Bosch Security Systems | 2006-11 | 9922 141 50751en
Plena Power Amplifier
| Installation and User Instructions | Amplifiers
en
| 13
3.5.2
Connecting line input and
loopthrough
The power amplifier has a balanced line input for
connection to a pre-amplifier or a mixer. Use the
loopthrough connection to connect the power amplifier
to another power amplifier if more power is needed.
Each power amplifier must be connected to its own set
of loudspeakers. Do not connect power outputs to each
other.
Use program line - input 2 (4) and line loopthrough 2 (6)
for normal operation without priority.
figure 3.7: Line input and loopthrough
100V
0
1 00V
0
Priority C
ontrolled
Output
Off On
24V DC
In
Apparatus
delivered
connecto
red for 23
0V~
Main Pow
er
Battery
Input
Fault Relay
s' Output
NO COM
NC
Off On
NO COM
NC NO
COM NC
Input 1
Priority
Loopth
rough 1
Input 2
Program
Loopth
rough 2
Input 1
Priority
2...24V-
Input 1
0V- Inpu
t 2
Input 2
Enable
2..24V- E
nable
0V- Mute
100V
0
S lave In
put 100V
+
+
-
-
100V
0
70V
0
8ohm
100V/70V
Selectio
n (12A)
Priority O
nly
0
0
No Priorit
y
Priority
F
7
0
1
F
7
0
2
Battery
Power
Detection
Pilot-tone
Detector
230V~
240V~
Design &
Quality
The Nethe
rlands
LBB 1938
/10
NL-4827H
G-10
Plena 480
W Powe
r Amplifie
r
Max. outp
ut power
720W
Rated out
put powe
r 180W
230V~,50
/60Hz
S/N.
8900 193
81001
A035413
M
a
d
e
in
C
h
in
a
N663
Rated inp
ut
Power :
1600V
A
Input 1
P riority
S lave In
put
100V
Input 2
E na ble
100V
0
100V
70V
0
0
8
D irect O
utput
Input
Input
Input 2-P
rogram
Input 1-P
riority
2. .24V
D efault
O ff
G ND 2..
24V
D efault
O n
G ND
100V
0
1 00V
0
Priority C
ontrolled
Output
Off On
24V DC
In
Apparatus
delivered
connecto
red for 23
0V~
Main Pow
er
Battery
Input
Fault Rela
ys' Output
NO COM
NC
Off On
NO COM
NC NO
COM NC
Input 1
Priority
Loopthro
ugh 1
Input 2
Program
Loopthro
ugh 2
Input 1
Priority
2...24V-
Input 1
0V- Inpu
t 2
Input 2
Enable
2..24V- E
nable
0V- Mute
100V
0
S lave In
put 100V
+
+
-
-
100V
0
70V
0
8ohm
100V/70V
Selectio
n (12A)
Priority On
ly
0
0
No Priorit
y
Priority
F
7
0
1
F
7
0
2
Battery
Power
Detection
Pilot-tone
Detector
230V~
240V~
Design &
Quality
The Nethe
rlands
LBB 1938
/10
NL-4827H
G-10
Plena 480
W Power
Amplifier
Max. outp
ut power
720W
Rated out
put powe
r 180W
230V~,50/
60Hz
S/N.
8900 193
81001
A035413
M
a
d
e
in
C
h
in
a
N663
Rated inp
ut
Power :
1600V
A
Input 1
P riority
S lave Inp
ut
100V
Input 2
E na ble
100V
0
100V
70V
0
0
8
D irect O
utput
Input
Input
Input 2-P
rogram
Input
1-P riorit
y
2. .24V
D efault
O ff
G ND 2..
24V
D efault
O n
G ND
LBB1925/10
115V-
230V
-
In
+24V
-
+24V
-
R ated
input
P ower
: 50VA
T 1.0AL
250V
Appa
ratus d
elivere
d
conne
cted
for 230V
-
T his ap
paratus
must b
e earth
ed
W arnin
g
MasterO
ut
1-
4
3
5
T rigge
r 1
T el/E M
G
0
Out
C all In
C all Ac
tive
Zone 6
Zone 5
Zone 1
C D
L
R
T rigger
2
P C Aud
ioIn
1.Aud
io+
2.0V
3.Aud
io-
4.24Vd.
c.
5.Allca
ll
6.Data
-
7.Data
+
8.C hs.G
ND
L B B 19
25/00
8 9001
9 2500
0 5
115/23
0V ~,50
/60Hz
No.
R S 232
/Line
/Line
Aux
3
5
4
1
2
3
7
6
8
5
4
1
2
2
1
+
-
G ND
3
1
2
+
-
G ND
3
Zone 2
Zone 3
Zone 4
DC Ou
t
DC In
100V
100V
0
0
100V
0
100V
0
100V
100V
0
0
100V
100V
0
0
4 6
4 6
