Bosch Security Systems | 2006-11 | 9922 141 50751en
Plena Power Amplifier
| Installation and User Instructions | Amplifiers
en
| 16
3.5.5
Constant voltage loudspeakers
The power amplifier can drive 100 V constant voltage
loudspeakers at full power (100 V) or half power (70 V).
Connect the loudspeakers in parallel and check the
loudspeaker polarity for in-phase connection. The
summed loudspeaker power should not exceed the
rated amplifier power.
3.5.6
Low impedance loudspeakers
Connect low impedance loudspeakers to the 8 Ohm/0
terminals. This output can deliver the rated output
power into an 8 Ohm load. Connect multiple
loudspeakers in a series/parallel-arrangement to make
the combined impedance 8 Ohm or higher. Check the
loudspeaker polarity for in-phase connection.
3.5.7
Power
Use the mains lead to connect the amplifier to the
power supply.
figure 3.10: Priority input and control terminals
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 Re
lays' Outp
ut
NO COM
NC
Off On
NO COM
NC NO
COM NC
Input1Prio
rity
Loopthrou
gh 1
Input2Pro
gram
Loopthrou
gh 2
Input1Prio
rity
2...24V- Inp
ut 1
0V- Input2
Input2En
able
2..24V- En
able
0V- Mute
100V
0
Slave Inp
ut 100V
+
+
-
-
100V
0
70V
0
8ohm
100V/70V
Selection(1
2A)
PriorityOnly
0
0
No Priority
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 ou
tput pow
er 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 nable
100V
0
100V
70V
0
0
8
Direct O ut
put
Input
Input
Input 2-Pro
gram
Input 1-Pr
iority
2..24V
Default O
ff
GND 2..24
V
Default O
n
GND
Priority Only
No Priority
100V
0
100V
0
Priority Controlled Output 24V DCIn
100V
70V
0
0
8
Direct O utput
Priority Only
No Priority
70 V
100 V
8 Ohm
8 Ohm
8 Ohm
8 Ohm
8 Ohm
8 Ohm
4 Ohm
4 Ohm
LBB1938
figure 3.11: Mains lead
100V
0
100V
0
Priority C
ontrolled
Output
24V DC
In
Appara
tus deliv
ered
connect
ored for 2
30V~
Main Pow
er
Battery
t
elays' Outp
ut
NC
Off On
NO COM
NC NO
COM NC
100V
0
70V
0
8ohm
100V/70V
Selection(1
2A)
PriorityOn
ly
0
0
No Priority
Priority
F
7
0
1
F
7
0
2
Batter
y
Power
Detecti
on
230V~
240V~
Rated
input
Power :
1600VA
100V
70V
0
0
8
Direct O ut
put
100V
0
1 00V
0
Priority C
ontrolled
Output
Off On
24V DC
In
Apparatus
delivered
connecto
red for 23
0V~
Main Powe
r
Battery
Input
Fault Relays'
Output
NO COM
NC
Off On
NO COM
NC NO
COM NC
Input1Prio
rity
Loopthrou
gh 1
Input2Pro
gram
Loopthrou
gh 2
Input1Prio
rity
2...24V- In
put 1
0V- Input2
Input 2En
able
2..24V- En
able
0V- Mute
100V
0
Slave Inpu
t 100V
+
+
-
-
100V
0
70V
0
8ohm
100V/70V
Selection(1
2A)
PriorityOnly
0
0
No Priority
Priority
F
7
0
1
F
7
0
2
Battery
Power
Detection
Pilot-tone
Detector
230V~
240V~
Design &
Quality
The Nether
lands
LBB 1938
/10
NL-4827H
G-10
Plena 480W
Power Am
plifier
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 inpu
t
Power :
1600VA
Input 1
P riority
S lave Inp
ut
100V
Input 2
E nable
100V
0
100V
70V
0
0
8
Direct O utp
ut
Input
Input
Input 2-Pro
gram
Input 1-Pr
iority
2..24V
Default O
ff
GND 2..24
V
Default O
n
GND
Line fus
e
T10L25
0V
