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Installing the EVS-50W
Class B Speaker Configuration
Figure 4.13 illustrates how to wire speakers to the control panel using Class B supervision.
Class A Speaker Configuration
Figure 4.14 illustrates how to wire speakers to the control panel using Class A wiring.
4.3.6 VBUS Wiring
The VBUS is an analog voice bus that carries the recorded voice messages from the EVS-VCM to the EVS-50W, or the voice messages gen-
erated from a system microphone to the EVS-50W. The maximum resistance on the VBUS is 20Ω.
EVS Series Manual — P/N LS10062-001SK-E:D 3/15/2022
C IR C U IT 4
C IR C U IT 3
C IR C U IT 2
+
IN
–
+
O U T
–
+
IN
–
+
O U T
–
+
IN
–
supervised,
power-limited
Figure 4.13 Class B Speaker Configuration
C IR C U IT 4
C IR C U IT 3
+
IN
–
+
O U T
–
+
IN
–
+
O U T
–
supervised,
power-limited
Figure 4.14 Class A Speaker Configuration
C IR C U IT 1
+
O U T
–
+
IN
–
+
O U T
–
C IR C U IT 2
C IR C U IT 1
+
IN
–
+
O U T
–
+
IN
–
+
O U T
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EVS Device Installation
UL-listed
15kΩ EOL
21
- Quick Links:
- Addressing Sbus Devices
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