B&C DE785TN – HF Driver

Surgesound B&C Speakers South Africa


3″ Voice Coil High Frequency Compression Driver


 

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B&C DE785TN – Compact High-Output 2-Inch Titanium Compression Driver for Touring, Installation and Professional Loudspeaker Systems

The B&C DE785TN is a high-performance 2-inch compression driver engineered to deliver exceptional output, wide frequency response, and outstanding reliability in a remarkably compact and lightweight format. Designed for professional loudspeaker manufacturers, system integrators, and audio engineers who require premium high-frequency reproduction without the size and weight penalties associated with traditional large-format compression drivers, the B&C DE785TN combines advanced neodymium motor technology, a precision titanium diaphragm, and a powerful 75 mm (3-inch) aluminium voice coil to achieve world-class performance across a broad range of professional applications.

Built to B&C Speakers’ renowned engineering standards, the B&C DE785TN offers an impressive combination of 110 W AES power handling, 220 W continuous programme power capacity, and 107.5 dB sensitivity, enabling it to generate substantial sound pressure levels while maintaining exceptional clarity and low distortion. Its extended operating bandwidth of 500 Hz to 18 kHz makes it suitable for a wide variety of high-performance loudspeaker designs, from premium point-source systems and horn-loaded enclosures to large-scale installation loudspeakers and touring sound reinforcement systems.

A defining characteristic of the B&C DE785TN is its ability to provide the performance typically associated with larger and heavier compression drivers while utilising a significantly more compact motor structure. With a net weight of just 1.75 kg, the DE785TN delivers exceptional power-to-weight performance, making it particularly attractive for modern loudspeaker systems where weight reduction, installation flexibility, and transportation efficiency are increasingly important.

The driver’s powerful 1.95 Tesla neodymium motor assembly provides exceptional magnetic control, improving efficiency, transient accuracy, and overall sonic precision. Combined with a high-strength titanium diaphragm, the DE785TN is capable of reproducing vocals, instruments, and complex programme material with outstanding detail, articulation, and dynamic realism.

Whether used in touring systems, fixed installations, theatre sound reinforcement, houses of worship, stadium audio systems, or premium professional loudspeakers, the B&C DE785TN delivers the reliability, efficiency, and acoustic performance demanded by the most discerning audio professionals.


Engineered for Modern Professional Audio Systems

The requirements of contemporary professional loudspeaker systems continue to evolve. Designers increasingly seek components capable of delivering:

  • High acoustic output
  • Excellent speech intelligibility
  • Reduced system weight
  • Improved efficiency
  • Extended frequency response
  • Lower crossover capability
  • Reliable long-term operation

The B&C DE785TN has been specifically developed to meet these requirements.

Its advanced design allows loudspeaker manufacturers to create systems that achieve exceptional performance while maintaining manageable weight and installation requirements.

For applications where portability and output capability must coexist, the DE785TN offers a compelling solution that bridges the gap between traditional large-format compression drivers and modern lightweight loudspeaker designs.


Powerful 75 mm Voice Coil for Exceptional Thermal Management

At the centre of the B&C DE785TN is a substantial 75 mm (3-inch) aluminium voice coil, one of the most important components contributing to the driver’s performance.

A large voice coil offers several significant advantages:

Increased Power Handling

The larger winding area can safely manage greater electrical input.

Enhanced Thermal Stability

Heat generated during operation is distributed more effectively.

Reduced Thermal Compression

Output levels remain more consistent during prolonged use.

Improved Reliability

Lower operating temperatures contribute to longer component life.

Greater Dynamic Capability

The driver can reproduce demanding programme peaks with confidence.

The DE785TN achieves:

  • 110 W nominal power handling
  • 220 W continuous programme power handling

These ratings make it highly suitable for demanding professional environments where sustained output and reliability are essential.

Whether used in a touring PA system operating at high levels for hours or in a permanently installed venue with continuous daily operation, the DE785TN is designed to maintain consistent performance.


Advanced Neodymium Motor Structure

One of the standout features of the B&C DE785TN is its high-performance neodymium motor assembly.

Generating an impressive 1.95 Tesla flux density, the motor structure delivers exceptional efficiency and diaphragm control.

The benefits include:

Higher Efficiency

Greater acoustic output is achieved from available amplifier power.

Superior Transient Response

The diaphragm reacts quickly and accurately to signal changes.

Improved Dynamic Accuracy

Musical peaks and transient events are reproduced with precision.

Enhanced Driver Control

The diaphragm remains stable even during high-output operation.

Lower Distortion

Greater magnetic control contributes to cleaner sound reproduction.

The use of neodymium technology also enables the compact form factor that distinguishes the DE785TN from many traditional large-format compression drivers.

This allows loudspeaker designers to reduce system weight without sacrificing performance.


Premium Titanium Diaphragm Technology

The B&C DE785TN utilises a precision titanium diaphragm designed for professional sound reinforcement applications.

Titanium remains one of the most respected diaphragm materials in professional audio due to its excellent combination of:

  • High stiffness
  • Low mass
  • Outstanding durability
  • Excellent fatigue resistance
  • Superior transient performance
  • Long-term consistency

These characteristics enable the diaphragm to reproduce programme material with exceptional accuracy and reliability.

The result is:

  • Clear vocal reproduction
  • Detailed musical presentation
  • Excellent transient definition
  • Consistent performance at high SPL levels
  • Low distortion across the operating range

For applications where sonic accuracy and reliability are equally important, titanium remains an ideal diaphragm material.


Wide Frequency Response for Versatile System Design

The B&C DE785TN offers a broad operating range extending from:

500 Hz to 18 kHz

This exceptionally wide bandwidth provides significant advantages for loudspeaker system designers.

Benefits include:

  • Lower crossover frequencies
  • Improved vocal integration
  • Enhanced phase consistency
  • Reduced crossover complexity
  • Greater design flexibility
  • Smoother overall frequency response

The ability to reproduce frequencies as low as 500 Hz allows the DE785TN to cover a substantial portion of the critical vocal spectrum.

This capability contributes to improved speech intelligibility and more natural musical reproduction.

In professional sound reinforcement systems, maintaining consistency through the vocal range is often one of the most important design objectives, and the DE785TN is exceptionally well suited to this task.


Optimised for Low Crossover Frequencies

The B&C DE785TN features a recommended crossover point of:

1 kHz

This low crossover capability creates several important benefits.

Improved Vocal Coherence

The driver can reproduce a larger portion of the vocal range.

Better Phase Alignment

Integration with low-frequency sections becomes easier.

Enhanced Directivity Matching

Coverage transitions between drivers are improved.

Reduced Crossover Complexity

System designers gain greater flexibility in network design.

These advantages help create loudspeaker systems that sound more natural and consistent across their operating range.


Exceptional Sensitivity and Acoustic Efficiency

The B&C DE785TN delivers an impressive sensitivity rating of:

107.5 dB

High sensitivity remains one of the most important characteristics of professional compression drivers.

Benefits include:

Increased Sound Pressure Output

Higher SPL levels can be achieved using less amplifier power.

Improved System Headroom

Additional output remains available for demanding programme peaks.

Reduced Amplifier Requirements

Amplifiers operate more efficiently and under less stress.

Better Overall System Efficiency

The loudspeaker system delivers more output per watt.

Enhanced Reliability

Reduced power demands contribute to lower thermal stress.

This efficiency makes the DE785TN particularly attractive for large-scale sound reinforcement systems where maximum output and reliability are critical.


Low Inductance for Superior High-Frequency Detail

The B&C DE785TN features an inductance value of:

0.17 mH

Low inductance contributes to improved driver performance by supporting:

  • Better transient accuracy
  • Improved phase response
  • Greater high-frequency extension
  • More precise crossover integration
  • Enhanced detail retrieval

These characteristics help preserve the accuracy and articulation required for professional sound reinforcement.

The result is a highly detailed and natural listening experience that remains consistent across a wide range of programme material.


Compact Design with Outstanding Performance-to-Weight Ratio

A major advantage of the B&C DE785TN is its ability to deliver large-format compression driver performance within a compact package.

Physical specifications include:

  • Overall diameter: 112 mm
  • Depth: 77 mm
  • Net weight: 1.75 kg

Compared with many traditional large-format compression drivers, the DE785TN offers substantial reductions in size and weight.

This makes it particularly valuable for:

  • Portable sound systems
  • Touring loudspeakers
  • Flyable arrays
  • Compact point-source systems
  • Weight-sensitive installations
  • Mobile production systems

The combination of lightweight construction and professional-grade performance allows system designers to create highly capable loudspeakers without unnecessary mass.


Ideal Applications

The B&C DE785TN is suitable for numerous professional audio applications, including:

  • Touring sound reinforcement systems
  • Stadium and arena PA systems
  • Professional line arrays
  • Point-source loudspeakers
  • Theatre sound systems
  • Houses of worship
  • Corporate AV installations
  • Concert venues
  • Performing arts centres
  • Nightclubs
  • Fixed installation loudspeaker systems
  • Portable professional audio systems

Its combination of power handling, efficiency, and compact design makes it one of the most versatile large-format compression drivers in the B&C range.


Rugged Professional Construction

Like all professional B&C components, the DE785TN is designed for long-term reliability.

Installation features include:

  • Four M5 mounting holes
  • 102 mm bolt circle
  • Industry-standard compatibility
  • Precision manufacturing tolerances
  • Durable mechanical construction

These features allow straightforward integration into both new and existing loudspeaker designs.


Technical Specifications

B&C DE785TN Technical Specifications

Throat Diameter: 50 mm (2 in)

Nominal Impedance: 8 Ω

Minimum Impedance: 8.3 Ω

Nominal Power Handling: 110 W

Continuous Power Handling: 220 W

Sensitivity: 107.5 dB

Frequency Range: 500 Hz – 18 kHz

Recommended Crossover Frequency: 1 kHz

Voice Coil Diameter: 75 mm (3 in)

Winding Material: Aluminium

Inductance: 0.17 mH

Flux Density: 1.95 T

Diaphragm Material: Titanium


Mounting Information

B&C DE785TN Dimensions and Installation Data

Mounting Pattern: Four M5 holes positioned 90° apart on a 102 mm (4 in) bolt circle

Overall Diameter: 112 mm (4.41 in)

Depth: 77 mm (3.03 in)

Net Weight: 1.75 kg (3.86 lb)

Shipping Weight: 1.82 kg (4.01 lb)

Shipping Box Dimensions: 135 x 135 x 93 mm (5.31 x 5.31 x 3.66 in)


Why Choose the B&C DE785TN?

The B&C DE785TN combines the output capability of a large-format compression driver with the weight savings and installation flexibility of a modern neodymium design. Featuring a 75 mm aluminium voice coil, powerful 1.95 Tesla neodymium motor, and precision titanium diaphragm, it delivers outstanding efficiency, reliability, and sonic performance for professional loudspeaker systems.

With 110 W AES power handling, 220 W programme power capacity, 107.5 dB sensitivity, and a wide 500 Hz to 18 kHz frequency response, the B&C DE785TN offers exceptional versatility across touring, installation, and professional sound reinforcement applications.

For loudspeaker manufacturers, rental companies, consultants, and professional audio engineers seeking a premium 2-inch titanium compression driver, the B&C DE785TN provides the power, clarity, efficiency, and long-term reliability that have made B&C Speakers a benchmark in professional audio transducer design worldwide.


B&C DE785TN

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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.


  • 220 W continuous program power capacity
  • 2″ horn throat diameter
  • 75 mm (3 in) aluminum voice coil
  • Titanium diaphragm
  • 500 – 18000 Hz response
  • 107.5 dB sensitivity
  • Neodymium magnet assembly with shorting copper cap

 

Throat Diameter:

50 mm (2 in)

Voice Coil Diameter:

75 mm (3 in)

Diaphragm Material:

Titanium

Winding Material:

Aluminium

Continuous Power Handling:

220 W

Nominal Power Handling:

110 W

Nominal Impedance:

8 Ω

Minimum Impedance:

8.3 Ω

Frequency Range:

0.5 kHz – 18 kHz

Recommended Crossover:

1 kHz

Sensitivity:

107.5 dB

Net Weight:

1.75 kg


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