B&C Speakers 8CL51

A 20 cm B&C Designed for Compact and High-Performance Formats

The B&C 8CL51 belongs to the family of professional 20 cm loudspeakers designed to offer an excellent balance between compactness, sensitivity, and definition in the low-midrange. This "8-inch" format is a highly appreciated standard in sound reinforcement because it allows the creation of low-volume speakers while maintaining good attack and clear instrument articulation.

With its neodymium motor and performance-oriented design, this model targets projects where every liter and kilogram count: portable speakers, stage monitors, small full-range heads in multi-way setups, or custom systems for integration.

Who Is It For and What Are Its Uses?

This loudspeaker is aimed at manufacturers, integrators, technicians, and audio DIY enthusiasts seeking a reliable transducer to precisely work the low/midrange area. Its specified bandwidth of 70 Hz to 5000 Hz makes it suitable as a woofer/midbass in a two-way speaker (with a compression driver or tweeter) or as a mid-bass driver in a three-way configuration.

Thanks to its sensitivity and recommended enclosure, the B&C 8CL51 is particularly well-suited for tuned compact speakers capable of delivering a fast and punchy response: snare drum and toms in playback, guitar (in multi-way contexts), vocals with excellent low-midrange articulation, as well as instruments requiring "punch" without heaviness.

Design and Key Points: Sensitivity, Control, and Durability

Neodymium Motor: Power and Mobility

The neodymium magnet keeps the weight low while maintaining a powerful motor. The result is a loudspeaker easier to integrate into portable speakers, stage monitors, or suspended systems, while ensuring good dynamics and a lively response.

51 mm Voice Coil: Power Handling and Stability

The 51 mm (2-inch) copper wire voice coil is sized for sustained use. This design promotes good thermal management and appreciable stability when the system is driven at high levels, especially in the low-midrange where energy is significant.

Double Roll Surround: Greater Excursion Control

The LF double roll surround helps better control the cone movement, an essential factor to limit distortion and maintain clean bass. With a Xmax of 6.5 mm, the 8CL51 comfortably delivers a solid response in the lower spectrum, especially in a properly tuned enclosure.

Exponential Cone and Waterproof Treatment: Reliability in Real Conditions

The exponential cone, combined with a waterproof treatment on the front face, aims for good rigidity and more confident resistance to humidity and operational stresses. In a speaker used for gigs, rehearsals, or installations, this type of finish helps preserve consistent performance over time.

Recommended Enclosure: A Clear Guideline to Optimize the Speaker

B&C specifies a recommended enclosure volume of 17 liters with a tuning at 63 Hz. This guideline provides an effective basis for designing a compact and coherent speaker, aiming for a balance between bass extension and impact. In practice, the chosen tuning and volume strongly influence the sense of depth, low-frequency power handling, and the perceived "speed" of the low end.

Technical specifications