Description
7.5W Heavy-Duty In-Vehicle External Speaker
Amplify receiver audio clarity and volume in high-noise operational environments.
The Motorola HSN4031B is a high-output, commercial-grade external speaker engineered to significantly boost the sound performance of Motorola mobile two-way radios and control heads. Delivering 7.5 Watts of crisp, room-filling audio output, this compact external speaker ensures emergency dispatches, team coordinates, and critical voice calls remain clearly audible over cab noise, sirens, diesel engines, and heavy machinery roar.
The HSN4031B is the updated, revised version of the HSN4031A and base HSN4031. Motorola automatically fulfills orders with the latest factory revision, guaranteeing 100% backward physical compatibility while delivering updated manufacturing enhancements.
Built for demanding public safety, utility, transit, and heavy industrial applications, the HSN4031B features a weather-resistant housing constructed to endure vibration, temperature extremes, and rough vehicle transit. The included mounting bracket allows installers to secure the speaker under dashboards, overhead on cabin frames, or along floor humps for direct, targeted audio delivery to drivers and personnel.
Key Features & Benefits
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7.5W Audio Output Power: Delivers powerful, distortion-free sound amplification so critical messages are clearly heard over high ambient background noise.
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Rugged Weather-Resistant Construction: Durable housing engineered to withstand continuous vehicle vibration, dust, moisture, and extreme cab temperatures.
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Optimized Voice Frequency Response: Tuned specifically for clear voice communications, reducing harsh treble and muddy bass for enhanced intelligibility.
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Flexible Mounting Hardware: Includes a sturdy adjustable trunnion mounting bracket that allows precise positioning on vehicle dashboards, transmission humps, or overhead frames.
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Direct Mobile Radio Compatibility: Plugs cleanly into compatible Motorola mobile radio accessory harnesses for fast, hassle-free installation.
Specifications
| Attribute |
Details |
| Brand |
Motorola Solutions |
| Model / SKU |
HSN4031B / HSN4031 |
| Audio Output Power |
7.5 Watts |
| Construction |
Weather-Resistant High-Impact Housing |
| Mounting Style |
Adjustable Trunnion Mounting Bracket |
| Application |
In-Vehicle External Audio Amplification |
Compatibility
|
|
|
|
| APX1500e |
APX2500e |
APX4500e |
APX550e |
| APX5500e |
APX6500 |
APX6500e |
APX6500LI |
| APX7500 |
APX8500 |
PM1500 |
|
What's Included
| Description |
SKU/Model |
Status |
| Motorola 7.5W External Mobile Radio Speaker |
HSN4031B |
Included |
| Adjustable Mounting Trunnion Bracket & Hardware Pack |
- |
Included |
| Integrated Radio Connection Cable Assembly |
- |
Included |
Recommended Accessories
Power & Mounting Accessories
Microphones & Control Heads
More Resources
Frequently Asked Questions
What is the power output of the Motorola HSN4031B external speaker?
The HSN4031B delivers 7.5 Watts of amplified audio output, providing high-volume sound clarity inside noisy vehicle cabs.
What is the difference between HSN4031, HSN4031A, and HSN4031B?
These model numbers represent incremental factory engineering revisions. HSN4031B is the current active revision and directly replaces all earlier HSN4031 and HSN4031A models with 100% backward physical compatibility.
Where can this speaker be installed in a vehicle?
The speaker includes an adjustable mounting trunnion bracket that allows installation under vehicle dashboards, along floor humps, or on overhead mounting racks.
Does this speaker require a separate power hookup?
No, the speaker receives its audio signal directly from the mobile radio transceiver or control head accessory harness connection cable.
Warranty
1-year manufacturer's warranty.
