B&C 5CXN44 – Improve Your Miniature Build with a 5″ Neodymium Coaxial

A 5-inch coaxial with 300 W continuous power handling, 80-degree coverage, and response down to 70 Hz shouldn’t exist — but the B&C 5CXN44 makes it happen. This tiny neodymium coaxial weighs just 1.15 kg, measures only 96 mm deep and 155 mm across, and delivers genuine two-way point-source performance from a frame that’s barely larger than a coffee mug.

The B&C 5CXN44 pairs a copper-wound woofer with a 36 mm HT Polymer compression driver, both powered by a single neodymium ring magnet. It’s the kind of driver that makes you rethink what’s possible from a 5-inch format — not a toy, not a compromise, but a properly engineered professional transducer scaled down to fit where nothing else can.

For builders designing micro satellite speakers, ultra-compact column arrays, tiny ceiling speakers, dashboard-style monitors, or any project where the enclosure needs to be almost impossibly small, the B&C 5CXN44 gives you real coaxial quality from a 5-inch driver that weighs barely more than a smartphone.

Design and Construction of the B&C 5CXN44

The low-frequency section of the B&C 5CXN44 uses a 44 mm (1.7-inch) copper voice coil on a Kapton former. That’s a large coil relative to the 5-inch cone — a coil-to-cone ratio that gives this driver more thermal headroom than you’d expect from something this small. Copper winding adds better thermal conductivity than aluminium for less power compression under sustained use.

The 15 g moving mass is extraordinarily light, delivering the kind of transient speed that makes everything sound immediate and alive. Speech consonants are razor-sharp, plucked strings have instant attack, and percussive details come through with startling clarity. At this mass, the cone reacts to signal changes almost instantaneously.

The 6 mm linear excursion is impressive for a 5-inch driver — more travel than several of B&C’s larger coaxials offer. That excursion capability is what allows the B&C 5CXN44 to produce usable bass output down to 70 Hz despite the tiny cone area. You won’t get room-shaking low end, but you will get musical, defined bass that’s genuinely satisfying for its size.

An aluminium demodulating ring in the motor structure keeps midrange distortion low. This is a meaningful inclusion at this driver size — most competing 5-inch coaxials skip this feature entirely. You’ll hear cleaner vocals and more detailed midrange than typical small-format drivers can deliver.

The waterproof-treated paper cone provides moisture protection for outdoor and humid-environment builds. The 8.1 Tm Bl factor gives the motor solid control over the featherweight cone, keeping the bass tight and defined rather than loose or boomy.

The high-frequency section features a 36 mm (1.4-inch) aluminium voice coil driving an HT Polymer dome diaphragm at 101 dB sensitivity with 1.54 T flux density. HT Polymer produces smooth, well-damped highs that are free from harshness — a comfortable, natural top end that works beautifully for extended listening at close range. The recommended crossover at 2 kHz lets the woofer handle the full midrange before the HF driver takes over.

Performance and Applications for the B&C 5CXN44

The B&C 5CXN44 handles 300 W continuous on the LF section and 50 W on the HF. For a 5-inch coaxial, that’s exceptional headroom. You won’t be driving this at festival volumes, but for nearfield, architectural, and distributed sound applications, the power handling ensures clean output with plenty of reserve.

B&C provides specific enclosure recommendations: a 9-litre vented box tuned to 57 Hz. That’s a useful starting point for your design, and the 4.3-litre Vas confirms that genuinely small enclosures are perfectly viable. The Qts of 0.45 and EBP of 149 Hz support vented loading, which will give you the best low-end extension from the tiny cone area.

The 80-degree dispersion angle is wide enough to fill a room naturally from a single small source. At this driver size, that coverage pattern means you can use fewer speakers per zone in distributed systems while still maintaining even, consistent sound across the listening area.

Builders commonly choose the B&C 5CXN44 for:

• Micro satellite speakers in multi-channel and surround systems
• Ultra-compact column array and line source elements
• Tiny ceiling and wall-mount speakers for architectural sound
• Desktop nearfield monitors and personal reference speakers
• Portable and battery-powered speaker builds
• Paging, speech reinforcement, and information systems

Both drivers share the same acoustic centre for true point-source output with coherent phase alignment. In a 5-inch format, the coaxial design isn’t just an advantage — it’s the only practical way to achieve genuine two-way performance. There’s no room for a separate tweeter in an enclosure this small, which makes the B&C 5CXN44’s integrated coaxial architecture essential rather than optional.

Specifications – LF Section

• Nominal Diameter: 127 mm (5 in)
• Voice Coil Diameter: 44 mm (1.7 in)
• Continuous Power Handling: 300 W
• Nominal Power Handling: 150 W
• Nominal Impedance: 8 Ω
• Minimum Impedance: 6.1 Ω
• Frequency Range: 70 Hz – 18,000 Hz
• Sensitivity: 86.5 dB
• Winding Material: Copper
• Former Material: Kapton
• Winding Depth: 14 mm (0.55 in)
• Magnetic Gap Depth: 6 mm (0.24 in)
• Flux Density: 0.95 T
• Cone Treatment: WP Waterproof Front Side

Specifications – HF Section

• Voice Coil Diameter: 36 mm (1.4 in)
• Continuous Power Handling: 50 W
• Nominal Power Handling: 25 W
• Nominal Impedance: 8 Ω
• Minimum Impedance: 7.5 Ω
• Recommended Crossover: 2 kHz
• Sensitivity: 101 dB
• Winding Material: Aluminium
• Inductance: 0.14 mH
• Flux Density: 1.54 T
• Diaphragm Material: HT Polymer
• Magnet Material: Neodymium Ring

Conclusion

The B&C 5CXN44 redefines what a 5-inch driver can do. At 1.15 kg and 96 mm deep, it’s one of the tiniest professional coaxials ever made — yet it handles 300 W continuous, reaches down to 70 Hz, and includes an aluminium demodulating ring for clean midrange that most drivers twice its size don’t offer.

With a 15 g moving mass for blistering transient speed, 6 mm linear excursion for surprising bass output, smooth HT Polymer highs at 101 dB, and B&C’s own 9-litre vented enclosure recommendation to get you started, the B&C 5CXN44 is the ultimate building block for micro speakers, column arrays, and installed systems where the driver needs to deliver serious sound from an almost impossibly small package.