Continuous Power Handling
Voice Coil Diameter
Magnet Material
The MBX series mid-bass woofers from B&C Speakers offer acoustic designers a new range of high efficiency, wide bandwidth alternatives that are not currently available in the B&C range. These full-featured transducers incorporate lightweight neodymium motors, inside/outside wound copper clad aluminum wire voice coils, weatherproof impregnated paper cones, and a symmetrical inductance profile. The MBX Series is especially well suited for two-way loudspeaker enclosures.



  • Nominal Diameter170 mm (6.5 in)
  • Nominal Impedance16 Ω
  • Minimum Impedance11.9 Ω
  • Nominal Power Handling1200 W
  • Continuous Power Handling2400 W
  • Sensitivity398.0 dB
  • Frequency Range115 - 5000 Hz
  • Voice Coil Diameter44 mm (1.7 in)
  • Winding MaterialAluminium
  • Former MaterialGlass Fibre
  • Winding Depth10 mm (0.37 in)
  • Magnetic Gap Depth6 mm (0.25 in)
  • Flux Density1.55 T


  • Surround ShapeTriple Roll
  • Cone ShapeExponential
  • Magnet MaterialNeodymium Ring
  • SpiderSingle
  • Pole DesignT-Pole
  • Woofer Cone TreatmentWaterproof Impregnated Cone
  • Recommended Enclosure3.0 dm3 (0.11 ft3)
  • Recommended Tuning120 Hz


  • Resonance Frequency115 Hz
  • Re10.4 Ω
  • Qes0.41
  • Qms2.9
  • Qts0.35
  • Vas4.0 dm3 (0.14 ft3)
  • Sd132.0 cm2 (20.46 in2)
  • η₀1.4 %
  • Xmax3.5 mm
  • Xvar3.0 mm
  • Mms12 g
  • Bl14.7 Txm
  • Le0.34 mH
  • EBP280 Hz

Mounting And Shipping Info

  • Overall Diameter187 mm (7.36 in)
  • Bolt Circle Diameter172 mm (6.7 in)
  • Baffle Cutout Diameter145.0 mm (5.7 in)
  • Depth87 mm (3.43 in)
  • Flange and Gasket Thickness11 mm (0.4 in)
  • Air Volume Occupied by Driver0.6 dm3 (0.02 ft3)
  • Net Weight1.5 kg (3.31 lb)
  • Shipping Units1
  • Shipping Weight1.75 kg (3.86 lb)
  • Shipping Box221x214x130 mm (8.7x8.4x5.1 in)

Service Kit

  • RCK06MBX4416
  • 2 hours test made with continuous pink noise signal (6 dB crest factor) within the range Fs-10Fs. Power calculated on rated minimum impedance. Loudspeaker in free air.
  • Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
  • Applied RMS Voltage is set to 4V for 16 ohm Nominal Impedance
  • Thiele-Small parameters are measured after a high level 20 Hz sine wave preconditioning test.