wheelock STH-4MSR, STH-4R, STH-3MSR, STH-3R, STH-2MSR User Manual

Series STH Cluster Speakers

U

L

®

STH-4MSR
STH-3MSR
STH-2MSR
SHMP-R

Description:

The Wheelock Series Cluster Speakers are designed for ceiling
or wall mounting for high ambient noise environments. The
Cluster Speakers are available in multiple configurations. A
speaker/visual (Series STH-MSR) and speaker only (Series
STH-R or STH-G) alerting system. All alerting systems are
equipped with UL listed STH-15SR or STH-15S supervised
horn loudspeakers and the speaker/visual system has a UL
listed DC-MAX-C strobe, mounted to a steel enclosure.

STH-4MSR and STH-4R supplied with four STH-15SR Horns
STH-3MSR and STH-3R supplied with three STH-15SR Horns
STH-2MSR and STH-2R supplied with two STH-15SR Horns
STH-2G supplied with two STH-15S Horns

All STH MSR Series Cluster Speakers are supplied with one
DC-MAX-C strobe with clear lens.

Applications for Series Cluster Speakers:
Designed for use in Manufacturing Plants, Processing
Plants and Factories with high ambient noise levels.

• Hazard warning / alerting

• Industrial audible and visual signaling

• Process control area notification

• Warning lights

• Security alert indication

STH-4R
STH-3R
STH-2R
STH-2G

STH-4MSR

Features for all Cluster Speaker Models:

• Complies with UL Standard 1480, NFPA 72, NFPA 101 and
OSHA 1910.165. Speaker/visual system also complies with
UL Standard 1638

• Cluster Speaker systems come fully assembled.

• High efficiency unit for life safety and/or general communication
announcing/notification

• Provides high-intelligibility voice reproduction and available
high intensity visual alerting for emergency alarm and
protective signaling

• Speakers and Strobes are prefabricated to a 10” x 10” x 6”
steel enclosure for indoor use

• Mounts to ceiling or wall

• Only 1 pair of wires needed for audio connections.

• Each individual STH-15SR or STH-15S horn is capable of
delivering up to 102 dB at 15 watts at 10 feet

• Omni-directional sound

• Labor savings – (both time and money)

• Conduit knockouts for ½” or ¾” coupling

• Shipped in one box

The SHMP- R is a UL listed adapter plate designed for mounting
one STH-15SR horn to a series RSSP strobe mounting plate.
For surface mount applications, the SBL-R surface mount
backbox is required.

SHMP-R

Architects and Engineers Specifications

The Cluster Speaker shall be the STH-4MSR, STH-4R or STH-3MSR, STH-3R or STH-2MSR, STH-2R, STH-2G or approved equal. The
Cluster Speaker shall consist of: four (4) STH-15SR supervised horns for the STH-4MSR, STH-4R or three (3) STH-15SR supervised
horns for the STH-3MSR, STH-3R or two (2) STH-15SR or STH-15S (for the STH-2G) supervised horns for the STH-2MSR, STH-2R,
STH-2G or equivalent. The Series STH-MSR Cluster speakers shall also consist of one (1) supervised 100 candela DC-MAX-C strobe
or equivalent.
The Cluster Speaker shall comply with UL Standard 1480, NFPA 72, NFPA 101 and OSHA 1910.165. The Cluster Speakers with strobe
shall also comply with UL Standard 1638.
The STH-15SR or STH-15S horns shall be supervised horns measuring 7.87”W x 8.75”H x 9.32”D and prefabricated on the sides of
a 10” x 10” x 6” steel enclosure.
The DC-MAX-C strobe shall be 6.2” diameter and prefabricated in the center of the cover of a 10” x 10” x 6” steel enclosure, for series
STH-MSR.
Mounting of the Cluster Speaker shall be accomplished by using the four pre-drilled holes in the enclosure or by drilling new holes in
order to be compatible with other mounting conditions.
The SHMP-R shall be a 4” x 4” UL listed adapter plate with pre drilled holes for mounting the STH-15SR or STH-15S to a Series RSSP
plate.

STH-15SR or STH-15S Horn Loudspeakers

• Supervised weather proof horn speaker

• Up to 15 watts RMS of power handling capability

• Superior intelligibility and sound dispersion

• Built-in 25/70 Volt transformer w/screwdriver adjustable watt­age tape selector

• Frequency Response: 400 – 14,000 Hz

• Power taps: 25 Volts: .48, .94, 1.8, 7.5, and 15

70 Volts: .9, 1.8, 3.8, 7.5, and 15

• Swivel mounted for easy angle adjustment

• Complies with UL Standard 1480

• Refer to Data Sheet S0100 for detailed specs

DC-MAX-C Strobe

• High intensity MAX strobe

• Clear lens made of Lexan

• Powerful 7.5 Joules double flash light burst

• 100 candela, 60 double flashes per minute

• Voltage range: 10.5 VDC to 31.0 VDC

• Complies with UL Standard 1638

• Refer to Data Sheet I1008 for detailed specs

Note: Special orders of different colored lenses are available in Blue,
Red or Amber. Please contact Wheelock for details.

Note: The Series Cluster speaker with MAX Strobe is NOT
designed to operate on a synchronized circuit.

Specifications and Ordering Information*

Model Number Order Code Description

STH-4MSR 8157

STH-3MSR 8156

STH-2MSR 8155

SHMP-R 8154

STH-4R 8186 Speaker System supplied with four STH-15SR horns mounted to a NEMA Type 1 steel enclosure

STH-3R 9753 Speaker System supplied with three STH-15SR horns mounted to a NEMA Type 1 steel enclosure

STH-2R 9752 Speaker System supplied with two STH-15SR horns mounted to a NEMA Type 1 steel enclosure

STH-2G 0101 Speaker System supplied with two STH-15S horns mounted to a NEMA Type 1 gray steel enclosure

Speaker/visual systems supplied with four STH-15SR horns and one DC-MAX-C Strobe mounted to a
NEMA Type 1 steel enclosure

Speaker/visual systems supplied with three STH-15SR horns and one DC-MAX-C Strobe mounted to
a NEMA Type 1 steel enclosure

Speaker/visual systems supplied with two STH-15SR horns and one DC-MAX-C Strobe mounted to a
NEMA Type 1 steel enclosure

UL Listedadapter plate, designed to mount the STH-15SR horn speaker (7938) to a Series RSSP
Strobe Mounting Plate. For surface mountapplications, the SBL2-R (6988) surface mount backbox is
required.

*The Series Cluster Speakers with Max Strobe are a special order.

NOTE: The Series Cluster Speakers with MAX Strobes (STH-4MSR, STH-3MSR, & STH-2MSR) are not intended for UL required Fire Life Safety
applications. See Series STH Cluster Speaker with MCCH Strobe to meet Fire Life Safety Applications.

NOTE: Due to continuous development of our products, specifications and offerings are subject to change without notice in accordance with Wheelock,
Inc. standard terms and conditions.

NOTE: Not intended for washdown areas.

273 Branchport Avenue
Long Branch, NJ 07740
Phone: [phone]
Fax: [phone]
www.cooperwheelock.com

WE ENCOURAGE AND SUPPORT NICET CERTIFICATION

3 YEAR WARRANTY

Made in USA

S9003 STH Max 06/06