B&C 12CL76 High-Efficiency 12-Inch Neodymium Woofer for Vocal-Focused Professional Systems
The B&C 12CL76 is a high-sensitivity 12-inch neodymium woofer designed for professional audio systems that prioritise vocal clarity, midrange presence, and efficient output in compact enclosures. Positioned within B&C’s CL series, it is intended for two-way loudspeaker designs, portable PA systems, stage monitors, and installation applications where speech intelligibility and forward midband projection are more important than deep sub-bass extension.
With a 76 mm (3-inch) copper voice coil, neodymium inside-slug motor structure, and a lightweight moving assembly, the B&C 12CL76 delivers high output with low power requirements. Its design focuses on efficiency, controlled bandwidth, and thermal stability, making it a practical solution for compact systems that need consistent performance under demanding operating conditions.
High-Sensitivity Neodymium Motor System for Efficient Output
At the core of the B&C 12CL76 is a neodymium inside-slug motor structure engineered for high flux density and efficient energy conversion. With a flux density of approximately 1.05 T and a BL factor of 22.4 Tm, the motor provides strong electromagnetic control over cone movement, ensuring low distortion and accurate transient response.
The 76 mm copper voice coil is wound on a glass fibre former, combining thermal stability with mechanical rigidity. This allows the driver to handle 350 W AES and 700 W program power while maintaining consistent performance during extended operation. The ventilated voice coil gap design reduces power compression by improving airflow through the motor assembly, helping the driver sustain output in high-demand environments.
The neodymium motor architecture also contributes to a lighter overall design, improving cabinet efficiency and making the B&C 12CL76 well suited for portable systems where weight is a critical factor.
Wide-Band Response Optimised for Vocal Projection
The B&C 12CL76 is designed as a wide-band woofer with a frequency range of 45 Hz to 3 kHz, allowing it to cover a significant portion of the vocal spectrum. This extended upper bandwidth enables smooth integration with compression drivers and horns in two-way systems, typically crossing around the 1.2–2 kHz region depending on system design.
With a sensitivity of 98.5 dB, the driver produces high acoustic output from relatively low amplifier power, making it highly efficient in both portable and installed systems. This efficiency is particularly valuable in multi-box PA systems where amplifier channel count and power distribution are key design constraints.
The tonal character of the B&C 12CL76 is focused and forward in the midrange, supporting strong speech intelligibility and vocal projection in live sound environments. This makes it especially effective in applications such as small to medium PA systems, stage wedges, and vocal reinforcement cabinets.
Thiele-Small Behaviour and Enclosure Integration
The B&C 12CL76 is optimised for vented enclosure designs, with a Qts of 0.21 and an EBP of 218, indicating a strong preference for bass-reflex alignment. These parameters reflect a driver designed for efficiency and output rather than deep low-frequency extension.
With an Fs of 48 Hz and a Vas of approximately 59 litres, the driver performs well in compact enclosures around 40 litres tuned near 60 Hz. This alignment produces tight, controlled low-frequency response with emphasis on punch and midbass articulation rather than extended sub-bass.
The moving mass of 70 g supports controlled transient response while maintaining enough inertia for impactful midbass reproduction. Combined with the strong BL motor structure, the B&C 12CL76 delivers precise cone control across its operating range, reducing distortion at higher output levels.
Reliable Power Handling for Professional Applications
The B&C 12CL76 is rated at 350 W AES and 700 W program power handling, making it suitable for moderate-to-high output professional applications where efficiency and clarity are more important than extreme power capacity.
The ventilated motor structure and copper voice coil ensure stable thermal behaviour under continuous use, reducing the risk of power compression during extended operation. This makes the driver reliable in both portable and installed systems where consistent performance is required over long periods.
Its combination of high sensitivity, controlled bandwidth, and efficient motor design allows system builders to achieve strong output levels with relatively modest amplification, improving overall system efficiency.
Specifications
- Nominal Diameter: 320 mm (12″)
- Voice Coil Diameter: 76 mm (3″)
- Continuous Power Handling: 700 W
- Nominal Power Handling: 350 W AES
- Nominal Impedance: 8 Ω
- Minimum Impedance: 6.5 Ω
- Frequency Range: 45 Hz – 3000 Hz
- Sensitivity: 98.5 dB
- Resonance Frequency (Fs): 48 Hz
- Qes: 0.22
- Qms: 4.8
- Qts: 0.21
- Vas: 59 dm³
- BL Factor: 22.4 Tm
- Xmax: 6 mm
- Moving Mass (Mms): 70 g
- Effective Cone Area (Sd): 522 cm²
- Inductance (Le): 1.5 mH
- Recommended Enclosure Volume: 40 dm³
- Recommended Tuning Frequency: 60 Hz
- Net Weight: 3.35 kg
Conclusion
The B&C 12CL76 is a high-efficiency neodymium woofer designed for professional sound systems that require strong vocal projection, high sensitivity, and controlled midbass performance. Its 76 mm copper voice coil, lightweight motor assembly, and wide-band frequency response make it particularly well suited to compact two-way loudspeakers and portable PA systems. For designers seeking a reliable 12-inch driver optimised for clarity and efficiency rather than deep bass extension, the B&C 12CL76 delivers consistent performance in demanding professional audio 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.
