Bosch PRAESENSA 600W 8 Channel Amplifier for 100V/70V Loudspeakers in Public Access and Voice Alarm Applications

ITEM #: BSH-PRA-AD608 MFG #: PRA-AD608

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$6,626.00

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PRA-AD608 - Overview

The Bosch PRA-AD608 is a flexible and compact multi-channel power amplifier for 100 V or 70 V loudspeaker systems in Public Address and Voice Alarm applications. It fits in centralized system topologies, but also supports decentralized system topologies because of its OMNEO IP network connection, combined with DC power from a multifunction power supply. The output power of each amplifier channel adapts to the connected loudspeaker load, only limited by the total power budget of the whole amplifier. This flexibility, and the integration of a spare amplifier channel, makes it possible to utilize the available power effectively and use less amplifiers for the same loudspeaker load, compared to using traditional amplifiers. Digital sound processing and control, adjusted to the acoustics and requirements of each zone, allow for better sound quality and speech intelligibility.

  • Features:

    • Flexible power partitioning across all channels
    • Low power consumption and heat loss
    • Full supervision with integrated fail-safe redundancy
    • Digital signal processing per channel
    • IP-networked on OMNEO for audio and control
    • Transformerless, galvanically isolated, 70/100 V outputs, with a total loudspeaker output power of 600 W
    • Flexible partitioning of the available output power across all amplifier channels to use it effectively, significantly reducing the amount of required amplifier power in a system
    • Audio-over-IP, using OMNEO, the Bosch high-quality digital audio interface, compatible with Dante and AES67; audio sample rate is 48 kHz with 24-bit sample size.
    • Load independent frequency response; the amplifier channels can be used with any loudspeaker load up to the maximum, without any change in audio quality.
     
  • Specifications:

    • Operating Voltage (VDC): 44-60 VDC
    • Power Consumption (W): 250 W Max
    • Outputs: 8
    • Max Output Power (W): 600 W burst
    • Analog Inputs: 1
    • Ethernet Ports: 2
    • Protocols and Interfaces: OMNEO;AES 70
    • Sample Rate: kHz: 48 kHz
    • Rated Output Voltage (V): 70;100 V
    • Frequency Response (Hz): 20 - 20000 Hz
    • Min Signal-to-Noise Ratio (dBA): 107 dBA
    • Operating Temperature: 23 to 122°F
    • Weight: 19.4 lbs

      Electrical
    • Max Loudspeaker Load:
      - 100V Mode, All Channels: 600W
      - 70V Mode, All Channels: 600W
    • Min Loudspeaker Load Impedence:
      - 100V Mode, All Channels: 16.7 Ohm
      - 70V Mode, All Channels: 8.3 Ohm
    • Max Cable Capacitance:
      - 100V Mode, All Channels: 2 uF
      - 70V Mode, All Channels: 2 uF
    • Rated Output Voltage:
      - 100 V mode, 1 kHz, THD <1 %, no load: 100VRMS
      - 70 V mode, 1 kHz, THD <1 %, no load: 70VRMS
    • Full to no Load Regulation:
      - 20 Hz to 20 kHz: <.2 dB
    • DC Offset Voltage: <50 mV

      Supervision
    • End-of-Line detection mode: Pilot tone, 25.5 kHz, 3 VRMS
    • Power supply input A/B: Undervoltage
    • Ground short detection (loudspeaker lines): < 50 kohm
    • Amplifier channel redundancy switching: Internal spare channel
    • Amplifier channel load: Short circuit
    • Loudspeaker line redundancy switching: A/B group, Class-A loop
    • Controller continuity: Watchdog
    • Temperature: Overheat
    • Fan: Rotation speed
    • Network interface: Link presence

      Network Interface
    • Ethernet: 100BASE-TX, 1000BASE-T
    • Protocol: TCP/IP
    • Redundancy: RSTP
    • Audio/control protocol: OMNEO
    • Network audio latency: 10 ms
    • Audio data encryption: AES128
    • Control data security: TLS
    • Ports: 2

    • Mechanical
    • Enclosure:
      - Dimensions: Dimensions: 1.7 x 19 x 15.7 In (WxHxD)
      - Case Material: Steel
      - Case Color: RAL9017
      - Frame Material: Zamak
      - Frame Color: RAL9022HR
     
  • Item Includes:

    • 1x Amplifier, 600W 8-channel
    • 1x Set of 19"-rack mounting brackets (pre-mounted)
    • 1x Set of screw connectors and cables
    • 1x Quick Installation Guide
    • 1x Safety information
     
  • GTIN:

    0800549825924
     

PRA-AD608 - Required Accessories

    California Residents:
    WARNING:
    Cancer and Reproductive Harm - www.P65Warnings.ca.gov