B&C Speaker 8MBX51

16Ω

Woofer

Nominal diameter8″ / 200 mm
Resonance60 Hz
Q factor0.29
Sensitivity94.2 dB
Linear excursion± 6 mm
Program Power400 W
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 94.2dB
  • Frequency response 60 - 4000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 60Hz
  • Mechanical quality factor QMS 5.60
  • Electrical quality factor QES 0.31
  • Total quality factor QTS 0.29

Large signal parameters

  • Maximum linear excursion xmax 6mm
  • Air volume displaced at xmax VD 132cm³
  • Power handling P 200W
  • Program power Pmax 400W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 4.9Ω
  • Inductance (1kHz) LE 0.4mH
  • VC Diameter 51mm
  • Winding height HVC 15mm
  • Winding material Aluminium
  • Former material Glass Fibre

Magnet

  • Flux density B 1.3T
  • Force factor Bl 11.4N/A
  • Motor constant Bl/√RE 5.15N/√W
  • Air gap height HAG 7mm
  • Material Neodymium Ring

Diaphragm

  • Effective diameter 167mm
  • Effective area SD 220cm²
  • Moving mass MMS 20g
  • Moving mass (without air load) MMD 17.5g
  • Material Waterproof

Suspensions

  • Stiffness KMS 3.1N/mm
  • Compliance CMS 323µm/N
  • Equivalent volume to the compliance VAS 23L
  • Mechanical resistance RMS 1.35N·s/m

Dimensions

  • Nominal diameter 8
  • 200mm
  • Overall diameter 225mm
  • Baffle cutout diameter 187mm
  • Overall depth 93mm
  • Flange thickness 9mm
  • Mounting depth 84mm
  • Volume occupied by the driver 1.1L
  • Net weight 1.8kg
B&C Speaker 8MBX51 Impedance
B&C Speaker 8MBX51 SPL
B&C Speaker 8MBX51 Dimensions

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