Bosch PRAESENSA - Technical Data

44 en | Installation wiring PRAESENSA
2021.12.21 | V0.15b | F.01U.402.882
Underwriters Laboratories Listing Document (ULLD)
Bosch Security Systems B.V.
3.4.9 Technical data
Electrical
Amplifier outputs
Rated output voltage
100V mode, 1kHz, THD <1%, no load
70V mode, 1kHz, THD <1%, no load
100VRMS
70VRMS
Maximum continuous audio power during Alarm and
normal standby condition:
All channels combined
100V mode, load 66.7ohm
70V mode, load 33.3ohm
Channel1
100V mode, load 66.7ohm
70V mode, load 46.7ohm
Other channels
100V mode, load 133.3ohm
70V mode, load 66.7ohm
150W
150W
150W
105W
75W
75W
Power transfer
Power supply input A/B
Input voltage 48VDC
Maximum current consumption 7A
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 short circuit ≤ 500mohm
Loudspeaker field wire class ClassA, ClassB, Dual ClassB.
Network interface
Ethernet
Protocol
Redundancy
100BASE‑TX,
1000BASE‑T
TCP/IP
RSTP ClassN
Ports 2
This product is intended for dry indoor use only.