Page 17 - Bosch & EV 2013 b
Basic HTML Version
August 2013
BOSCH-17
Prices Ex. GST
LBB1941-00 / LBB1946-00
Microphone Not Included
Bosch Plena PA
PLENA MIXER AMPS
The Plena mixer amplifier is a versatile, high-performance unit with four mono microphone inputs and a music input.
It fulfills a wide variety of public address requirements at a surprisingly low cost.
• Range of single zone mixer amplifiers from 30W to 120W
• 70V / 100V and 8 ohm outputs
• Four low-noise balanced inputs for microphone or line
• Selectable priority & VOX switching on microphone input 1
• Optional 2-tone chime to precede announcements
• VOX activated emergency override
• Outputs for normal, call-only and mix-only zones
• Select switch for CD, tuner or auxiliary music inputs
MIC. Inputs Zone Insert Output Code
4 3xRCA 1 Yes 30Wrms LBB1903/10
4 3xRCA 1 Yes 60Wrms LBB1906/10
4 3xRCA 1 Yes 120Wrms LBB1912/10
3
0dB
-6dB
-20dB
Power
1
4
2
Line
CD
AUX
Master
Select
PlenaMixerAmplifier
3 1
1
4 5
L
R
CD
Aux
LineOut1V
Mic/Line
Mic/Line
Inc
Out
In
0
0
Chime
Tel/Emer.
2
2
3
4
Call/Mix
24VDCIn
CalOnly MixOnly
100V 0 70V 0
100/70V0 100/70V0
8 0
PLENA POWER AMPS
A powerful range of power amplifiers in a 2U high 19” case for rack
mounting or tabletop use. LEDs on the front panel show the status
of the amplifier: power, audio output level, and supervised functions.
This high-performance unit fulfills a wide range of public address
requirements at a surprisingly low cost.
Input Output
Code
1 120Wrms LBB1930/20
1 240Wrms LBB1935/20
1 480Wrms LBB1938/20
1 1000Wrms PLN-1P1000
• High power amplifier in a compact housing
• 70V / 100V and 8 ohm outputs
• Dual inputs with priority switching
• 100 V input for slave operation on 100 V speaker line
• Temperature controlled forced front to back ventilation,
directly stackable.
PLENA MIXER 6 ZONE PRE-AMP
The Plena system pre-amplifier is a versatile, high performance unit with call and mono BGM (background music).
It fulfills a wide variety of public address requirements at a surprisingly low cost. It can provide dual channel
operation for simultaneous calls and BGM for up to six different zones, using two Plena amplifiers.
MIC. Input Zone Insert Output Code
2 3xRCA 6 No Line LBB1925/10
0dB
-6dB
-20dB
Power
/Line
Select
CD
AUX
0
0
Z1
Z2
Z3
Z4
Z5
Z6
PlenaSystemPre-amplifier
3
Tel/EMG
0
L
R
1-
4 5
/Line
/Line
Trigger1 Trigger2
PCAudoln
1.Audio+
2.0V
3.Audio-
4.24Vd.c.
5.Allcall
6.Data-
7.Data+
8.Chs.GND
RS232
xuA
DC
MasterOut
Out
100V 0
100V 0
100V 0
100V 0
115V 230V
100V 0 100V 0
+24V-
+24V-
3
7
8
6
1
5
2
4
3
1
5
2
4
3
1
+
-
2
GND
3
2
+
-
1
GND
100V 0
100V 0
OOn
MainPower
Battery
Input
FaultRelays'Output
NOCOMNC
OOn
NOCOMNCNOCOMNC
Battery
Detection
Pilot-tone
Detector
Input
Input
Input
Output
Input2-Progr
Power
am
Input1-Priority
Input1
Priority
SlaveInput
100V
Input2
Enable
100V 0
2..24V
DefaultO
GND2..24V
DefaultOn
GND
24V DCIn
PriorityOnly
NoPriority
100V
100V 0V
0V
PriorityControlledOutput
100V
70V 0
0 8
DirectOutput
100V LINE + 8Ω OUTPUT
POWER AMPLIFIER ONLY WITH 100V LINE + 8Ω OUTPUT
PRE-AMPLIFIER ONLY - REQUIRES AMP
• Six-zone system pre-amplifier, with single
or dual channel operation
• Two input channels for call stations
• Universal input for microphone/line, with
speech optimized tone control
• Three inputs for BGM selection and music
optimized tone control
• Front panel zone selection for BGM and
call station zone selection for calls
• PC and trigger inputs for automated calls,
alarm tones and chimes to selected zones
