Bosch SPB-160, SPB-320, SPB-80-4 Specsheet
Fire Alarm Systems | SPB Audio Power Boosters
SPB Audio Power Boosters
www.boschsecurity.com
u Connects easily to the SP40/2 or SP40S Facilities
Communication System
u Interconnect multiple power boosters (up to
5280 W) to accommodate large installations
The Cooper Wheelock SAFEPATH4 SPB Audio Power
Boosters provide additional supervised audio power
for live voice, recorded messages, or background
music. Fully supervised circuitry is always in effect
even during background music.
The boosters provide the following:
• The SPB‑320 provides 320 W of supervised audio
power over four 80 W circuits
• The SPB‑160 provides 160 W of supervised audio
power over two 80 W circuits
• The SPB‑80/4 provides 80 W of supervised audio
power with 4 A of supervised, synchronizable strobe
power over two 2 A circuits
Combine these boosters and POWERPATH™ NAC
Power Supplies for additional strobe power.
Certifications and approvals
Cooper Wheelock, Inc. holds these Listings and
Approvals:
Region
Certification
USA UL UOQY: Emergency Communication and
Relocation Equipment (UL864, 9th edition), UOXX: Control Unit Accessories,
System (UL864, 9th edition)
UL UCST: Audible Signal Appliances, Gener-
al Siganal (UL464) (SPB-80/4 and
SPB-160 models)
CSFM see our website
Installation/configuration notes
Compatibility Information
The following products are compatible with the SPB
Audio Power Boosters:
Category Product ID Product Description
Communication
Systems
SP40/2 Facility communications
system (red)
SP40/2‑B Facility communications
system (black)
SP40S Facilities communication
system (red)
SP40S‑B Facility communications
system (black)
2 | SPB Audio Power Boosters
Splitters SP4Z‑A/B Supervised speaker audio
splitter
Power Supplies PS‑12/24‑8CPNAC power supply
PS‑12/24‑8MPAuxiliary power supply
PS‑24‑8CP NAC power supply/charger
Mounting Considerations
The power booster(s) must be mounted in a location
within the environmental limits specified for indoor
control panels. Do not install in hazardous areas.
Wiring Considerations
The audio input can be two‑wire or four‑wire:
Two‑wire: Supervision is performed over the same
wires as the audio input signal. If any one audio
booster in the system goes into a trouble condition, all
secondary operations (background music, telephone
paging) disengage from all audio boosters in the
system. This conserves battery backup power if AC
power is lost. When an alarm message or a live voice
message from the microphone is broadcast by the
SP40/2 or SP40S control panel, the amplifier section
is energized and the message is broadcast through the
audio booster network.
Four‑wire: An alarm signal is sent to the audio boosters
over an additional pair of wires. If any audio booster in
the system goes into a trouble condition, only that
audio booster loses secondary operations.
Notice
When using the SPB‑80/4, two additional wires
are needed for strobe connections.
The terminals accept wiring from 22 AWG to 12 AWG
(ISO 0.34 mm2 to 4 mm2).
Notice
Notification appliance circuits require a UL Listed
end‑of‑line resistor (10 kΩ, 0.5 W).
Parts included
Environmental
Relative Humidity: Up to 85.5% non‑condensing
Temperature
(operating):
at +86 ± 3.6°F (+30 ± 2°C)
+32°F to +120°F (0°C to +49°C)
Mechanical
Color: Red
Dimensions (H x W x D): 21 in. x 16 in. x 6 in.
Material: 0.60 in. (15 mm) steel
Weight (without
batteries):
(53.3 cm x 40.6 cm x 15.2 cm)
36 lb (16.3 kg)
Audio
Frequency Response: BGM: 275 Hz to 15 kHz (±3 dB)
Voice: 400 Hz to 6.5 kHz (±3 dB)
Outputs
Trouble Relay*: One set of non‑supervised Form C
Visual NAC: Two supervised output circuits each rated at
Central Amplified Audio Circuit
SPB-80/4: One supervised output circuit selectable for
SPB-160: Two supervised output circuits each selectable
SPB-320 Four supervised output circuits each selectable
(normally‑closed) contacts rated at 2.0 A at
24 VDC maximum for resistive loads
2.0 A at 24 VDC
25 V or 70.7 V output at 80 W maximum
for 25 V or 70.7 V output at 80 W maximum
for 25 V or 70.7 V output at 80 W maximum
*Do not exceed contact ratings. Doing so can cause
the relay to fail, preventing indication of a trouble
condition.
Trademarks
All hardware and software product names used in this
document are likely to be registered trademarks and
must be treated accordingly.
Quant. Component
1 Power booster
1 Hardware pack
1 Literature pack
Technical specifications
Electrical
Current Draw (alarm): 9 A per amplifier board
Current Draw (standby): 120 mA per amplifier board
Voltage (input): 120 VAC, 3.8 A, 50 Hz or 60 Hz
Ordering information
SPB‑320 Supervised Audio Power Booster (320 W)
Provides four 80 W circuits.
Order number SPB-320
SPB‑160 Supervised Audio Power Booster (160 W)
Provides two 80 W circuits.
Order number SPB-160
SPB‑80/4 Supervised Audio Power Booster (80 W) with
Strobe Power
Provides two 2 A circuits.
Order number SPB-80/4
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