B&C FB354 – Passive Crossover for DCX354 Coaxial Compression Driver
The B&C FB354 is a premium passive crossover network designed specifically for the B&C DCX354 coaxial compression driver. This precision-engineered component ensures optimal integration between the low-frequency and high-frequency sections of the driver, delivering a coherent point-source output and balanced tonal reproduction. Built to meet the rigorous demands of professional audio applications, the FB354 provides clarity, accuracy, and protection, making it an indispensable tool for sound engineers, system integrators, and cabinet builders.
Purpose-Built for DCX354 Integration
The FB354 has been carefully designed to interface seamlessly with the B&C DCX354 coaxial compression driver. Coaxial drivers, by their very nature, require precise frequency alignment between the mid and high-frequency components to achieve coherent phase response and smooth dispersion. The FB354 ensures this by providing an accurately tuned crossover point and carefully selected component values.
This design guarantees that the DCX354 operates with a natural, flat frequency response, preserving the integrity of vocals, instruments, and complex musical content. The result is a high-fidelity, point-source output ideal for professional stage monitoring, portable PA systems, and installed sound systems where clarity and tonal balance are paramount.
Asymmetrical Slope Crossover at 5.6 kHz
One of the defining features of the FB354 is its asymmetrical slope crossover at 5.6 kHz. The low-pass section uses an 18 dB/octave slope, while the high-pass section employs a 12 dB/octave slope. This configuration allows a smooth transition between the low and high-frequency drivers, minimizing phase distortion and maintaining consistent sensitivity across the crossover point.
The asymmetrical design ensures that the midrange driver carries the appropriate portion of the frequency spectrum while the compression driver handles the high-frequency content without being overloaded. This creates a seamless, full-range listening experience and preserves the tonal integrity of the coaxial system.
Series Protection with Industrial Filament Bulbs
The FB354 incorporates industrial filament bulbs in series with the high-frequency path, acting as a safeguard against overpowering. These bulbs protect the compression driver by limiting excessive power, preventing thermal damage, and ensuring that the driver operates reliably even under high-output conditions.
This built-in protection mechanism enhances the longevity of the DCX354 driver, allowing sound engineers and system designers to push their systems to professional performance levels with confidence. It also ensures consistent tonal balance, even when subjected to high SPLs in demanding live sound or installed environments.
Compatibility with ME464 Horn
The FB354 is specifically engineered to complement the B&C ME464 horn. Together, the crossover and horn create a complete point-source solution that delivers flat frequency response, coherent phase alignment, and wide horizontal coverage. This makes it an ideal choice for professional applications requiring precise imaging and reliable audio reproduction.
System designers can rely on this combination for portable, permanent, and stage-based loudspeaker setups, knowing that the FB354 will provide predictable, high-fidelity performance across all operating conditions.
Technical Specifications
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Model: FB354
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Application: Passive crossover network for DCX354 coaxial compression driver
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Crossover Frequency: 5.6 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
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Dimensions: 100 x 110 mm (3.94 x 4.33 in)
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Weight: Approximately 0.37 kg (0.82 lb)
Professional Applications
The FB354 excels in a wide range of professional audio settings:
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Live Sound Reinforcement: Delivers clear, balanced audio in concerts and performance venues.
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Stage Monitors: Provides accurate and reliable sound for performers on stage.
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Permanent Installations: Suitable for venues requiring long-term, consistent high-fidelity output.
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Portable PA Systems: Ideal for road-ready systems where reliability and audio quality are critical.
Its combination of precise engineering and robust protection ensures that the FB354 is capable of handling the demands of professional audio while maintaining fidelity and driver safety.
Why It Matters
In coaxial loudspeaker systems, the crossover network is a critical component for achieving optimal performance. The FB354 ensures that the DCX354 coaxial driver functions correctly, maintaining balanced frequency response, minimal distortion, and precise phase alignment. High-quality components, an asymmetrical slope design, and built-in HF protection all contribute to its reliability and sonic accuracy.
By utilizing the FB354, system designers, integrators, and engineers can achieve a predictable, professional-grade performance without the need for additional DSP or complex tuning. This allows for fast, reliable system deployment while ensuring that coaxial loudspeakers operate at their full potential.
Conclusion
The B&C FB354 passive crossover is a meticulously engineered component that maximizes the performance of the DCX354 coaxial compression driver. With a carefully tuned asymmetrical crossover, integrated high-frequency protection, and compatibility with the ME464 horn, the FB354 delivers professional-grade performance, durability, and reliability.
Whether used in portable PA systems, stage monitors, or permanent installations, it guarantees coherent, high-fidelity sound reproduction, making it an essential element for any professional coaxial loudspeaker system.
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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.
