B&C DE35 Professional High Frequency Tweeter – 108dB Sensitivity, 25W AES Power Handling, Polyester Diaphragm
The B&C DE35 is a professional high-frequency tweeter engineered for loudspeaker systems that demand exceptional clarity, outstanding efficiency, and long-term reliability. Designed by B&C Speakers, a globally respected manufacturer of professional transducers, the B&C DE35 delivers detailed high-frequency reproduction while maintaining the durability required for continuous operation in professional audio environments.
Featuring a 32 mm (1.25-inch) aluminium voice coil, a lightweight polyester diaphragm, and an impressive sensitivity rating of 108 dB, the B&C DE35 offers outstanding acoustic output from minimal amplifier power. Covering a frequency range of 3.5 kHz to 18 kHz, this compact high-frequency device is capable of reproducing the detail, articulation, and transient accuracy essential for professional loudspeaker systems.
Whether used in portable PA systems, installation loudspeakers, stage monitors, OEM speaker manufacturing, or custom audio projects, the B&C DE35 provides the performance and reliability that professional audio engineers expect from B&C products. Its combination of high efficiency, compact dimensions, and proven design makes it a practical solution for applications where clear and controlled high-frequency reproduction is a critical requirement.
The B&C DE35 is particularly well suited to systems where speech intelligibility, musical detail, and high-frequency extension are essential. By combining efficient motor technology with a durable diaphragm assembly, B&C has created a tweeter capable of delivering consistent performance across a wide range of professional sound reinforcement applications.
High-Efficiency Performance for Professional Audio Systems
One of the most impressive characteristics of the B&C DE35 is its exceptionally high efficiency.
With a sensitivity rating of 108 dB, the driver is capable of producing substantial acoustic output from relatively modest amplifier power. High sensitivity is one of the most desirable characteristics in professional loudspeaker design because it allows systems to achieve higher sound pressure levels while reducing amplifier demands.
This increased efficiency offers several practical benefits.
Amplifiers operate more comfortably, thermal stress is reduced, and system designers can achieve greater overall output without significantly increasing system power requirements.
For portable sound systems and installation projects, improved efficiency often translates directly into improved reliability and lower operating costs.
The B&C DE35 is capable of maintaining excellent clarity even at elevated output levels, helping systems retain intelligibility and detail when operating in demanding environments.
This efficiency also makes the driver an excellent choice for OEM manufacturers seeking to maximize system performance while maintaining compact enclosure designs and manageable amplifier requirements.
Extended Frequency Response and Exceptional Clarity
The B&C DE35 covers a frequency range extending from 3.5 kHz to 18 kHz.
This operating range allows the driver to reproduce critical upper-midrange and high-frequency content with excellent accuracy and detail.
High-frequency reproduction plays a significant role in how listeners perceive sound quality. The detail present in vocals, cymbals, acoustic instruments, and speech relies heavily on accurate reproduction of upper-frequency information.
The B&C DE35 is designed to preserve these details while maintaining a smooth and controlled response.
Speech becomes more intelligible, instruments retain their natural character, and music gains a greater sense of openness and definition.
For public address systems, this can dramatically improve audience comprehension.
For music reproduction, it allows systems to deliver greater realism and improved listening experiences.
The result is a driver capable of enhancing overall system performance across a wide variety of professional applications.
Lightweight Polyester Diaphragm Technology
The diaphragm is one of the most important components in any high-frequency transducer, and the B&C DE35 utilizes a carefully engineered polyester diaphragm to achieve its performance goals.
Polyester remains a highly respected diaphragm material due to its combination of durability, low mass, and smooth sonic characteristics.
Unlike some metallic diaphragm materials that can exhibit more aggressive tonal behaviour, polyester diaphragms are often valued for their controlled response and natural sound character.
This contributes to a smoother listening experience while maintaining excellent detail retrieval.
The lightweight nature of the diaphragm also allows the driver to respond quickly to signal changes.
Rapid acceleration and deceleration improve transient performance, allowing the driver to reproduce subtle musical details with greater precision.
This becomes particularly important when reproducing complex programme material containing vocals, percussion, and high-frequency instruments.
The polyester diaphragm used in the B&C DE35 helps create a balance between performance, reliability, and tonal smoothness that makes the driver suitable for both speech and music applications.
Precision Aluminium Voice Coil Design
At the heart of the B&C DE35 is a 32 mm aluminium voice coil designed to maximize efficiency and transient response.
Voice coil design has a direct influence on driver performance, affecting power handling, efficiency, and dynamic capability.
The use of aluminium winding material helps reduce moving mass while maintaining excellent electrical conductivity.
Lower moving mass allows the diaphragm to react more quickly to changes in the audio signal.
This improves detail reproduction and helps preserve the accuracy of high-frequency information.
The B&C DE35 is rated for 25 watts nominal power handling and 50 watts continuous power handling.
These ratings provide sufficient headroom for a wide variety of professional loudspeaker applications while maintaining the long-term reliability expected from a professional transducer.
The voice coil design also contributes to stable thermal performance during extended operation.
By minimizing thermal compression, the driver is able to maintain consistent performance even during demanding use.
Optimized Magnetic Motor Structure
The B&C DE35 incorporates a high-efficiency magnetic motor structure featuring a flux density of 1.3 Tesla.
Magnetic flux density is a critical factor in determining driver control, efficiency, and dynamic behaviour.
A strong magnetic field allows the voice coil to respond accurately to incoming audio signals while maintaining excellent control over diaphragm movement.
This improved control contributes directly to reduced distortion and improved transient response.
The motor structure works together with the lightweight diaphragm and aluminium voice coil to create a highly efficient system capable of producing excellent acoustic output while maintaining clarity across its operating range.
For professional loudspeaker designers, this translates into greater flexibility when creating systems that require both performance and reliability.
Reliable Integration into Professional Loudspeaker Designs
The B&C DE35 has been designed for straightforward integration into professional loudspeaker systems.
With a recommended crossover frequency of 5 kHz, the driver can be paired effectively with a wide variety of low-frequency and midrange transducers.
A properly selected crossover point helps ensure smooth frequency transition between drivers while maintaining consistent system response.
The driver’s 8-ohm nominal impedance also simplifies amplifier matching and crossover network design.
This makes the B&C DE35 particularly attractive to OEM manufacturers, custom loudspeaker builders, and system integrators seeking predictable and repeatable results.
Its stable operating characteristics help reduce development time while improving overall system consistency.
Applications for the B&C DE35
The versatility of the B&C DE35 allows it to perform effectively across numerous professional audio applications.
Portable PA Systems
Portable sound reinforcement systems require efficient components capable of delivering high output while remaining lightweight and reliable.
The B&C DE35 provides the efficiency and clarity necessary for portable loudspeaker designs where performance and portability must coexist.
Stage Monitors
Stage monitoring systems demand exceptional vocal intelligibility and high-frequency detail.
The B&C DE35 helps performers hear critical elements of their mix clearly and accurately.
Commercial Installations
Retail environments, conference facilities, houses of worship, hospitality venues, and educational institutions can benefit from the driver’s combination of clarity, efficiency, and long-term reliability.
Speech Reinforcement Systems
Speech intelligibility is critical in public address applications.
The controlled high-frequency response of the B&C DE35 helps improve vocal clarity and listener comprehension.
OEM Loudspeaker Manufacturing
Professional loudspeaker manufacturers value the driver’s predictable performance characteristics, compact size, and proven B&C engineering.
Custom Audio Projects
System designers and audio enthusiasts can integrate the B&C DE35 into a wide variety of custom loudspeaker projects requiring professional-grade high-frequency performance.
Compact Design and Installation Flexibility
The compact dimensions of the B&C DE35 make it easy to integrate into a wide range of enclosure designs.
With an overall diameter of 100 mm and a mounting depth of only 46 mm, the driver requires minimal installation space while delivering substantial acoustic performance.
Its lightweight construction further enhances design flexibility.
Weighing just 0.55 kg, the B&C DE35 is particularly attractive for portable loudspeaker systems where overall weight reduction remains a priority.
The compact footprint allows designers to optimize enclosure layouts while maintaining desired acoustic performance targets.
This flexibility makes the driver suitable for both new product development and system upgrades.
Why Choose the B&C DE35?
The B&C DE35 combines many of the characteristics professional audio engineers look for when selecting a high-frequency transducer.
Its high sensitivity allows for impressive output with minimal amplifier power.
The polyester diaphragm delivers smooth and controlled high-frequency reproduction.
The aluminium voice coil contributes to fast transient response and excellent efficiency.
Its compact dimensions simplify installation across numerous system designs.
Most importantly, the driver benefits from the engineering expertise and manufacturing quality that have made B&C Speakers one of the most respected names in professional audio.
For designers seeking a reliable and efficient high-frequency solution, the B&C DE35 offers an excellent balance of performance, durability, and value.
Technical Specifications
General Specifications
- Nominal Impedance: 8 Ω
- Minimum Impedance: 7 Ω
- Nominal Power Handling: 25 W
- Continuous Power Handling: 50 W
- Sensitivity: 108 dB
- Frequency Range: 3.5 kHz – 18 kHz
- Recommended Crossover Frequency: 5 kHz
Voice Coil and Diaphragm
- Voice Coil Diameter: 32 mm (1.25 in)
- Winding Material: Aluminium
- Diaphragm Material: Polyester
- Inductance: 0.1 mH
- Flux Density: 1.3 T
Mounting Information
- Overall Diameter: 100 mm (4 in)
- Depth: 46 mm (1.8 in)
- Net Weight: 0.55 kg (1.21 lb)
Shipping Information
- Shipping Weight: 0.58 kg (1.28 lb)
- Shipping Units: 1 Piece
- Shipping Box Dimensions: 105 x 105 x 65 mm (4.13 x 4.13 x 2.56 in)
Service Kit
- Replacement Diaphragm: MMD0358
Conclusion
The B&C DE35 is a highly efficient professional high-frequency tweeter designed to deliver clear, detailed, and reliable performance across a wide range of audio applications. Combining a 32 mm aluminium voice coil, polyester diaphragm technology, and an impressive sensitivity rating of 108 dB, the driver provides the output capability and clarity required for modern professional loudspeaker systems.
From portable PA systems and stage monitors to commercial installations and OEM loudspeaker manufacturing, the B&C DE35 offers the performance characteristics needed to achieve outstanding high-frequency reproduction. Its lightweight design, efficient motor structure, and proven B&C engineering ensure consistent results in demanding environments.
For audio professionals seeking a compact, reliable, and high-performing tweeter, the B&C DE35 remains an excellent choice. With its combination of efficiency, clarity, durability, and installation flexibility, the B&C DE35 continues to be a trusted solution for professional sound reinforcement and loudspeaker design applications worldwide.
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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.
