EasyManua.ls Logo

Bosch LBB 1925 - Connect a microphone

Bosch LBB 1925
30 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
Bosch Security Systems | 2003-09 | 3922 988 99483en
Plena System Pre-amplifier | Installation and Operating Manual | en | 14
4.2 Connect a microphone
Figure 4.2
The input channel has 2 possible balanced inputs, use one of these inputs to connect a microphone or a line-level
source. If you use an input make sure that the 'mic/line' switch is in the correct position.
Note
If you want to use the priority feature, you must use a microphone or line-level source with a priority contact
on pin 4 and 5 of the 5-pole DIN plug.
External settings and connections
11
5
V
-
2
3
0V
-
I
n
+
2
4V
-
+
2
4V
-
R
a
t
e
d
i
n
p
u
t
P
o
w
e
r
:
5
0
VA
T
1
.
0
A
L
2
5
0
V
A
p
pa
rat
us
de
l
i
v
i
r
e
d
c
o
n
n
ect
ed f
o
r
2
30V
-
T
h
i
s
a
p
p
a
r
a
t
u
s
m
u
s
t
b
e
e
a
r
th
e
d
W
ar
n
i
n
g
M
a
s
t
e
r
O
u
t
1
-
4
3
5
T
r
i
g
g
e
r
1
T
e
l
/
E
M
G
0
O
u
t
Ca
l
l
I
n
C
al
l
A
c
t
i
v
e
Z
o
n
e
6
Z
o
ne
5
Zo
n
e
1
C
D
L
R
T
r
i
g
g
e
r
2
PCA
u
d
i
oIn
1
.
A
u
d
i
o
+
2
.
0
V
3
.
A
u
d
i
o
-
4
.
2
4
Vd.
c
.
5
.
A
l
l
c
a
l
l
6.
D
a
t
a
-
7
.
D
a
t
a
+
8
.
C
h
s
.
G
N
D
L
B
B
1
9
2
5
/
0
0
8
9
0
0
1
9
2
5
0
005
1
1
5
/2
30
V
~
,
5
0
/60
H
z
N
o
.
R
S
2
3
2
/
L
in
e
/
L
in
e
Au
x
3
5
4
1
2
3
7
6
8
5
4
1
2
2
1
+
-
G
N
D
3
1
2
+
-
G
N
D
3
Z
o
ne
2
Z
o
ne
1
Zo
ne
2
D
C
O
u
t
D
C
I
n
1
0
0V
1
0
0V 0
0
1
00V
0
1
00V
0
1
0
0V
1
00V 0
0
1
00V
10
0V
0
0
Mast
erO
ut
1-
4
3
5
Tr
ig
ger
1
Te l/ EM
G
0
Out
C
D
L
R
Tr ig
g
er
2
P
CAu
d
ioIn
1
.Aud
io
+
2
.0V
3
.A
u
d
io
-
4
.24
Vd.c
.
5
.A
l
lc
a
ll
6
.
D
a
ta
-
7
.D
a
t
a
+
8
.
Ch
s.GN
D
L
B
B1
9
2
5
/
0
0
8
9
0
01
9
2
5
0
005
11
5/230V
~
,50/60
H
z
N
o
.
RS23
2
/
L
i
n
e
/
Line
3
5
4
1
2
3
7
6
8
5
4
1
2
1
-
G
N
D
3
180 5-pole DIN 180 3-pole XLR
GND
GND
2
1
+
-
G
N
D
3

Related product manuals