Technical data
  Chapter 3: Overview 
Series SPB Audio Boosters Manual, Revision A 
3-3
120 VAC
     Audio In 
25V or 70.7V
 Auxiliary In. For Alarm 
 Operation of Amplifier 
    when operating on 
Battery Only. 8-33VDC 
    or Contact closure, 
                  Strobe In
     8-33VDC or Contact 
                   Closure
Audio Out 25V 
or 70V at 80 Watts, 
Supervised
Expansion Out
24VDC at 0.5A 
in Alarm Condition
Supervised
DC OUT Constant
24VDC at 0.5A
Unsupervised for
Splitter Power
SPB-80/4
Strobe 1 Out 
24VDC at 2A,
Supervised
Strobe 2 Out 
24VDC at 2A,
Supervised
Trouble Form C Relay 
Rated at 24VDC at 2A
Figure 3-1 SPB-80/4Audio Booster Panel, Basic Capabilities 
120 VAC
     Audio In 
25V or 70.7V
 Auxiliary In. For Alarm 
 Operation of Amplifier 
    when operating on 
Battery Only. 8-33VDC 
    or Contact closure, 
Audio 1 Out 25V 
or 70V at 80 Watts, 
Supervised
Expansion Out
24VDC at 0.5A 
in Alarm Condition
Supervised
DC OUT Constant
24VDC at 0.5A
Unsupervised For
Splitter Power
SPB-160
Audio 2 Out 25V 
or 70V at 80 Watts, 
Supervised
Trouble Form C Relay 
Rated at 24VDC at 2A
Figure 3-2 SPB-160 Audio Booster Panel, Basic Capabilities 










