B&C DE620TN – Powerful 1.4″ Neodymium Titanium Compression Driver for Your Two-Way Build

If you’re building a two-way cabinet and need a compression driver that delivers crisp, projecting highs with serious sensitivity and power handling, the B&C DE620TN belongs on your shortlist. This 1.4-inch exit neodymium compression driver produces 107 dB sensitivity from a titanium diaphragm driven by a 65 mm aluminium voice coil — giving your build the kind of high-frequency output and clarity that separates professional results from amateur ones.

The B&C DE620TN handles 160 W continuous with a frequency response from 1 kHz to 18 kHz and a recommended crossover at 1.2 kHz. It’s designed to mate with standard 1.4-inch throat horns and waveguides, making it one of the most versatile HF drivers you can pair with a 10, 12, or 15-inch woofer for a high-output two-way system.

At just 1.75 kg with a compact 115 mm diameter and 52 mm depth, the B&C DE620TN adds minimal weight and bulk to your cabinet. For builders who want a proven, professional-grade compression driver that delivers clean titanium highs from a lightweight neodymium motor, this is the driver to build around.

Design and Construction of the B&C DE620TN

The B&C DE620TN is built around a 65 mm (2.5-inch) aluminium voice coil driving a pure titanium diaphragm. Titanium gives you the stiffness and low mass needed for extended high-frequency response with excellent transient attack. You’ll hear the snap of cymbals, the presence of vocals, and the detail in acoustic instruments with a clarity that softer diaphragm materials simply can’t match at high SPL.

The aluminium voice coil keeps the moving assembly light for fast transient response while providing adequate thermal handling for the driver’s 160 W continuous rating. The combination of aluminium winding and titanium diaphragm is a proven pairing in professional audio — fast, efficient, and capable of sustained high-output performance.

The neodymium magnet assembly includes a shorting copper cap — a detail that makes a real difference to the sound quality of your build. The copper cap reduces voice coil inductance modulation, which lowers distortion and extends the usable high-frequency bandwidth. You’ll hear this as smoother, more linear output across the driver’s entire range.

The 1.8 T flux density at the magnetic gap is strong, which is what drives the impressive 107 dB sensitivity. For your build, that means the compression driver produces substantial SPL from modest power — you don’t need a huge amplifier to get this driver working at its best.

The 36 mm (1.4-inch) throat diameter is the industry standard for mid-sized compression drivers, giving you a wide range of compatible horns and waveguides to choose from. Mounting is straightforward with four M6 holes on a 102 mm bolt circle — a standard pattern that fits most 1.4-inch horn flanges without modification.

Performance and Applications for the B&C DE620TN

The B&C DE620TN handles 160 W continuous program power, giving you reliable headroom for demanding professional use. The 107 dB sensitivity means you’ll get serious output from every watt — pair it with a woofer of similar sensitivity and your two-way system will have a balanced, effortless presentation that doesn’t require massive amplification.

The recommended crossover at 1.2 kHz allows the compression driver to handle a wide bandwidth, which is ideal for two-way designs where the woofer hands off somewhere in the low-to-mid midrange. This crossover point works well with 10, 12, and 15-inch woofers, giving you flexibility in your system design.

The frequency response extends from 1 kHz to 18 kHz, covering the full vocal presence band through to the top of the audible spectrum. The titanium diaphragm maintains its output and linearity through the upper octaves where polymer and polyester diaphragms can begin to roll off.

Builders commonly choose the B&C DE620TN for:

• Two-way PA tops and full-range cabinets with 10–15″ woofers
• Stage monitors requiring crisp vocal projection
• Horn-loaded high-frequency sections in multi-way systems
• Replacement or upgrade HF drivers in existing cabinets with 1.4″ throats
• DIY speaker builds where titanium clarity and neodymium efficiency are priorities

The compact dimensions and light weight make the B&C DE620TN easy to integrate into virtually any cabinet design. At 52 mm deep and 1.75 kg, it won’t add significant depth or weight to your enclosure — a meaningful advantage for portable builds and horn-loaded cabinets where space behind the horn is limited.

Specifications

• Throat Diameter: 36 mm (1.4 in)
• Voice Coil Diameter: 65 mm (2.5 in)
• Continuous Power Handling: 160 W
• Nominal Power Handling: 80 W
• Nominal Impedance: 8 Ω
• Minimum Impedance: 7.9 Ω
• Frequency Range: 1 kHz – 18 kHz
• Recommended Crossover: 1.2 kHz
• Sensitivity: 107 dB
• Winding Material: Aluminium
• Inductance: 0.15 mH
• Flux Density: 1.8 T
• Diaphragm Material: Titanium
• Magnet Material: Neodymium with Shorting Copper Cap

Mounting Information

• Bolt Pattern: Four M6 holes, 90° on 102 mm (4 in) diameter
• Overall Diameter: 115 mm (4.5 in)
• Depth: 52 mm (2 in)
• Net Weight: 1.75 kg (3.85 lb)
• Replacement Diaphragm: MMD620TN8M

Conclusion

The B&C DE620TN is a proven, professional-grade 1.4-inch compression driver that gives your two-way build the high-frequency performance it deserves. The titanium diaphragm delivers the crisp, detailed highs that define a well-built cabinet, while the neodymium motor with shorting copper cap keeps distortion low and efficiency high.

At 107 dB sensitivity, 160 W continuous handling, and just 1.75 kg, the B&C DE620TN pairs effortlessly with a wide range of woofers and horns. Whether you’re building a new PA top from scratch, upgrading the HF driver in an existing cabinet, or designing a horn-loaded monitor, this driver gives you the titanium clarity, neodymium efficiency, and professional reliability that every serious build needs in the high-frequency section.

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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.