B&C Speakers DCX464

A Coaxial Driver Designed for Modern Horn Systems

The DCX464 fits within the logic of coaxial compression drivers intended for high-efficiency professional loudspeakers: combining two transducers (LF and HF) into a single unit to simplify the design of speaker heads while maintaining the precision and impact expected in sound reinforcement. This approach favors a more "unique" acoustic source compared to a classic combination of separate midrange speaker and tweeter, resulting in better tonal continuity and more consistent directivity when properly paired with a suitable horn.

Who Is the B&C Speakers DCX464 For?

This driver is aimed at integrators, loudspeaker manufacturers, contractors, and demanding DIY enthusiasts seeking a high-efficiency solution for sound reinforcement heads, powerful stage monitors, or horn systems optimized for projection. Thanks to its specified bandwidth from 300 Hz to 18 kHz, it is particularly suitable for configurations where the number of ways is to be limited, alignment constraints between transducers reduced, and very clear reproduction of vocals, brass, guitar, and percussion attack is desired.

In a coherent design (choice of horn, crossover, equalization), the DCX464 can help achieve a dynamic, precise, and stable listening experience even at high levels while maintaining excellent intelligibility.

Design, Crossover, and Key Integration Points

The DCX464 is a coaxial driver combining an LF section and an HF section, each with its own diaphragm. The LF section uses a 4-inch (100 mm) diaphragm made of HT polymer, while the HF section features a 2.5-inch (65 mm) diaphragm, also in HT polymer. This material choice aims for a smooth response and power handling suited to intensive use while maintaining a controlled sonic signature.

1.4-Inch Throat: A Professional Standard for Horn Selection

The 1.4-inch throat allows pairing with a wide range of diffusion horns used in sound reinforcement. The choice of horn (angle, length, profile) remains crucial for directivity, spectral balance, and presence perception. To get the best from the coaxial design, careful implementation is recommended, with a coherent horn and rigid mechanical mounting to avoid unwanted vibrations.

Recommended Crossover Frequency: 300 Hz

The manufacturer recommends a crossover frequency of 300 Hz with a slope of 12 dB/octave. This information serves as a basis for crossover design and driver protection in the low-frequency range. In practice, tuning (active or passive crossover, equalization, possible delays) will strongly depend on the horn, target SPL level, and enclosure (volume, possible load reinforcements, subwoofer supplementation). Precise calibration will preserve impact in the low-midrange while ensuring clarity and smoothness in the high frequencies.

Neodymium Magnet: Performance and Compactness

The neodymium magnet helps reduce size and weight while maintaining strong motor force. This is a tangible advantage for portable speakers, suspended systems, or any design where the performance-to-weight ratio is critical.

Technical specifications

Rackable	No	Type	Speakers
Category	sound reinforcement accessory

Model	B&C Speakers DCX464	HF Diaphragm	2.5 inch (65 mm) in HT polymer
Throat	1.4 inch	Recommended Crossover Frequency	300 Hz
LF Power	110 W AES	Recommended Slope	12 dB/octave
LF Impedance	8 ohms	Total Diameter	152 mm
HF Power	55 W AES	Total Height	78 mm
HF Impedance	8 ohms	Weight	3.7 kg
Sensitivity (1 W/1 m)	111.5 dB	Fixing	4 threaded M holes
Bandwidth	300 Hz to 18 kHz	Pitch Circle Diameter	102 mm
LF Diaphragm	4 inch (100 mm) in HT polymer