Data Sheet

2 | STH Series Cluster Horn Loudspeakers
Wiring Considerations
Each
horn
is wired to a terminal block inside the galvanized
steel enclosure. Horns can be connected together using the
same wire gauge as the input wire. Refer to the installation
instructions packed with the product for the proper horn
numbering sequence.
Parts Included
Quant. Component
1 Cluster assembly
1 Literature pack
Technical Specifications
Audio Characteristics (Individual Horn)
Frequency Response: UL rated at 400 Hz to 4 kHz at 15 W;
400 Hz to 14 kHz anechoic
Sound Dispersion: 70°
Sound Level (peak): 120 dB at 15 W at 1 m
Environmental Considerations
Temperature (operating): -30°F to +150°F (-35°C to +66°C)
Mechanical Properties
Assembly
Color: G‑models: grey; R‑models: red
Weight (approximate): Two‑horn: 14 lb (6.1 kg)
Three‑horn: 19 lb (8.3 kg)
Four‑horn: 23 lb (10.0 kg)
Enclosure
Dimensions: 10 in. (25.4 cm) square by 6 in. (15.2 cm) deep
Material: galvanized steel
Horns
Dimensions (H x W x D): 8.75 in. x 7.9 in. x 9.3 in.
(22.2 cm x 20.0 cm x 23.7 cm)
Material: Aluminum with baked epoxy finish
Power Requirements
Constant Line Voltage: 25 VRMS or 70 VRMS
Power Handling Capacity (RMS): 15 W
Ordering Information
STH‑2G Two‑horn Cluster Loudspeaker
(grey)
Grey, two‑horn cluster loudspeaker for high
ambient noise
environments with dual voltage
capability (25 VRMS or 70 VRMS) and field‑se-
lectable taps from 1 W to 15 W
STH-2G
STH‑2R Two‑horn Cluster Loudspeaker
(red)
Red, two‑horn
cluster loudspeaker for high am-
bient noise environments with dual voltage ca-
pability (25 VRMS or 70 VRMS) and field‑se-
lectable taps from 1 W to 15 W
STH-2R
STH‑3R Three‑horn Cluster Loudspeaker
(red)
Red, three‑horn cluster loudspeaker for high
ambient noise
environments with dual voltage
capability (25 VRMS or 70 VRMS) and field‑se-
lectable taps from 1 W to 15 W
STH-3R
STH‑4R Four‑horn Cluster Loudspeaker
(red)
Red, four‑horn cluster loudspeaker for high
ambient noise
environments with dual voltage
capability (25 VRMS or 70 VRMS) and field‑se-
lectable taps from 1 W to 15 W
STH-4R
Accessories
RSSP‑24MCWH‑FR 24 VDC High‑candela
Retrofit Strobe (red)
24
VDC
retrofit strobe with field‑selectable in-
tensities of 135 cd or 185 cd
RSSP-24MCWH-FR
RSSP‑241575W‑FR 24 VDC Fixed‑candela
Retrofit Strobe (red)
24 VDC
retrofit strobe listed at 15 cd, but pro-
viding 75 cd on axis
RSSP-241575W-FR
RSSP‑24MCW‑FR 24 VDC Multi‑candela
Retrofit Strobe (red)
24 VDC
retrofit strobe with field‑selectable in-
tensities of 15 cd, 30 cd, 75 cd, or 110 cd
RSSP-24MCW-FR
RSSP‑121575W‑FR 12 VDC Retrofit Strobe
(red)
12 VDC
retrofit strobe listed at 15 cd, but pro-
viding 75 cd on axis
RSSP-121575W-FR
SBL2‑R Retrofit Device Back Box (red)
dimensions 27.8 cm (10.9 in.) x 15.5 cm
(6.1 in.) x 4.3 cm (1.7 in.)
SBL2-R
SHMP‑R Adapter Plate (red)
Red adapter plate
SHMP-R
SHMP‑W Adapter Plate (white)
White adapter plate
SHMP-W
SM‑12/24‑R Single Synchronization
Module (red)
A 12/24 VDC Cooper Wheelock module that
synchronizes notification appliances on
Class B alarm circuits.
SM-12/24-R