Praesideo 3.5 Installation and User Instructions 4 Amplifiers

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8Power Amplifiers

8.1Introduction

The PRS-1P500, PRS-2P250 and PRS-4P125 power amplifiers are the successors of the LBB4421/10, LBB4422/10 and LBB4424/10 power amplifiers. The main difference is that the efficiency of the new amplifiers is higher, so their power consumption is less for the same output power. This is especially noticeable in Idle mode and in Stand-by or Power save mode, saving valuable battery power in situations where this is allowed (not for EN54-16 compliant installations).

The main function of the Power Amplifiers is the amplification of audio signals for the loudspeakers. The amplifiers are high-efficiency class D amplifiers with

switched mode power supply. The amplifiers are protected against overload, overheat and short-circuits. See figure 8.1 for a block diagram of the power amplifier.

The power amplifiers have configurable audio processing functions, like parametric equalization, audio delay and the possibility for noise dependent automatic volume control (AVC).

Note

The number of inputs, spare amplifier

connections, loudspeaker lines and control outputs depends on the type of power amplifier.

 

 

Display + Control

 

 

 

 

D/A

Class D

Loudspeaker Out

Audio Inputs

A/D

(1..8)

 

(1..8)

Spare Amplifier

 

 

 

 

 

Network

 

 

 

 

Processor

 

 

 

 

+

 

 

Control Inputs

 

DSP

 

 

I

O

 

Control Outputs (1..8)

POF

 

Network

 

 

 

 

Redundancy

 

 

POF

 

Switching

 

 

 

 

 

 

 

 

 

 

Mains

 

 

Power Supply

 

 

 

 

 

 

48 V Back-up

figure 8.1: Block diagram of a power amplifier

Bosch Security Systems 2011-02

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Bosch Appliances 3.5 manual Power Amplifiers, Number of inputs, spare amplifier, Audio Inputs Spare Amplifier, Back-up
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3.5 specifications

Bosch Appliances has established itself as a leader in home technology, known for its commitment to quality, innovation, and sustainability. The Bosch 3.5 series epitomizes this ethos, offering a range of appliances designed to enhance everyday living while ensuring energy efficiency and ease of use.

At the heart of the Bosch 3.5 line is the integration of advanced technologies optimized for performance. One standout feature is the EcoSilence Drive, a brushless motor used in dishwashers and washing machines. This technology ensures quieter operation while offering reliability and energy savings. Customers can appreciate a peaceful home environment while benefiting from powerful cleaning options.

Another significant characteristic of Bosch appliances is their focus on precision and customization. The Bosch 3.5 series includes models with adjustable shelving and customizable interior layouts, allowing consumers to maximize storage according to their needs. The flexibility in functionality is complemented by features such as the VarioFlex and VarioDrawer systems in dishwashers, which offer additional loading options for better convenience.

Zones such as cooking and refrigeration have also seen remarkable improvements in the 3.5 series. The induction cooktops utilize speed and precision to deliver quick cooking experiences while maintaining safety, thanks to features like automatic shut-off and child lock. Furthermore, Bosch refrigerators included in this line employ innovative cooling technologies, such as the Dual Compressor system, which ensures optimal freshness for longer by preventing odor transfer between compartments.

Sustainability is a key characteristic of Bosch products. The 3.5 series appliances are designed to meet stringent energy efficiency standards, with many models Energy Star certified. This commitment to environmental stewardship resonates with eco-conscious consumers who seek to reduce their carbon footprint without sacrificing performance or style.

Aesthetically, Bosch appliances in the 3.5 line boast sleek designs that harmonize with modern kitchen aesthetics. With stainless steel finishes, multi-functional interfaces, and intuitive controls, these appliances not only perform exceptionally but also contribute to a sophisticated home environment.

In conclusion, Bosch Appliances 3.5 series integrates cutting-edge technology, sustainable practices, and user-centric designs, making them an optimal choice for modern households looking for reliability, efficiency, and style. Whether for cooking, cleaning, or preservation, Bosch continues to set the standard in home appliances.
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