B&C FB464 – Precision Passive Crossover for DCX464 Coaxial Compression Driver
The B&C FB464 is a high-performance passive crossover network meticulously engineered to complement the B&C DCX464 coaxial compression driver. Designed to deliver optimal integration between the low-frequency and high-frequency components, this crossover ensures coherent point-source sound reproduction, preserving tonal balance and minimizing distortion across the frequency spectrum.
Purpose-Built for DCX464 Integration
The FB464 is specifically tailored to interface seamlessly with the B&C DCX464 coaxial compression driver. Coaxial drivers require precise frequency division to maintain phase coherence and consistent off-axis response. By providing an accurately tuned crossover point, the FB464 ensures that the low-frequency and high-frequency elements of the DCX464 operate in harmony, delivering a balanced and accurate sound reproduction.
This precise integration is essential for applications requiring high-fidelity audio performance, such as professional sound reinforcement, portable PA systems, and permanent installations.
Asymmetrical Slope Crossover Design
The FB464 employs an asymmetrical slope crossover design with a crossover frequency of 3.6 kHz. The low-pass section features an 18 dB/octave slope, while the high-pass section utilizes a 12 dB/octave slope. This configuration allows for a smooth transition between the low-frequency and high-frequency drivers, minimizing phase distortion and ensuring consistent sensitivity across the crossover point.
The 3.6 kHz crossover frequency is chosen to best balance the energy between the two diaphragms, minimizing distortion at all output levels. This design ensures that the midrange driver handles the appropriate bandwidth while the compression driver efficiently reproduces high-frequency content, resulting in a coherent and dynamic sound output.
Series Protection with Industrial Filament Bulbs
To safeguard the high-frequency compression driver from potential overloads, the FB464 incorporates industrial filament bulbs in series with the high-frequency path. These bulbs act as a protective mechanism, limiting excessive power that could damage the driver. By providing a gradual response to over-power conditions, the filament bulbs help maintain consistent tonal balance and prevent abrupt driver failures, enhancing the overall reliability and longevity of the system.
Compatibility with ME464 Horn
The FB464 is designed to work in conjunction with the B&C ME464 horn, creating a complete point-source solution. When paired, the crossover and horn deliver a flat frequency response, wide coverage, and precise imaging. This combination is ideal for both portable and fixed systems, ensuring consistent performance in any professional audio environment.
Its compatibility simplifies system design and installation, providing a reliable, plug-and-play solution that adheres to B&C’s high standards for performance and reliability.
High-Quality Component Construction
The FB464 features premium components throughout, including air-core inductors, high-grade polypropylene capacitors, and precision resistors. These components ensure minimal distortion, low power loss, and stable performance under high SPL conditions. The design allows the crossover to maintain consistent sonic performance during prolonged use, making it suitable for demanding live environments and professional sound reinforcement applications.
Every element of the FB464 is manufactured to strict quality standards, ensuring reliability, long-term performance, and superior sound reproduction.
Technical Specifications
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Model: FB464
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Application: Passive crossover network for DCX464 coaxial compression driver
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Crossover Frequency: 3.6 kHz
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Filter Type: Two-way passive network
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Slope: 18 dB/octave (low-pass), 12 dB/octave (high-pass)
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Protection: Series protection via industrial filament bulbs
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Compatible Horn: ME464
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Nominal Impedance: 8 Ω or 16 Ω (depending on model)
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Dimensions: 100 x 110 mm (3.94 x 4.33 in)
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Weight: 0.36 kg (0.79 lb)
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Shipping Weight: 0.39 kg (0.86 lb)
Professional Applications
The FB464 is suitable for a wide range of professional audio applications, including:
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Live Sound Reinforcement: Delivers clear, accurate audio for concerts and events.
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Stage Monitors: Provides reliable sound for performers on stage.
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Permanent Installations: Offers long-term, high-fidelity performance for fixed venues.
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Portable PA Systems: Ideal for road-ready systems requiring professional-grade sound.
Its robust design, precise engineering, and protective features ensure that the DCX464 coaxial driver delivers consistent performance under demanding conditions.
Why the FB464 Matters
In coaxial loudspeaker systems, accurate crossover design is critical for phase coherence, tonal balance, and driver protection. The FB464 meets these requirements with its asymmetrical slope design, HF protection, and high-quality components. By ensuring precise integration between low-frequency and high-frequency drivers, it enables professional coaxial systems to perform at their full potential, reducing the need for DSP or complex system tuning.
For sound engineers and system designers, the FB464 offers a reliable and predictable solution that simplifies installation while maximizing audio fidelity.
Conclusion
The B&C FB464 passive crossover network is an essential component for achieving high-fidelity performance with the DCX464 coaxial compression driver. With an asymmetrical slope design, integrated HF protection, and compatibility with the ME464 horn, it delivers professional-grade sound reproduction, reliability, and durability.
Whether for portable systems, stage monitors, or permanent installations, the FB464 ensures accurate, balanced, and coherent sound output, making it a must-have for professional coaxial loudspeaker applications.
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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.
