Wheelock Series STH-15S Speaker Horn
The Wheelock Series STH-15S supervised horn loudspeakers are surface-mounting, high-efficiency units for life safety and communication system applications. When used with compatible control equipment, they provide high-intelligibility voice reproduction and signal transmission for indoor or outdoor emergency alarm and protective signaling.
| Catalog Number | STH-15-S, STH-15SR |
| Finish Color | Red or Gray |
| Power Rating | 15 Watts |
| Frequency Response | 400-4,000 Hz |
| Sensitivity | 102 dB @ 15 watts @ 10 ft. |
| Transformer | Selectable 25/70/100 V |
| Anechoic Measurements | Code 3 Tone: 107.2 dBA; Slow Whoop: 108.5 dBA; Siren: 107.8 dBA |
| Mounting | Wall or Ceiling |
| Approvals | UL Standard 1480, CSFM |
Features
- 15-Watt High Efficiency Compression Driver
- Weather-resistant, vandal-resistant aluminum construction assures protection against water, humidity, vermin, and corrosion
- Reentrant acoustic path
- 25/70/100 V transformer featuring a screwdriver adjustable, 7-position watt/impedance selection switch
- 5 mfd Capacitor for Line Supervision
- Simplified, universal-mounting bracket adjustable in horizontal and vertical planes with banding slots for beam or pillar mounting
- Installation terminals and power selector are recessed mounted, and protected by the metal interface adapter, or clear plastic shield
