B&C 6NDL38 6.5″ Professional Woofer LF Driver
The B&C 6NDL38 is a high-performance 6.5-inch professional woofer designed for compact loudspeaker systems requiring excellent power handling, low distortion, and lightweight construction. Featuring a powerful neodymium motor assembly and advanced magnetic circuit design, the B&C 6NDL38 delivers exceptional performance in applications where size, weight, and output capability are equally important. The combination of high excursion capability, strong thermal management, and extended frequency response makes this driver an ideal choice for modern professional audio systems.
Engineered for compact two-way loudspeakers, stage monitors, portable PA systems, and installed sound reinforcement applications, the B&C 6NDL38 provides a balance of efficiency, reliability, and acoustic accuracy. Its neodymium motor significantly reduces overall driver weight while maintaining the magnetic strength required for demanding professional applications.
Key Features
- 150 W nominal power handling
- 300 W continuous program power capacity
- 38 mm (1.5 inch) copper voice coil
- 92 dB sensitivity
- 70 Hz – 6000 Hz frequency response
- Lightweight neodymium ring magnet assembly
- Aluminium demodulating ring for reduced distortion
- WP waterproof front cone treatment
- High excursion design with 6 mm Xmax
- Optimized for compact vented enclosure systems
- Excellent power-to-weight ratio for portable applications
- Advanced thermal and magnetic performance design
Lightweight Neodymium Motor Technology
One of the defining features of the B&C 6NDL38 is its advanced neodymium ring magnet motor structure. Compared to conventional ferrite designs, the neodymium motor dramatically reduces overall weight while maintaining the magnetic strength required for professional loudspeaker applications. This makes the driver particularly attractive for portable sound reinforcement systems where reducing cabinet weight is a major advantage.
The motor assembly incorporates an aluminium demodulating ring, which helps stabilize inductance and reduce distortion throughout the operating range. By minimizing inductance modulation, the driver maintains greater accuracy and improved detail reproduction, especially at higher output levels where distortion can become more noticeable.
With a measured 1.15 T flux density, the magnetic structure delivers excellent cone control and efficient energy transfer while preserving low distortion characteristics.
Voice Coil Construction and Thermal Reliability
The B&C 6NDL38 utilizes a 38 mm copper voice coil wound on a Kapton former. This combination provides an excellent balance between thermal stability, reliability, and long-term performance under demanding operating conditions. Copper windings provide efficient electrical conductivity while the Kapton former maintains structural integrity at elevated temperatures.
The driver is rated at 150 W nominal power handling and 300 W continuous program power, providing sufficient output capability for professional sound reinforcement applications. The optimized motor and voice coil assembly help maintain stable performance while minimizing thermal compression during extended operation.
Cone and Suspension Design
The B&C 6NDL38 features an exponential cone profile combined with a roll surround suspension. This design provides controlled cone movement while maintaining the excursion capability required for compact low-frequency applications. The result is smooth frequency response, excellent transient performance, and reliable operation throughout the driver’s intended bandwidth.
A single spider suspension system ensures accurate voice coil alignment while supporting long-term mechanical stability. The cone also incorporates WP waterproof front-side treatment, helping protect the driver from humidity and environmental conditions commonly encountered in professional sound reinforcement environments.
Compact System Integration
The B&C 6NDL38 has been specifically optimized for compact enclosure designs. B&C recommends a 9 dm³ enclosure volume tuned to 62 Hz, allowing system designers to achieve useful low-frequency extension while maintaining compact cabinet dimensions. This makes the driver particularly effective in portable loudspeakers, stage monitors, and compact two-way systems.
Typical applications include:
- Compact two-way loudspeaker systems
- Professional stage monitors
- Portable PA systems
- Compact bass reflex enclosures
- Installed sound reinforcement systems
- Lightweight professional loudspeakers
Technical Specifications
Nominal Diameter: 170 mm (6.5 in)
Nominal Impedance: 8 Ω
Minimum Impedance: 6.0 Ω
Nominal Power Handling: 150 W
Continuous Program Power: 300 W
Sensitivity: 92 dB
Frequency Range: 70 Hz – 6000 Hz
Voice Coil Diameter: 38 mm (1.5 in)
Winding Material: Copper
Former Material: Kapton
Winding Depth: 12 mm
Magnetic Gap Depth: 6 mm
Flux Density: 1.15 T
Magnet Material: Neodymium Ring
Cone Shape: Exponential
Surround Shape: Roll
Spider Design: Single
Pole Design: T-Pole
Cone Treatment: WP Waterproof Front Side
Recommended Enclosure: 9 dm³
Recommended Tuning: 62 Hz
Thiele-Small Parameters
Fs: 72 Hz
Re: 5.2 Ω
Qes: 0.44
Qms: 11.5
Qts: 0.42
Vas: 7.0 dm³
Sd: 132 cm²
η₀: 0.6 %
Xmax: ±6.0 mm
Xvar: ±5.5 mm
Mms: 17 g
BL Factor: 9.5 Tm
Le: 0.6 mH
EBP: 163 Hz
Mounting Information
Overall Diameter: 187 mm
Bolt Circle Diameter: 172 mm
Baffle Cutout Diameter: 145 mm
Depth: 85 mm
Flange and Gasket Thickness: 11 mm
Air Volume Occupied by Driver: 0.63 dm³
Net Weight: 1.2 kg
Shipping Weight: 1.4 kg
Shipping Box: 210 × 210 × 125 mm
Recone Kit: RCK06NDL388
Applications
The B&C 6NDL38 is engineered for professional audio systems where compact size, low weight, and dependable performance are critical. Its neodymium motor assembly, advanced low-distortion design, and compact enclosure compatibility make it particularly suitable for portable PA systems, stage monitors, compact two-way loudspeakers, and installed sound reinforcement applications.
For system designers seeking a lightweight professional woofer capable of delivering strong output and reliable performance from compact enclosure designs, the B&C 6NDL38 provides an outstanding combination of efficiency, durability, and acoustic performance.
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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.
