Driver Unit and Trumpet Horn Price in Bangladesh (BD)

A Driver Unit is the "engine" of a high-power public address system. It is the core component that generates sound in a horn speaker setup, converting electrical signals into powerful acoustic waves. In Bangladesh, where long-distance sound projection is vital for religious centers, political rallies, large factories, and emergency announcements, the quality of a driver unit can make the difference between crystal-clear speech and distorted noise.

As of 2026, Driver Unit prices in Bangladesh for professional-grade, high-performance models like Bosch start from approximately 8,500 BDT. While basic units can be found at lower price points, the premium segment—featuring renowned brands like Bosch, Ahuja, and TOA—offers the durability and clarity required for high-stakes environments.

Driver Unit Price List in Bangladesh (Estimated 2026)

Note: Prices vary depending on the presence of a Line Matching Transformer (LMT) for 100V systems. For bulk project pricing, browse 

What is a Driver Unit?

A driver unit is a specialized transducer. Unlike a standard cone speaker found in a box, a driver unit uses a heavy-duty magnet and a thin diaphragm (usually made of phenolic resin or aluminum) to push air through a narrow throat into a horn flare. This design creates high Sound Pressure Levels (SPL), allowing the sound to travel much further than a traditional speaker.

Top Brand Profiles in Bangladesh

1. Bosch: The Premium Choice

Bosch driver units are engineered for safety and absolute clarity. Starting at 8,500 BDT, these units are often used in systems that require EN 54-24 certification for fire alarms and emergency evacuations.

• Why Bosch? They are virtually indestructible and offer the most natural voice reproduction, reducing the "nasal" sound often associated with horn speakers.

2. Ahuja: The Market Workhorse

Ahuja is the most popular brand in Bangladesh. Models like the AU-40 and AU-60 are ubiquitous in rural and urban mosques.

• Why Ahuja? They are designed specifically for the South Asian climate. They can handle high humidity and long hours of continuous use, and their spare parts (like diaphragms) are available in every district.

3. TOA: Japanese Precision

TOA driver units (TU-Series) are favored for their high efficiency. They are designed to deliver a high output even with lower power consumption.

• Why TOA? They are the gold standard for high-profile government buildings and international organizations in Bangladesh.

Wired Infrastructure: 16-Ohm vs. 100V LMT

When buying from PA System BD, you must choose the right type of driver unit for your wiring:

• Low Impedance (16 Ohm): These units do not have a transformer. They provide the most "punch" but are only suitable for short-distance wiring (less than 50 feet). They are commonly used in election rallies and mobile announcement vans.

• High Impedance (100V with LMT): These units (usually marked with 'T' or 'XT') have a built-in transformer. This allows the sound to travel over hundreds of meters of cable without losing volume. This is the only choice for mosque minarets and large factories.

Common Applications in Bangladesh

A. Religious Institutions (Mosques)

In Bangladesh, the most common use for a driver unit is on the minaret of a mosque for the Azan. A 50W or 60W Ahuja or Bosch driver unit paired with a large reflex horn ensures that the call to prayer reaches the entire neighborhood.

B. Industrial Paging (Garment Factories)

Garment factories use high-power driver units to make safety announcements and signal shift changes. Because of the high noise level of sewing machines, driver units are essential for their high-decibel output.

C. Public Rallies and Electioneering

During election season, driver units are mounted on rickshaws or poles across Bangladesh. Their high efficiency allows them to run off a small amplifier and a car battery for hours.

D. Emergency Evacuation Systems

High-end Bosch driver units are integrated into the "Voice Alarm" systems of skyscrapers and shopping malls to provide clear instructions during a fire or earthquake.

Key Technical Features to Consider

1. Diaphragm Material: Phenolic resin diaphragms are more durable for outdoor use, while aluminum diaphragms offer slightly better clarity for music.

2. Weatherproofing: Professional units like the Bosch LBB series are IP-rated, meaning they are protected against rain and dust—critical for the Bangladeshi monsoon season.

3. Frequency Response: Look for a unit that covers at least 200Hz to 7,000Hz. While they aren't meant for bass, they must cover the full range of the human voice.

4. Magnet Weight: A heavier magnet usually indicates a more powerful voice coil and better sustained performance under load.

Installation and Maintenance Tips

• Avoid Overloading: Never connect a 40W driver unit to an amplifier outputting 100W. This will "blow" the diaphragm instantly.

• Correct Polarity: Ensure the (+) and (-) terminals are connected correctly. If they are reversed, the sound will be "out of phase," resulting in low volume and poor quality.

• Diaphragm Replacement: Diaphragms are a "consumable" part. If your driver unit stops working, you don't always need to buy a new one. PA System BD offers replacement diaphragms that can be swapped out easily.

• Seal the Throat: When mounting a driver unit to a horn, ensure the connection is tight and waterproof. Water entering the driver unit is the #1 cause of failure in Bangladesh.

Why Shop from PA System BD Online Shop?

Investing in a driver unit is an investment in your organization's voice. PA System BD is the most trusted source in Bangladesh because:

• 100% Genuine Bosch & Ahuja: We strictly avoid counterfeit products. Every Bosch and Ahuja unit comes with original holographic seals and a verifiable serial number.

• Expert Technical Advice: Not sure if you need a 16-ohm or 100V unit? Our team of sound engineers will help you calculate your requirements for free.

• Professional Installation: We provide nationwide installation services, ensuring your driver units are mounted at the correct height and angle for maximum coverage.

• After-Sales Support: We stock replacement diaphragms and provide repair services, ensuring your system stays operational for years.

Conclusion

With prices starting from 8,500 BDT for premium models, driver units are the most critical part of an outdoor PA system. Whether you are upgrading your mosque's minaret or outfitting a massive industrial complex, choosing a high-quality driver unit from PA System BD Online Shop ensures that your message travels the distance with power and clarity.

Driver Unit Price in Bangladesh