B&C 6MD38 6.5″ Professional Midrange LF Driver
The B&C 6MD38 is a professional 6.5-inch midrange LF driver engineered for applications requiring high efficiency, lightweight moving mass, and strong vocal and mid-frequency reproduction. Developed specifically as a dedicated midrange transducer, the B&C 6MD38 combines a compact ferrite motor structure with a lightweight moving assembly to deliver controlled response characteristics across an extended operating bandwidth. The B&C 6MD38 is optimized for use in professional multi-way loudspeaker systems where midrange clarity, sensitivity, and controlled dispersion are essential.
Designed for compact line arrays, professional PA systems, stage monitoring systems, and multi-way loudspeaker applications, the B&C 6MD38 provides strong mid-frequency output while maintaining compact dimensions for easy system integration. Its carefully optimized suspension geometry and low moving mass contribute to fast transient response and predictable acoustic behavior.
Key Features
- 120 W nominal power handling
- 240 W continuous program power capacity
- 38 mm (1.5 inch) aluminium voice coil
- 96 dB sensitivity
- 130 Hz – 6000 Hz frequency response
- Ferrite magnet motor assembly
- Lightweight moving assembly for improved transient response
- Triple roll surround geometry
- Optimized for dedicated midrange applications
- Compact mounting dimensions for multi-way system integration
Dedicated Midrange Design
The B&C 6MD38 has been engineered specifically for dedicated midrange applications rather than low-frequency reproduction. Its design focuses on maximizing sensitivity, transient response, and vocal clarity across the mid-frequency region where accuracy and articulation become critical. The driver operates across a broad 130 Hz to 6000 Hz frequency range, allowing integration into professional multi-way loudspeaker systems with flexible crossover implementation.
The motor structure utilizes a ferrite magnetic assembly generating approximately 1.4 T flux density, providing strong control over cone movement while maintaining efficient acoustic output. Combined with the lightweight moving assembly, the magnetic system contributes to controlled transient behavior and reduced stored energy characteristics.
Its relatively low moving mass and optimized suspension geometry allow the B&C 6MD38 to reproduce critical midrange frequencies with improved speed and detail, making it particularly suitable for vocal reproduction and instrument reinforcement applications.
Voice Coil Construction and Thermal Stability
At the center of the B&C 6MD38 is a 38 mm aluminium voice coil wound on a glass fibre former. The aluminium winding material contributes to reduced moving mass while maintaining sufficient thermal performance for professional sound reinforcement applications. This balance between thermal handling and moving mass reduction supports improved efficiency and transient response.
The driver supports 120 W nominal power handling and 240 W continuous program power capacity, providing sufficient output capability for professional midrange applications while maintaining long-term reliability under demanding operating conditions. The optimized voice coil geometry contributes to stable thermal behavior and controlled performance during continuous operation.
The lightweight moving assembly further enhances upper-frequency behavior and contributes to fast acceleration characteristics throughout the driver’s intended operating range.
Cone Geometry and Suspension Design
The B&C 6MD38 utilizes an exponential cone profile combined with a triple roll surround geometry, supporting controlled cone movement while preserving the efficiency characteristics required for dedicated midrange applications. The suspension geometry has been optimized for low excursion operation and accurate mid-band reproduction.
A single spider suspension system maintains mechanical stability while allowing controlled movement characteristics across the intended bandwidth. The driver does not utilize cone treatment, helping preserve low moving mass and supporting more responsive transient behavior.
This combination of suspension geometry and lightweight construction contributes to the driver’s ability to maintain clarity and articulation across demanding professional applications.
System Integration
The B&C 6MD38 has been optimized for professional multi-way loudspeaker integration.
Its compact dimensions, extended midrange bandwidth, and efficient motor structure make it suitable for applications requiring dedicated mid-frequency reproduction without increasing enclosure size significantly. The driver’s high EBP value of 265 Hz further reflects its suitability for efficient midrange loading applications.
Typical applications include:
- Professional multi-way loudspeaker systems
- Compact line arrays
- Stage monitor systems
- Vocal reinforcement systems
- Midrange sections in PA cabinets
- Installed sound reinforcement systems
Technical Specifications
Nominal Diameter: 170 mm (6.5 in)
Nominal Impedance: 8 Ω
Minimum Impedance: 6.5 Ω
Nominal Power Handling: 120 W
Continuous Program Power: 240 W
Sensitivity: 96 dB
Frequency Range: 130 Hz – 6000 Hz
Voice Coil Diameter: 38 mm (1.5 in)
Winding Material: Aluminium
Former Material: Glass Fibre
Winding Depth: 9 mm
Magnetic Gap Depth: 6 mm
Flux Density: 1.4 T
Magnet Material: Ferrite
Cone Shape: Exponential
Surround Shape: Triple Roll
Spider Design: Single
Pole Design: T-Pole
Cone Treatment: None
Thiele-Small Parameters
Fs: 130 Hz
Re: 5.7 Ω
Qes: 0.49
Qms: 3.7
Qts: 0.44
Vas: 3 dm³
Sd: 132 cm²
η₀: 1.4 %
Xmax: 2 mm
Xvar: 4.5 mm
Mms: 12 g
BL Factor: 10.5 Tm
Le: 0.25 mH
EBP: 265 Hz
Mounting Information
Overall Diameter: 187 mm
Bolt Circle Diameter: 172 mm
Baffle Cutout Diameter: 145 mm
Depth: 82 mm
Flange and Gasket Thickness: 9 mm
Air Volume Occupied by Driver: 0.8 dm³
Net Weight: 2.3 kg
Shipping Weight: 2.5 kg
Shipping Box: 210 × 210 × 125 mm
Recone Kit: RCK06MD388
Applications
The B&C 6MD38 is engineered for dedicated professional midrange applications where efficiency, vocal clarity, and compact integration are priorities. Its lightweight moving assembly, optimized suspension geometry, and broad mid-frequency bandwidth make it particularly suitable for multi-way loudspeaker systems, stage monitoring applications, compact line arrays, and professional sound reinforcement systems.
For system designers requiring a dedicated midrange transducer optimized for professional vocal and instrument reproduction, the B&C 6MD38 provides an effective balance of sensitivity, transient accuracy, and installation flexibility.
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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.
