B&C 12CXN76 – Improve Your 12″ Coaxial Build with Lightweight Neodymium Efficiency

If you want a 12-inch coaxial that gives you wide coverage, smooth highs, and ultra-light weight at a price point that makes sense for your build, the B&C 12CXN76 is the driver to start with. At just 5.1 kg, it’s the lightest 12-inch coaxial in B&C’s lineup — and one of the lightest full-range coaxials you’ll find anywhere.

The B&C 12CXN76 gives you 700 W continuous power handling, 99 dB sensitivity, and 80-degree coverage from a compact neodymium platform. It shares the same ultra-efficient motor characteristics as the 12HCX76 — the same 4.1% reference efficiency, the same 47 g moving mass, the same copper voice coil — but with wider dispersion and a polyester/titanium HF diaphragm that smooths out the high frequencies.

For builders designing compact PA tops, full-range monitors, or installed sound speakers where even coverage matters more than tight directional control, the B&C 12CXN76 is a proven, efficient foundation for your project.

Design and Construction of the B&C 12CXN76

The low-frequency section of the B&C 12CXN76 features a 76 mm (3-inch) copper voice coil on a glass fibre former. Copper winding is a deliberate choice — it provides noticeably better thermal conductivity than the aluminium coils found in the larger CXN88 models. Your driver dissipates heat more effectively, which means less power compression during sustained high-volume use.

The 47 g moving mass is exceptionally low, giving the B&C 12CXN76 fast, responsive transient behaviour that you’ll hear immediately. Kick drums hit with snap, vocals stay crisp and articulate, and percussion has the kind of immediate attack that heavier cones struggle to reproduce. This is a driver that simply sounds quick and alive.

The waterproof-treated paper cone protects against moisture damage, making the driver reliable for outdoor gigs, festival builds, and humid venue environments. An aluminium demodulating ring in the motor structure keeps distortion low through the midrange, which is especially important in a coaxial where the woofer handles everything from deep bass through to the 1.2 kHz crossover point.

The high-frequency section uses a 75 mm (3-inch) aluminium voice coil paired with a polyester/titanium composite diaphragm. This hybrid material is a real advantage for builders who want smooth, forgiving highs without the brightness that pure titanium can sometimes produce at high SPL.

The polyester layer adds internal damping that controls breakup modes, so you get extended high-frequency response with a more natural, less fatiguing character. At 105 dB HF sensitivity with 1.9 T flux density at the gap, the compression driver still has plenty of output and projection — it just delivers it with a smoother tonal character.

The single neodymium ring magnet powers both LF and HF sections, keeping the total weight to a featherweight 5.1 kg. That makes the B&C 12CXN76 an exceptional choice for builds where every gram counts — portable rigs, flown cabinets, and any project where you need to keep your enclosure as light as possible.

Performance and Applications for the B&C 12CXN76

The B&C 12CXN76 handles 700 W continuous on the LF section and 160 W on the HF, providing reliable headroom for professional use. The 4.1% reference efficiency means you’ll get serious volume from modest amplification — this driver makes the most of every watt you feed it.

The Thiele–Small parameters are identical to the 12HCX76, confirming they share the same LF motor platform. A Qts of 0.19 and EBP of 210 Hz point firmly toward vented enclosure designs. The 120-litre Vas gives you flexibility in cabinet tuning, while the 17.6 Tm Bl factor ensures tight motor control over the ultra-light cone.

Where the B&C 12CXN76 differs from its horn-loaded sibling is in coverage. The 80-degree dispersion angle fills a wider area evenly, making it the better choice for applications where you want broad, consistent coverage rather than focused throw. This wider pattern also makes crossover-point transitions smoother in multi-cabinet arrays.

Builders commonly choose the B&C 12CXN76 for:

• Ultra-lightweight compact PA tops and powered speakers
• Wide-coverage coaxial stage monitors for rehearsal and live use
• Installed sound in churches, conference rooms, and small venues
• Home studio reference monitors where natural tonal balance matters
• Portable one-hand-carry cabinets for acoustic acts and vocal reinforcement

Both drivers share the same acoustic centre, delivering true point-source output with coherent phase alignment across the entire listening area. The wide 80-degree dispersion means more seats covered per cabinet, fewer speakers needed per install, and less time spent worrying about off-axis coverage holes.

Specifications – LF Section

• Nominal Diameter: 320 mm (12 in)
• Voice Coil Diameter: 76 mm (3 in)
• Continuous Power Handling: 700 W
• Nominal Power Handling: 350 W
• Nominal Impedance: 8 Ω
• Minimum Impedance: 6.5 Ω
• Frequency Range: 45 Hz – 18,000 Hz
• Sensitivity: 99 dB
• Winding Material: Copper
• Former Material: Glass Fibre
• Winding Depth: 16.2 mm (0.64 in)
• Magnetic Gap Depth: 8 mm (0.31 in)
• Flux Density: 1.15 T
• Cone Treatment: WP Waterproof Front Side

Specifications – HF Section

• Voice Coil Diameter: 75 mm (3 in)
• Continuous Power Handling: 160 W
• Nominal Power Handling: 80 W
• Nominal Impedance: 8 Ω
• Minimum Impedance: 8 Ω
• Recommended Crossover: 1.2 kHz
• Sensitivity: 105 dB
• Winding Material: Aluminium
• Inductance: 0.14 mH
• Flux Density: 1.9 T
• Diaphragm Material: Polyester/Titanium
• Magnet Material: Neodymium Ring

Conclusion

The B&C 12CXN76 is the lightest 12-inch coaxial in B&C’s range and one of the most efficient. At 5.1 kg with 4.1% reference efficiency and a 47 g moving mass, it delivers fast, responsive, wide-coverage performance that belies its featherweight build.

The polyester/titanium HF diaphragm gives you smooth, natural highs without harshness, the copper voice coil handles sustained power with minimal compression, and the aluminium demodulating ring keeps your midrange clean and detailed. Whether you’re building an ultra-portable PA top, a wide-coverage install speaker, or a compact coaxial monitor for home or stage, the B&C 12CXN76 gives you proven neodymium coaxial performance at the lowest weight in the lineup.

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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.