B&C 5MDN38 5″ Professional Midrange LF Driver
The B&C 5MDN38 is a premium 5-inch professional midrange LF driver engineered for applications where exceptional vocal clarity, extended frequency response, and lightweight construction are essential. Designed as a dedicated midrange transducer, the B&C 5MDN38 combines an advanced neodymium motor assembly with a lightweight aluminium voice coil and optimized moving system to deliver remarkable efficiency, low distortion, and accurate acoustic reproduction across a wide operating bandwidth.
Developed for professional line arrays, multi-way loudspeaker systems, stage monitors, and high-performance sound reinforcement applications, the B&C 5MDN38 offers the speed, articulation, and reliability required for demanding professional environments. Its ability to reproduce frequencies from 175 Hz to 10,000 Hz makes it one of the most versatile dedicated midrange drivers in its class, capable of delivering exceptional vocal intelligibility and instrument detail while maintaining the high output levels expected from professional audio systems.
With an impressive 97 dB sensitivity, lightweight neodymium motor structure, and low moving mass of just 8 grams, the B&C 5MDN38 is optimized for applications where transient response and midrange accuracy are critical. Whether deployed in compact line array modules, high-performance stage monitoring systems, or dedicated midrange sections of touring loudspeakers, this driver delivers the precision and consistency required by modern professional audio designers.
The combination of advanced materials, optimized motor geometry, and professional-grade construction allows the B&C 5MDN38 to maintain excellent performance under demanding operating conditions while delivering the reliability that has made B&C one of the most respected names in professional loudspeaker engineering.
Key Features
- 90 W nominal power handling
- 180 W continuous power handling
- 38 mm (1.5 inch) aluminium voice coil
- 97 dB sensitivity
- 175 Hz – 10,000 Hz frequency response
- Lightweight neodymium ring magnet assembly
- Glass fibre voice coil former
- Low moving mass design
- Double roll surround geometry
- WP waterproof front cone treatment
- Extended bandwidth midrange performance
- Optimized for professional sound reinforcement systems
Advanced Neodymium Motor Technology
At the heart of the B&C 5MDN38 is a powerful neodymium ring magnet motor assembly engineered to maximize efficiency while minimizing overall weight. Neodymium technology provides significantly greater magnetic strength compared to conventional ferrite structures, allowing the driver to deliver exceptional performance while weighing less than one kilogram.
The motor assembly generates a substantial 1.25 Tesla flux density, providing excellent control over the moving assembly and contributing to the driver’s outstanding transient response and low distortion characteristics. This powerful magnetic structure ensures accurate cone movement across the driver’s operating bandwidth while preserving detail and articulation.
A strong Bl factor of 11.1 Tm further enhances motor control, helping the driver maintain exceptional efficiency and precise acoustic reproduction even during high-output operation. The result is a driver capable of delivering remarkable vocal intelligibility and instrument definition in demanding professional environments.
The lightweight motor design also makes the B&C 5MDN38 particularly attractive for line array systems and portable sound reinforcement applications where minimizing system weight is a major design consideration.
Lightweight Voice Coil Construction
The B&C 5MDN38 utilizes a 38 mm aluminium voice coil wound on a durable glass fibre former. This advanced combination of materials has been selected to provide the ideal balance of thermal performance, low moving mass, and long-term reliability.
Aluminium winding material significantly reduces the weight of the moving assembly, allowing the driver to respond rapidly to dynamic musical signals. This contributes directly to improved transient accuracy, faster attack characteristics, and more natural vocal reproduction.
The glass fibre former provides excellent resistance to thermal stress while maintaining structural stability under demanding operating conditions. Together, these components allow the driver to reliably handle 90 W nominal power and 180 W continuous power without compromising performance.
The voice coil assembly incorporates a 10 mm winding depth operating within a 6 mm magnetic gap, helping maintain excellent motor control and stable performance throughout its operating range.
Cone and Suspension Design
The B&C 5MDN38 features an exponential cone profile specifically optimized for dedicated midrange reproduction. This cone geometry promotes smooth frequency response characteristics and controlled acoustic behaviour throughout the driver’s operating bandwidth.
The suspension system utilizes a double roll surround, providing excellent cone control while maintaining the flexibility required for accurate midrange reproduction. This design helps preserve transient accuracy and contributes to the driver’s low distortion performance.
A single spider suspension system ensures proper voice coil alignment and supports reliable long-term operation. The suspension assembly has been carefully engineered to maintain consistent mechanical behaviour even during demanding professional use.
To enhance durability and environmental resistance, the cone incorporates WP Waterproof Front Side treatment. This protective coating helps safeguard the cone from moisture and humidity while ensuring consistent acoustic performance over time.
Extended Bandwidth Midrange Performance
One of the standout characteristics of the B&C 5MDN38 is its exceptionally wide operating bandwidth. With a frequency response extending from 175 Hz to 10,000 Hz, the driver is capable of reproducing a substantial portion of the audible spectrum with outstanding clarity and precision.
This extended bandwidth allows system designers greater flexibility when developing multi-way loudspeaker systems. The driver is capable of covering a broad midrange region while maintaining smooth response characteristics and excellent vocal articulation.
Its low 0.4 mH inductance contributes to improved high-frequency extension and cleaner upper-midrange reproduction, making the B&C 5MDN38 particularly effective in applications where vocal detail and instrument separation are priorities.
The driver’s low moving mass of 8 grams further enhances transient response, allowing it to reproduce complex musical passages with exceptional accuracy and detail.
Professional System Integration
The compact dimensions and lightweight construction of the B&C 5MDN38 make it highly adaptable to a wide range of professional loudspeaker designs.
Typical applications include:
- Professional line array systems
- Multi-way loudspeaker systems
- Stage monitoring systems
- Touring sound reinforcement systems
- Vocal reinforcement systems
- Compact point-source loudspeakers
- Installed sound systems
- High-output professional audio applications
Its combination of high sensitivity, wide bandwidth, and lightweight construction provides system designers with a versatile solution for demanding professional applications.
Technical Specifications
Nominal Diameter: 127 mm (5 in)
Nominal Impedance: 8 Ω
Minimum Impedance: 7 Ω
Nominal Power Handling: 90 W
Continuous Power Handling: 180 W
Sensitivity: 97 dB
Frequency Range: 175 Hz – 10,000 Hz
Voice Coil Diameter: 38 mm (1.5 in)
Winding Material: Aluminium
Former Material: Glass Fibre
Winding Depth: 10 mm (0.4 in)
Magnetic Gap Depth: 6 mm (0.24 in)
Flux Density: 1.25 T
Woofer Cone Treatment: WP Waterproof Front Side
Thiele-Small Parameters
Fs: 175 Hz
Re: 5.5 Ω
Qes: 0.36
Qms: 2.3
Qts: 0.31
Vas: 1.4 dm³ (0.05 ft³)
Sd: 95 cm² (14.7 in²)
η₀: 2 %
Xmax: 3.5 mm
Xvar: 4 mm
Mms: 8 g
Bl: 11.1 Tm
Le: 0.4 mH
EBP: 486 Hz
Design Features
Surround Shape: Double Roll
Cone Shape: Exponential
Magnet Material: Neodymium Ring
Spider: Single
Pole Design: Straight Pole
Woofer Cone Treatment: WP Waterproof Front Side
Mounting Information
Overall Diameter: 155 mm (6.1 in)
Bolt Circle Diameter: 142 mm (5.6 in)
Baffle Cutout Diameter: 122 mm (4.8 in)
Depth: 75 mm (2.95 in)
Flange and Gasket Thickness: 9 mm (0.35 in)
Air Volume Occupied by Driver: 0.35 dm³ (0.01 ft³)
Net Weight: 0.94 kg (2.07 lb)
Shipping Units: 1 Piece
Shipping Weight: 1.14 kg (2.51 lb)
Shipping Box: 210 × 210 × 125 mm
Recone Kit: RCK005MDN388
Applications
The B&C 5MDN38 is engineered for professional midrange applications where wide bandwidth, high sensitivity, and exceptional vocal reproduction are required. Its lightweight neodymium motor assembly, aluminium voice coil technology, and extended frequency response make it particularly well suited for line arrays, stage monitors, multi-way loudspeaker systems, and high-performance sound reinforcement installations.
With its combination of low distortion, fast transient response, and excellent efficiency, the B&C 5MDN38 provides system designers with a highly capable professional midrange solution. For applications where vocal intelligibility, instrument detail, and lightweight construction are priorities, the B&C 5MDN38 delivers the performance, reliability, and engineering excellence expected from a premium B&C transducer.
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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.
