B&C DE602 – High-Power 1.4-Inch Titanium Compression Driver with 65 mm Voice Coil and Copper Cap
The B&C DE602 is the highest-power 1.4-inch exit compression driver in B&C’s range. With a 65 mm aluminium voice coil — the largest fitted to any B&C 1.4-inch driver — a titanium diaphragm, shorting copper cap, 108 dB sensitivity, and 80 W AES / 160 W program power handling, the B&C DE602 delivers the combination of sustained output, titanium detail, and thermal headroom that large-format professional speaker systems demand from their HF section.
The 65 mm coil is the specification that positions the B&C DE602 above the DE254TN and DE52 in B&C’s 1.4-inch range. The step from 44 mm (DE254TN) or 51 mm (DE52) to 65 mm provides substantially more coil surface area for heat dissipation — which is why the B&C DE602 handles 80 W AES compared to 60 W from the DE254TN and 70 W from the DE52. For systems running sustained high power through the compression driver, that thermal capacity difference is the margin between consistent output and gradual compression over the course of an event.
The shorting copper cap adds the extended high-frequency performance that uncapped drivers can’t deliver. Combined with the titanium diaphragm’s stiff dome behaviour, the cap keeps the response smooth and usable through the 18 kHz upper limit while maintaining flat impedance behaviour across the entire operating range. The result is a 1.4-inch titanium driver with both the power handling of a large-coil platform and the high-frequency refinement of a copper-capped magnetic circuit.
At 3.4 kg, 145 mm overall diameter, and 65 mm depth, the B&C DE602 is the largest 1.4-inch exit driver in B&C’s range. The bigger coil requires a bigger motor, a bigger body, and more mass — the price for the thermal headroom and output capability that the 65 mm platform provides. Available in 8 Ω with a user-replaceable titanium diaphragm (part number MMD6108).
Design and Construction of the B&C DE602
The B&C DE602 uses a 65 mm (2.5-inch) aluminium voice coil driving a titanium diaphragm through a 1.4-inch (36 mm) exit throat. The 65 mm coil sits between B&C’s 51 mm platform (DE52/DE550) and the 75 mm platform (DE910/DE910TN) — a size class that provides more thermal capacity than the 51 mm while keeping the driver more compact than the 75 mm format.
The coil surface area scales with diameter, and the jump from the DE254TN’s 44 mm to the B&C DE602’s 65 mm represents roughly 118% more surface area for heat dissipation. That additional thermal mass is the engineering behind the 80 W AES power rating — the same figure as the DE910, achieved from a driver that’s smaller, lighter, and uses a 1.4-inch exit instead of the DE910’s 1.3-inch.
The magnetic circuit produces 1.55 T of flux density. While numerically lower than the DE254TN’s 1.85 T, the relationship between flux density and motor force is not straightforward in compression drivers with different coil diameters. The B&C DE602’s 65 mm coil has more conductor in the magnetic gap than the DE254TN’s 44 mm — more wire turns, more force-generating length — which is how the B&C DE602 achieves 108 dB sensitivity from 1.55 T while the DE254TN achieves 106.5 dB from 1.85 T. The larger coil extracts more total force from lower flux density.
The titanium diaphragm provides the bright, detailed, forward treble character that professional live sound systems rely on. Titanium’s superior stiffness-to-weight ratio maintains pistonic dome behaviour at higher frequencies than polymer alternatives, producing sharper transient definition and more energy in the presence and brilliance bands where vocal clarity and percussive attack live.
The shorting copper cap on the pole piece is the feature that refines the B&C DE602’s high-frequency performance beyond what the titanium diaphragm alone delivers. The cap reduces voice coil inductance rise at higher frequencies, keeping the impedance curve flatter and allowing the response to extend smoothly to 18 kHz rather than rolling off and becoming unpredictable.
The 0.15 mH inductance with the copper cap is low for a 65 mm coil driver. Without the cap, a coil this size would produce significantly higher inductance — degrading high-frequency output and making crossover design more difficult. The cap keeps the B&C DE602’s electrical behaviour clean and predictable across the full 1 kHz – 18 kHz operating range.
At 3.4 kg, 145 mm overall diameter, and 65 mm depth, the B&C DE602 is the largest and heaviest 1.4-inch exit driver in B&C’s range. The 65 mm coil and its associated motor assembly account for the added size and mass. Four M6 mounting holes on a 102 mm (4-inch) bolt circle at 90° intervals match the standard bolt pattern used on the DE254TN and DE910 series, providing compatibility with standard professional 1.4-inch horn flanges.
Performance and Applications for the B&C DE602
The B&C DE602 delivers 108 dB sensitivity across a 1 kHz – 18 kHz bandwidth with a recommended crossover frequency of 1.2 kHz. The 108 dB matches the DE52 as the highest sensitivity of any 1.4-inch driver in B&C’s range, and the 1.2 kHz crossover matches the DE910 as the second-lowest recommended crossover point in B&C’s HF range (after the DE52’s 1 kHz).
The 108 dB sensitivity from a 65 mm coil platform is a significant engineering achievement. Larger coils typically sacrifice sensitivity because the heavier moving assembly is harder to accelerate. The B&C DE602 maintains 108 dB despite the larger coil by generating more total motor force from the 65 mm conductor length — confirming that the 1.55 T flux density, while lower than smaller-coil drivers, produces more than enough force when applied across the larger coil circumference.
The 80 W AES / 160 W program power handling is the highest of any 1.4-inch exit compression driver in B&C’s range. For context, the DE254TN handles 60 W AES and the DE52 handles 70 W. The B&C DE602 exceeds both by meaningful margins, providing the sustained thermal headroom that touring systems, festival rigs, and high-output installed sound applications require from their HF section.
The 1.2 kHz crossover point is 300 Hz lower than the DE254TN’s 1.5 kHz, enabling the horn to take over directivity control earlier in the mid-range. Earlier crossover means the woofer operates in a narrower bandwidth where its directivity is more uniform, and the horn controls the coverage pattern from a lower frequency. The directivity transition is smoother, the power response is more consistent, and the off-axis performance improves measurably.
Combined with the 108 dB sensitivity, the 1.2 kHz crossover means the B&C DE602 produces authoritative output in the 1–2 kHz presence band — the frequency range where vocal intelligibility and mid-range definition are most critical. The titanium diaphragm’s forward character adds presence and projection in this range, while the shorting copper cap ensures the upper treble remains smooth and extended.
The titanium diaphragm positions the B&C DE602 for applications where the HF section needs to project through distance, ambient noise, and competing sound sources. In live sound, festival, and arena environments, titanium’s bright, forward character cuts through where smoother polymer diaphragms lose definition. The B&C DE602’s 65 mm coil ensures it does so at sustained power levels that exceed anything else in B&C’s 1.4-inch range.
For systems with DSP, the titanium resonant peak can be shaped to taste. For systems running without processing, the shorting copper cap partially tames the upper treble behaviour, producing a more controlled rolloff than uncapped titanium drivers exhibit. The B&C DE602 is more forgiving without EQ than most titanium drivers of comparable size.
Ideal applications for the B&C DE602 include:
- Large-format two-way and three-way touring speaker systems with 1.4-inch horns
- Festival rigs and arena installations requiring maximum sustained HF output
- High-output installed sound in venues, clubs, and performance spaces
- Line array HF sections needing 1.4-inch exit with the highest power handling available
- Two-way systems crossing over at 1.2 kHz for improved directivity control
- Three-way systems where the compression driver covers 1.2 kHz to 18 kHz
- Applications where titanium projection is required at sustained high power levels
- Systems where the shorting copper cap’s extended HF response adds refinement
Specifications – B&C DE602
- Throat Diameter: 36 mm (1.4 in)
- Nominal Impedance: 8 Ω
- Minimum Impedance: 7.6 Ω
- Nominal Power Handling: 80 W
- Continuous Power Handling: 160 W
- Sensitivity: 108 dB
- Frequency Range: 1 kHz – 18 kHz
- Recommended Crossover: 1.2 kHz
- Voice Coil Diameter: 65 mm (2.5 in)
- Winding Material: Aluminium
- Inductance: 0.15 mH
- Flux Density: 1.55 T
- Magnet Material: Neodymium
- Diaphragm Material: Titanium
- Replacement Diaphragm: MMD6108
- Net Weight: 3.4 kg (7.5 lb)
Mounting Information – B&C DE602
- Overall Diameter: 145 mm (5.7 in)
- Depth: 65 mm (2.5 in)
- Bolt Pattern: Four M6 holes on 102 mm (4 in) bolt circle, 90° apart
Conclusion – B&C DE602 Compression Driver
The B&C DE602 is the highest-power 1.4-inch exit compression driver in B&C’s range. The 65 mm voice coil is the largest fitted to any B&C 1.4-inch driver, providing the thermal capacity for 80 W AES sustained operation that the 44 mm and 51 mm coil alternatives can’t match. The 108 dB sensitivity leads the range alongside the DE52, and the 1.2 kHz recommended crossover enables early handoff from woofer to horn for optimised directivity control.
The titanium diaphragm with shorting copper cap gives the B&C DE602 the best of both worlds — titanium’s bright, projecting treble character with the copper cap’s smooth, extended upper response. The combination produces a 1.4-inch titanium driver that sounds more refined than uncapped titanium while retaining the forward presence and projection that live sound demands.
The 3.4 kg weight and 145 mm body are the largest in B&C’s 1.4-inch range — the cost of the 65 mm coil and the motor assembly behind it. For builders where maximum 1.4-inch power handling is the priority and the horn and cabinet can accommodate the larger body, the B&C DE602 provides thermal headroom that no other driver in its exit class can match.
For touring systems, festival rigs, arena installations, and any application where a 1.4-inch compression driver needs to deliver the most sustained power with titanium detail and copper-capped refinement, the B&C DE602 is the 1.4-inch that handles the heaviest workload in B&C’s range. Sixty-five millimetres of coil, 80 watts of power, 108 dB of sensitivity, and titanium projection that reaches every seat in the house.
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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.
