B&C DE1090TN – Flagship 4-Inch Titanium Compression Driver for Maximum Output and Ultra-Low Crossover Performance
The B&C DE1090TN represents the pinnacle of B&C’s large-format compression driver engineering. Designed around an enormous 100 mm (4-inch) aluminium voice coil, an advanced 1.9 Tesla neodymium motor, and a precision titanium diaphragm, the B&C DE1090TN delivers extraordinary power handling, exceptional efficiency, and remarkably low crossover capability for the most demanding professional audio applications.
Positioned at the very top of B&C’s 1.4-inch compression driver range, the DE1090TN has been engineered for system designers who require uncompromising performance in high-output touring systems, stadium sound reinforcement, arena installations, premium line arrays, and flagship point-source loudspeakers. With an impressive 120 W AES power rating, 240 W continuous program power handling, and the ability to operate from just 500 Hz, this driver is built to reproduce critical vocal and high-frequency content with authority, precision, and consistency.
One of the most remarkable aspects of the B&C DE1090TN is its exceptionally low recommended crossover frequency of 800 Hz. This capability allows loudspeaker designers to achieve smoother integration between low-frequency and high-frequency sections while maintaining superior pattern control through the vocal range. In many modern professional loudspeaker systems, lowering the crossover frequency can significantly improve coherence, intelligibility, and overall sonic performance.
The DE1090TN combines this low-frequency capability with a frequency response extending all the way to 20 kHz, delivering the detail, clarity, and extension required for modern high-resolution audio systems. Whether reproducing speech, vocals, orchestral material, live music, or high-energy concert content, the driver remains controlled and articulate across its entire operating range.
With a sensitivity rating of 108 dB, the B&C DE1090TN also provides exceptional efficiency, allowing sound systems to generate substantial output with reduced amplifier demand. The result is greater system headroom, improved dynamic performance, and enhanced long-term reliability under demanding operating conditions.
For manufacturers and professional audio engineers seeking the ultimate combination of power, efficiency, bandwidth, and crossover flexibility, the B&C DE1090TN stands as one of the most advanced compression drivers available in the professional loudspeaker industry.
Engineered Around a Massive 100 mm Voice Coil
The defining feature of the B&C DE1090TN is its enormous 100 mm (4-inch) aluminium voice coil.
This is one of the largest voice coils found in any professional compression driver and represents a significant advancement over smaller 44 mm, 65 mm, 75 mm, and even 86 mm designs.
A larger voice coil offers numerous performance advantages:
- Increased thermal capacity
- Improved heat dissipation
- Higher sustained power handling
- Greater reliability at high SPL levels
- Reduced thermal compression
- Enhanced low-frequency control
These benefits allow the DE1090TN to achieve:
- 120 W nominal power handling
- 240 W continuous program power handling
while maintaining excellent linearity and long-term reliability.
In large-scale professional sound reinforcement systems where compression drivers are often subjected to extended periods of high output, the thermal stability provided by the 100 mm voice coil becomes a major advantage.
This substantial voice coil also contributes directly to the driver’s ability to operate effectively at crossover points as low as 800 Hz.
Exceptional Low-Frequency Extension for a Compression Driver
One of the most significant strengths of the B&C DE1090TN is its ability to operate effectively far below the crossover points typically associated with compression drivers.
The driver delivers a frequency response extending down to 500 Hz, with a recommended crossover frequency of only 800 Hz.
This specification provides several important benefits:
Improved System Integration
Lower crossover points allow smoother integration between the compression driver and low-frequency transducers.
This creates:
- Better phase alignment
- Improved coherence
- More natural vocal reproduction
- Enhanced imaging
- Greater system consistency
Better Directivity Control
Maintaining pattern control through the vocal range is essential in professional sound reinforcement.
By crossing over at 800 Hz, system designers can achieve more consistent dispersion characteristics across the critical speech and vocal frequencies.
Reduced Midrange Colouration
Allowing the compression driver to reproduce more of the vocal spectrum often reduces the workload on low-frequency drivers, resulting in cleaner and more articulate midrange performance.
These advantages make the B&C DE1090TN particularly attractive for high-end touring and installation loudspeakers.
High-Energy 1.9 Tesla Neodymium Motor Structure
The B&C DE1090TN employs a powerful neodymium motor producing 1.9 Tesla of magnetic flux density.
A strong magnetic field is fundamental to achieving high efficiency and accurate diaphragm control.
Benefits of the powerful motor include:
- Increased sensitivity
- Faster transient response
- Greater dynamic accuracy
- Lower distortion
- Improved efficiency
- Better diaphragm control
The motor provides the force required to accurately control the large titanium diaphragm while maintaining excellent responsiveness across the entire frequency range.
Combined with the 100 mm voice coil, the motor enables the DE1090TN to deliver both substantial output and impressive detail.
The use of neodymium technology also allows B&C to achieve these performance levels while keeping overall weight remarkably low.
Despite its flagship specifications, the DE1090TN weighs only 1.9 kg, making it highly suitable for modern line array systems where weight reduction is critical.
Titanium Diaphragm Technology
The B&C DE1090TN features a precision-engineered titanium diaphragm designed to provide exceptional strength, rigidity, and dynamic performance.
Titanium remains one of the most widely used diaphragm materials in professional touring audio due to its ability to maintain structural integrity under extreme operating conditions.
Advantages of titanium diaphragms include:
- Outstanding stiffness-to-weight ratio
- High power handling capability
- Excellent transient response
- Superior projection
- Long-term durability
- Consistent performance at high SPL levels
These characteristics make titanium particularly effective in applications where sound must travel long distances while maintaining clarity and intelligibility.
The DE1090TN leverages these properties to deliver a highly articulate and energetic sound character that remains controlled even at elevated output levels.
For large venues, outdoor events, stadiums, and touring productions, this combination of power and precision is invaluable.
Outstanding Sensitivity and System Efficiency
The B&C DE1090TN achieves a sensitivity rating of 108 dB, placing it among the most efficient compression drivers in its class.
High sensitivity provides several key advantages:
- Higher acoustic output per watt
- Increased amplifier efficiency
- Greater dynamic headroom
- Reduced system stress
- Improved maximum SPL capability
In practical applications, this means the driver can achieve extremely high output levels without requiring excessive amplifier power.
For large-scale systems, improved efficiency contributes to reduced operating costs, lower amplifier requirements, and enhanced overall system performance.
The DE1090TN’s combination of high sensitivity and substantial power handling makes it particularly effective in high-output professional environments.
Extended Frequency Response to 20 kHz
While the DE1090TN excels in low-frequency extension, it also delivers outstanding high-frequency performance.
Its frequency response extends from 500 Hz to 20 kHz, allowing the driver to reproduce virtually the entire audible high-frequency spectrum.
This broad bandwidth provides:
- Excellent vocal articulation
- Detailed instrument reproduction
- Enhanced intelligibility
- Extended high-frequency detail
- Smooth integration with modern DSP systems
The ability to maintain performance across such a wide frequency range is a testament to the driver’s advanced diaphragm and motor design.
For professional audio applications requiring both power and precision, this wide operating range provides exceptional versatility.
Built for Demanding Professional Applications
The B&C DE1090TN has been developed specifically for high-performance sound reinforcement systems.
Ideal applications include:
- Large-scale touring systems
- Professional line arrays
- Stadium sound reinforcement
- Arena PA systems
- Festival sound systems
- Premium point-source loudspeakers
- Theatre installations
- Houses of worship
- Corporate AV systems
- Performing arts centres
- Concert venues
- High-output fixed installations
Its ability to deliver substantial output while maintaining excellent vocal clarity makes it particularly valuable in applications where intelligibility and projection are critical.
Compact Physical Design
Despite its massive internal components, the B&C DE1090TN remains remarkably compact.
Physical dimensions include:
- Overall diameter: 127 mm
- Depth: 54 mm
- Net weight: 1.9 kg
The driver utilizes:
- Four M6 mounting holes
- 102 mm bolt circle
- 90-degree spacing
The compact form factor simplifies integration into modern loudspeaker systems while preserving valuable internal cabinet space.
For line array designers and OEM manufacturers, the ability to achieve flagship performance within a compact footprint is a significant advantage.
Technical Specifications
B&C DE1090TN Technical Specifications
Throat Diameter: 36 mm (1.4 in)
Nominal Impedance: 8 Ω
Minimum Impedance: 8.3 Ω
Nominal Power Handling: 120 W
Continuous Power Handling: 240 W
Sensitivity: 108 dB
Frequency Range: 500 Hz – 20 kHz
Recommended Crossover Frequency: 800 Hz
Voice Coil Diameter: 100 mm (4 in)
Winding Material: Aluminium
Inductance: 0.18 mH
Flux Density: 1.9 T
Diaphragm Material: Titanium
Mounting Information
B&C DE1090TN Mounting Dimensions
Mounting Pattern: Four M6 mounting holes positioned 90° apart on a 102 mm (4 in) bolt circle
Overall Diameter: 127 mm (5 in)
Depth: 54 mm (2.13 in)
Net Weight: 1.9 kg (4.19 lb)
Shipping Weight: 1.95 kg (4.29 lb)
Shipping Box Dimensions: 140 x 135 x 62 mm (5.51 x 5.31 x 2.44 in)
Why Choose the B&C DE1090TN?
The B&C DE1090TN is one of the most capable large-format compression drivers available from B&C Speakers. Combining a massive 100 mm voice coil, 120 W AES power handling, 240 W program power capacity, 108 dB sensitivity, and an advanced 1.9 Tesla neodymium motor, it is designed for professional sound systems that demand exceptional output and reliability.
What truly sets the B&C DE1090TN apart is its ability to operate comfortably with an 800 Hz crossover frequency, allowing superior integration with low-frequency drivers while maintaining outstanding vocal reproduction and pattern control. Its titanium diaphragm delivers the projection and clarity required for large-scale professional sound reinforcement, while the extended response to 20 kHz ensures excellent detail and articulation across the entire audible spectrum.
For loudspeaker manufacturers, system integrators, touring companies, and professional audio engineers seeking a flagship compression driver capable of delivering uncompromising performance, the B&C DE1090TN stands as one of the most powerful and versatile solutions in the B&C professional audio lineup.
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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.
