Bosch PRAESENSA, Installation Manual

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72 en | *Amplifier, 600W 4-channel | PRA-AD604 PRAESENSA
2019.11 | V1.00 | Installation manual Bosch Security Systems B.V.
G
E
E
PRA-MPSx
C
123456
To create a lifeline connection, follow the procedure below.
1.
Crimp ferrules E onto the ends of the electrical wires of cable G to provide a solid and
reliable electrical connection.
–
Use a dedicated crimping tool.
2. Insert each wire into the appropriate slot of the connector C. The wiring order is not
critical, but use the same order for all lifeline cables in the system to minimize the risk of
errors.
–
Use a flat blade screwdriver to tighten each connection.
3. Insert the cable connector into the amplifier's lifeline socket, cut the cable to length and
mount a connector of the same type, delivered with the multifunction power supply to
the other end of the cable, observing wiring order. Insert this connector into the lifeline
socket of the multifunction power supply.
Notice!
The lifeline connection may not be longer than 3 m.
8.5.5 Amplifier outputs
The amplifier provides four output channels and a spare channel that substitutes a failing
channel.
The channels have direct drive 70/100
V outputs for low distortion, low crosstalk and a wide
audio bandwidth. There are no output transformers that would be a limiting factor for the
output power of each channel. Every channel also has a load independent flat frequency
response. This combination of features makes it possible to partition the available amplifier
power across all channels and utilize that power effectively.
Every channel has a 6‑pole connector socket, providing independently switched loudspeaker
group A and group B outputs and a separate connection facility for an End‑of‑Line device for
loudspeaker cable supervision (only for Class‑A loop, A to B).