Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
$315.00
Sim Lim Square 02-81 10am-7pm Daily.
Whatsapp Enquiry Project +65 98534404, Technical Support +65 81120788, Site Visit Maintenance +65 81985572.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
Public Warning System MS-30D 30W Metal Horn Speaker
The MS-30D Public Warning System Horn Speaker is a powerful and durable 30W outdoor announcement speaker designed for clear long-distance sound projection. Built with a heavy-duty metal horn construction, this public address speaker is ideal for emergency warning systems, industrial communication, marine environments, and large outdoor installations where reliability and high audio output are essential.
With its robust stainless steel screws and built-in thermal fuse protection, the MS-30D ensures stable operation even in demanding environments such as factories, ports, construction sites, warehouses, and public safety zones. Its large Dia.390 x L437mm horn design allows sound to travel further while maintaining clarity, making it perfect for warning alerts, evacuation announcements, and general public broadcasting.
Key Features of MS-30D Public Warning Horn Speaker
Powerful 30W Audio Output
The 30-watt output power delivers strong and clear sound coverage over long distances. This makes it suitable for wide outdoor areas where normal speakers may not provide enough volume.
Durable Metal Horn Construction
The heavy-duty metal horn body is designed to withstand harsh environmental conditions such as heat, humidity, wind, and dust. This makes the MS-30D ideal for outdoor warning systems and industrial installations.
Stainless Steel Mounting Screws
The horn uses stainless steel screws that resist corrosion and rust. This feature is especially important for marine environments, coastal installations, and outdoor security systems.
Built-in Thermal Fuse Protection
The integrated thermal fuse protects the speaker from overheating caused by prolonged high power operation. This safety feature helps extend the lifespan of the system and prevents internal damage.
Wide Sound Projection
With a large 390mm diameter horn, the MS-30D is engineered for long-distance sound projection, ensuring announcements and warning signals are heard clearly across large areas.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
MS-30D Specifications
- Model: MS-30D
- Type: Public Warning System Horn Speaker
- Power Output: 30W
- Weight: 5.7 Kg
- Dimensions: Dia.390 x L437mm
- Material: Metal Horn
- Mounting Hardware: Stainless Steel Screws
- Protection: Built-in Thermal Fuse
Where the MS-30D Public Warning System is Commonly Used
The MS-30D horn speaker is widely used in locations that require loud and clear emergency announcements.
Industrial Facilities
Factories and warehouses rely on horn speakers for safety announcements, shift alerts, and emergency evacuation signals.
Construction Sites
Large construction areas require high-volume communication systems to alert workers quickly.
Marine and Port Areas
Because of its corrosion-resistant stainless steel screws, the MS-30D performs well in harbours, ships, and coastal installations.
Public Safety Systems
Municipalities use horn speakers for disaster warning systems, evacuation alerts, and public announcements.
Schools and Campuses
Large campuses benefit from wide-area announcement coverage for security alerts or daily broadcasts.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
Why Choose the MS-30D Public Warning Speaker
Choosing the MS-30D 30W horn speaker provides several advantages for professional public address installations.
Reliable Outdoor Performance
The rugged metal construction ensures the speaker can operate in tough outdoor environments.
High Audio Coverage
The large horn design amplifies sound efficiently, allowing announcements to travel further.
Safety Protection
The built-in thermal fuse prevents overheating and protects the internal components.
Long-Term Durability
Stainless steel hardware improves resistance against rust and corrosion.
Ideal for Warning Systems
Designed specifically for public warning and emergency announcement systems.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
Installation of MS-30D Horn Speaker
Installing the MS-30D is straightforward when integrated into a public address (PA) system or warning system amplifier.
Basic Installation Steps
- Choose Mounting Location
Install the horn at a high position such as poles, walls, or towers for maximum sound coverage. - Secure the Mounting Bracket
Use the provided stainless steel screws to firmly attach the speaker. - Connect to Amplifier
Wire the speaker to the PA amplifier output line according to the system design. - Test Audio Output
Play an announcement or signal to confirm clear sound projection.
For large installations, it is recommended to use professional technicians to ensure proper wiring and system balance.
Common Issues and Solutions
Low Sound Output
Possible Cause: Incorrect amplifier settings or wiring.
Solution: Check amplifier power output and cable connections.
Distorted Audio
Possible Cause: Overloading or amplifier mismatch.
Solution: Ensure the amplifier wattage matches the speaker rating.
No Sound
Possible Cause: Loose wiring or faulty amplifier channel.
Solution: Inspect connections and test with another speaker line.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
Maintenance Tips
To keep the MS-30D public warning speaker performing well for many years:
- Regularly inspect mounting brackets and screws.
- Clean dust or debris from the horn opening.
- Ensure wiring remains insulated and secure.
- Avoid operating continuously at maximum volume.
Routine maintenance helps ensure consistent and reliable emergency communication.
Warranty Information
Most public warning horn speakers like the MS-30D typically come with a manufacturer warranty ranging from 6 months to 1 year, depending on the supplier. Always confirm warranty terms with the seller before purchase.
Conclusion
The MS-30D 30W Public Warning System Horn Speaker is a powerful and dependable solution for large-area announcement and emergency alert systems. Its durable metal horn, stainless steel hardware, and built-in thermal fuse make it highly suitable for outdoor and industrial environments.
Whether used in factories, construction sites, ports, campuses, or public safety systems, the MS-30D provides clear, loud, and reliable communication when it matters most.
How the MS-30D 30W Public Warning System Horn Speaker is Designed and Manufactured
The MS-30D Public Warning System is engineered to deliver powerful long-distance sound projection while maintaining durability in outdoor and industrial environments. The design combines acoustic engineering, mechanical durability, and electrical protection to ensure reliable performance in public warning and announcement systems.
Below is an explanation of how the MS-30D horn speaker is designed and manufactured.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
1. Acoustic Horn Design
The most important part of the MS-30D is its metal horn structure, which is specifically designed to amplify sound naturally.
Purpose of the Horn Shape
The cone-shaped horn helps direct and project sound waves over long distances. Instead of spreading sound in all directions like a normal speaker, the horn focuses the sound forward, making announcements louder and clearer.
Engineering Considerations
Engineers calculate several acoustic factors during design:
- Horn diameter: 390 mm for wide sound projection
- Horn length: 437 mm to control sound direction
- Sound dispersion angle: optimized for outdoor coverage
- Material thickness: strong enough to prevent vibration distortion
This horn structure allows a 30W speaker to cover large outdoor spaces efficiently.
2. Internal Driver Unit Manufacturing
Inside the horn is the driver unit, which converts electrical signals into sound.
Key Components
Voice Coil
A copper wire coil that moves when electrical current flows through it.
Magnet Assembly
A permanent magnet creates a magnetic field that interacts with the voice coil.
Diaphragm
A thin metal or polymer plate attached to the voice coil that vibrates to produce sound waves.
How It Works
- The PA amplifier sends an audio signal to the speaker.
- The voice coil receives the electrical signal.
- The coil moves inside the magnetic field.
- The diaphragm vibrates.
- The horn amplifies and projects the sound outward.
This system allows the MS-30D to produce clear and powerful announcements for warning systems.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
3. Metal Horn Fabrication Process
The horn body of the MS-30D is typically made from high-grade aluminum or steel.
Manufacturing Steps
1. Metal Sheet Cutting
Large metal sheets are cut into precise shapes using laser cutting or industrial stamping machines.
2. Metal Forming
The metal is then shaped into the horn cone using hydraulic pressing or rolling machines.
3. Welding or Riveting
The formed sections are joined together to create a solid horn body.
4. Surface Treatment
The horn undergoes protective coating such as:
- Powder coating
- Anti-rust paint
- Weather-resistant finishing
This protects the speaker from rain, UV exposure, and corrosion.
4. Stainless Steel Hardware Installation
The MS-30D uses stainless steel screws and mounting hardware for better durability.
Why Stainless Steel is Used
- Rust resistant
- Strong structural support
- Ideal for marine environments
- Long service life
These screws secure the driver unit, mounting bracket, and horn body.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
5. Thermal Fuse Safety Design
To protect the speaker from overheating, the MS-30D includes a thermal fuse.
How the Thermal Fuse Works
The thermal fuse acts as a temperature safety switch.
- If the speaker operates at excessive temperature
- The fuse disconnects the circuit
- Preventing damage to the voice coil and internal components
This protection is important for continuous public warning systems that may operate for long periods.
6. Weather-Resistant Design
Public warning speakers like the MS-30D are designed for outdoor installation.
Engineers incorporate several protective features:
- Sealed driver housing
- Anti-corrosion metal coating
- Water drainage design
- UV-resistant materials
These features allow the speaker to work reliably in environments such as:
- Factories
- Construction sites
- Ports and ships
- Security warning systems
- Outdoor PA systems
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
7. Mounting Bracket Engineering
The mounting bracket is designed for flexible installation.
Key Design Features
- Adjustable angle mounting
- Heavy-duty steel support
- Secure pole or wall installation
- Vibration resistance
This allows installers to direct sound exactly where it is needed.
8. Quality Testing and Inspection
Before the MS-30D speaker is released for sale, it undergoes several tests.
Common Factory Tests
Sound Pressure Level Test
Ensures the speaker produces the correct volume.
Power Handling Test
Confirms it can safely handle 30W continuous power.
Environmental Testing
Simulates rain, heat, and humidity conditions.
Electrical Safety Test
Ensures proper insulation and thermal fuse function.
Only units that pass these tests are shipped to distributors.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
9. Final Assembly
The final assembly process includes:
- Installing the driver unit into the horn body
- Connecting internal wiring
- Mounting the thermal fuse protection
- Securing parts with stainless steel screws
- Attaching the mounting bracket
- Performing final sound testing
After inspection, the speakers are packaged and distributed for PA system installations.
Conclusion
The MS-30D 30W Public Warning Horn Speaker is designed through a combination of acoustic engineering, durable materials, and safety protection features. Its large metal horn structure, powerful driver unit, stainless steel hardware, and built-in thermal fuse ensure clear sound projection and long-term reliability in demanding environments.
This careful design and manufacturing process makes the MS-30D an excellent choice for public warning systems, emergency announcements, industrial PA systems, and outdoor communication networks.
The MS-30D 30W Public Warning Horn Speaker is mainly purchased by organizations that need to broadcast announcements, warnings, or emergency alerts to large areas. These types of horn speakers are widely used in public address (PA) systems because they can project sound clearly over long distances, especially outdoors.
Below are the most common types of buyers for this product.
1. Factories and Industrial Facilities
Manufacturing plants and warehouses often buy horn speakers like the MS-30D to communicate with workers across noisy environments.
Why they buy it:
- Emergency alerts
- Shift change announcements
- Safety warnings
- Evacuation instructions
Factories use PA horn speakers because they can cut through industrial noise and reach large work areas.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
2. Construction Sites
Large construction projects need loud communication systems.
Uses:
- Worker safety announcements
- Emergency warnings
- Equipment operation alerts
Because construction sites are usually large and noisy, horn speakers are ideal for clear long-distance sound.
3. Government and Public Safety Authorities
Government agencies install public warning speakers for emergency alert systems.
Examples:
- Disaster warning systems
- Civil defence alerts
- Flood or tsunami warning
- Public evacuation announcements
These systems are often installed on poles, buildings, or towers to warn communities during emergencies.
4. Ports, Ships, and Marine Industry
Marine environments frequently use horn speakers.
Who buys them:
- Shipyards
- Cargo ports
- Offshore platforms
- Fishing harbors
The stainless steel screws and metal horn design help prevent corrosion, which is important in salty environments.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
5. Schools and Universities
Educational campuses use PA horn speakers for campus-wide announcements.
Common uses:
- Morning announcements
- Emergency alerts
- Security warnings
- Event communication
Schools often install horn speakers outdoors to cover playgrounds, sports fields, and large courtyards.
6. Transportation Facilities
Airports, train stations, and bus terminals use horn speakers to manage crowds.
Typical announcements:
- Safety messages
- Platform instructions
- Emergency alerts
- Crowd control messages
Large transportation hubs rely on PA systems to ensure announcements are heard across large spaces.
7. Security and Surveillance Integrators
Companies that install CCTV and security systems often purchase these speakers to integrate with security setups.
For example:
- CCTV systems with audio warning
- Intrusion detection alerts
- Perimeter warning systems
- Remote announcements
Many modern systems allow security operators to speak through speakers remotely.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
8. Event Organizers and Outdoor Venues
Horn speakers are also used temporarily for large outdoor events.
Examples:
- Sports fields
- Community events
- Festivals
- Outdoor markets
They help ensure announcements can be heard across large crowds.
9. Military and Defense Installations
Military bases and training areas use horn speakers for:
- Drill commands
- Warning signals
- Emergency communication
These environments require durable and high-volume audio systems.
✅ Simple summary:
The MS-30D is usually bought by organizations that need loud, clear communication over large outdoor areas.
Typical buyers include:
- Factories
- Warehouses
- Construction companies
- Government emergency systems
- Ports and marine industry
- Schools and campuses
- Airports and transport hubs
- Security system installers
- Event organizers
When the MS-30D 30W Public Warning Horn Speaker is installed in marine environments (such as ships, ports, offshore platforms, or coastal areas), it may face some challenges due to salt air, humidity, vibration, and weather exposure. These conditions can affect the speaker over time if not properly maintained.
Below are the most common issues and practical ways to solve them.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
1. Corrosion from Salt Air
Problem
Marine environments contain salt particles in the air, which can cause metal parts to rust or corrode over time. Even durable speakers may experience corrosion on:
- Mounting brackets
- Screws
- Metal horn body
- Electrical terminals
Solution
- Use stainless steel mounting hardware (which the MS-30D already includes).
- Apply anti-corrosion spray or marine protective coating on exposed metal parts.
- Perform regular cleaning with fresh water to remove salt deposits.
- Install the speaker under a small protective cover or roof if possible.
2. Water or Moisture Entering the Speaker
Problem
Heavy rain, sea spray, or condensation can allow moisture to enter the driver unit, which may cause:
- Distorted sound
- Short circuits
- Internal rust
Solution
- Install the speaker facing slightly downward to prevent water from entering the horn.
- Ensure the rear cable entry is sealed with waterproof connectors.
- Use marine-grade waterproof cables and glands.
- Periodically check seals and cable connections.
3. Sound Distortion Due to Salt or Dust Build-Up
Problem
Salt particles, dust, and debris can accumulate inside the horn opening, affecting sound quality.
Signs include:
- Lower volume
- Muffled announcements
- Distorted audio
Solution
- Clean the horn opening every few months.
- Use compressed air or a soft cloth to remove buildup.
- Avoid using high-pressure water directly into the horn.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
4. Vibration from Ships or Machinery
Problem
Ships, engines, and port machinery produce constant vibration, which may loosen mounting bolts or wiring.
This may cause:
- Rattling sound
- Loose bracket
- Cable disconnection
Solution
- Use vibration-resistant mounting brackets.
- Tighten bolts regularly.
- Install rubber vibration dampers between the bracket and mounting surface.
- Secure cables with cable clamps.
5. Overheating from Continuous Operation
Problem
In warning systems that run for long periods, the speaker may generate heat.
If heat builds up, it can affect the voice coil or internal components.
Protection
The MS-30D includes a thermal fuse, which automatically disconnects the speaker if temperature becomes too high.
Solution
- Use the correct PA amplifier wattage.
- Avoid running the speaker continuously at maximum volume.
- Allow short cooling periods during long announcements.
6. Cable Damage from Marine Conditions
Problem
Marine environments can damage cables due to:
- UV exposure
- Salt corrosion
- Physical movement
Damaged cables may cause intermittent sound or no audio output.
Solution
- Use marine-grade shielded cables.
- Protect cables inside PVC or metal conduits.
- Check wiring connections regularly.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
7. Reduced Sound Coverage Due to Wind
Problem
Strong coastal winds can affect how sound travels, making announcements harder to hear.
Solution
- Install the horn higher above ground level.
- Aim the horn towards the main listening area.
- Use multiple speakers for wide coverage if the area is large.
Simple Marine Maintenance Checklist
To keep the MS-30D horn speaker working reliably in marine environments:
✔ Inspect screws and brackets every 3–6 months
✔ Clean salt deposits from the horn surface
✔ Check waterproof cable connections
✔ Ensure mounting bolts are tight
✔ Test the speaker sound regularly
Routine maintenance greatly extends the lifespan of marine-installed speakers.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
✅ Summary
Common marine issues for horn speakers include:
- Salt corrosion
- Moisture ingress
- Dust or salt buildup
- Vibration loosening hardware
- Cable damage
- Wind affecting sound projection
With proper installation, stainless steel hardware, waterproof wiring, and periodic maintenance, the MS-30D public warning horn speaker can operate reliably in marine and coastal environments for many years.
For a Public Warning Horn Speaker like the MS-30D (30W), the warranty usually depends on the manufacturer or supplier, but most PA horn speakers in this category typically come with about 1 year manufacturer warranty.
Typical Warranty for MS-30D Horn Speakers
Standard Warranty Period
- Usually 12 months (1 year) from the purchase date.
What the Warranty Usually Covers
- Manufacturing defects
- Internal driver or voice coil failure
- Thermal fuse malfunction
- Factory assembly issues
What the Warranty Usually Does NOT Cover
- Physical damage (drops, impact)
- Water damage from improper installation
- Corrosion from extreme marine exposure without protection
- Incorrect amplifier connection or overloading
- Wiring mistakes during installation
Warranty Tips for Marine or Outdoor Use
Since horn speakers like the MS-30D are often used outdoors:
- Install under shelter or canopy if possible
- Use waterproof cables and connectors
- Clean salt buildup regularly in marine areas
- Avoid running the speaker at maximum volume continuously
These steps help prevent damage that may not be covered by warranty.
Public warning system MS-30D 30W Weight 5.7Kg Dimensions: Dia.390 x L437mm Metal horn Screws made of stainless steel with thermal fuse NEW
Contact Choicecycle (SGCCTV Singapore)
If you are looking for Public Warning Systems, Marine Horn Speakers, or PA System Solutions in Singapore, contact Choicecycle (SGCCTV).
SGCCTV Choicecycle
📍 Sim Lim Square #02-81, Singapore
📞 WhatsApp: +65 9853 4404
📧 Email: enquiry@choicecycle.com.sg
🌐 Website: https://sgcctv.com.sg
🕒 Operating Hours: 11 AM – 8 PM
Donec accumsan auctor iaculis. Sed suscipit arcu ligula, at egestas magna molestie a. Proin ac ex maximus, ultrices justo eget, sodales orci. Aliquam egestas libero ac turpis pharetra, in vehicula lacus scelerisque. Vestibulum ut sem laoreet, feugiat tellus at, hendrerit arcu..
Nunc lacus elit, faucibus ac laoreet sed, dapibus ac mi. Maecenas eu ante a elit tempus fermentum. Aliquam commodo tincidunt semper. Phasellus accumsan, justo ac mollis pharetra, ex dui pharetra nisl, a scelerisque ipsum nulla ac sem. Cras eu risus urna. Duis lorem sapien, congue eget nisl sit amet, rutrum faucibus elit.
Donec accumsan auctor iaculis. Sed suscipit arcu ligula, at egestas magna molestie a. Proin ac ex maximus, ultrices justo eget, sodales orci. Aliquam egestas libero ac turpis pharetra, in vehicula lacus scelerisque. Vestibulum ut sem laoreet, feugiat tellus at, hendrerit arcu.
Nunc lacus elit, faucibus ac laoreet sed, dapibus ac mi. Maecenas eu ante a elit tempus fermentum. Aliquam commodo tincidunt semper. Phasellus accumsan, justo ac mollis pharetra, ex dui pharetra nisl, a scelerisque ipsum nulla ac sem. Cras eu risus urna. Duis lorem sapien, congue eget nisl sit amet, rutrum faucibus elit.
