B&C DH450H 1″ Professional High Frequency Compression Driver
The B&C DH450H is a compact professional 1-inch high frequency compression driver engineered for applications requiring exceptional sensitivity, extended operating bandwidth, and high output capability within lightweight loudspeaker systems. Designed specifically for professional sound reinforcement applications, portable PA products, stage monitoring systems, compact line arrays, and installed audio solutions, the B&C DH450H combines advanced HT Polymer diaphragm technology with a powerful magnetic motor structure to deliver reliable and articulate high-frequency reproduction.
Developed using B&C’s compact high-performance compression driver platform, the B&C DH450H has been optimized for applications where physical size, efficiency, and acoustic output must coexist without compromise. Its compact form factor allows integration into space-constrained loudspeaker designs while maintaining the performance standards required for professional environments.
At the core of the B&C DH450H is a 44 mm aluminium voice coil coupled to a lightweight HT Polymer diaphragm assembly, creating a driver optimized for fast transient response, reduced moving mass, and long-term thermal stability. Combined with a high-energy magnetic system producing 1.9 Tesla flux density, the driver achieves strong output capability while maintaining excellent control and clarity.
With a usable frequency range extending from 1 kHz to 18 kHz, extremely high sensitivity, and compact physical dimensions, the B&C DH450H provides loudspeaker designers with a professional compression driver solution capable of delivering consistent high-frequency performance across demanding applications.
Key Features
- 1-inch throat diameter
- 40 W nominal power handling
- 80 W continuous power handling
- 109 dB sensitivity
- 1 kHz – 18 kHz frequency response
- 44 mm (1.7 inch) aluminium voice coil
- HT Polymer diaphragm assembly
- High-efficiency compression driver architecture
- Powerful 1.9 T magnetic system
- Compact lightweight construction
- Optimized for compact professional loudspeaker systems
- Extended bandwidth performance
Compact Professional Compression Driver Design
The B&C DH450H has been engineered to provide professional high-frequency performance from a highly compact platform. Featuring a 25 mm (1 inch) throat diameter, the driver integrates with a wide variety of horns and waveguides used in modern sound reinforcement systems.
Its compact dimensions make the driver particularly suitable for portable loudspeaker systems, stage monitors, compact arrays, and installation products where space efficiency is important.
With an impressive 109 dB sensitivity, the driver produces high acoustic output with efficient amplifier utilization, reducing system power requirements while maintaining strong performance.
The compression driver architecture promotes efficient coupling between the diaphragm assembly and horn structure, improving acoustic loading and supporting controlled dispersion characteristics.
High-Energy Magnetic Circuit Technology
A major performance characteristic of the B&C DH450H is its high-energy magnetic system.
Generating 1.9 Tesla magnetic flux density, the magnetic assembly provides excellent control over diaphragm movement while contributing significantly to the driver’s high sensitivity and transient performance.
Strong magnetic force improves diaphragm acceleration and stopping control, helping preserve articulation and reducing distortion during demanding operation.
The powerful motor structure also contributes to stable operation across extended use periods while supporting accurate reproduction of complex musical material.
Combined with lightweight moving components, the magnetic circuit allows the driver to maintain consistent performance across the operating bandwidth.
HT Polymer Diaphragm Technology
The B&C DH450H utilizes an advanced HT Polymer diaphragm engineered to deliver reliable operation and smooth acoustic performance.
HT Polymer materials provide excellent thermal stability and mechanical consistency while maintaining the lightweight properties required for high-frequency reproduction.
The diaphragm contributes to detailed vocal reproduction, improved speech intelligibility, and controlled transient behaviour throughout the operating range.
Its lightweight construction allows the driver to reproduce upper harmonics efficiently while minimizing unwanted resonance behaviour.
The diaphragm design also enhances long-term reliability in professional sound reinforcement applications.
Large Diameter Voice Coil Design
At the center of the B&C DH450H is a 44 mm (1.7 inch) aluminium voice coil, designed to provide strong thermal performance and efficient operation.
The large diameter voice coil supports 40 W nominal power handling and 80 W continuous power handling, allowing the driver to perform effectively in demanding professional environments.
Aluminium winding material reduces moving mass while maintaining efficient thermal characteristics. This contributes to improved transient response and better reproduction of dynamic audio content.
The driver incorporates 0.16 mH inductance, helping maintain smooth response characteristics while supporting broad bandwidth performance.
The optimized voice coil assembly contributes significantly to the driver’s efficiency and reliability.
Extended Frequency Response Performance
The B&C DH450H provides an operating bandwidth extending from 1 kHz to 18 kHz, allowing broad coverage across professional sound reinforcement applications.
Its lower frequency capability provides additional flexibility when integrating the driver into compact two-way systems and larger multi-way loudspeaker designs.
B&C recommends a crossover frequency of 1 kHz, allowing designers greater freedom when developing compact high-output loudspeaker systems.
The wide operating bandwidth contributes to accurate vocal reproduction, strong speech intelligibility, and improved musical detail.
Professional System Integration
The compact design and lightweight construction of the B&C DH450H allow integration into numerous professional loudspeaker products.
Typical applications include:
- Compact two-way loudspeakers
- Portable PA systems
- Stage monitors
- Compact line arrays
- Installed sound systems
- Speech reinforcement systems
- Column loudspeaker systems
- Professional touring audio products
Its combination of small dimensions, high efficiency, and strong output capability provides significant flexibility for system designers.
Technical Specifications
Throat Diameter: 25 mm (1 in)
Nominal Impedance: 8 Ω
Minimum Impedance: 7.8 Ω
Nominal Power Handling: 40 W
Continuous Power Handling: 80 W
Sensitivity: 109 dB
Frequency Range: 1 kHz – 18 kHz
Recommended Crossover: 1 kHz
Voice Coil Diameter: 44 mm (1.7 in)
Winding Material: Aluminium
Inductance: 0.16 mH
Flux Density: 1.9 T
Diaphragm Material: HT Polymer
Design Features
Driver Type: High Frequency Compression Driver
Throat Diameter: 25 mm (1 in)
Voice Coil Diameter: 44 mm (1.7 in)
Diaphragm Material: HT Polymer
Winding Material: Aluminium
Magnetic Flux Density: 1.9 T
Recommended Crossover Frequency: 1 kHz
Mounting Information
Mounting Configuration: Two M5 holes 180° on 57 mm (2.24 in) diameter
Maximum Diameter Across Mounting Studs: 90 mm
Overall Diameter: 69 mm (2.72 in)
Depth: 65 mm (2.56 in)
Net Weight: 0.6 kg (1.32 lb)
Shipping Units: 1 Piece
Shipping Weight: 0.64 kg (1.41 lb)
Shipping Box: 120 × 120 × 65 mm
Applications
The B&C DH450H is engineered for professional audio systems requiring compact dimensions, high sensitivity, and reliable operation. Its HT Polymer diaphragm technology, powerful magnetic structure, and large diameter voice coil make it particularly suitable for portable PA systems, compact loudspeaker designs, stage monitors, installed sound products, and professional touring applications.
With excellent efficiency, broad frequency coverage, and professional-grade construction, the B&C DH450H provides loudspeaker designers with a compact compression driver solution capable of delivering clear, articulate, and reliable high-frequency performance. For applications where lightweight construction and professional acoustic performance are equally important, the B&C DH450H offers an effective and dependable solution.
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About B&C Speakers S.r.L.
B&C Speakers products are built in Bagno a Ripoli (Florence), Italy., ensuring high quality products to suite your speaker building requirements. Their 10,500 square meter facility incorporates highly sophisticated automation and quality control. Over the years they become one of the world leaders in the Professional Audio market, a brand recognized everywhere as a premium product that offers excellent value to the consumer.
