITAR AMPLIFIER
0
10
0
10
REVERB
VOLUME
MIN. 8 Ω
POWER
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