Bosch PRAESENSA - Wiring

62 en | Installation wiring PRAESENSA
2021.12.21 | V0.15b | F.01U.402.882
Underwriters Laboratories Listing Document (ULLD)
Bosch Security Systems B.V.
– Secure conduit, wiring cable, etc., to the Lowell shelf per NFPA 70 codes.
6. Mount the shelf to the desired position in the Lowell 19"‑rack:
– IMPORTANT: when connected for ClassA wiring, close to the PRA-AD60x amplifier.
3.6.5 Wiring
The end‑of‑line device must be connected to the end of a loudspeaker line, to monitor the full
length of the line. All loudspeakers connected to that line must be wired in a loop‑through
arrangement, without branches. The end‑of‑line device is then connected to the last
loudspeaker using the supplied connection wire.
To do so:
1. Cut the wires (1) to the required length for connection to the end‑of‑line device, feeding
the wires through the strain relief slot (2) in the housing:
– The end‑of‑line device uses a 2‑pole push wire connector.
– The stripped wire ends must be inserted into the connector completely, up to the
insulation, to prevent that the wires can be touched.
– The polarity is not important for the end‑of‑-line device.
2. Connect the other side of the two wires to the 100V or 70V loop‑through connection of
the loudspeaker:
– This is the primary side of the loudspeaker transformer.
See also the sections: Mounting, page 58 , Amplifier outputs, page 39 and Amplifier outputs,
page 51 .