Max. number of cabinets operated in parallel – d&b D80 User Manual
Page 78
15.2. Max. number of cabinets operated in parallel
The following table indicates the maximum number of cabinets
which can be operated in parallel by one amplifier channel in
order to be able to detect a failure of a loudspeaker component.
Note: The thresholds of the System check function defined by
the light blue area (–20 % ... +30 %) are also used by Load
monitoring to evaluate the system status. Therefore the values
in the table also apply to Load monitoring. If more cabinets
are operated in parallel, a correct supervision for single
component faults is not possible. This is of particular
importance for voice alarm and evacuation systems.
System
Failure mode
Single cabinet
disconnected
HF section of
single cabinet
Single HF/MF
driver
LF section of
single cabinet
Single LF driver
16C
3
3
-
1
-
24C
2
2
-
1
-
24C-CE
1
1
-
1
-
10AL/10AL-D
3
3
-
3
-
10S/S-D/A/A-D
3
3
-
3
-
12S/S-D
2
2
-
2
-
12S-SUB
3
-
-
3
-
18S/A-SUB
3
-
-
3
-
27S/A-SUB
1
-
-
-
1
4S
3
2
-
3
-
5S
3
2
-
3
-
8S
3
2
-
3
-
B1-SUB
1
-
-
-
1
B2-SUB
1
-
-
-
1
B4-SUB
2
-
-
2
1
B6-SUB
2
-
-
2
-
C3
2
2
1
2
1
C4-TOP
3
2
-
3
-
C4-SUB
3
-
-
3
-
C6/690
3
2
-
2
-
C7-TOP
3
2
-
3
-
C7-SUB
3
-
-
3
-
Ci-SUB
3
-
-
3
-
Ci45/60/90
3
2
-
3
-
Ci80
3
1
-
3
-
E0
3
2
-
3
-
E12/12-D
3
2
-
3
-
E12-SUB
3
-
-
3
-
E12X-SUB
3
-
-
3
-
d&b D80 Manual 1.9 en
78