Icom
Icom SP-37 Hailer Horn
Best external hailer for boaters needing reliable marine communication and signaling.
The Icom SP-37 Hailer Horn is engineered to deliver clear audio output for foghorn and hailer functions on your vessel. Built by the trusted marine electronics manufacturer Icom, this speaker features a durable, rectangular design for easy mounting. It handles a continuous input power of 30 Watts, with peaks up to 40 Watts, and maintains a 4 Ohm impedance. Weighing 1050 grams, this unit is sold individually to seamlessly integrate into your marine communication setup, providing essential signaling and hailing capabilities on the water.
$74.95
Owner Satisfaction
4.6
/ 5
Category Rank
103
/ 495
#103 in Marine Speakers
Price vs Category Average
-75%
Below average
Rated Input Power
30
/ W
Who it's for
- Captains needing clear communication in noisy maritime environments
- Icom radio owners seeking seamless PA and foghorn integration
- Vessel operators requiring durable gear for harsh saltwater conditions
Who should skip it
- Owners of smaller boats with limited mounting space
- Budget-conscious buyers looking for generic or non-marine alternatives
- DIY installers avoiding complex wiring and power supply requirements
Performance breakdown
Audio Clarity
Crisp output ensures foghorn signals cut through harsh marine environments.
Power Handling
Robust 30W continuous rating provides reliable volume for essential hailing.
Build Durability
Rugged construction withstands the constant exposure of demanding saltwater conditions.
Mounting Versatility
Standard surface mount design allows for straightforward installation on most vessels.
Signal Projection
Engineered specifically to project sound effectively across open water distances.
System Integration
Standard 4 Ohm impedance ensures seamless compatibility with most marine radios.
Key Specs
Rated Input Power
30 W
Maximum Input Power
40 W
Impedance
4 Ω
Dimensions (W x H x D)
7.87 x 4.72 x 9.13 inches (20 x 12 x 23.2 cm)
Weight
2.3 lb (1050 g)
Speaker Type
Surface Mount
Enclosure Type
Sealed
Connectivity Type
Wired
Features
- Clear audio for foghorn and hailer functions
- Durable rectangular design for mounting
- Handles up to 40W peak input power
- Surface mount speaker type
- Designed for marine communication needs
- 30W rated input power
- 4 Ohm impedance
What customers say
Customers overwhelmingly praise the Icom SP-37 Hailer Horn for its superior performance and exceptional reliability in harsh marine settings. The acoustic output is consistently noted as unparalleled, delivering critical messages clearly through significant engine noise and adverse weather, which users view as a vital safety asset. Furthermore, the robust, weather resistant construction confirms Icom's reputation for durability against saltwater exposure. While the initial investment is substantial, most users agree the premium quality and dependable operation justify the cost. This accessory is widely regarded as the essential standard for reliable vessel communication where performance cannot be compromised.
Know before you buy
Yes, the SP-37 is specifically engineered to provide clear, reliable audio output for both foghorn and hailer functions on your vessel.
The SP-37 is a surface-mount speaker designed for straightforward installation. You will need to secure it to a flat surface on your vessel using the integrated mounting points on its rectangular housing.
With a rated input power of 30 Watts and a peak capacity of 40 Watts, this speaker is compatible with most standard marine radio hailer outputs. Ensure your radio's output matches the 4 Ohm impedance for optimal performance.
The SP-37 features a sealed enclosure designed to withstand the marine environment, ensuring the internal components remain protected from moisture and salt spray during operation.
The speaker is sold as an individual unit. While it features a surface-mount design, you should verify that your specific installation location has the necessary clearance for its 7.87 x 4.72 x 9.13-inch dimensions.
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