Bosch LB20-PC15-4D, Руководство по установке

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8. Install the locking bolt cap .
Redundant safety point
As an added safety measure, it is suggested the user install an extra suspension point back to
the building structural supports. This redundant safety point should have as little slack as
possible (less than 1-inch is preferable).
Figure 4.1: Redundant safety point - 4" (left), 5" (center), 8" (right)
Wiring
Wall bracket wiring
The wall bracket and speaker can be wired using either 2-wires, for input only, or 4-wires, for
input and parallel output.
Figure 4.2: Wall bracket wiring – 2-wires, for input only
4.2
4.2.1
Premium Cabinet Loudspeakers Installation and wiring | en 13
Bosch Security Systems B.V. Installation manual 2017.08 | 01 | F.01U.345.357