Specifications

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273 Branchport Avenue • Long Branch, NJ 07740 • [phone] • www.wheelockinc.com
Series STH-15S Supervised
Horn Loudspeaker
Description:Description:
Description:Description:
Description:
Wheelock’s Series STH-15S Supervised Horn Loudspeakers are
equipped with a compression driver providing up to 15 watts
of power handling capability, superior intelligibility and
dispersion to achieve maximum sound projection and
penetration.
Features:Features:
Features:Features:
Features:
• Approvals Include: UL Standard 1480 – (Speakers for Fire
Protective Signaling Systems), California State Fire Marshal
(CSFM)
• 15-Watt High Efficiency Compression Driver
• Weather-resistant, vandal-resistant aluminum construction
assures protection against water, humidity, vermin, and
corrosion
• Reentrant acoustic path
• 25/70/100V transformer featuring a screwdriver adjustable,
7 position watt/impedance selection switch
• 5 mfd Capacitor for Line Supervision
• Universal-mounting bracket
• Installation terminals and power selector are recessed
mounted, and protected by the metal interface adapter, or
clear plastic shield
Specification and Ordering InformationSpecification and Ordering Information
Specification and Ordering InformationSpecification and Ordering Information
Specification and Ordering Information
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Series STH-15S
Series SHMP-R
02/05
2-8
Watts
dB @
10 Feet Watts
dB @
10 Feet Watts
dB @
10 Feet
1 5,000 0.9W 90 Not Used Not Used 2.0W 93
2 2,500 1.8W 93 Not Used Not Used 4.0W 96
3 1,300 3.8W 96 0.48W 87 7.5W 99
4 666 7.5W 99 0.94W 90 15.0W 102
5 333 15.0W 102 1.8W 93 Not Used Not Used
6 89 Not Used Not Used 7.5W 99 Not Used Not Used
7 45 Not Used Not Used 15.0W 102 Not Used Not Used
25 Volts 100 Volts
Setting
Impedance
(Ohms)
70.7 Volts
Code-3 Tone 107.2 dBA
Slow Whoop 108.5 dBA
Siren 107.8 dBA
Anechoic measurements:
15 watt tap @ 10 feet
Specifications (UL RATING)
POWER RATING: 15 Watt Continuous
FREQUENCY RESPONSE: 400-4,000 Hz
SENSITIVITY: 102 dB @ 15 Watts @ 10’
SPECIFICATIONS GENERAL
DISPERSION ANGLE: 70 Degrees (-6 dB @ 2,000 Hz Octave Band)
STH-15S & STH-15SR Power Switch Selections