Technical Data - Bosch PRAESENSA Manual

PRAESENSA
3.5.9

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
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
Power transfer
Power supply input A/B
Input voltage
Maximum current consumption
Supervision
End‑of‑Line detection mode
Power supply input A/B
Ground short detection (loudspeaker lines)
Amplifier channel redundancy switching
Amplifier short circuit
Loudspeaker field wire class
Network interface
Ethernet
Protocol
Redundancy
Ports
Bosch Security Systems B.V.
Underwriters Laboratories Listing Document (ULLD)
Installation wiring | en
100 VRMS
70 VRMS
150 W
150 W
150 W
105 W
75 W
75 W
48 VDC
7A
Pilot tone
25.5 kHz, 3 VRMS
Undervoltage
< 50 kohm
Internal spare channel
≤ 500 mohm
Class A, Class B, Dual Class B.
100BASE‑TX,
1000BASE‑T
TCP/IP
RSTP Class N
2
2021.12.21 | V0.15b | F.01U.402.882
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