Bosch Security Systems | 2011-02
Praesideo 3.5
| Installation and User Instructions | 4 | Amplifiers
en
| 166
10
Basic Amplifiers
10.1 Introduction
The basic amplifier is available in these versions:
•
PRS-1B500: 1 channel, 500 W.
•
PRS-2B250: 2 channels, 2 x 250 W.
•
PRS-4B125: 4 channels, 4 x 125 W.
•
PRS-8B060: 8 channels, 8 x 60 W.
The basic amplifier is a high efficiency class-D power
amplifier for public address and emergency sound
systems and is designed as an extension to the Praesideo
system but can also work as a stand alone amplifier. If
not used as a stand alone amplifier, the basic amplifier is
used in conjunction with the multi channel interface
which provides the audio signals and control.
The basic amplifier is completely supervised and fault
events are reported via the multi channel interface to
the Praesideo network controller.
Loudspeaker lines and loudspeakers connected to a
basic amplifier channel can be supervised by using the
LBB4441 and LBB4443 supervision boards. The multi
channel interface acts as a supervision controller, so no
LBB4440 is required.
In contrast to the power amplifiers, the basic amplifiers
do no offer built-in audio processing functions as
equalization, delay and automatic volume control.
figure 10.1: Block diagram of a basic power amplifier
LED Indicators
Loudspeaker Out A
Audio input
Power Supply
Multi Channel
Interface
Audio input
Multi Channel
Interface
Priority Switching
+ Supervision (2)
Priority Switching
+ Supervision (1)
Loudspeaker Out B
Spare In
Loudspeaker Out A
Loudspeaker Out B
Spare In
Mains
48 V Back-up
Class D
(2)
Class D
(1)
Содержание Praesideo 3.5
Страница 1: ...Praesideo 3 5 Installation and User Instructions Digital Public Address and Emergency Sound System en ...
Страница 131: ...Bosch Security Systems 2011 02 Praesideo 3 5 Installation and User Instructions 4 Amplifiers en 131 Part 4 Amplifiers ...
Страница 201: ...Bosch Security Systems 2011 02 2011 02 Installation and User Instructions 5 Call Stations en 201 Part 5 Call Stations ...
Страница 309: ...Bosch Security Systems 2011 02 Praesideo 3 5 Installation and User Instructions 8 Software en 309 Part 8 Software ...
Страница 411: ...Bosch Security Systems 2011 02 Praesideo 3 5 Installation and User Instructions 10 Events en 411 Part 10 Events ...
Страница 487: ...Bosch Security Systems 2011 02 Praesideo 3 5 Installation and User Instructions 12 Appendices en 487 Part 12 Appendices ...
Страница 497: ......
Страница 498: ... Bosch Security Systems B V Data subject to change without notice 2011 02 ...