8CX21 – Compact Coaxial Transducer for Professional Sound Reinforcement

The 8CX21 from B&C Speakers is a high-performance 8-inch coaxial transducer designed for compact full-range systems where intelligibility and output are critical. It features an integrated high-frequency compression driver mounted coaxially with a precise low-frequency cone, delivering a true point-source sound field. This configuration is ideal for stage monitors, nearfield fills, compact FOH boxes, and portable PA enclosures that demand full-range clarity in a tight footprint.

Manufactured in Italy by a global leader in loudspeaker transducer engineering, the 8CX21 balances acoustic precision, mechanical durability, and installation flexibility for demanding professional audio applications.

Coaxial Design for Point-Source Accuracy

At the heart of the 8CX21 lies its coaxial architecture—a seamless integration of an 8-inch woofer with a 1.4-inch (36 mm) high-frequency compression driver. By aligning both sources on the same axis, the 8CX21 eliminates phase shift and alignment issues found in conventional two-way designs. This results in coherent imaging, tighter off-axis response, and smoother crossover behavior.

Such point-source output is especially useful for short-throw designs where spatial accuracy and minimal feedback are paramount—like under-balcony fills, wedge monitors, or ultra-portable mains.

Ferrite Motor with Solid Thermal Stability

The 8CX21 is built around a rugged ferrite magnet assembly, providing consistent magnetic performance and excellent heat dissipation under heavy use. The low-frequency driver handles 200W AES power, while the compression driver supports 25W AES, delivering reliable performance even in continuous operation.

This ferrite-based design ensures high output and robust reliability at a more cost-effective price point than neodymium alternatives—ideal for OEMs and system integrators balancing cost and performance.

Wide Bandwidth and Tunable Response

Engineered for versatility, the 8CX21 offers a usable frequency response from 75 Hz to 20 kHz, making it suitable for a wide range of full-range applications. The HF driver features an aluminum voice coil and polyester diaphragm dome for extended high-frequency response and controlled dispersion.

Its natural crossover point around 2.2 kHz enables simplified system design with either DSP or passive crossover integration. B&C also offers the FB08CX21 passive crossover as a factory-optimized solution.

Touring-Grade Build for Tight Spaces

From cone to coil, every component of the 8CX21 is purpose-built for performance in tight enclosures and portable systems. A weather-protected cone adds durability in high-humidity or outdoor setups, while its compact dimensions allow for easy front-loaded integration into slim cabinet profiles.

Whether you’re designing a portable wedge, a line array fill box, or a lightweight FOH speaker, the 8CX21 delivers pro-grade fidelity in a footprint that fits anywhere.

Specifications

• Nominal Diameter: 8 inches
• LF Voice Coil Diameter: 52 mm (2.0 in)
• HF Voice Coil Diameter: 36 mm (1.4 in)
• LF Power Handling (AES): 200W
• HF Power Handling (AES): 25W
• Frequency Response: 75 Hz – 20 kHz
• Crossover Frequency: 2.2 kHz
• LF Sensitivity: 94 dB (1W/1m)
• HF Sensitivity: 101 dB (1W/1m)
• Nominal Impedance: 8 ohms
• Magnet Type: Ferrite
• HF Diaphragm Material: Polyester
• Recommended Applications: Compact FOH, wedges, portable PA, fill speakers
• Made in: Italy

Conclusion

The 8CX21 is a smart, space-saving coaxial solution for professionals who need full-range performance in a compact form. With B&C’s proven transducer engineering, this driver delivers efficient power handling, wide bandwidth, and the accuracy of point-source sound—all in a rugged, install-friendly format. Whether you’re building portable PA, custom monitors, or fixed-installation boxes, the 8CX21 gets the job done with clarity and reliability.