Document: LT0554
Vigilant BOWS Installation & Operation Manual
Issue 1.20
6 September 2012
Page 4-5
EOLR
56k
DUAL LINE
BOWS
+
Line
-
BOWS
+
Line
-
SINGLE LINE
(See Note 1)
EOLR
100k
EOLR
100k
(See Note 1)
(See Note 1)
Note 1: Capacitor 10V bipolar. Value 1-5uF per watt of speaker load.
The standard BOWS provides a single 100V line output for connecting to
100V speakers. The speakers can be connected to the BOWS as a
single line terminated with a 56k EOLR at the far end, or using two 100V
lines with each line terminated with a 100k EOLR. Each speaker must be
fitted with a 10V (or higher) bipolar capacitor with a capacitance value of
1uF to 5uF per watt of speaker load. For example a 5W 100V speaker
would typically be fitted with a 10uF 10V Bipolar capacitor.
Figure 15. Speaker Wiring (100V Line Output)
100V a.c. audio line wiring is defined as LV Telecommunications circuits
and is subject to the Australian Standard AS/ACIF S009:2006.
Ensure that this wiring is appropriately separated and insulated from LV
power wiring, ELV and other customer cabling such as detection and
control circuits. 100V wiring is required to be double insulated.
If the FP1021 50W BOWS has been fitted with a 2
nd
T-GEN 50 the
BOWS will have two 100V 50W line outputs. Each line output must be
terminated with one or two EOL resistors as per Figure 15.
If the BOWS is fitted with an SDM-4 speaker distribution module (to
support one of the paging options) each of the four 100V line outputs on
the SDM-4 must be terminated with one or two EOL resistors as per
Figure 16. Note that the SDM-4 uses 47k EOL resistors, which are
supplied with the SDM-4. Unused lines must still be terminated with a
47k resistor.
Speaker
Wiring