B&C FBCXN36 Dedicated Passive Crossover Network for Compact Coaxial Loudspeaker Systems
The B&C FBCXN36 is a purpose-engineered passive crossover network developed specifically for the B&C 4CXN36, 5CXN36, and 6CXN36 coaxial loudspeaker transducers. Designed to provide seamless integration between the low-frequency and high-frequency sections of these compact coaxial drivers, the B&C FBCXN36 delivers factory-optimised performance while simplifying loudspeaker design and assembly.
In professional loudspeaker development, the crossover network is one of the most critical components within the entire signal chain. It determines how efficiently the low-frequency and high-frequency sections operate together, influences phase alignment, affects vocal clarity, and plays a significant role in overall system reliability. The B&C FBCXN36 has been specifically engineered by B&C Speakers to ensure that the coaxial components within the 4CXN36, 5CXN36, and 6CXN36 operate as a cohesive acoustic source.
Unlike generic crossover networks that often require extensive testing, measurement, and optimisation, the B&C FBCXN36 provides a proven solution developed by the same engineering team responsible for the drivers themselves. This approach allows loudspeaker designers, OEM manufacturers, installers, and system integrators to achieve predictable performance with significantly reduced development time.
Featuring a 1 kHz crossover frequency, carefully selected 12 dB/octave low-pass filtering and 6 dB/octave high-pass filtering, and compatibility across multiple B&C compact coaxial platforms, the B&C FBCXN36 offers a highly practical solution for creating compact professional loudspeaker systems that deliver excellent intelligibility, balanced frequency response, and dependable long-term performance.
Whether used in compact stage monitors, portable PA systems, ceiling speakers, installation loudspeakers, conference systems, or custom coaxial projects, the B&C FBCXN36 provides the performance and reliability expected from one of the world’s most respected professional loudspeaker manufacturers.
Purpose-Built for B&C CXN Series Coaxial Drivers
The B&C FBCXN36 has been designed exclusively for use with three specific B&C coaxial transducers:
- B&C 4CXN36
- B&C 5CXN36
- B&C 6CXN36
Each of these drivers combines a low-frequency transducer with a centrally mounted high-frequency compression driver, creating a compact point-source loudspeaker solution.
The primary objective of the crossover network is to ensure that both sections operate together seamlessly while preserving the inherent benefits of coaxial loudspeaker technology.
Because the B&C FBCXN36 was developed specifically for these transducers, it provides several important advantages:
Optimised Frequency Integration
The crossover point has been selected to ensure smooth handover between low and high-frequency sections.
Consistent Acoustic Performance
Factory-developed crossover parameters provide predictable system behaviour.
Reduced Development Time
Loudspeaker designers can avoid extensive crossover design and tuning work.
Improved Reliability
Drivers operate within their intended frequency ranges, helping to maintain long-term performance.
Professional Sound Quality
The crossover contributes to balanced frequency response and improved vocal intelligibility.
This dedicated design approach allows system builders to achieve professional results while maintaining design efficiency.
1 kHz Crossover Frequency for Seamless Transition
At the core of the B&C FBCXN36 is a crossover frequency of:
1 kHz
The crossover frequency represents the point where audio signals are divided between the low-frequency and high-frequency sections of the coaxial driver.
Selecting the correct crossover frequency is essential to achieving smooth driver integration and balanced system performance.
The 1 kHz crossover point offers several important benefits:
Excellent Speech Reproduction
Many critical vocal frequencies occur near the crossover region, making smooth integration especially important.
Improved Driver Efficiency
Each section reproduces frequencies within its intended operating range.
Better Acoustic Summation
The crossover promotes a more natural blend between driver sections.
Enhanced Tonal Balance
A carefully selected crossover frequency helps maintain a consistent overall sound signature.
Greater System Accuracy
The transition between drivers remains controlled and predictable.
For professional audio applications where clarity and intelligibility are priorities, proper crossover design is essential, and the B&C FBCXN36 has been engineered specifically to deliver those results.
Dedicated Low-Pass and High-Pass Network Design
One of the defining characteristics of the B&C FBCXN36 is its dedicated filter configuration.
The crossover incorporates:
8 Ω Low-Pass Section
The low-frequency network is designed for the woofer section of the coaxial transducer and operates with an 8-ohm impedance.
This section directs low and midrange frequencies to the low-frequency driver while preventing excessive high-frequency content from reaching the cone assembly.
Benefits include:
- Improved low-frequency efficiency
- Reduced cone breakup effects
- Cleaner midrange reproduction
- Better driver control
- Improved overall system balance
16 Ω High-Pass Section
The high-frequency network is specifically configured for the compression driver section and operates with a 16-ohm impedance.
This section directs appropriate frequencies to the high-frequency diaphragm while protecting it from excessive low-frequency energy.
Advantages include:
- Improved high-frequency clarity
- Increased driver protection
- Reduced distortion
- Better long-term reliability
- Enhanced overall efficiency
The combination of dedicated low-pass and high-pass sections allows the B&C FBCXN36 to optimise performance across the entire frequency spectrum.
Carefully Engineered Filter Slopes
The B&C FBCXN36 utilises asymmetric filter slopes:
- 12 dB/octave low-pass
- 6 dB/octave high-pass
These filter characteristics have been selected specifically for the acoustic behaviour of the compatible CXN series coaxial drivers.
Filter slopes influence how rapidly frequencies are attenuated beyond the crossover point.
The chosen design provides several benefits:
Smooth Acoustic Summation
The driver sections combine naturally through the crossover region.
Balanced Frequency Response
The transition between drivers remains controlled and predictable.
Improved Phase Relationship
Proper filter design helps maintain coherence across the operating range.
Enhanced Vocal Intelligibility
Speech frequencies remain clear and well-defined.
Reduced Complexity
The crossover network remains efficient while delivering excellent performance.
The result is a crossover solution that supports the natural acoustic characteristics of the coaxial driver while maintaining excellent clarity and consistency.
Preserving Point-Source Coaxial Performance
Coaxial loudspeaker systems are widely valued for their ability to behave as a single acoustic source.
Because both low-frequency and high-frequency sections share the same acoustic axis, listeners experience more consistent performance throughout the coverage area.
The B&C FBCXN36 has been developed specifically to preserve these advantages.
Consistent Dispersion
The crossover helps maintain smooth coverage patterns across the listening area.
Improved Imaging
Point-source behaviour supports accurate spatial reproduction.
Better Phase Coherence
The acoustic relationship between driver sections remains well controlled.
Uniform Listening Experience
Listeners hear a more consistent tonal balance across the coverage area.
Enhanced Monitor Applications
Coaxial loudspeakers excel in stage monitor environments where even coverage is critical.
These advantages make the B&C FBCXN36 an excellent choice for professional compact loudspeaker systems.
Compact Design for Easy Integration
The B&C FBCXN36 has been designed to integrate easily into compact loudspeaker enclosures.
Overall Dimensions
100 x 76 mm (3.94 x 2.99 inches)
Its compact footprint allows installation within small cabinets while minimising the impact on internal enclosure volume.
This makes the crossover particularly attractive for:
- Compact stage monitors
- Installation loudspeakers
- Portable PA systems
- Ceiling speakers
- Column speakers
- OEM loudspeaker manufacturing
- Custom loudspeaker projects
The efficient layout simplifies enclosure design while maintaining professional crossover performance.
Ideal Applications for the B&C FBCXN36
The B&C FBCXN36 is suitable for a wide range of professional and commercial loudspeaker applications.
Typical applications include:
Compact Coaxial PA Loudspeakers
Portable systems benefit from the coherent response provided by coaxial technology.
Stage Monitoring
Consistent coverage and excellent vocal clarity improve performer monitoring.
Fixed Installations
Reliable passive operation simplifies installation and long-term maintenance.
Conference Systems
Speech intelligibility remains a priority in corporate environments.
Houses of Worship
Clear and natural vocal reproduction supports spoken-word applications.
Educational Facilities
Lecture halls and classrooms benefit from even coverage and intelligibility.
Commercial Audio Systems
Retail, hospitality, and public venue systems require dependable performance and consistent sound quality.
OEM Loudspeaker Manufacturing
Manufacturers can implement a factory-developed crossover solution with confidence.
Reliable Passive Operation
The passive design of the B&C FBCXN36 offers several practical advantages compared with more complex active crossover configurations.
Benefits include:
- No external power requirements
- Simplified loudspeaker wiring
- Reduced system complexity
- Lower installation costs
- Increased reliability
- Minimal maintenance requirements
- Straightforward implementation
For compact coaxial loudspeaker systems, passive crossover networks often provide the ideal balance between performance, simplicity, and reliability.
Professional B&C Engineering
B&C Speakers has established a worldwide reputation for designing and manufacturing professional loudspeaker components that meet the demands of touring, installation, and OEM markets.
The B&C FBCXN36 reflects this same engineering philosophy by providing:
- Dedicated driver integration
- Factory-optimised crossover design
- Reliable passive operation
- Consistent performance
- Professional-grade construction
- Long-term durability
By using a crossover network specifically developed for the intended transducers, designers can achieve the performance targets envisioned by the manufacturer.
Technical Specifications
B&C FBCXN36 Technical Specifications
Nominal Impedance: 8 Ω
Crossover Frequency: 1 kHz
Filter Type: Two-Way Passive Crossover
Low-Pass Section: 8 Ω
High-Pass Section: 16 Ω
Filter Slopes: 12 dB/octave – 6 dB/octave
Overall Dimensions: 100 x 76 mm (3.94 x 2.99 in)
Compatible Drivers
Designed For
B&C 4CXN36 – 8 Ω
B&C 5CXN36 – 8 Ω
B&C 6CXN36 – 8 Ω
The crossover has been specifically engineered for use with these B&C coaxial transducers.
Mounting and Shipping Information
Physical Specifications
Net Weight: 0.22 kg (0.49 lb)
Shipping Weight: 0.25 kg (0.54 lb)
Shipping Units: 1 Piece
Shipping Box Dimensions: 120 x 125 x 35 mm (4.72 x 4.92 x 1.38 in)
Why Choose the B&C FBCXN36?
The B&C FBCXN36 is a dedicated passive crossover network developed specifically for the B&C 4CXN36, 5CXN36, and 6CXN36 coaxial loudspeaker drivers. Featuring a 1 kHz crossover frequency, dedicated 8-ohm low-pass and 16-ohm high-pass sections, carefully engineered 12 dB/octave and 6 dB/octave filter slopes, and compact installation dimensions, it provides a factory-optimised solution for professional coaxial loudspeaker design.
For loudspeaker manufacturers, OEM builders, system integrators, and audio professionals seeking predictable performance, excellent intelligibility, and seamless coaxial driver integration, the B&C FBCXN36 delivers the reliability, acoustic consistency, and professional sound quality expected from B&C Speakers.
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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.
