Technical data

Chapter 3: Overview
Series SPB Audio Boosters Manual, Revision A
3-4
120 VAC
SPB-320
Trouble Form "C" Relay
Rated at 24VDC at 2A
Audio 1 Out 25V or 70V
at 80 Watts, Supervised,
Power Limited
Audio 2 Out 25V or 70V
at 80 Watts, Supervised,
Power Limited
Expansion Out 24VDC at 0.5A
in Alarm Condition, Supervised,
Power Limited
DC OUT Splitter Power,
24VDC at 0.5A, Unsupervised,
Non-Power Limited
Audio In, 25V or 70.7V
Audio 3 Out 25V or 70V
at 80 Watts, Supervised,
Power Limited
Auxiliary In. For Alarm Operation
of Amplifier when operating on
Battery Only. 8-33VDC or Contact
Closure, Reverse Polarity
1A
1B
2A
2B
X2
X2
X2
Audio 4 Out 25V or 70V
at 80 Watts, Supervised,
Power Limited
Figure 3-3 SPB-320 Audio Booster Panel, Basic Capabilities
GROUNDING
TERMINAL
BLOCK
SPB-80
MOTHERBOARD
POWER SUPPLY
MOTHERBOARD
12DC 12AH
BATTERY
12DC 12AH
BATTERY
Figure 3-4 SPB-80/4 Audio Booster Panel