ARCHITECTS AND ENGINEERS SPECIFICATIONS
The Cluster Speaker shall be the STH-4M30WC or approved equal. The Cluster Speaker shall consist of: four (4) STH-30
horns and one (1) supervised 100 candela DC-MAX-C strobe or equivalent.
Each STH-4M30WC shall be capable of producing 125 dBA @ 1 watt, 1 meter.
The Cluster Speaker shall comply with OSHA 1910.165 and UL Standard 1638.
The STH-30 horns shall measure 10”W x 10.5”L and shall be prefabricated on the sides of a 13.50” x 15.50” x 6.25” NEMA
4X fiberglass enclosure.
The DC-MAX-C strobe shall measure 6.2” in diameter and be 5” in height, and shall be prefabricated in the center of the
cover of a 13.50” W x 15.50” L x 6.25” H NEMA 4X fiberglass enclosure.
Mounting of the Cluster Speaker shall be accomplished by using the four predrilled holes in the enclosure.
The STH-4M30WC shall weigh approximately 45 lbs.
The STH-4M30WC shall measure approximately 36.5” W x 34.5” L x 11” H
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.
• Up to 30 watts RMS of power handling capability
• Superior intelligibility and sound dispersion
• Built-in 70 Volt transformer
• 125 dBA @ 1 watt, 1 meter
• Frequency Response: 375 – 10 KHz
• Power taps: 70 Volts: 2.0, 3.8, 7.5, 15.0 & 30.0
• Swivel mounted for easy angle adjustment
• 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*
DC-MAX-C Strobe
STH-30 Horn Loudspeakers
Note: The STH-4M30WC is not intended for UL required Fire Life Safety applications.
See Wheelock Catalog or Website for products to meet Fire Life Safety Applications.
Model Number Order Code Description
STH-4M30WC 9762
Speaker/Visual system supplied with four STH-30 horns
and one DC-MAX-C strobe mounted to a NEMA Type 4X
fiberglass enclosure
*The Series STH-4M30WC is a special order.
S9005 STH WP 06/06
WE ENCOURAGE AND SUPPORT NICET CERTIFICATION
3 YEAR WARRANTY
Made in USA
273 Branchport Avenue
Long Branch, NJ 07740
Phone: (800) 631-2148
Fax: (732) 222-2588
www.cooperwheelock.com
