Bosch STH-4R Cluster Horn Loudspeakers, Red
SKU
STH-4R
Model No
STH-4R
$1,741.00
Product Highlights
- Multi-directional sound
- Field-selectable taps from 1 W to 15 W for either 25 VRMS or 70 VRMS
- UL-rated reverberant frequency range from 400 Hz to 4 kHz
- Mounts on wall or ceiling
- Conduit knockouts for ½-inch or ¾-inch couplings

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The STH-4R Cluster Horn Loudspeaker is designed for high ambient noise environments such as manufacturing plants, processing plants, and factories. This is available in configurations with four horns that meet the requirements of UL1480. Horn can deliver up to 102 dB at 15 W at 10 feet (3m).
Bosch STH-4R Cluster Horn Loudspeakers Features
Features
- Multi-directional sound: Ensures coverage in all directions, making it ideal for large industrial spaces.
- Field-selectable taps from 1 W to 15 W: Allows for flexible operation in either 25 VRMS or 70 VRMS systems to suit various installation needs.
- UL-rated reverberant frequency range: Provides excellent sound clarity with a frequency range from 400 Hz to 4 kHz, ensuring effective communication.
- Mounts on wall or ceiling: Versatile installation options enhance its adaptability in different environments.
- Conduit knockouts: Designed for ½-inch or ¾-inch couplings, ensuring compatibility with various wiring setups.
Bosch STH-4R Detailed Specifications
| Feature | Detail |
| Model | STH-4R |
| Sound Level | Up to 102 dB at 15 W at 10 feet (3m) |
| Warranty | 5 years |
| Material | Weather-resistant construction |
| Weight | 15 lbs (6.8 kg) |
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